In-process compensation of machining operation and machine arrangement
AssigneeAktiebolaget Skf
InventorsJacek Kaminski, Stefan Högnäs, Oscar A. Neguembor
Life of this patent
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Abstract
The present invention relates to a method for performing in-process compensating a machining operation on a workpiece, wherein the compensation process includes generating a control signal representative of magnitude of a contact force exerted on a cutting tool in a normal direction in relation to a machining surface of the workpiece, determining a compensation parameter value based on the control signal, and compensating the machining operation based on the compensation parameter value. The present invention also relates to corresponding machine arrangement for performing a machining operation on a workpiece, such as a hard turning process.
Claims16
A method for compensating a machining operation on a workpiece, the method comprising:
- performing a machining operation which physically removes material from the workpiece by subjecting a machining surface of the workpiece with a cutting tool, and by providing a relative rotational movement and a relative movement between the workpiece and the cutting tool, wherein
- the method further comprises in-process compensation of the machining operation, the in-process compensation comprising:
- generating a control signal representative of magnitude of a contact force exerted on the cutting tool in a normal direction in relation to the machining surface,
- determining a compensation parameter value based on the control signal, and
- compensating the machining operation based on the compensation parameter value.
A computer readable medium embodying a computer program product for compensating a machining operation on a workpiece, the computer program product comprising code configured to, when executed by a processor:
- perform a machining operation which physically removes material from the workpiece by subjecting a machining surface of the workpiece with a cutting tool, and by providing a relative rotational movement and a relative movement between the workpiece and the cutting tool, and
- perform in-process compensation of the machining operation, wherein the compensation comprises:
- generate a control signal representative of magnitude of a contact force exerted on the cutting tool in a normal direction in relation to the machining surface,
- determine a compensation parameter value based on the control signal, and
- compensate for the machining operation based on the compensation parameter value.
A machine arrangement for a machining operation of a workpiece, the machining operation providing physical removal of material from the workpiece, the machine arrangement comprising:
- a workpiece holder arranged to secure and rotate the workpiece,
- a cutting tool attached to a tool holder, and
- a motion device for the tool holder,
- wherein the motion device is arranged to place the cutting tool in contact with a machining surface of the workpiece, and to move the cutting tool in relation to the workpiece according to machining operation parameters, wherein the arrangement further comprises:
- a sensor arranged to generate a control signal representative of magnitude of a contact force exerted on the cutting tool in a normal direction in relation to the machining surface, and
- a compensation control unit operatively connected to the sensor and arranged to determining a compensation parameter based on the control signal,
- wherein compensation control unit is arranged to provide in-process compensation of the machining operation based on the compensation parameter.
A machine arrangement for machining operation of a workpiece, the machining operation providing physical removal of material from the workpiece, the machine arrangement comprising:
- a workpiece holder arranged to secure and rotate the workpiece during machining operation,
- a cutting tool attached to a tool holder, and
- a motion device supporting the tool holder,
- wherein the motion device is arranged to provide the cutting tool in contact with a machining surface of the workpiece, and to move the cutting tool in relation to the workpiece according to machining operation parameters, wherein the arrangement further comprises:
- an actuator (28) supporting the tool holder, the actuator is arranged between the motion device and the tool holder,
- wherein the actuator is arranged to adjust the position of the tool holder in relation to the motion device.
Dependencies are inferred from the claim text.