| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-speed automatic centering method for making the working center (axial center of a spindle shaft) of a grinding machine accurately coincide with the center of an eccentric part of an eccentric workpiece having the one eccentric part. <P>SOLUTION: A high-speed automatic centering device is provided with an arithmetic device for calculating a phase rotation angle θ that satisfies (sinθ=d/e), when a vertical deviation amount between the center position C<SB POS="POST">2</SB>of the eccentric part B of the eccentric workpiece W<SB POS="POST">1</SB>measured by a measuring device D and the working center C<SB POS="POST">0</SB>of the grinding machine is denoted by d, and the phase rotation angle of rotating the shaft part A of the eccentric workpiece W<SB POS="POST">1</SB>for making the center of the eccentric part B coincide with the working center C<SB POS="POST">0</SB>is denoted by θ. A workpiece rotation device is configured in such a way that a clamping tool holding the shaft part A of the eccentric workpiece W<SB POS="POST">1</SB>is rotated by a servo motor having an encoder, and centering work is performed by rotating at a stroke the shaft part A of the eccentric workpiece W<SB POS="POST">1</SB>by the workpiece rotation device by the phase rotation angle θ indexed by the encoder. <P>COPYRIGHT: (C)2013,JPO&INPIT |
