| 摘要 |
<p>Collet/adapter assembly (22) which can be connected to a lathe spindle (20) for rotation therewith without removing the lathe chuck (24) as has heretofore been required. The assembly includes: a spindle nose (44) which is bolted to the face of the lathe chuck (24), a collet (42) which is slidably mounted in the spindle nose (44) and can be drawn into that component to bias the collet jaws (48, 50, 52) together and thereby secure a tool or workpiece (31) in the collet (42), and a collet adapter (46) which is fixed to the collet (42) and to the drawbar (40) operated slide (32) of the lathe chuck (24) so that the collet (42) can be drawn into the spindle nose (44) to bias the collet jaws (48, 50, 52) together as aforesaid by rectilinearly displacing the lathe drawbar (40). A spindle nose-mounted chuck closer (106) may be employed to bias the collet jaws (48, 50, 52) together in place of the spindle nose. This allows the collet/adapter assembly (22) to accept collets of larger jaw diameter than they could otherwise accommodate.</p> |
