| 摘要 |
A device for adjusting the position of a grinding wheel relative to a workpiece in order to automatically compensate for the change in diameter in the grinding wheel during the trimming thereof by a trimming tool includes a gear connection between a trim spindle which is engageable with a nut on a trim carriage for shifting a trimming tool relative to the grinding wheel and to an adjusting spindle which is threaded into an adjusting nut carried on the grinding wheel carriage. The construction includes braking means for holding the gearing and the associated adjusting nut during the times at which the adjusting spindle is rotated for shifting the carriage, for example, by actuation of a hand wheel. The brake may be released during the time at which the trim spindle is rotated to shift the trim carriage in order to dress the surface of the grinding wheel and during this time the adjusting spindle will rotate relative to the adjusting nut so that the position of the adjusting nut with the carriage will be shifted in respect to the spindle by an amount corresponding to the movement of the dressing tool during the dressing operation. |
