In-process compensation of machining operation and machine arrangement

摘要

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.

主权项

1. 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: providing a cutting tool holder for securing the cutting tool during operation, providing a motion device configured to physically drive the relative rotational movement and relative movement between the workpiece and the cutting tool; generating a control signal representative of magnitude of a contact force exerted on the cutting tool only in a normal direction in relation to the machining surface, the control signal being generated in response to output from a sensor configured to measure the contact force, determining a compensation parameter value based on the control signal, and compensating the machining operation based on the compensation parameter value, wherein output from the sensor is continuously monitored such that compensations in the range of zero point five microns to ten microns can be accomplished at a rate of up to fifteen thousand hertz.