| 摘要 |
PURPOSE:To make it possible to mount and dismount grooved rollers simply and rapidly without removing a wire extending mechanism by providing at least one side bearing member movable in the axial direction while the grooved rollers are held by the front and the rear bearing members. CONSTITUTION:Grooved rollers 2 and 3 are rotably held by the front side and the rear side bearing members 15a, 15b, 17a, and 17b respectively, and wires for cutting are wound to ring-form grooves 2a and 3a formed on the grooved rollers 2 and 3. When the grooved rollers 2 and 4 are replaced, nuts 21a and 21b are rotated respectively to pull in one side bearing members 15a and 15b through screw shafts 19a and 19b in holding tubes 16a and 16b. The grooved rollers 2 and 3 can be removed from both holding shafts 18 and 25, consequently. |
