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公开(公告)号:US3575519A
公开(公告)日:1971-04-20
申请号:US3575519D
申请日:1969-06-02
申请人: RUSSELL L BRUNER , JOHN B STROHAUER
发明人: BRUNER RUSSELL L , STROHAUER JOHN B
CPC分类号: B23B49/02 , B23B2215/04 , Y10T408/56245 , Y10T408/57
摘要: A drill collet or guide assembly for portable drill tools that rigidly locks the drill tool to a jig bushing in an aligned position to ensure accurate and rapid drilling of a plurality of aligned bores in a workpiece.