Boring bar support means

Cutting by use of rotating axially moving tool – With radially outer limit of cutting edge moving to define...

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Details

408 79, 408708, B23B 4112

Patent

active

052096157

ABSTRACT:
An improved support mechanism for supporting a boring bar at spaced locations along its length within a workpiece during a boring operation, the present support mechanism being particularly adaptable for precision in-line boring of the cam shaft bores associated with overhead cam cylinder heads such as the Ford Escort overhead cylinder head presently in use and being specifically directed to centrally supporting the boring bar intermediate the respective opposite end portions of the cylinder head or other workpiece, the present support mechanism including a first annular member slidably positionable on the boring bar at an intermediate location along its length, the annular member being constructed to enable the boring bar to rotate freely therein, a second member slidably positionable within any one of the lifter bores associated with the particular cylinder head or other workpiece to be re-bored, the second member including a locking mechanism for locking the second member within any one of the lifter bores, and a mechanism for attaching the first annular member to the second member when the boring bar is positioned within the in-line cam shaft bores.

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patent: 4979850 (1990-12-01), Dompe

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