The process serves to grind cams (11) of a camshaft (10) with the use of a numerically controlled camshaft-grinding machine (1) in which the camshaft (10) is rotatable in a work-holding fixture (12) about a first axis (14) coinciding with its longitudinal axis, and a grinding carriage (20) with a grinding wheel (21) can be fed in radially towards the camshaft (10) along a second axis (23). The rotation of the camshaft (10) about the first axis (14) can be set as a function of the displacement of the grinding carriage (20) along the second axis (23). First of all a sequence of control commands is prepared for setting the first and the second axis (14, 23) as a function of the predetermined shape of the cam (11). The work-holding fixture (12) is then rotated about the first axis (14), and the grinding carriage (20) is displaced along the second axis (23) in accordance with the control commands. In the course of this, no camshaft (10) is clamped in position in the work-holding fixture (12). The rotary angles assumed by the work-holding fixture (12) are now detected by means of an angle sensor (30), and the displacement distances traversed by the grinding carriage (20) are detected by means of a length sensor (31). The difference between the detected measured values of rotary angle and displacement distance and the control commands is now formed. The control commands are then modified as a function of this difference. The camshaft (10) is now clamped in position in the work-holding fixture (12) and the cams (11) are ground with the modified control commands. IMAGE
展开▼
