| 摘要 |
PURPOSE:To improve the vibration damping function by integrally constituting a holding member for holding a boring bar with the adhesive for adhesion-joint and using said adhesive as a vibrationproof damper. CONSTITUTION:A boring bar 3 is inserted into a penetration hole 2 formed onto a base holder 1, and screwed in the radial direction by three bolts 4A, 4B, and 4C, and said boring bar 3 is fastened onto the base holder 1. A flange 7 which has the smaller diameter than that of the base holder 1 and has the penetration hole 6 drilled for the insertion of the boring bar 3 is inserted at the top edge part of the base holder 1. Further, the adhesive 9 made of urethane- series high polymeric resin is applied onto the both or one of the rear edge parts of a holding member 7 consisting of the flange at the top edge part of the base holder 1, and the holding member 7 consisting of the flange is attached at the top edge part of the base holder 1, and screwed by a bolt 8, and the boring bar 3 is fastened. |
