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    • 3. 发明申请
    • LATHE
    • 车床
    • US20080156154A1
    • 2008-07-03
    • US11966319
    • 2007-12-28
    • Yoshitane UEMURAKoji KAWASAKIDaigo YAMAMOTO
    • Yoshitane UEMURAKoji KAWASAKIDaigo YAMAMOTO
    • B23B23/00
    • B23B23/025B23B31/16287B23B31/40Y10T82/2564
    • The lathe comprises: a spindle for holding one end side of an annular workpiece W; a rotation drive mechanism for rotating the spindle; and a holding mechanism 20 for holding the other end side of the workpiece W. The holding mechanism 20 comprises: an inserting member 21 which is arranged to rotate freely and of which distal end is inserted into an interior of the other end side of the workpiece W; a support member 28 which supports the inserting member 21 to rotate freely; a plurality of contact members 23 which are arranged on an outer circumferential surface of the distal end of the inserting member 21 and which outwardly protrude to be in contact with an inner circumferential surface of the workpiece W; and a drive mechanism 30 for driving each of the contact members 23 so as to be brought into contact to each other.
    • 该车床包括:用于保持环形工件W的一端侧的主轴; 用于旋转所述心轴的旋转驱动机构; 以及用于保持工件W的另一端侧的保持机构20.保持机构20包括:插入构件21,其被布置成自由旋转,并且该远端插入到工件的另一端侧的内部 W; 支撑构件28,其支撑插入构件21以自由旋转; 多个接触构件23,其布置在插入构件21的远端的外周表面上并且向外突出以与工件W的内周表面接触; 以及用于驱动每个接触构件23以使得彼此接触的驱动机构30。