| 摘要 |
PURPOSE:To absorb an error in coaxial state between holes in bearing members provided on a carrier, irrespective of the direction of the error and in a wide range, and enable the bearing members to be securely supported without any chattering or the like, by energizing the bearing member on one side in the axial direction by an elastic means, and supporting the bearing members so that they can be oscillated in radial directions so as to correct wrong conditions between a guide shaft and the bearing members. CONSTITUTION:A carrier 2 is supported by a guide shaft 1 and a slidable member 7 so that it can be moved in the axial direction of the shaft 1. The carrier 2 can be turned on the guide shaft 1, the range of turning being limited by the slidable member 7 and a rear frame 8. A pair of bearing members 3, 4 are loosely and oscillatably fitted in bearing parts 2a, 2b provided on the carrier 2, and a support member 6 is fitted between the bewaring members 3, 4. An elastic member 5 is provided between one 3 of the bearing members and the carrier 2, and the one bearing member 3 is energized toward the support member 6. Thus, an error in coaxial state between holes in the bearing members provided on the carrier can be absorbed in a wide range, irrespective of the direction of the error, and the bearing members can be securely supported without any chattering or the like. |
