发明名称 |
Numerically controlled curved surface machining unit |
摘要 |
Performing NURBS (non-uniform rational B-spline) interpolation machining is performed by reading cutter location (CL) data consisting of a tool control point vector and a tool axis vector on a workpiece coordinate system, converting the CL data into a position vector of three linear axes and a rotation angle on a machine coordinate system in accordance with the machine configuration of a simultaneous multiple-axis NC machine, calculating knot vectors of a NURBS curve with the most suitable chord length on the basis of a position vector of the three linear axes and a rotation angle, calculating a NURBS curve of the three linear axes and one rotary axis using the knot vectors, converting the NURBS curve into NURBS interpolation NC data, converting the feed rate on a workpiece coordinate system into the feed rate per minute on a machine coordinate system, and transmitting NC data to a NC machine.
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申请公布号 |
US6675061(B2) |
申请公布日期 |
2004.01.06 |
申请号 |
US20030437279 |
申请日期 |
2003.05.14 |
申请人 |
HITACHI, LTD.;HITACHI SOFTWARE ENGINEERING CO., LTD. |
发明人 |
HIRAI JUNICHI;ARAI HIROSHI;HARIHARA TAMOTSU;CHIBA OSAMU;TAKAHASHI MASAAKI;KANAMARU NOBUHISA |
分类号 |
G05B19/4103;(IPC1-7):G06F19/00 |
主分类号 |
G05B19/4103 |
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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