| 摘要 |
PURPOSE:To shorten an arranging time and to improve productivity by attaching a cutter for machining the outer periphery of a pin and of a journal and the side of a counter weight to a cutter head on one side, and a R-groove machining cutter to a cutter head on the other side. CONSTITUTION:After the machining positions of a work 3 are phase-divided to clamp its both ends by a chuck 2, an outer periphery machining cutter 5 is moved to the position of a pin P4, and a journal J5 is supported by a rest 6. In this state, the outer periphery of the pin P4 and the side of the counter weight 3a are machined. After this machining, the outer periphery machining cutter 5 is moved to a pin P3 to be machined next, and a R-groove machining cutter 7 is moved to the pin P4 finished in machining to simultaneously machine the outer periphery of the pin P3 and the side of the counter weight 3a and moreover the R-groove 3b of the pin P4. |
