| 摘要 |
PURPOSE:To make it possible to independently mount and remove tools, by providing chucks for holding tools at the front ends of arms, means for displacing the arms in the direction of a rotary shaft, independently from each other, and an index means for rotating two arms integrally with each other. CONSTITUTION:Tool grip sections 32, 33 are formed in the front end parts of arms 5, 6 together with locating projections 30, 31, and tool holding chucks 36, 37 are rotatably provided by means of pins 34, 35. The retracting sections of press-rods 38, 39 confront the parts of guide holes formed in the arms 5, 6, and oppose the lateral surfaces of the stoppers 44, 45 or stopper holes 46, 47. Sensor rods 52, 53 pierce through a rotary shaft 4, a connecting member and rotary member 25a, and oppose proximity switches 56, 57 which are attached to the rotary member 25a by means of dogs 54, 55. Further the rotary shaft 4 is driven by an index rotary means. |
