| 摘要 |
PURPOSE:To smoothly tighten and loosen a tool, by screwing a stepped bolt into a diagonally provided clamping hole with a stepped difference and always applying stable force of tightening to the tool. CONSTITUTION:A tool 14 is set by positioning adjustment, and then a member, in which a stepped bolt 18 is inserted into a piece 17, is inserted into a diagonally provided clamping hole with a step difference, and fixed by screwing an external thread 18a in the point end of the stepped bolt 18 to an internal thread 16b in the clamping hole 16. Further the stepped bolt 18 is rotated, if its tightening is continued, component force, generated by a slope of the clamping hole 16, is transmitted to the tool 14 through the piece 17, and the tool 14 is tightened and fixed by downward pressing force of the piece 17. |
