Guiding means for boring bar

Details Guiding means for boring bar Guiding means for boring bar

1975-03-05

1976-02-03

Hinson, Harrison L.

Turning

Radially moving rotating tool inside bore

82 14, 408 82, B23B 4106

Patent

active

039357643

ABSTRACT:
Guide means are provided to guide a boring bar to provide a concentric opening in a work piece. The boring bar is in the form of a hollow sleeve which is guided by a separable guide pin fixed to a work table and which telescopes into the sleeve as the boring bar moves into the work piece. In one embodiment, a guide element projects inwardly into the opening in the sleeve to engage the guide pin. In another embodiment a roller bearing has a portion of its periphery projecting through a slot in the boring bar into the interior of the sleeve to engage the telescoping guide pin. Use of the hollow boring bar and the telescopic guide pin minimizes the length which otherwise would be required for a boring bar with guide means.

REFERENCES:
patent: 2500469 (1950-03-01), Rekettye
patent: 3795160 (1974-03-01), Janiszewski

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