Paper Title (use style: paper title) - IJSDR

This attachment is held in the spindle of the drill press by a tapered Arbor, who drives the friction type mechanism. The tap holding chuck accurately centers the tap on the round part of the shank and floating jaws hold the tap on its square end in a firm, rigid grip, which prevents the tap from pulling out of the chuck when reversing. 4.4.9. ................
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