FIELD: metal working, in particular, cutting tool holders. SUBSTANCE: boring chuck has body with shank and guides, cutter holder, cutter holder moving mechanism with microscopic screw. Adapter positioned between chuck body and cutter holder has guides and adapter moving mechanism with screw for preliminary adjustment of cutter in accordance with working sizes. Adapter is mounted in body guides and cutter holder is positioned in adapter guides. Guides of chuck body, adapter and cutter holder are of dovetail type. Such construction allows cutter to be withdrawn for greater distance relative to chuck body to increase the range of working sizes without readjustment. EFFECT: increased efficiency, wider versatility and convenient operation of boring chuck. 2 cl, 5 dwg
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Authors
Dates
1998-01-27—Published
1996-06-06—Filed