| 摘要 |
PURPOSE:To simplify shifting work of gear hobbing machine by employing a servo motor as a hob shift motor while pre-storing the hob-shift range necessary for each work in an electrical device. CONSTITUTION:An original point limit switch 9 and a left limit switch 11 are functioned through respective dog 12, 14. Here, the right adavance dog 13 is set further to the left than the hob shift right advance range. Upon start of automatic cycle, the hob shift is carried quickly from the original point to the hob shift starting position thus to perform the working cycle. The hob shift starting position and ending position are changed over to such positions as stored in an electrical device (not shown) with correspondence to the set number of machine type changeover switch. |
