JPS6418006A - Measuring apparatus for grinder - Google Patents

Abstract

PURPOSE:To measure the amount of grinding efficiently and at a high accuracy during grinding work without removing a work, by automatically performing a measurement each time approximate center position of the work corresponds to a measuring element during the grinding work while a clean air is blown to the measuring element and a measuring surface of the work to remove ground dust from the surface thereof. CONSTITUTION:The surface grinding of a work W is performed while Y and X tables 4 and 6 are made to reciprocate perpendicular to a rotating shaft of a rotary grinding wheel 8 being moved across the width perpendicular thereto. As a width-wise approximate center position of the work W corresponds to a measuring element 23, a first detector 521 starts and an air blowing means 41 is operated to blow an clean air against the measuring element 23 and a measuring surface of the work W. Then, as one end face of the work W in the direction of reciprocation thereof corresponds to the measuring element 23, a second detector 522 is operated and with the driving of a lift means 31, the measuring element 23 abuts on the measuring surface of the work W. Moreover, as the work W moves in the direction of reciprocation thereof, a third detector 523 is actuated to obtain the amount of grinding by a measuring means 81 according to the output of a signal detector 21.