| 摘要 |
PURPOSE:To improve accuracy of concentric assembling of plural elements to be positioned by putting a positioning pin in the center hole of a reference shaft in such a manner that the expanded part of the pin end portion is positioned in the middle of an adjacent bearing. CONSTITUTION:A positioning pin 38 for positioning a reference shaft 25 is fixed on a block 33 capable of moving in the direction of pushing positioning shafts 15, 16. Cylinder devices 11, 12 for moving the positioning shafts are fixed on a plate body 46 coupled to the block 33 by a coupling rod 45. The plate body 46 is provided with a vibrator 47. The expanded part 40 of the end portion of the positioning pin 38 put in the center hole 27 of the reference shaft 25 is adjusted in such a manner as to position at an intermediate between a bearing 22 and a bearing 23. Thus, a difference (h) of the center line between each fitting part of bearings 22, 23 due to bending of the reference shaft 25 can be reduced nearly to zero. |
