Means and method for resetting a cylindrical grinding machine

Claim 1

In a method of resetting a cylindrical grinding machine comprising: at least one grinding wheel (1), said at least one grinding wheel being rotatable about an axis A, said at least one grinding wheel being translatable along an axis X, said axis X being perpendicular to said axis A; a turning slide (2), said turning slide being translatable along an axis Z; a rotary table (3) rotatably disposed on said turning slide (2), said rotary table being rotatable around an axis B, said axis B being perpendicular to said axis Z, said rotary table (3) being designed and equipped to receive a workpiece (10) which is to be ground, said workpiece being held between two turning centers (4,5) defining an axis C; and a numerical control computer means (a) for effecting relative movement between said at least one grinding wheel, said turning slide and said rotary table; said method comprising: grinding a workpiece (10) along a grinding line (6), with rotation of said rotary table (3) about said axis B until said axis of said workpiece (10) is parallel to said axis Z of said turning slide (2) as determined by the production of a calibration cylinder having predetermined dimensional requirements; wherein the improvement comprises inputting the thus defined rotational position of the C axis with respect to the B axis into said numerical control computer means for resetting said axis C parallel to said axis Z; and, based on the position of the grinding wheel on said X-axis and the diameter of the calibration cylinder, calculating a distance (S) between the grinding line (6) and the axis C and inputting said distance (S) to the computer for resetting the final position of said grinding wheel on said axis X during grinding.