| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a self-centering support in which a drive unit is arranged between a motor having a switching function and an intermediate piece unit moving axially toward the workpiece direction. <P>SOLUTION: The drive unit 61 is allowed to be driven by the motor 21, rotational motion of the motor 21 is allowed to be converted to a forwarding speed of the intermediate piece unit 8 in at least two different axial directions by the drive unit 61 which results in that a component force directed to the workpiece 4 is generated, a clutch 62 having a limiting motion is used between the intermediate piece unit 8 and the motor 21 to set the corresponding advancing speed of the intermediate piece unit 8, and thereby the drive unit 61 is allowed to be automatically switched to two different shift positions. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
