A method for collision checking of a machining process is disclosed. A process-specific cycle is provided for the machining process. Multiple machining components are moved relative to one another with at least one machine axis on a machine tool. The machining components have at least one workpiece and one tool. The workpiece rotates about a workpiece axis and the tool rotates about a tool axis. At least one checking position is identified and corresponds to a relative position of the machining components set with the at least one machine axis. In order to check a respective checking position for collisions, a substitute machining component is used during the reproducing, which is a replica of the corresponding machining component.
The invention relates to a grinding wheel, in particular for machining teeth preferably for the production of a gear, said grinding wheel comprising a clamping unit (1, 21) and at least two partial grinding wheels (2, 3, 22, 23) which can be fastened next to one another on said clamping unit and extend coaxially to one another. The first partial grinding wheel (2, 22) is used preferably for quickly grinding a predefined profile of gear teeth to be machined, and the second partial grinding wheel (3, 23) is used for subsequently polishing the profile. Said first partial grinding wheel (2, 22) can be fastened independently of the second partial grinding wheel (3, 23) on the clamping unit (1, 21) between two stop surfaces (6, 10, 26, 30) of the clamping unit. Advantageously, the second partial grinding wheel (3, 23) has a larger inner diameter (D3) than that of the first partial grinding wheel (2, 23). This design results in a very solid hold of the grinding wheel in the machine tool.
B24D 5/14 - Zonally-graded wheelsComposite wheels comprising different abrasives
B24D 3/18 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings for porous or cellular structure
B24D 3/32 - Resins for porous or cellular structure
B23F 21/00 - Tools specially adapted for use in machines for manufacturing gear teeth
3.
METHOD OF MONITORING THE CONDITION OF A MACHINE TOOL
In a method of monitoring a condition of a machine tool (1) with a plurality of machine axes, a test cycle is carried out in which at least some of the machine axes are actuated and associated condition data are determined. Based on this, a condition diagnosis is carried out in which the condition data are compared with reference quantities. The reference quantities are determined from reference condition data obtained in a plurality of reference test cycles on a plurality of reference machines (2, 3, . . . , n).
B23Q 17/00 - Arrangements for indicating or measuring on machine tools
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
B23Q 17/12 - Arrangements for indicating or measuring on machine tools for indicating or measuring vibration
B23Q 17/20 - Arrangements for indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
B23Q 17/22 - Arrangements for indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
4.
DEVICE FOR GEAR CUTTING, TOOL HEAD AND GEAR CUTTING MACHINE
A device for machining a gear using a rotating machining tool. The device has a motor spindle having a drive motor and motor spindle shaft drivable by the drive motor for driving the machining tool. The device has an attachment structure for releasably attaching the device to a work spindle of a tool head. The attachment structure is configured so the tool axis is parallel to the work spindle axis when the device is attached to the work spindle. A device is further disclosed to connect a machining tool to a counter bearing in a simple manner. For this purpose, the counter bearing has a hollow shaft. A mandrel having first and second clamping regions are arranged at positions along the longitudinal axis of the mandrel. The mandrel is inserted through the hollow shaft along the tool axis into a longitudinal bore of the machining tool.
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
5.
MACHINE TOOL WITH CALIBRATION DEVICE FOR CALIBRATING A MESHING SENSOR
A machine tool for machining pre-toothed workpieces has a workpiece carrier, a workpiece spindle with a workpiece spindle housing and a workpiece spindle shaft. The machine tool has a meshing sensor, a calibration piece, and a sensor controller which is designed to perform the following procedure: Moving the meshing sensor relative to the workpiece spindle into a calibration position in which the meshing sensor is located at the calibration piece 10; determining a response behavior of the meshing sensor by the sensor controller moving the meshing sensor relative to the calibration piece and meanwhile receiving sensor calibration signals of the meshing sensor, and moving the meshing sensor into a workpiece measuring position in which the meshing sensor is located at the workpiece, the workpiece measuring position depending on the determined response behavior.
The invention relates to the working of toothings (10) by skiving, thereby producing unevenly spaced working traces (52). For this purpose, at least some cutting edges (40; 40.1, 40.2, 40.3) of a skiving tool (60; 74) extend at least partially to different heights along a tool axis (18) of the skiving tool. During the working, cutting edges arranged at different axial heights with respect to the workpiece axis (16) engage on a tooth flank (32) one after the other. The cutting edges therefore engage at different time intervals and at different distances in the width direction (54) of the tooth flank. Retroactive effects of the cutting-edge engagement on the working operation and the inducement of vibrations during the use of the toothing produced therefore have a frequency spectrum of a greater range and lower amplitude than would be the case with temporally and spatially equidistant cutting-edge engagements. In particular, the more irregular surface structure of the toothing produced has a positive effect on the tendency for noise to be induced when the toothing engages with a mating toothing.
B23F 5/16 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
B23F 21/10 - Gear-shaper cutters having a shape similar to a spur wheel or part thereof
7.
METHOD OF MONITORING THE CONDITION OF A GEAR CUTTING MACHINE
In a method of monitoring a condition of a machine tool (1) having a plurality of machine axes, at least a part of the machine axes is systematically actuated in a test cycle, and associated condition data are obtained by measurements. On this basis, EOL data correlating with a noise behavior of a gear train comprising a workpiece machined by the gear cutting machine are predicted. Disclosed is also the reverse direction in which condition data are predicted from EOL data.
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B23Q 17/00 - Arrangements for indicating or measuring on machine tools
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
B23Q 17/12 - Arrangements for indicating or measuring on machine tools for indicating or measuring vibration
B23Q 17/20 - Arrangements for indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
8.
DRESSING TOOL FOR DRESSING A GRINDING WORM FOR ROLL-TYPE MACHINING OF WORKPIECES WITH PRE-CUT TEETH
A dressing tool for dressing a grinding worm for roll-type machining of workpieces with pre-cut teeth is designed for rotation about a dressing axis of rotation (A) and has a dressing flank surface which forms a circular ring in a projection plane perpendicular to a dressing axis of rotation of the dressing tool, wherein the circular ring defines a radial direction with a radial coordinate (r) and a circumferential direction with an angle coordinate (φ). The dressing flank surface is provided with a specifically generated dressing flank modification, wherein the dressing flank modification projected onto the circular ring can be described as a two-dimensional Fourier series according to the radial coordinate (r) and the angle coordinate (φ), and wherein the Fourier series has at least one Fourier coefficient not equal to zero for a circumferential frequency component not equal to zero with respect to the angle coordinate.
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
B23F 19/00 - Finishing gear teeth by other tools than those used for manufacturing gear teeth
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B24B 53/075 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
B24B 53/085 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
The invention discloses a method and a machine tool for generating a modified surface structure on a tooth flank of an already toothed workpiece. Generation of a relative movement between the grinding worm and the toothed workpiece, the relative movement having an axial component parallel to the workpiece axis, gives rise to the formation on the tooth flank of the toothed workpiece of a plurality of adjacent contact tracks which, as seen in relation to a width direction of the workpiece, are spaced apart from one another. In order to generate a tooth-flank wave formation, a depth of penetration between the grinding worm and the workpiece is varied in a specific manner along the respective contact track such that the tooth-flank wave formations of adjacent contact tracks are displaced by a phase offset in relation to one another in a height direction of the workpiece at any desired predefined position, wherein the phase offset is between 90° and 270°, and/or wherein the phase offset in relation to the respectively adjacent contact tracks varies from contact track to contact track, and/or wherein the phase offset in relation to the adjacent contact tracks varies along one of the respective contact tracks.
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
B23F 19/00 - Finishing gear teeth by other tools than those used for manufacturing gear teeth
The invention relates to a device for grinding a workpiece and/or for dressing a tool, the device comprising: a housing; a drive shaft which is rotatable about an axis of rotation with respect to the housing and which is designed to drive a machining means that is connectable to the drive shaft, wherein the drive shaft comprises a connecting portion for connection to the machining means, and a pressure chamber to which hydraulic pressure can be applied is arranged in the connecting portion, which pressure chamber is delimited at least in portions by a resilient side wall, wherein the resilient side wall, for producing a force fit between the drive shaft and the machining means, is designed to deform when hydraulic pressure is applied to the pressure chamber.
Ui LiRįį) determined by measurements taken during the machining of a plurality of previous workpieces, each reference value being based on one or more values of the measured variable obtained during the machining of one of the previous workpieces.
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
G05B 19/406 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
B23F 1/02 - Making gear teeth by tools of which the profile matches the profile of the required surface by grinding
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
A tool changer is used for changing tools in a machine tool. The tool changer has a support structure on which a lifting carriage is guided along a vertical lifting direction. A pivot arm is pivotably mounted to the lifting carriage about a vertical pivot axis. A plurality of tool holders arranged vertically one above the other form a tool magazine. A tool gripper is attached to the pivot arm. The tool gripper grips a tool. The tool is subsequently moved between one of the tool holders and the tool spindle of the machine tool by a combined lifting and pivoting movement of the pivot arm. Optionally, an auxiliary arm pivotably attached to the pivot arm can be used to change a workpiece clamping means of the machine tool.
A tool head for a machine tool, in particular for a gear cutting machine, has a first and a second spindle unit each having at least one spindle bearing and a spindle shaft which is rotatably mounted in the respective spindle bearing about a tool spindle axis. The respective spindle bearing can support both radial and axial forces. The spindle units are arranged coaxially to each other, and a tool is received axially between the spindle shafts. A controlled clamping device connects the spindle bearings together. A control device activates the clamping device during a machining operation and deactivates it during machining pauses. Alternatively or additionally, the tool head has an axial force element that generates an axial preload force between the spindle bearings.
A tool head for a gear cutting machine includes a first spindle unit having a first spindle shaft and a second spindle unit having a second spindle shaft. A tool is axially receivable between the first spindle shaft and the second spindle shaft. A balancing device is associated with each spindle unit. The balancing device radially surrounds the respective spindle shaft and is axially arranged between a tool-side spindle bearing of the corresponding spindle unit and the tool-side end of the corresponding spindle shaft. The tool is axially clamped between the two spindle shafts by a pull rod and a clamping element.
A hub flange has a fixed flange configured to receive a tool body. A flange socket is formed on the fixed flange for connection to a spindle shaft. A counterflange is detachably connected to the fixed flange. The fixed flange and the counterflange are connected to each other via a conical connection, wherein the conical connection is arranged coaxially to the tool axis and is formed by an inner cone and an outer cone received therein.
In a method of machining workpieces in a gear grinding machine with a grinding tool having vitrified-bonded abrasive grains made of a superabrasive material. The grinding tool is first dressed. Subsequently, the dressed grinding tool is conditioned such that a desired wear condition is produced. Thereafter, pre-toothed workpieces are machined using the dressed and conditioned grinding tool. Conditioning prevents undesirable grinding-in behavior of the grinding tool, which can cause thermal damage to the edge zone of the workpiece. Conditioning is performed with a conditioning kinematics, which is different from the machining kinematics and may correspond to a dressing kinematics. For conditioning, a conditioning tool is used which has a basic shape that is different from the basic shape of the workpieces.
B24B 53/06 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
B24B 53/047 - Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels equipped with one or more diamonds
The invention relates to a rotor assembly (4) for a tool spindle (2), having - a hollow rotor (8), - an actuation device (10) for actuating a clamping device (12) for releasably fastening a tool holder (90) to the rotor (8), wherein the actuation device (10) has a pull rod (30) and a piston (32) rigidly coupled to the pull rod (30), which are movably mounted together along a movement direction (VR) in the hollow rotor (8), wherein the pull rod (30) is preloaded into a clamping position (SSt) by means of a spring device (54) and can be brought into a release position against the preloading force of the spring device (54) through the application of fluid pressure to the piston (32), wherein in the rotor (8), the piston (32) separates a pressure space (46) and a cooling space (42) from one another, wherein in the piston (8), at least one check valve (76) is provided which permits an inflow of fluid from the cooling space (42) into the pressure space (46) and prevents an outflow of fluid from the pressure space (46) into the cooling space (42), wherein a first fluid connection (78) is provided which is fluidically connected to the pressure space (46), wherein in the pull rod (30), a fluid guide (56) is formed through which fluid can be introduced into the cooling space (42), and wherein a second fluid connection (80) is provided which is fluidically connected to the fluid guide (56). The invention makes possible an automated tool change on a simply constructed and effectively coolable tool spindle.
B23B 31/26 - Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle
B23Q 11/12 - Arrangements for cooling or lubricating parts of the machine
B23B 31/30 - Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
18.
METHOD FOR CHECKING A MACHINING PROCESS FOR COLLISIONS, USING A REPLACEMENT WORKPIECE
The invention relates to a method for checking a machining process for collisions, wherein a process-specific cycle is provided for the machining process, during which cycle a plurality of machining components (B) are intended to be moved relative to one another via at least one machine axis (A, X, Y, Z) on a machine tool (2), the machining components (B) comprising at least a workpiece (20) and a tool (7), and the workpiece (20) is intended to rotate about a workpiece axis (WSA) and the tool (7) is intended to rotate about a tool axis (WZA) at least during a part of the process-specific cycle, which method is characterised in that: in the process-specific cycle, at least one checking position is identified, the checking position corresponding to a relative position of the machining components (B) which is set via the at least one machine axis (A, X, Y, Z); and, in order to check a checking position for collisions, the relative position of the machining components (B) is simulated, wherein one or more replacement machining components (E) are used during simulation, which replacement machining components are each a replication or a partial replication of the corresponding machining component (B) and comprise a replacement workpiece (3) which is a partial replication of the workpiece (20), wherein, in the replacement workpiece (3), at least over an axial portion (17), the workpiece (20) is replicated merely over a part of the circumference of the workpiece (20), and wherein the replacement workpiece (3) is rotated about its workpiece axis (WSA) in the simulated relative position. The invention is a simple, economical and reliable method for checking a machining process for collisions.
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. (Germany)
Inventor
Zimmer, Maximilian
Hamm, Martin
Abstract
The invention relates to a method for roll-machining a gear-shaped workpiece (23), in particular by means of a continuous generating grinding process, in which the gear-shaped workpiece is rotated about a workpiece axis (C) while meshing with a roll machining tool. The gear-shaped workpiece is subjected to an oscillating movement during the machining process, said oscillating movement being superimposed with the rotation of the gear-shaped workpiece. The invention likewise relates to a clamping device (22) which is designed to carry out the method, to a system which comprises such a clamping device and a controller (50), and to a roll machining machine which comprises a clamping device of the aforementioned type.
The invention relates to a device for transporting an object to a grinding machine and/or away from a grinding machine, with said device comprising: a base; a support arranged on the base, which can be rotated about a first axis of rotation in relation to the base; a pivot device arranged on the support for transporting the object, wherein the pivot device can be pivoted about a second axis of rotation in relation to the support, and the device is designed to simultaneously perform a rotational movement of the support about the first axis of rotation and a pivot movement of the pivot device about the second axis of rotation at least periodically in such a way that the object can be transported by means of a transporting movement of the pivot device resulting from the superimposition of the rotational movement of the support and the pivot movement of the pivot device.
B24B 53/085 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
B23Q 7/02 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of drums or rotating tables or discs
B23Q 7/04 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B24B 49/00 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
21.
DATA MANAGEMENT METHOD, IN PARTICULAR FOR EQUIPMENT OF A MACHINE TOOL, AND EQUIPMENT AND MACHINE TOOL FOR PERFORMING THE METHOD
In a data management method, in particular for equipment of a machine tool, data from equipment (23, 28, 29) of the machine tool (20), at least with regard to the identification thereof, are acquired and stored. According to the invention, this data management takes place in a machine tool (20) for the production of gearwheels and/or the machining of tooth systems in which in particular dressing tools, clamping means, grinding tools and/or the like are used as equipment (23, 28, 29), these each being equipped with at least one transponder (23', 28', 29') in order to acquire in particular the identification thereof and preferably further parameters, such as payload data and geometry data. These transponders (23', 28', 29') are able to communicate with at least one transmission/reading unit (30) assigned to the machine tool (20) in order to wirelessly transmit data signals. This data management makes it possible to produce precisely manufactured gearwheels with significantly lower defect rates and thus makes it possible to achieve an improved quality standard while maximizing the service lives of the machining tools.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
A gripping device having a holder and two gripper units. Each of the gripper units has a base body and two base jaws. The base jaws can be moved synchronously in opposite directions relative to the respective base body. The gripper units are arranged side by side on the holder so that the base jaws of both gripper units can be moved parallel to a common gripper plane. The gripping device is designed as a single gripper in that only a first gripper finger is attached to each of the two outer base jaws. It can very easily be converted to a double gripper by attaching two further gripper fingers to the inner base jaws, or by removing the first gripper fingers and attaching a second gripper finger to each of the four base jaws.
Apparatus (1) for loading and unloading a workpiece (40, 41) into or from a machine tool (30) for machining toothing systems, in particular a hard finishing machine (30), the apparatus (1) comprising: a base (2), a support (3), which is arranged on the base (2) and which can be rotated about a first axis of rotation (D1) with respect to the base (2), and a gripping device (11), which is arranged on the support (3), for gripping and releasing the workpiece (40, 41), wherein the gripping device (11) has at least two gripping arms (13, 14, 15), which can each be pivoted independently of one another about a second axis of rotation (D2), and the gripping arms (13, 14, 15) can be pivoted relative to one another about the second axis of rotation (D2) in such a way that the gripping arms (13, 14, 15) can assume, relative to one another, a gripping position for gripping the workpiece (40, 41) and a release position for releasing the workpiece (40, 41), and the gripping arms (13, 14, 15), at least in the gripping position, can be pivoted synchronously with one another about the second axis of rotation (D2).
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B23Q 7/04 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
B23F 1/02 - Making gear teeth by tools of which the profile matches the profile of the required surface by grinding
B23F 5/02 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding
B23F 9/02 - Making gears having teeth curved in their longitudinal direction by grinding
G05B 19/406 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
25.
METHOD FOR MONITORING THE STATE OF A GEAR CUTTING MACHINE
In a method for monitoring a state of a machine tool (1) having a plurality of machine axes, at least some of the machine axes are systematically tested in a test cycle, and associated state data is ascertained by performing measurements. On this basis, EOL data is predicted, this data correlating with noise behaviour of a gear mechanism which contains a workpiece machined using the gear cutting machine. The reverse direction, in which state data is predicted from EOL data, is also disclosed.
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
G05B 19/18 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
A pulling device for generating a pulling movement in a clamping device has a pull-acting hydraulic working cylinder with a pull piston displaceable therein and a pull rod connected to the pull piston. In order to make the pulling device particularly compact and easy to maintain, the pulling device also has a push-acting hydraulic pump cylinder with a pump piston displaceable therein and a fluidic connection between the pump cylinder and the working cylinder. A movement of the pump piston in a pushing direction causes the hydraulic fluid to flow from the pump cylinder into the working cylinder, where it causes a pulling movement of the pull piston in a pulling direction. The pulling direction is opposite to the pushing direction, and the pump cylinder and the working cylinder are arranged coaxially to each other.
A device (100) for gear-cutting machining using a rotating machining tool (150) is disclosed. The device has a motor spindle (130) with a drive motor (134) and a motor spindle shaft (133) which can be driven by the drive motor (134) and by means of which the machining tool (150) can be driven. The device additionally has a fastening structure (120) for releasably mounting the device on a working spindle of a tool head. The fastening structure (120) is designed in such a way that the tool axis (B) runs parallel to the working spindle axis when the device is mounted on the working spindle of the tool head. Also disclosed is a device which makes it possible to connect a machining tool (150) to a counter-bearing (140) in a simple manner. For this purpose, the counter-bearing has a hollow shaft (143). A clamping mandrel (160) having first and second clamping regions which are arranged at different positions along the longitudinal axis of the clamping mandrel. The clamping mandrel is introduced through the hollow shaft along the tool axis into a longitudinal bore (156) of the machining tool (150).
A machine tool for machining workpieces with precut teeth has a workpiece carrier (20), a workpiece spindle (21) with a workpiece spindle housing (211) and a workpiece spindle shaft (212) which can be rotated about a workpiece spindle axis (A). Furthermore, the machine tool has a centring sensor (1) which is designed to determine a phase position of teeth of a workpiece (23) rotating about the workpiece spindle axis (A), a calibrating piece (10) which is situated at a defined calibrating location (CM) relative to the workpiece spindle (21), and a sensor controller which is designed to carry out the following method: moving the centring sensor (1) relative to the workpiece spindle (21) into a calibrating position in which the centring sensor (1) is situated at the calibrating piece (10); determining a response behaviour of the centring sensor (1) in that the sensor controller (3) moves the centring sensor (1) relative to the calibrating piece (10) and in so doing receives sensor-calibrating signals from the centring sensor (1), and moving the centring sensor (1) into a workpiece-measuring position (PW) in which the centring sensor (1) is situated at the workpiece, wherein the workpiece-measuring position depends on the determined response behaviour.
B23F 23/00 - Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B23Q 17/22 - Arrangements for indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
G05B 19/401 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
29.
METHOD FOR WORKING A WORKPIECE WITH TWO TOOTHINGS, POSITIONING DEVICE FOR DETERMINING A REFERENCE ROTATIONAL ANGLE POSITION OF THE WORKPIECE AND POWER TOOL WITH SUCH A POSITIONING DEVICE
In a method of machining a workpiece (60) having first and second gearings (61, 62), a reference tooth structure of the first gearing (61) is identified. The reference tooth structure is then measured with a reference measuring device (140) to determine a reference rotational angular position of the workpiece. Subsequently, the second gearing (62) is machined in such a way that the second gearing obtains a rotational angular position which is in a predetermined relationship to the determined reference rotational angular position.
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
30.
MACHINE TOOL FOR MACHINING TEETH, METHOD FOR MACHINING TOOTH FLANKS OF A WORKPIECE, AND METHOD FOR DRESSING A TOOL FOR MACHINING TEETH USING A MACHINE TOOL OF THIS TYPE
A machine tool (1) for processing gears comprises a workpiece spindle (16) for driving a workpiece (18) to rotate about a workpiece axis (C1), and a tool spindle (11) for driving a tool (12) to rotate about a tool axis (B). An axial slide (7) is used to change a relative axial feed position between the tool spindle and the workpiece spindle with respect to the workpiece axis. The axial slide is guided along an axial guide direction (Z′) which is inclined with respect to the workpiece axis by an inclination angle (ψ), the inclination angle (ψ) being between 0.1° and 30°.
B23F 1/02 - Making gear teeth by tools of which the profile matches the profile of the required surface by grinding
B23F 19/00 - Finishing gear teeth by other tools than those used for manufacturing gear teeth
B23F 23/00 - Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
B23F 9/02 - Making gears having teeth curved in their longitudinal direction by grinding
31.
Dressing Tool and Method for the Production Thereof
Dressing tool which has profiled elements arranged coaxially with one another and which are each provided with a profile form, which is tapered or the like in its axial cross-section and has working surfaces provided with hard-material particles. The profiled elements are delimited at their outer circumference by at least one generated surface. The dressing tool preferably includes six profiled elements arranged coaxially with one another, and a one-part or two-part metallic main body for the entire dressing tool or for a particular generated surface. The profile forms with the hard-material particles of the profiled elements may be produced by a negative process with a casting compound applied to the particular main body. This dressing tool can thus be used for a profiling of grinding worms extremely productively and precisely and also such that they can be corrected.
B24B 53/075 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
32.
AUTOMATIC PROCESS CONTROL IN A GEAR PROCESSING MACHINE
A method for monitoring a machining process in which tooth flanks of pre-toothed workpieces (23) are machined with a finishing machine (1) is disclosed. As part of the method, a plurality of measurement values are recorded while a finishing tool (16) is in machining engagement with a workpiece. Among them are values of a power indicator which indicates a current power consumption of the tool spindle during the machining of the tooth flanks of the workpiece. A normalization operation is applied to at least some of the measurement values or to values of a quantity derived from the measurement values in order to obtain normalized values. The normalization operation depends on at least one of the following parameters: geometrical parameters of the finishing tool, in particular its outside diameter, geometrical parameters of the workpiece and setting parameters of the finishing machine, in particular radial infeed and axial feed.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
33.
MACHINE TOOL FOR THE MACHINING OF ROTARY PARTS WITH GROOVE-LIKE PROFILES BY A GENERATING METHOD
A machine tool is designed for the machining of rotary parts with groove-shaped profiles, in particular gears, by a generating method. On the one hand, a Y slide (200) is arranged on a machine bed (100), the Y slide being displaceable along a Y direction and carrying a workpiece spindle (210). The workpiece spindle drives a workpiece (220) to rotate about a workpiece axis (C). On the other hand, a Z slide (300) is arranged on the machine bed. The Z slide is arranged along a Z direction running parallel to a center plane (E1) spanned by the Y direction and the workpiece axis. An X slide (310) is arranged on the Z slide and can be displaced along an X direction relative to the Z slide (300). The X direction is perpendicular to the center plane. A tool spindle (320) is arranged on the X slide, which drives a tool to rotate about a tool axis. The tool spindle can be swiveled relative to the X slide in a swivel plane (E2), which runs parallel to the center plane, about a swivel axis (A).
B23F 5/16 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
B23Q 1/62 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only two sliding pairs only with perpendicular axes, e.g. cross-slides
34.
Method of manufacturing a modular clamping device for rotationally symmetrical bodies and clamping device manufactured therewith
A method of manufacturing a modular clamping device for clamping a rotationally symmetrical body on a spindle head of a motor spindle is disclosed. The modular clamping device includes a clamping element and a first intermediate piece. In the method, a first intermediate piece assembly (22) is provided having a plurality of prefabricated, standardized first standard intermediate pieces. The first intermediate piece (210) is selected from the first intermediate piece assortment (22). The clamping element is fabricated, and the first intermediate piece is positioned relative to the clamping element such that the first intermediate piece is positioned axially between the spindle head and the clamping element when the clamping device is mounted to the spindle head.
In a method for machining workpieces in a tooth-grinding machine having a grinding tool (320) which has ceramically bonded abrasive particles consisting of a superabrasive material, the grinding tool is first dressed. Then, the dressed grinding tool is conditioned such that a desired wear state of the grinding tool is produced. Then, pre-toothed workpieces are machined using the dressed and conditioned grinding tool. The conditioning prevents an undesired grinding-in behaviour of the grinding tool in which thermal damage to the edge zone of the workpiece can occur. Conditioning is carried out with conditioning kinematics which differ from machining kinematics and can correspond to dressing kinematics. A conditioning tool (416; 425) having a basic shape which differs from the basic shape of the workpieces is used for conditioning.
B24B 53/047 - Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels equipped with one or more diamonds
B24B 53/06 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
36.
TOOL HEAD COMPRISING BALANCING DEVICES AND A CLAMPING ELEMENT, AND MACHINE TOOL COMPRISING SUCH A TOOL HEAD
The invention relates to a tool head (300) for a gear cutting machine, comprising a first spindle unit (320) having a first spindle shaft (322) and a second spindle unit (330) having a second spindle shaft (332). A tool (340) is axially receivable between the first spindle shaft and the second spindle shaft. Each spindle unit is assigned a balancing device (350, 360). The balancing device radially surrounds the respective spindle shaft and is axially arranged between a tool-side spindle bearing (323, 333) of the corresponding spindle unit and the tool-side end of the corresponding spindle shaft. The tool is axially clamped between both spindle shafts with a tie rod (370) and a clamping element (372).
The invention relates to a receiving flange (101) having a fixed flange (110) which is designed to receive a tool body (130). A flange receiving area (111) is formed on the fixed flange (110) in order to connect to a spindle shaft. A counter flange (120) is releasably connected to the fixed flange. The fixed flange (110) and the counter flange (120) are connected together via a conical connection (150), wherein the conical connection (150) is coaxial to the tool axis (B) and is formed by an inner cone (151) and an outer cone (152) received therein.
B24B 53/075 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
B23F 1/02 - Making gear teeth by tools of which the profile matches the profile of the required surface by grinding
B23Q 3/12 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for securing to a spindle in general
The invention relates to a tool head (300) for a machine tool, in particular a gear cutting machine, comprising a first and a second spindle unit (320, 330) with in each case at least one spindle bearing (323, 333) and a spindle shaft (322, 332) which is mounted in the respective spindle bearing so as to be rotatable about a tool spindle axis (B) . The respective spindle bearing can absorb both radial forces and axial forces. The spindle units are arranged coaxially to one another, and a tool (340) is axially received between the spindle shafts. A controlled clamping device (600) connects the spindle bearings to one another. A control device (730) activates the clamping device (600) during a machining operation and deactivates it in pauses between machining operations. Alternatively or additionally, the tool head comprises an axial force element which generates an axial prestressing force between the spindle bearings.
A tool changer (200) serves to exchange tools (500) in a machine tool (100). The tool changer has a supporting structure (210), on which a lifting carriage (240) is guided along a vertical lifting direction (Z3). A pivoting arm (250) is attached to the lifting carriage (240) so as to be pivotable about a vertical pivot axis (C3). A plurality of tool holders (221, 222, 223, 230) which are arranged vertically above one another form a tool magazine (220). A tool gripper (260) is attached to the pivoting arm (250). The tool gripper grips a tool (500). The tool is subsequently moved by way of a combined lifting and pivoting movement of the pivoting arm (250) between one of the tool holders and the tool spindle of the machine tool. An additional arm (252) is optionally attached pivotably to the pivoting arm (250). A workpiece clamping means of the machine tool can be replaced with the aid of the additional arm (252).
A method for automatic process monitoring during continuous generating grinding of pre-toothed workpieces, which permit early detection of grinding wheel breakouts. A generating grinding machine is used to machine multiple workpieces by clamping them onto at least one workpiece spindle and successively moving them into generating engagement with a grinding wheel. At least one measured variable is monitored during the machining to indicate if a grinding wheel breakout exists. If a grinding wheel breakout is indicated, the grinding wheel is examined automatically by moving a dressing tool over the tip region of the grinding wheel and generating a contact signal. A breakout is determined by analyzing the contact signal and, if present, the grinding wheel is dressed as often as necessary in order to eliminate the grinding wheel breakout. Alternatively, the checking of the grinding wheel is carried out directly at the first dressing stroke.
A control panel for a machine tool has a housing (1). The housing comprises a housing base part (2) and a housing front part (3). A display (19) and a control element panel (20, 21) are attached to the front part of the housing. In the region of the housing bottom side, the housing front part is connected to the housing base part by miter hinges so that it can be swiveled to provide access to the interior of the housing. Fold-out supports (13) make it possible to use an alphanumeric keyboard (15) for maintenance work. Indentations (5) on both sides of the housing rear allow the housing to be easily grasped. Control elements (18) are arranged in the indentations.
B23Q 1/00 - Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
G05B 19/409 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panelNumerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control panel details or by setting parameters
A gripping device comprises a holder (100) and two gripper units (210, 210'). Each of the gripper units has a main body (211; 211') and two base cheeks (212, 213; 212', 213'). The base cheeks can be synchronously moved in opposite directions to each other relative to the main body. The gripper units are adjacent to each other on the holder, and thus the base cheeks of the two gripper units can be moved parallel to a common gripper plane. The gripping device is configured as a single gripper by the attachment a first gripper finger (250; 250') only to each of the two outer base cheeks (212, 212'). The gripping device can be very easily converted to the double gripper by the attachment of two additional gripper fingers to the inner base cheeks or by the removal of the first gripper fingers and the attachment of a second gripper finger to each of the four base cheeks.
B23Q 7/04 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
An adjusting device for a machine tool comprises a base body (1), a movable body (2) movable along a moving direction (X) relative to the base body, and a drive (3) for moving the movable body relative to the base body. In order to effectively damp vibrations between the movable body and the base body (in particular so-called stray vibrations) and yet still enable rapid positioning movements of the movable body relative to the base body, the adjusting device comprises an auxiliary body (10) which can be releasably fixed to the base body and, in the released state, can be moved together with the movable body relative to the base body. The adjusting device also comprises at least one vibration damper (11) which is arranged between the auxiliary body and the movable body.
B23Q 1/58 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only a single sliding pair
B23Q 1/28 - Means for securing sliding members in any desired position
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
44.
METHOD FOR WORKING A WORKPIECE WITH TWO TOOTHINGS, POSITIONING DEVICE FOR DETERMINING A REFERENCE ROTATIONAL ANGLE POSITION OF THE WORKPIECE AND POWER TOOL WITH SUCH A POSITIONING DEVICE
In a method for working a workpiece (60) that has a first and a second toothing (61, 62), a reference tooth structure of the first toothing (61) is identified. The reference tooth structure is then measured with a reference measuring device (140) in order to determine a reference rotational angle position of the workpiece. Subsequently, the second toothing (62) is worked in such a way that the second toothing is provided with a rotational angle position that is in a predetermined relationship with the reference rotational angle position determined. A positioning device (100) determines the reference rotational angle position of the workpiece, and a power tool has this positioning device.
B23F 15/00 - Methods or machines for making gear wheels of special kinds, not covered by groups
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B23F 23/00 - Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
G05B 19/18 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
45.
DRESSING TOOL AND METHOD FOR THE PRODUCTION THEREOF
The invention relates to a dressing tool which has profiled elements (11.1, 11.2, 12.1, 12.2, 12.3, 12.4) which are arranged coaxially with one another and which are each provided with a profile form, which is tapered or the like in its axial cross-section and has working surfaces (13, 14) which are provided with hard-material particles. The profiled elements (11.1, 11.2, 12.1, 12.2, 12.3, 12.4) are delimited at their outer circumference by at least one generated surface (23, 24). The dressing tool (10) comprises six profiled elements (11.1, 11.2, 12.1, 12.2, 12.3, 12.4) arranged coaxially with one another and a one-part or two-part metallic main body (19) for the entire dressing tool (10) or for a particular generated surface (23, 24). The profile forms with the hard-material particles of the profiled elements (11.1, 11.2, 12.1, 12.2, 12.3, 12.4) are produced here by a negative process with a casting compound (15) applied to the particular main body (19). This dressing tool can thus be used for a profiling of grinding worms extremely productively and precisely and also such that they can be corrected.
B24B 53/07 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels by means of forming tools having a shape complementary to that to be produced, e.g. blocks, profile rolls
B24B 53/075 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
B24B 53/053 - Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels using a rotary dressing tool
B24B 53/06 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
46.
MACHINE TOOL FOR MACHINING TEETH, METHOD FOR MACHINING TOOTH FLANKS OF A WORKPIECE, AND METHOD FOR DRESSING A TOOL FOR MACHINING TEETH USING A MACHINE TOOL OF THIS TYPE
The invention relates to a machine tool (1) for machining teeth comprising: a workpiece spindle (16) for driving a workpiece (18) to rotation about a workpiece axis (C1); and a tool spindle (11) for driving a tool (12) to rotation about a tool axis (B). An axial slide (7) is used to change a relative axial advancing position between the tool spindle and the workpiece spindle with respect to the workpiece axis. The axial slide is guided along an axial guiding direction (Z'), which is inclined with respect to the workpiece axis by an angle of inclination (Ψ), the angle of inclination (Ψ) being between 0.1° and 30°.
B23F 1/02 - Making gear teeth by tools of which the profile matches the profile of the required surface by grinding
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
B23F 9/02 - Making gears having teeth curved in their longitudinal direction by grinding
B23F 15/00 - Methods or machines for making gear wheels of special kinds, not covered by groups
B23F 19/00 - Finishing gear teeth by other tools than those used for manufacturing gear teeth
B23F 23/00 - Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
47.
AUTOMATIC PROCESS MONITORING IN A TOOTHING MACHINE
The invention relates to a method for monitoring a machining process in which tooth flanks of previously toothed workpieces (23) are machined with a fine-machining apparatus (1). In the method, a plurality of measured values are collected while a fine-machining tool (16) is in machining engagement with a workpiece. Said measured values include values of a power indicator which indicates the current power consumption of the tool spindle during machining of the tooth flanks of the workpiece. A normalisation operation is applied to at least some of the measured values or to values of a variable derived from the measured values, to obtain normalised values. The normalisation operation depends on at least one of the following parameters: geometric parameters of the fine-machining tool, in particular the outer diameter thereof, geometric parameters of the workpiece, and setting parameters of the fine-machining apparatus, in particular radial infeed and axial feed.
G05B 19/406 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
48.
MACHINE TOOL AND METHOD FOR THE ROLL MACHINING OF ROTATIONAL PARTS HAVING GROOVE-SHAPED PROFILES
The invention relates to a machine tool for the roll machining of rotational parts having groove-shaped profiles, in particular sets of teeth. A Y-slide (200) is arranged on a machine bed (100), which Y-slide can be slid in a Y-direction and bears a workpiece spindle (210). The workpiece spindle drives a workpiece (220) to rotate about a workpiece axis (C). A Z-slide (300) is also arranged on the machine bed. The Z-slide is arranged along a Z-direction, which runs parallel to a center plane (E1) spanned by the Y-direction and the workpiece axis. An X-slide (310) is arranged on the Z-slide, which X-slide can be slid in an X-direction relative to the Z-slide (300). The X-direction runs perpendicularly to the center plane. A tool spindle (320) is arranged on the X-slide, which tool spindle drives a tool to rotate about a tool axis. The tool spindle can be pivoted relative to the X-slide in a pivoting plane (E2) about a pivot axis (A), the pivoting plane running parallel to the center plane.
B23Q 1/62 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only two sliding pairs only with perpendicular axes, e.g. cross-slides
B23F 5/16 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
49.
Method and device for measuring a roll machining tool
The invention relates to a method for measuring a tool (1) for roll machining toothed workpieces, wherein a virtual contact points is calculator on a rounded virtual blade of a virtual tool. The relative orientation between the tool axis (B) and the measuring device (11) as well as a translational relative position between the tool and the measuring device are then calculated and adjusted on the basis of the calculated virtual contact point. The measurement is taken on the real blade in the adjusted relative orientation and relative position, and the measurement can be taken in particular using a cylindrical scanning means in the form of a laser beam, wherein the cylindrical scanning means tangentially contacts the virtual blade in the virtual contact point.
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B23F 5/16 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
B23Q 17/00 - Arrangements for indicating or measuring on machine tools
G05B 19/406 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
G01L 19/00 - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
51.
METHOD FOR AUTOMATIC PROCESS MONITORING IN CONTINUOUS GENERATION GRINDING
The invention relates to a method for automatic process monitoring in continuous generation grinding of pre-toothed workpieces (23), said method enabling the early detection of grinding disc chips. A plurality of workpieces are machined with one generation grinding machine (1). To this end, the workpieces are clamped on at least one workpiece spindle (21) and are brought into rolling engagement with a grinding disc (16) one after the other. At least one measurement parameter is monitored during machining. A warning indicator (W) for a grinding disc chip (19) is determined from said parameter. The grinding disc is automatically investigated if the warning indicator indicates a grinding disc chip. To this end, a dressing tool (33) moves over the head region of the grinding disc, and a contact signal is determined during said movement over the head region. A chip indicator (A) is determined from an analysis of the contact signal, the chip indicator showing whether there is a grinding disc chip. Should this be the case, the grinding disc is dressed as many times as needed to eliminate the grinding disc chip. Alternatively, the grinding disc is checked directly on the first dressing stroke.
B23F 1/02 - Making gear teeth by tools of which the profile matches the profile of the required surface by grinding
B23F 5/04 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
G05B 19/4065 - Monitoring tool breakage, life or condition
B24B 53/085 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
B24B 53/075 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
A control panel for a machine tool has a housing (1). The housing comprises a housing base portion (2) and a housing front portion (3). A display (19) and a control element panel (20, 21) are attached to the housing front portion.
G05B 19/409 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panelNumerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control panel details or by setting parameters
53.
MEASUREMENT OF CHARACTERISTIC VARIABLES OF A PRECISION MACHINING TOOL
The invention relates to a machine for the precision machining of toothed workpieces, which machine comprises a tool spindle (30) for mounting a precision machining tool (31). The tool spindle can be driven to rotate about a tool spindle axis (B) by means of a tool spindle drive (32). A control device (70) takes at least one measurement of the distance from the precision machining tool (31) by means of a distance sensor (60) and, on the basis of said measurement(s), determines at least one characteristic variable of the precision machining tool, in particular the outer diameter thereof. The distance sensor can operate optically in particular.
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
B24B 53/085 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B23Q 17/22 - Arrangements for indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
54.
ADJUSTING DEVICE FOR A GEAR CUTTING MACHINE WITH A REDUCED TENDENCY TO VIBRATE
The invention relates to an adjusting device for a machine tool, having a main part (1), a movable body (2) which can be moved relative to the main part along a movement axis (X), and a drive (3) in order to move the movable body relative to the main part. The aim of the invention is to effectively damp vibrations between the movable body and the main part, in particular stray vibrations, while still allowing quick positioning movements of the movable body relative to the main part. This is achieved in that the adjusting device has an auxiliary element (10) which can be releasably fixed to the main part and can be moved together with the movable body relative to the main part in the released state. The adjusting device additionally has at least one vibration damper (11) which is arranged between the auxiliary element and the movable body.
B23Q 1/28 - Means for securing sliding members in any desired position
B23Q 1/58 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only a single sliding pair
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
F16C 29/00 - Bearings for parts moving only linearly
The invention relates to a device for monitoring the contact of a workpiece (1) or tool on a spindle (2) of a machine tool, which device has a contact surface (3) for the workpiece (1) or tool. At least one measurement nozzle (4) is arranged in the region of the contact surface in order to produce a fluid flow directed away from the contact surface (3). Upstream of the measurement nozzle, the fluid flow is conducted through a vacuum nozzle, which can comprise a jet nozzle (7c) and a collector nozzle (7b). When the fluid medium flows through the vacuum nozzle, the vacuum nozzle produces a negative pressure in a negative pressure chamber (9c). A pressure sensor (6) or pressure switch senses a measurement pressure (p3) in the negative pressure chamber.
A tool for hob peeling rotating workpieces having pre-machined teeth comprises a gear-wheel shaped main body and tooth-shaped cutting inserts (1.2) which at the end face in the region of the tip circle are disposed on the main body. Each cutting insert comprises at least one cutting tooth. The cutting tooth forms a cutting edge (6) which runs at least along one of the flanks of the cutting tooth, and a cutting face and a clearance face. The cutting face along the cutting edge is provided with a cutting face chamfer (7) which in relation to the cutting face (5.5) runs so as to be inclined by a chamfer angle. The chamfer angle varies along the cutting edge. Moreover, the cutting edge is rounded by a radius.
B23F 21/06 - Planing or slotting tools having a profile which matches a gear tooth profile
B23F 5/16 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
B23C 5/20 - Milling-cutters characterised by physical features other than shape with removable cutter-bits or teeth
B23F 21/10 - Gear-shaper cutters having a shape similar to a spur wheel or part thereof
57.
METHOD AND DEVICE FOR MEASURING A ROLL MACHINING TOOL
The invention relates to a method for measuring a tool (1) for roll machining toothed workpieces, wherein a virtual contact point is calculated on a rounded virtual blade of a virtual tool. The relative orientation between the tool axis (B) and the measuring device (11) as well as a translational relative position between the tool and the measuring device are then calculated and adjusted on the basis of the calculated virtual contact point. The measurement is taken on the real blade in the adjusted relative orientation and relative position, and the measurement can be taken in particular using a cylindrical scanning means in the form of a laser beam, wherein the cylindrical scanning means tangentially contacts the virtual blade in the virtual contact point.
The invention relates to a machine for the precision machining of toothed workpieces, which machine comprises a tool spindle (30) for mounting a precision machining tool (31). The tool spindle can be driven to rotate about a tool spindle axis (B) by means of a tool spindle drive (32). A control device (70) takes at least one measurement of the distance from the precision machining tool (31) by means of a distance sensor (60) and, on the basis of said measurement(s), determines at least one characteristic variable of the precision machining tool, in particular the outer diameter thereof. The distance sensor can operate optically in particular.
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
B24B 53/085 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
59.
HOB PEELING TOOL AND METHOD FOR HARD-FINE MACHINING OF PRE-TOOTHED WORKPIECES
A tool for hob peeling pre-toothed, rotating workpieces comprises a gear-shaped main body and tooth-shaped cutting inserts (1.2), which are arranged on the front side of the main body in the region of the tip circle. Each cutting insert comprises at least one cutting tooth. The cutting tooth forms a cutting edge (6), which at least extends along one of the flanks of the cutting tooth, as well as a rake face and a flank face. Along the cutting edge, the rake face is provided with a rake surface chamfer (7) which is angled relative to the rake surface (5.5) at a chamfer angle. The chamfer angle varies along the extent of the cutting edge. In addition, the cutting edge is rounded with a radius.
B23F 5/16 - Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
B23F 21/10 - Gear-shaper cutters having a shape similar to a spur wheel or part thereof
B23F 21/06 - Planing or slotting tools having a profile which matches a gear tooth profile
60.
Open-pore, ceramic-bonded grinding tools, method for producing same, and pore former mixtures used to produce same
B24D 3/18 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings for porous or cellular structure
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
The invention relates to an electrical machine having a rotor (1), a stator (2) radially surrounding the rotor, and a housing (4) radially surrounding the stator. In order to minimize stresses in the housing and nonetheless decrease the tendency of the stator to torsional vibrations, the stator is connected to the housing at least at one end in a radially and torsionally rigid but axially movable manner, for example, by way of an axially compliant material area. The electrical machine can, in particular, be a motor spindle in a gear finishing machine.
H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 5/15 - Mounting arrangements for bearing-shields or end plates
The invention relates to a device for machining workpieces with precut teeth, having a workpiece support and at least one workpiece spindle arranged on the workpiece support for clamping a workpiece (8). A centering device (20.1) for the workpieces comprises a probe holder (30) with a centering probe (26), which operates in a contactless manner, and a base element (37). The probe holder is connected to the base element such that the probe holder has a variable radial distance to the workpiece spindle axis. The base element is designed as a slide which can be moved relative to the workpiece support. A linear guide for the base element allows a movement of the base element relative to the workpiece support. An adjustment drive for the centering device can be arranged above the centering device on a backrest of the workpiece support.
B23Q 17/20 - Arrangements for indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
B23Q 3/18 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for positioning only
G05B 19/18 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
63.
Method and devices for the rapid and flexible dressing of grinding worms
Disclosed is a method for dressing a single- or multi-thread grinding worm (34) in which a main rolling movement between the grinding worm and a gear-like dressing tool (90) is brought about. In order to create flank modifications on the grinding worm, an additional relative movement is superimposed on the main rolling movement. In addition, an auxiliary drive specifically designed for such a method, a correspondingly designed machine tool and a dressing tool for carrying out the method are disclosed.
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
B24B 53/075 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
The present invention relates to a method for producing open-pore, ceramic-bound abrasive tools having a pore fraction of between 20 and 80 % by volume, wherein a mixture of abrasive grains (31), binder (32) and pore forming agents is used, the pore forming agents comprising inorganic solid particles, in particular glass-like, crystalline and/or amorphous and/or semi-crystalline inorganic solid particles, with an average particle diameter of between 400 and 2000 μm.
B24D 3/18 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings for porous or cellular structure
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
65.
SPINDLE UNIT FOR A MACHINE TOOL FOR FINE-MACHINING WORKPIECES THAT HAVE GROOVED-SHAPED PROFILES
A spindle unit for a machine tool for fine-machining workpieces that have groove-shaped profiles, such as, for example, toothings, has a rotatably mounted spindle shaft (2). Said spindle shaft is subdivided in the axial direction (AR), one behind the other, into a fastening portion (A) for fastening a tool (4) or a workpiece to be machined, a first bearing portion (B), a force transmission portion (C), and a second bearing portion (D). A drive unit (5) serves to drive the spindle shaft (2) by way of force transmission onto the force transmission portion (C). A first and a second bearing point (13, 14) are designed to bear the spindle shaft (2) in the first bearing section (B), and a third bearing point (15) serves to mount the spindle shaft (2) on the second bearing portion (D). The first and the second bearing points (13, 14) each have one or more hydrostatic bearings and are designed to receive radial and axial forces. The third bearing point (15) has one or more hydrostatic and/or hydrodynamic bearings and is designed to receive radial forces.
F16C 35/10 - Rigid support of bearing unitsHousings, e.g. caps, covers for spindles with sliding-contact bearings
F16C 32/06 - Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
B23Q 1/38 - Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable membersMeans for preventing relative movement of such members using fluid bearings or fluid cushion supports
66.
OPEN-PORE, CERAMIC-BONDED GRINDING TOOLS, METHOD FOR PRODUCING SAME, AND PORE FORMER MIXTURES USED TO PRODUCE SAME
In a method for producing open-pore, ceramic-bonded grinding tools, a pore former mixture consisting of at least two polymers having different firing curves, the maxima of which differ by at least 20°C, is used. The polymers are preferably thermoplastics that can be decomposed exclusively into CO2 and water during combustion. The resulting grinding tool has a multimodal pore size distribution.
B24D 3/18 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings for porous or cellular structure
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof
C04B 38/06 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof by burning-out added substances
The invention relates to an electrical machine having a rotor (1), a stator (2) radially surrounding the rotor, and a housing (4) radially surrounding the stator. In order to minimize stresses in the housing and nonetheless decrease the tendency of the stator to torsional vibrations, the stator is connected to the housing at least at one end in a radially and torsionally rigid but axially movable manner, for example, by way of an axially compliant material area. The electrical machine can, in particular, be a motor spindle in a gear finishing machine.
A machine tool comprises a first component, for example a dressing spindle (3), and at least one second component, for example a dressing wheel (1), which is removably and/or movably arranged on the first component. The first component has a first antenna coil for a wireless signal transmission, and the second component has a second antenna coil. The two components together delimit a cavity which is completely surrounded by metal. The first antenna coil and the second antenna coil are arranged together in the cavity. This forms a metal-protected radio link (26.1) between the first antenna coil and the second antenna coil, which radio link is protected from harmful external influences.
B23F 23/12 - Other devices, e.g. tool holdersChecking devices for controlling workpieces in machines for manufacturing gear teeth
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
69.
Dressing tool and method for the production thereof
Dressing tool including a main body having a working surface covered with hard-material grains distributed on the main body. Recesses for accommodating the hard-material grains are created in the main body and then filled with an adhesive, the excess adhesive is removed across the main body, and thereafter the hard-material grains are flung onto the main body so that only the grains located in the recesses remain adherent to the working surface of the tool. The hard-material grains can then be bonded to the main body by a physical and/or chemical bond. Thus, a distribution of the grains over the working surface of the tool that can be precisely defined in advance is ensured.
Method for reinforcing a grinding wheel, preferably for grinding gears. By means of at least one plastic that is poured in, both a ring lining a bore of the grinding wheel and a reinforcing layer are formed in the grinding wheel pores. The plastic that is poured in preferably consists of a potting compound, used in the raw state, made of a 2-component polyurethane system. In order to produce the reinforcement, the grinding wheel is set rotating, i.e., rotated, and, at the same time, a specific quantity of potting compound is poured into the bore. An increase in the explosion speed during operation of the grinding wheel is thereby made possible.
B24D 3/34 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
B24D 5/04 - Wheels in one piece with reinforcing means
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
A basket-like workpiece carrier for receiving a plurality of workpieces has a base element (4.1). A plurality of workpiece receptacles (3) for in each case one workpiece (2) are arranged thereon. Each workpiece receptacle comprises at least two positioning elements (6.1, 6.2) for positioning the workpiece. In order to adapt the workpiece receptacles to different workpieces, the distance between the positioning elements of each workpiece receptacle is variable. In order in this case to allow quick and easy adaptation, the workpiece carrier has a displacement element (5.1) which is displaceable horizontally with respect to the base element. The positioning elements interact with the base element and the displacement element such that a displacement of the displacement element in the longitudinal direction with respect to the base element brings about a simultaneous change in the distance between the positioning elements of several workpiece receptacles.
Disclosed is a method for dressing a single- or multi-thread grinding worm (34) in which a main rolling movement between the grinding worm and a gear-like dressing tool (90) is brought about. In order to create flank modifications on the grinding worm, an additional relative movement is superimposed on the main rolling movement. In addition, an auxiliary drive specifically designed for such a method, a correspondingly designed machine tool and a dressing tool for carrying out the method are disclosed.
A machine tool comprises a first component, for example a dressing spindle (3), and at least one second component, for example a dressing wheel (1), which is removably and/or movably arranged on the first component. The first component has a first antenna coil for a wireless signal transmission, and the second component has a second antenna coil. The two components together delimit a cavity which is completely surrounded by metal. The first antenna coil and the second antenna coil are arranged together in the cavity. This forms a metal-protected radio link (26.1) between the first antenna coil and the second antenna coil, which radio link is protected from harmful external influences.
The invention relates to a dressing tool, comprising a main body (2), the working surface (6) of which is covered with hard-material grains (7) distributed on the main body (2). According to the invention, recesses (8) for accommodating the hard-material grains (7) are created in the main body (2), wherein the recesses are then filled with an adhesive, the excess adhesive is removed across the main body (2), and thereafter the hard-material grains (7) are flung onto the main body (2), so that only the grains (7) located in the recesses (8) remain adherent to the working surface of the tool. Said hard-material grains can then be bonded to the main body by means of a physical and/or chemical bond. Thus, a distribution of the grains over the working surface of the tool that can be precisely defined in advance is ensured.
The invention relates to a grinding wheel (1), preferably for grinding gears. By means of at least one plastic that is poured in, both a ring (2a) lining the bore (2) and the reinforcing layer (2b) are formed in the grinding wheel pores. The plastic that is poured in preferably consists of a potting compound, used in the raw state, made of a 2-component polyurethane system. In order to produce the reinforcement, the grinding wheel (1) is set rotating and, at the same time, a specific quantity of potting compound is poured into the bore (2). An increase in the explosion speed during operation of the grinding wheel (1) is made possible thereby.
B24D 5/04 - Wheels in one piece with reinforcing means
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
B24D 3/34 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
76.
Method and device for producing a base body with hard material particles
In a method for producing a base body with hard material particles, an adhesive is first of all applied with a defined film thickness to the entire or parts of the working surface of the tool to be produced. Next, the hard material particles are applied to the regions of the working surface provided with the adhesive for lasting adhesion. Hard material particles are applied evenly by an apparatus and are then transferred to the working surface of the tool to be produced provided with the adhesive, on which they remain adhered before the adhesive has hardened. This method enables rapid coating of the working surface of the tool with a predeterminable uniform number of detached hard material particles per unit of area.
B24B 1/00 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
B24D 11/00 - Constructional features of flexible abrasive materialsSpecial features in the manufacture of such materials
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
The invention relates to a mill comprising a motor-driven grinding container (1) for receiving the material to be ground. The grinding container (1) is rotated by a rotary arm (8) of the drive about an axis of rotation (A) located outside the container, yet at the same time remains non-rotatable about the centre axis (B) thereof by a gear mechanism (9a, 9b, 9c). The grinding balls (12), which can move freely in the grinding container (1), are thus thrown back and forth from wall to wall without any appreciable share of the kinetic energy thereof being lost, for instance due to collisions with each other.
Full profile dressing roll (1) for dressing multi-start grinding worms for the generation grinding of small-module gears, comprising a groove-shaped axial section profile of the outer envelope surface (2), covered with hard material grains, and profile-cut hard-material profile combs (3) embedded in this envelope surface and having a multi-ribbed rack tooth system profile, the profile of which touches the outer envelope surface (2) of the dressing roll (1) only in sections of the axial section profile of the dressing roll (1) which do not participate in the generation of the grinding worm flanks. As a result, the profile sections, highly stressed during the dressing, at the crest and root of the profile grooves (4) are protected from high wear and premature grain loss and the service life of the dressing roll is effectively increased without the inhomogeneity of the flank surface of the dressing roll (1) being disturbed by the profile combs (3).
A method is used to round off the free bristle ends of a brush, the bristles (5) of which are made of thermoplastic polymer materials. The free bristle ends (4) are brought into contact with a plasma beam (2), wherein the exterior edge (4b) of the free bristle ends is dissolved thermally or in a similar manner. The plasma beam (2) that is directed onto the surface (4a) produces a total electric power of such magnitude on said end surfaces (4a) of the bristles that the exterior edges (4b) of the bristles are rounded off. In this way, the rounding off can be performed in a substantially faster and easier manner compared to traditional grinding wheels.
The invention concerns a device for the automatic loading of workpieces into a gear manufacturing machine, in particular a hard state finishing machine, by means of a swivel device arranged on the machine, where simultaneous with the machining process of a work piece blank (2) clamped on the work spindle (1) a finish machined work piece (2) on the transfer platform (8) located opposite the work spindle is de-oiled in a work piece loading lock, removed, and a fresh work piece blank fed in. The transfer platform (8) is designed as a centrifuge station.
B24B 49/00 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
81.
Grinding worm, profiling gear and process for the profiling of the grinding worm
A grinding worm for the continuous generation grinding of a work piece is provided with mutually overlapping rough grinding and finish grinding zones arranged along the worm's axis, the finished grinding zone being provided with a three-dimensionally modified flank geometry having a width related design.
09 - Scientific and electric apparatus and instruments
Goods & Services
Machines, including grinding machines; machine tools; tools
(machine parts), including precision tools and stone-cutting
tools, tool holders (machine parts); parts, spare parts and
accessories for the above-mentioned goods, not included in
other classes. Apparatus and instruments for scientific use; surveying and
measuring apparatus and instruments; measuring apparatus,
electric measuring apparatus, precision measuring apparatus.
(1) Machines, namely, grinding machines; machine tools, namely, precision tools and installation tools and parts and fittings for machine tools; holding devices for machine tools (parts of machines), namely, work piece holding fixtures, clamping devices, centering devices and conter supports; accessories for grinding machines, namely, oil cooling systems and filtration systems, work piece loading systems and work piece handling systems, oil mist extraction systems, all being additional aggregates used for operating the machines.
[ MACHINES, namely, ] GRINDING MACHINES, [ METAL-WORKING MACHINES; ]PRECISION MACHINES FOR METAL-WORKING; [ STONE WORKING MACHINES; ] PARTS FOR ALL OF THE AFOREMENTIONED MACHINES AND [ ACCESSORIES FOR ALL THE AFOREMENTIONED MACHINES, namely, OIL COOLERS, OIL FILTERS, OIL MIST EXTRACTORS, WORKPIECE HANDLERS; WORKPIECE LOADERS, AND WORKPIECE CENTERERS; MACHINE PARTS, namely, ] TOOL HOLDERS FOR METAL WORKING MACHINES; [ AND POWER-OPERATED TOOLS FOR METAL-WORKING ]
[ MACHINES, namely, ] GRINDING MACHINES, [ METAL-WORKING MACHINES; ]PRECISION MACHINES FOR METAL-WORKING; [ STONE WORKING MACHINES; ] PARTS FOR ALL OF THE AFOREMENTIONED MACHINES AND ACCESSORIES FOR ALL THE AFOREMENTIONED MACHINES, [, namely, OIL COOLERS, OIL FILTERS, OIL MIST EXTRACTORS, WORKPIECE HANDLERS; WORKPIECE LOADERS, AND WORKPIECE CENTERERS; MACHINE PARTS, namely, ] TOOL HOLDERS FOR METAL WORKING MACHINES; AND POWER-OPERATED TOOLS FOR METAL-WORKING
09 - Scientific and electric apparatus and instruments
Goods & Services
Tools for the machine industry, precision tools,
stone-dressers' tools; machine tools, parts and accessories
for machine tools. Tools for the machine industry, precision tools,
stone-dressers' tools. Measuring tools and instruments.
