Importance

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Abstract

A grinding wheel with a working surface having a complex profile is subjected to a path-controlled dressing operation by an apparatus which moves in the direction of the Z-axis of the machine while the grinding wheel moves in the direction of the X-axis. When necessary in view of configuration of the momentarily dressed portion of the working surface, the grinding wheel is turned about the B-axis of the machine, and such axis is remote from the point of contact between the dressing tool and the working surface and is normal to the Z- and X-axes. The controls of the grinding machine cause the dressing tool and the grinding wheel to perform additional movements in the direction of the Z- and X-axes so as to compensate for those deviations from the preselected movement which are due to turning of the grinding wheel about the B-axis. The controls include an interpolator which modifies signals from the numerical controls of the machine and transmits modified signals to regulators for motors which initiate movements of the dressing tool in the direction of the Z-axis, movements of the grinding wheel in the direction of the X-axis, and (when necessary) turning of the grinding wheel about the B-axis.

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First Claim