发明名称 |
METHOD AND APPARATUS FOR MACHINING A NON-CIRCULAR WORKPIECE |
摘要 |
An apparatus for machining a non-circular workpiece such as a piston wherein a tool is moved back and forth against the workpiece in accordance with profile data defining a desired final shape of the workpiece while the workpiece is rotated at a predetermined speed. The tool is moved by a composite movement of a linear motor driven in accordance with high frequency command values, and a piezoelectric actuator driven in accordance with high frequency command values. A numerical controller of the apparatus calculates the low frequency command values using a first Fourier series and the high frequency command values using a second Fourier series. Coefficients of the first and second Fourier series are determined using least square method in such a way that errors contained in the low and high frequency command values becomes within a predetermined limit. <IMAGE> |
申请公布号 |
EP0476678(A3) |
申请公布日期 |
1994.09.21 |
申请号 |
EP19910115996 |
申请日期 |
1991.09.19 |
申请人 |
TOYODA KOKI KABUSHIKI KAISHA |
发明人 |
KAZUHIKO, SUGITA;NORIO, SAKAKIBARA;NOBUMITSU, HORI;YOICHI, YAMAKAWA;TOSHIHIRO, TAKAHASHI |
分类号 |
B23B5/24;G05B19/18;(IPC1-7):G05B19/18 |
主分类号 |
B23B5/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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