A machine tool is provided with two vertically oriented tool spindles that are arranged to hold tools and that are movable vertically in a first direction and horizontally in a second direction orthogonal to the first direction. Furthermore, the machine tool is provided with two workpiece support devices for clamping workpieces in place. At least one of the two workpiece support devices is movable horizontally in a third direction orthogonal to the first and the second direction. The two tool spindles and the two workpiece support devices are mounted on a common machine frame with a common working space, wherein the two tool spindles are movable parallel to one another in the second direction. The two tool spindles are facing one another.
A machine tool is provided with a vertically aligned tool spindle, which is equipped for accommodating tools and which is movable in a vertical direction and in a first horizontal direction. The machine tool further comprises at least one jig for clamping workpieces to be machined. The at least one jig is movable in a second horizontal direction. The tool spindle and the at least one jig are arranged on a common machine frame. There is also provided a workpiece transport device, which is arranged on the machine frame, and which is adapted to perform at least one of introducing unmachined workpieces into the at least one jig and removing machined workpieces from the at least one jig. There is also provided a corresponding method of machining workpieces.
B23Q 39/02 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
B23Q 1/01 - Frames, beds, pillars or like membersArrangement of ways
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
B23Q 1/26 - 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
B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools
A machine tool is provided with two vertically oriented tool spindles that are arranged to hold tools and that are movable vertically in a first direction and horizontally in a second direction orthogonal to the first direction. Furthermore, the machine tool is provided with two workpiece support devices for clamping workpieces in place. At least one of the two workpiece support devices is movable horizontally in a third direction orthogonal to the first and the second direction. The two tool spindles and the two workpiece support devices are mounted on a common machine frame with a common working space, wherein the two tool spindles are movable parallel to one another in the second direction. The two tool spindles are facing one another.
A machine tool has a clamping device for clamping in workpieces to be machined, a work spindle which is movable relative to the clamping device, a tool magazine wherein tools for machining the workpieces are held available, the tools being selectively clamped into the work spindle, and a spindle gripper to be selectively clamped into the work spindle and being self-holding in its gripping position, said spindle gripper being held available in the tool magazine and being movable between a transfer position to the work spindle and an unloading station in which the spindle gripper releases a work piece remnant received from the clamping device.
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
B23Q 3/155 - Arrangements for automatic insertion or removal of tools
B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools
B23B 1/00 - Methods for turning or working essentially requiring the use of turning-machinesUse of auxiliary equipment in connection with such methods
B23B 3/22 - Turning-machines or devices with rotary tool heads
B23B 3/06 - Turning-machines or devices characterised only by the special arrangement of constructional units
B23B 13/02 - Arrangements for automatically conveying, chucking or guiding stock for turning machines for turning-machines with a single working-spindle
B23C 1/12 - Milling machines not designed for particular work or special operations with spindle adjustable to different angles, e.g. either horizontally or vertically
The invention relates to a machine tool (10) which is provided with two vertically aligned tool spindles (22, 25) which are equipped to receive tools (23, 26) and which can be moved vertically in a first direction (33) and horizontally in a second direction (34) that is orthogonal to the first direction (33). The machine tool (10) is additionally provided with two devices (29, 31) for clamping workpieces (27, 28) to be machined. At least one of the devices (29, 31) can be moved horizontally in a third direction (35) that is orthogonal to the first and the second direction (33, 34). The two tool spindles (22, 25) and the two devices (29, 31) are mounted on a common machine frame (11) with a common working chamber (32), wherein the two tool spindles (22, 25) can be moved parallel to each other in the second direction (34) and face each other.
B23Q 3/157 - Arrangements for automatic insertion or removal of tools of rotary tools
B23Q 39/04 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being arranged to operate simultaneously at different stations, e.g. with an annular work-table moved in steps
The invention relates to a machine, especially a machine tool for machining workpieces, comprising at least one ball screw spindle (67) that is driven by a motor (64) comprising a motor hub (65) and on which a spindle nut (68) sits, said spindle nut being connected to a structural component (63) of the machine tool (10) in such a way that when the ball screw spindle (67) is rotated (71) by means of the motor (64), the structural component (63) is moved along (72) the ball screw spindle (67), the ball screw spindle (67) comprising a rotational axis (70). A passive absorption device (74; 77) is provided for the ball screw spindle (67), that counteracts an undesired movement of the ball screw spindle (67) in relation to the motor hub (65).
B23Q 5/40 - Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
B66F 7/14 - Lifting frames, e.g. for lifting vehiclesPlatform lifts with platforms supported directly by jacks by mechanical jacks screw-operated
B66F 17/00 - Safety devices, e.g. for limiting or indicating lifting force
F16D 47/02 - Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the following sets of groups: of which at least one is a coupling
F16H 25/24 - Elements essential to such mechanisms, e.g. screws, nuts
7.
METHOD FOR REARRANGING TOOLS IN THE TOOL MAGAZINE OF A MACHINE TOOL
On a machine tool which has a tool spindle (26) for mounting a machining tool (1-7) and a tool magazine (50) with a multiplicity of magazine locations (a - z), which are loaded with a multiplicity of machining tools (1 - 10) in a spatial sequence in relation to one another, the machining tools (1 - 10) are rearranged in conjunction with the machining of a specific workpiece in such a way that the spatial sequence (a - z) corresponds at least largely to the time sequence (1 - 10). In this case, the following steps are carried out: a) the tool spindle (26) deposits the previously used machining tool (1) in the first magazine location (a), b) the tool spindle (26) removes the machining tool (5) from the second magazine location (b) and deposits it in a machine location (d) serving as an interim store, c) the tool spindle (26) removes the machining tool (2) intended in the time sequence to be the next for machining from its old magazine location (y) and carries out a machining of the workpiece (42) with it, d) the tool spindle (26) deposits the machining tool (2) in the machine location (b), and e) the tool spindle (26) removes the machining tool (6) from the third machine location (c).
A machine tool for the cutting machining of workpieces has at least one tool spindle with a spindle receptacle for mounting a machining tool and at least one chain magazine (50), which has a multiplicity of magazine locations for holding a multiplicity of machining tools. The chain magazine (50) has at least one movable chain (52), which is arranged such that it can be moved back and forth on a closed chain running path (56), and on which the magazine locations are formed. The chain running path (56) has a first part (69), which is stationary, and a second part (70), which is adjustable in relation to the stationary first part (69), a tensioning unit (77, 81) being arranged between the first part (69) and the second part (70) of the chain running path (56) for adjusting the second part (70) in an automated manner with respect to the first part (69) in order to tension the chain (52)
The invention relates to a method for simultaneously machining at least two workpieces (22, 23) using a machine tool (10) for machining, comprising a workpiece clamping fixture for clamping workpieces (22, 23) and at least two tool spindles (15, 16) displaceable in three orthogonal machine axes (x, y, z) synchronously with each other and relative to the workpiece clamping fixture, and disposed parallel next to each other along a first (x) of the machine axes at a center distance (26) from each other, comprising the steps of: a) clamping two workpieces (22, 23) on a workpiece table (14) that can pivot back and forth at least 180° about a pivot axis (24) extending perpendicular to the first machine axis (x), such that the longitudinal axes of the workpieces (22, 23) extend parallel to each other and perpendicular or at an angle to the first machine axis (x) and perpendicular to the pivot axis (24), b) machining the two workpieces (22, 23) at the same time on the same contour using machining tools (17, 18) chucked in the two tool spindles (15, 16), wherein the first workpiece (22) is machined using the first tool spindle (15) and the second workpiece (23) is machined using the second tool spindle (16), c) pivoting the workpiece table (14) by 180°, and d) machining first the one and then the other workpiece (15, 16) using a single spindle, wherein the first workpiece (22) is machined using the first tool spindle (15) and the second workpiece (23) is machined using the second tool spindle (16).
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
B23Q 39/04 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being arranged to operate simultaneously at different stations, e.g. with an annular work-table moved in steps
B23Q 39/02 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
10.
Machine tool and method for cutting machining of workpieces
A machine tool for the cutting machining of workpieces, in particular of metallic workpieces, has a first and a second tool spindle for receiving a first and a second machining tool, and it has a first and a second workpiece carrier for receiving a first workpiece and a second workpiece. The first tool spindle is movable relative to the first and to the second workpiece carrier in order to selectively machine the first or the second workpiece. Moreover, the first workpiece are movable relative to one another in order to transfer a workpiece from one workpiece carrier to the other workpiece carrier. The second tool spindle is movable relative to the second workpiece carrier in order to machine the second workpiece.
A machine tool for cutting machining of work pieces has a tool spindle and a work piece spindle. The work piece spindle is a hollow spindle having a through hole extending through the spindle and a holding mechanism for holding a work piece at one end. The work piece held in the holding mechanism can be machined through the through hole by means of a machining tool held in the tool spindle.
patents
