| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To relatively move a tool rest and a workpiece in a short time along a short moving path having no possibility of interference when a tool used for machining is changed over. <P>SOLUTION: A tool feed drive unit 68 is provided to relatively move the tool rest and workpiece on a first shaft and a second shaft intersecting the first shaft and also to relatively revolve the workpiece along the periphery of the tool rest by overlapping the relative movement of the tool rest and workpiece in both shaft directions. A CPU 56, a RAM 58 and the like set a moving boundary circular arc relatively movable without causing the interference of the workpiece with the tool rest in a portion where the first shaft overlaps with the second shaft. The CPU 56, RAM 58 and the like control the movement of the tool feed drive unit 68 so that the workpiece is relatively moved from the first shaft to the second shaft through the outer moving locus of the moving boundary circular arc along the periphery of the tool rest. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
