| 摘要 |
A spindle work stop including a collet having an externally threaded rear end portion with an external groove extending longitudinally therethrough and a slotted outwardly tapered front end portion, where an opening extends longitudinally through the collet, a rod inserted in the opening of the collet, a nut threadedly engaged on the threaded rear end portion of the collet, a sleeve member receiving the collet therein, and a lock member positioned between the nut and the sleeve member being disposed in the groove of the collet. The assembled work stop is inserted into an open end of a spindle of a lathe, and the nut is tightened to draw the collet rearwardly into the sleeve member while the lock member prevents the collet from rotating, so that the tapered front end portion of the collet is wedged against the sleeve member to squeeze the front end portion of the collet against the rod to secure the rod therein, and also to expand the sleeve member against the inner walls of the spindle to secure the sleeve member and the collet relative to the spindle and to each other. The locking member and the sleeve member can be modified to include mating tapered surfaces to provide a wedge engagement therebetween to expand the sleeve member against the inner walls of the spindle at the open end of the spindle. The sleeve member can also be modified so that the locking member forms a part thereof by providing a rib on an internal wall of the sleeve member at a rear portion thereof. Preferably, the sleeve member is fabricated from an elastomeric material.
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