| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an erroneous use of first and second tools. <P>SOLUTION: An operation unit 100 includes: the first and the second tools 121, 122; first and second shutter members 131, 132; first and second detectors 141, 142; and a tool manager 150 that controls to make the first tool 121 operable only when the first detector 141 detects that the first shutter member 131 covers a work 20 and also to make the second tool 122 operable only when the second detector 142 detects that the second shutter member 132 covers the work 20. <P>COPYRIGHT: (C)2012,JPO&INPIT |
