| 摘要 |
PURPOSE:To obtain wide upper space of the fitting part of a rivet and to apply punch-working mechanism even to the flank plate of nearly a box type work by arranging a rod for punch-working and the working mechanism in a diagonally upper direction. CONSTITUTION:A rotary driving shaft 2 is arranged on a straight line L inclined with less than the right angle from the center point 5e of a punch abutting surface, and to the rotary shaft, a first rotary holding body 3 and a second rotary holding body 4 are fitted so as to be freely rotated at a prescribed interval in a base body 7. The working rod 6 fitting the punch 5 at the tip part is held to a first rotary holding body so as to be freely rotated and held to a second rotary holding body so as to freely rotated through a universal coupling. The working rod is moved in the revolution or the rolling around the rotary shaft while restraining the rotation along the generating line of a right circular cone shape having the inclined straight line as an axis. |
