| 摘要 |
PURPOSE:To dispense with connection work of coolant pipes in replacement of a jig pallet, by providing each jig pallet with a coolant hole, which communicates with a coolant pipe, and by positioning the meeting faces of the jig pallet and a jig body on each other to connect the coolant hole of the jig pallet to that of the jig body. CONSTITUTION:Jig pallets 3, each of which is placed on a jig body 1, are provided with a common size for various types of working machines. Each jig pallet 3 has a positioning pin hole 9 in a common location. A positioning pin 7 of a piston 6 fitted in a first cylinder 4 of the jig body 1 is fitted in the pin hole 9 to position the pallet 3. The pallet is thrusted on the jig body 1 by a pallet hold-down member of a piston fitted in a second cylinder 5 of the body 1. Each jig pallet 3 is provided with a coolant hole 51 in a common position. The coolant hole is connected to a coolant manifold 49. The jig body 1 has a hole 52, which communicates with the coolant hole 51 when the meeting faces of the jig pallet and the jig body are positioned on each other. A main pipe 53 is connected to the hole 52. |
