Improved tube drive apparatus employing flexible drive belts
    1.
    发明公开
    Improved tube drive apparatus employing flexible drive belts 失效
    改进的管式驱动装置使用灵活的驱动皮带

    公开(公告)号:EP0249782A3

    公开(公告)日:1988-09-21

    申请号:EP87107813

    申请日:1987-05-29

    IPC分类号: G21C17/06 B23Q07/05

    摘要: The invention relates to apparatus for driving a generally cylindrical, elongate member, such as a tube or rod, along and about the longitudinal axis thereof. The apparatus (14) has several drive units (24) arrayed about an axis corresponding to the longitudinal centerline (34) of the elongate member (12) to be driven. Each drive unit (24) comprises a pair of rotatable members (pulleys 50, 52), and an endless flexible drive belt (48) trained around the rotatable members in a manner enabling the drive belt itself to be drivingly engaged with the elongate member to be driven. At least the rotatable member (50) near said axis is adapted to be selectively angulated relative to said axis so as to render the motion imparted to the elongate member selectively variable between pure rotation about, and pure translation along, the longitudinal centerline of the elongate member (12).