| 摘要 |
<p>The coupling or clutch is for driving between axially-aligned rotating parts, and is particularly adaptable in non-reversing tapping attachments. The attachment can, however, be driven in the reverse direction. A clutch drive is provided for driving in either rotational direction. The clutch drive is in the form of a sleeve with a ball race carrying driving balls interposed between axial splines on one part and axial grooves on the other part. The splines have an intermediate interruption for de-clutching after relative axial movement of the rotating parts. After further relative axial movement the balls re-engage the splines beyond the interruption, and the attachment is then driven in the reverse direction.</p> |
