| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vacuum suction device that can readily suction a large workpiece material having a large warp, and to secure a holding force endurable with machining stress. <P>SOLUTION: The vacuum suction device includes: a first engagement member 15 configured to advance and retreat relative to a workpiece 30 and engaged with a surface of the workpiece by decompression or adhesion; and a second engagement member 17 formed in such a shape that encircles the first engagement member and engaged with an outer circumference of the part engaged by the first engagement member in the workpiece by decompression. <P>COPYRIGHT: (C)2012,JPO&INPIT |
