JIG FOR HOLDING THIN CYLINDRICAL WORK, METHOD FOR PROCESSING THIN CYLINDRICAL WORK, AND SHEET FILM FORMING ROLL

摘要

thin cylindrical shape of the workpiece (W) of the holding fixture (1, 2 , 3), the workpiece (W) in the inner side from the holding for holding the support member (10, 10A, 10B) and a holding member (10, 10A, 10B) diameter changing unit for changing the diameter of the (25, 27) a. A holding member (10, 10A, 10B) is made of a metal in a cylindrical shape, it is possible to elastically expand reduced diameter. A holding member (10, 10A, 10B), the operation is the outer diameter at the time of insertion of the inner periphery of the water (W) is kept smaller than the inner diameter of the workpiece (W), that after inserting the inner diameter of the workpiece (W) is expanded by being in close contact with the entire inner peripheral surface of the outer peripheral surface the workpiece (W), the workpiece (W) is held from the inner side. Diameter changing unit (25, 27), at least the external force in the axial direction of the axial direction of the external force and the tensile compression direction either hold the member (10, 10A, 10B) by acting on both ends of, the holding member (10, 10A, 10B) changes the diameter of. ;