| 摘要 |
PURPOSE:To make any deviation in fine adjustment for a cylinder stroke from occurring, by setting a rotary device of a tool changing device and projecting and a retracting bevice as well as a tool locking and unlocking device down to a cam system in structure. CONSTITUTION:A cam groove 29 of a rotary device 33 is provided with an inclined part for rotating a tool changing arm 6. And, a cam groove 31 of a cam shaft 17 in a tool locking and unlocking devices 46 is made up of installing an inclined part operating a hook 45 to have a tool locked to a holding part 7 and another inclined part operating this hook 45 to release this lock. In addition, a cam groove 30 of a cam shaft 16 in a projecting and retracting device 35 is made up of installing an inclined part for projecting the changing arm 6 and another inclined part for retracting the changing arm 6. Each of the these cam grooves 29, 30 and 31 of respective cam shafts 15, 16 and 17 are operated by reciprocation of a hydraulic cylinder 24 for tool changing. |
