Patent ID: 6301520
Filing Date: 2001-10-09
Classification: B23Q,G05B,Y10T

Abstract:
A spindle end positional deviation correction system for machine tools including a spindle and a spindle holding member for holding the spindle to be rotatable relative thereto, the system comprising:a flange element provided on the spindle in a vicinity of an end of the spindle;a deviation detector, secured to the spindle holding member in opposite to a surface of the flange element in an axial direction of the spindle, for detecting in a non-contact manner a deviation of a gap in the axial direction between the deviation detector and the surface of the flange element;calculation means for calculating a correction value of an axial position of the spindle in accordance with the deviation of the gap detected by the deviation detector; andcorrection means for correcting a command responsible for the axial position of the spindle in accordance with the correction value calculated by the calculation means to compensate for an axial position of the end of the spindle.