Cutter for machining counterbore in engine block
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United States of America Patent
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-
Nov 13, 2012
Grant Date -
Dec 3, 2009
app pub date -
May 27, 2009
filing date -
May 28, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A tool for resurfacing a counterbore of a cylinder bore in an engine block includes a holder fixedly attached to the engine block using existing threaded holes, and a cutter rotatably supported by the holder and axially movable while being rotated. The cutter is positioned to cut and resurface a counterbore in the top of the cylinder bore. A plurality of springs bias the cutter head axially toward the engine block while rotating the cutter, thus providing a uniform force while cutting and resurfacing the counterbore. A ratchet wrench matably engages the upper end of the shaft to rotate the cutter, with the ratchet wrench extending in a single lateral direction from the shaft. A related method is also discussed.
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