| 摘要 |
PROBLEM TO BE SOLVED: To provide a chucking device which firmly fixes an axle and applies a desired circumferential accuracy to a tread of a wheel, in a wheel lathe for cutting the tread of the wheel of a railway vehicle. SOLUTION: The chucking device includes: center members which move to come close to each other to hold a shaft of the axle in the longitudinal direction, and are engaged with center holes of both end faces of the shaft a fixing block having a circular arc shaped outer surface corresponding to the curvature of an inner peripheral surface of a rim part of the wheel to frictionally fix the wheel; a first moving means for moving the fixing block along the shaft; and a second moving means for moving at least three or more fixing blocks by an equal distance in the radial directions from the shaft. COPYRIGHT: (C)2011,JPO&INPIT
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