GRINDING MACHINE

摘要

A grinding machine includes a manual rotating handle provided with a rotation detector that outputs a rotation detection signal so that the position of a grinding wheel with respect to a workpiece can be relatively moved in accordance with the rotation detection signal. The grinding machine further includes a grinding wheel, a moving apparatus that moves the position of the grinding wheel with respect to a workpiece W, a proximity detector that outputs a proximity detection signal corresponding to a relative position or a relative distance between the workpiece and the grinding wheel, a manual rotating handle provided with a rotation detector, and a control apparatus that controls the moving apparatus based on the rotation detection signal. The manual rotating handle is provided with a rotational-torque varying apparatus. The control apparatus controls the rotational-torque varying apparatus based on the proximity detection signal.

主权项

1. A grinding machine comprising:
a grinding wheel that grinds a workpiece; a moving apparatus that relatively moves a position of the grinding wheel with respect to the workpiece; a proximity detector that outputs a proximity detection signal corresponding to a distance between the workpiece and the grinding wheel; a manual rotating handle provided with a rotation detector that outputs a rotation detection signal that is an electric signal corresponding to an amount of rotation resulting from an operator's manual operation; and a control apparatus that receives the rotation detection signal to control the moving apparatus by an amount corresponding to the rotation detection signal, wherein the manual rotating handle is provided with a rotational-torque varying apparatus that varies a rotational torque that is a torque needed to rotate the manual rotating handle, and the control apparatus receives the proximity detection signal to control the rotational-torque varying apparatus in accordance with a state of proximity between the workpiece and the grinding wheel based on the proximity detection signal.