| 摘要 |
PURPOSE: To compensate a tool receiving tension and compression with spring force and exactly perform an aligning by arranging a spring correcting a change in length and a coupling moving in the longitudinal and radial directions between holding parts on the side of a machine and the side of a tool and integrally revolving both of the spring and the coupling. CONSTITUTION: A spring device 3 includes a spring 7 correcting a length under compression and a spring 8 correcting a length under tension. Both of the compression springs 7, 8 are constituted of elements 9 made of foam polyurethane elastic bodies and have excellent spring characteristics and damping characteristics. A carrying device 4 has a roller 16 which is mounted on a holding part 2 on the side of a tool and is engaged to an axial direction guide 17, the guide 17 is formed by a sleeve 18 fixed to a holding part 1 on the side of a machine tool and the holding parts 1, 2 relatively move in the axial direction. A coupling 6 has a coupling disc 21 which comes into surface contact with the holding part 2 and a tool receiving sleeve 5, a fastener 22 is engaged to a groove hole via a roller 23 in the holding part 2, a fastener 24 is engaged to a groove hole via a roller 25 in the sleeve 5, the coupling 6 easily moves to the holding part 2 and the sleeve 5 and the sleeve 5 is capable of radially moving for correcting deviation of the axial direction. |
