Method for in-process-measurement of radius error of crankshaft during pin chasing process in pin chasing grinder, involves calculating radius error from deflection of tactile device for number of angle steps

摘要

The method involves processing a workpiece (14) under rotation around a rotational axis, and setting a measurement device (16) on the workpiece so that the device has contact with the workpiece in two contact points (18, 20). A tactile device (22) is brought into contact with the workpiece, and deflection of the tactile device at different rotational angles of the rotational axis is measured and stored. The rotational angles are detected at equidistant angle steps, and a radius error is calculated from the deflection of the tactile device for a number of angle steps. An independent claim is also included for a machining tool comprising a rotary device.