Method of making lug journal for roller cutter drill bits

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United States of America Patent

PATENT NO 4982496
SERIAL NO

07437180

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method of machining a journal (14) on a lug (10) for a roller cutter drill bit in which the stand (22) holding the lug (10) is fixed and a cutting tool (26) is mounted on a holder ( 24) over the journal (14) for rotating about the journal (14). Two separate machining procedures for the journal (14) are provided with each machining procedure employing a separate cutting tool (24). A rough truing cut is made with a first cutting tool (24) and a final finish cut is made with a sharp second cutting tool (24) having cutting surfaces unused except on the finish surfaces.

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Patent Owner(s)

Patent OwnerAddress
REEDHYCALOG L P400 N SAM HOUSTON PARKWAY EAST SUITE 900 HOUSTON TX 77060

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gaither, Paul I Houston, TX 2 7
Klappenbach, Steve W Katy, TX 1 4

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