Abstract

There is provided a measuring head comprising a support frame, an arm extending along a trajectory at least between a first end and a second end and including at least one probe arranged at said first end and suitable for contacting an external body, constraint means configured to loosely bind said frame and said arm in such a manner that said arm is rotatable with respect to said frame about a rotation axis, transversal to said trajectory proportional to displacements defined by the interaction of said probe with said body, and a differential capacitive sensor comprising an emitter integral with said frame and disposed in proximity of said second end, a receiver integral with said second end and a computer operatively connected to the receiver and configured to determine position parameters of the receiver with respect to the emitter from a predetermined reference position value so as to determine the displacements of the probe.

IPC Classes  ?

• G01D 5/24 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance

Abstract

A system (1) for measuring rotational imbalances for a rotating workpiece (10) balancing machine is provided, wherein the workpiece (10) defines a rotation and a force (F) determined by imbalances in at least one plane (1a) during rotation, and the system (1) comprises a fixed support (2), a movable support (3) connected to the fixed support (2), configured to allow at least part of the workpiece (10) to be accommodated, and configured to allow micro-movements relative to the fixed support (2) along the plane (1a) proportional to the force (F), sensing means (4) operatively connected to the fixed support (2) and to the movable support (3) and suitable for sensing forces (F), and clamping means (5) loosely constraining to the movable support (3) and to the fixed support (2) in order to permit said relative micro-movements between said movable support (3) and said fixed support (2) exclusively along a predetermined trajectory (5a) lying in said plane (1a), along said predetermined trajectory (5a) and including opposing means (50) realizing a moment opposite to the moment generated by said workpiece (10) when placed on said movable support (3).

IPC Classes  ?

• G01M 1/22 - Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables

Abstract

A measuring device including a support base, a movable arm, having an extension prevailing along a longitudinal direction and rotatable with respect to the support base along a rotation axis skewed with respect to the longitudinal direction, a probe constrained to the movable arm, apparatus for measuring oscillation of the movable arm, first magnet including at least one first magnetic element constrained to the movable arm, at least one second magnetic element constrained to the support base and not oscillating with the movable arm, the first magnetic element and the second magnetic element reciprocally movable along a movement trajectory having prevailing extension along the longitudinal direction, the first magnetic element and the second magnetic element exerting magnetic force on each other in at least one position along the movement trajectory.

IPC Classes  ?

• G01B 7/12 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
• G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques

Abstract

A balancing device for each rotating piece, the rotating piece defining an axis of rotation, the balancing device including: a fixed portion, a mobile portion defining a central axis. The balancing device constrained to the rotating piece so that the central axis substantially coincides with the rotation axis. The balancing device including at least one eccentric mass, rotatable around the central axis and not balanced with respect to the central axis. The balancing device further including apparatus for movement of the eccentric masses, including a magnetic brake and being able to rotate the eccentric masses, with respect to the rotating piece around the central axis.

IPC Classes  ?

• B24B 41/04 - HeadstocksWorking-spindlesFeatures relating thereto
• 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
• G01M 1/36 - Compensating imbalance by adjusting position of masses built-in the body to be tested

Abstract

A balancing device is provided, including acquisition device adapted to detect vibratory stresses generated by the rotating body during rotation, in which the acquisition device are configured to allow the detection of vibratory stresses along at least two mutually non intersecting acquisition directions.

IPC Classes  ?

• G01M 1/22 - Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables

Abstract

Movement device for moving an object along a movement surface, including: a percussion mass and suspension device, connecting the percussion mass to object, moving to move the percussion mass repeatedly along a closed path, a head, constrained to the object, to interfere with the closed path, the percussion mass interfering with the head along an advance line and direction, connection device for connecting the object to the movement surface to create friction between the object and movement surface. The percussion mass interfering with the head causes a reaction force exceeding the friction, capable of moving the object relative to the movement surface. The percussion mass not interfering with the head along the closed path does not cause reaction forces exceeding the friction, capable of moving the object relative to the movement surface.

IPC Classes  ?

• F16F 15/32 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
• G01M 1/30 - Compensating imbalance
• F16F 15/36 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically
• G01M 1/36 - Compensating imbalance by adjusting position of masses built-in the body to be tested

Goods & Services

Trueing machines; Machines for grinding [electric]; Chain grinding machines; Precision grinding machines; Involute grinding machines; Internal grinding machines; Grinding machines [for metalworking]; Bench grinders [machines]; Grinding machines with spiral bevel gears; Pavement cutting power grinders; Ground surface finishing and compacting machines; Grinding machines for refacing the edges of tools; Grinding machines for the treatment of ceramics and metal; Milling machines and grinding machines for the treatment of ceramics and metal. Sensors and detectors; Vibration sensors; Vibration sensors for installation in wind mill housings; Manual rectifiers; Alternator rectifiers; Air temperature sensors; Remote temperature sensors; Coolant-temperature sensors; Thermal sensors [thermostats]. Temperature sensors [thermostatic valves] for central heating radiators; Temperature responsive control apparatus [thermostatic valves] for central heating radiators.

Abstract

Provided is a feeler for workpieces being machined, including a rocking arm configured to feel the workpiece, a first sensor configured to measure the position of the rocking arm and at least one additional sensor operatively connected to the rocking arm and configured to detect external perturbations acting on the feeler.

IPC Classes  ?

• G01B 3/22 - Feeler-pin gauges, e.g. dial gauges
• B24B 49/04 - 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 according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
• G01B 7/12 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
• G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques

Abstract

Provided is a balancing device for a rotating body defining a rotation axis and including a plurality of balancing heads aligned along the rotation axis, each balancing head including, balancing masses configured to be moved at least along a movement circumference to cancel out the unbalance of the rotating body; at least one motor configured to move said balancing masses independently of each other, the balancing masses belonging to different balancing heads being reciprocally distanced along the rotation axis; and unbalance detectors including a plurality of vibration detectors configured to measure the vibrations caused by the unbalances of the rotating body.

IPC Classes  ?

• F16F 15/14 - Suppression of vibrations in rotating systems by making use of members moving with the system using freely-swinging masses rotating with the system
• B24D 5/16 - BushingsMountings
• G01M 1/36 - Compensating imbalance by adjusting position of masses built-in the body to be tested
• F16F 15/36 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically

Abstract

Provided is a balancing device for a rotating body defining an axis of rotation, including a plurality of balancing heads aligned along the axis of rotation, each balancing head including: balancing masses configured to be moved at least along a circumference of movement so as to cancel the unbalance of the rotating body; at least one motor configured to move the balancing masses independently, the balancing masses part of different balancing heads being mutually spaced along the axis of rotation; unbalance detecting means including a plurality of vibration detectors configured to measure the vibrations caused by the unbalance of the rotating body.

IPC Classes  ?

• B24B 41/04 - HeadstocksWorking-spindlesFeatures relating thereto
• G01M 1/22 - Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables
• G01M 1/02 - Details of balancing machines or devices
• G01M 1/36 - Compensating imbalance by adjusting position of masses built-in the body to be tested
• G01M 1/32 - Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights

Goods & Services

Workpiece indexing devices [parts of machines]; Balances for power operated tools; Electric motors; Electric driving motors for machines; Motors, electric, other than for land vehicles; Electric motors, and their parts, not for land vehicles. Balance installations; Wheel balancing apparatus; Tire balancing units for land vehicles; Dual amplifier balancers; Measuring instruments; Measuring transducers; Transducers; Measuring instruments; Vibration gauges; Electronic measurement sensors; Measuring, counting, alignment and calibrating instruments; Measuring, detecting and monitoring instruments, indicators and controllers; Distance and dimension measuring instruments; Measuring devices, electric; Balancing apparatus; Tire balancing machines for land vehicles; Balancing systems for grinding machines. Balance weights for vehicle wheels; Motors, electric, for land vehicles.

Goods & Services

Workpiece indexing devices [parts of machines]; Balances for power operated tools; Electric motors; Electric driving motors for machines; Motors, electric, other than for land vehicles; Electric motors, and their parts, not for land vehicles. Balance installations; Dual amplifier balancers; Measuring instruments; Measuring transducers; Measuring instruments; Vibration gauges; Electronic measurement sensors; Measuring, counting, alignment and calibrating instruments; Distance and dimension measuring instruments; Measuring, detecting and monitoring instruments, indicators and controllers; Measuring devices, electric; Balancing apparatus; Tire balancing machines for land vehicles; Wheel balancing apparatus; Tire balancing units for land vehicles. Balance weights for vehicle wheels; Balance weights for vehicle wheels; Motors, electric, for land vehicles.

Abstract

A balancing device (1) for a rotating body (10) defining an axis of rotation (10a), and comprising: a plurality of balancing heads (30) aligned along the axis of rotation (10a), each balancing head comprising: balancing masses (31) suitable to be moved at least along a circumference of movement so as to cancel the unbalance of the rotating body (10); at least one motor (32) suitable to move the balancing masses (31) independently, the balancing masses (31) part of different balancing heads (30) being mutually spaced along the axis of rotation (10a); unbalance detecting means (5) including a plurality of vibration detectors (5a) suitable to measure the vibrations caused by the unbalance of the rotating body (10).

IPC Classes  ?

• G01M 1/36 - Compensating imbalance by adjusting position of masses built-in the body to be tested
• B24B 41/04 - HeadstocksWorking-spindlesFeatures relating thereto

Abstract

Provided is a balancing device for a rotating body including at least one unbalance detector to measure the unbalance of the rotating body; two balancing masses to be handled along a handling circumference so as to cancel the unbalance; a position sensor to detect the mutual position of the balancing masses; and a motor to independently handle each of the balancing masses as a function of their mutual position and unbalance.

IPC Classes  ?

• B24B 41/04 - HeadstocksWorking-spindlesFeatures relating thereto
• G01M 1/32 - Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights
• G01M 1/36 - Compensating imbalance by adjusting position of masses built-in the body to be tested
• G01M 1/02 - Details of balancing machines or devices
• G01M 1/22 - Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables

Abstract

Provided is a measuring head (1) for a feeler (2) of workpieces (3) being machined, including a fixed portion (10) to be secured to an outer fixed support, a movable portion (11) including a constraint element (14) for a feeler arm (4), a rotational hinge (12) adapted to connect the fixed portion (10) to the movable portion (11), wherein the fixed portion (10), movable portion (11) and pivot bearing (12) are of one piece construction.

IPC Classes  ?

• G01B 5/08 - Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
• B24B 49/04 - 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 according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
• G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques
• G01B 7/12 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters