| 摘要 |
PROBLEM TO BE SOLVED: To reduce the replacement time of a tool by providing the partial tools engaged with each other with a connecting part enabling the automatic replacement of the tool. SOLUTION: A driving device 33 is preferably connected with the control part of a tightening device 31. In this manner, when the hollow shaft 23 of a tool head 3 is released, an inserting tube 17 is also released by a connecting element 27. Thus, the automatic replacement of a tool 1 in which both the tool head 3 and the inside tool 5 are automatically separated and become replaceable can be enabled. After the tool 1 is taken out from the tightening device 31, only the tool head can be replaced. For instance, the tool head 3 can be replaced with that having a different outside contour. |
