Drill bit and method of manufacture
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United States of America Patent
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-
Sep 21, 1982
Issued Date -
N/A
app pub date -
Sep 22, 1980
filing date -
Sep 18, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drag drill bit includes a plurality of cutter assemblies comprising synthetic polycrystalline diamonds which are held by brazing material within dimensionally controlled pockets formed in the drill bit matrix. The method of manufacturing the bit includes forming the drill bit head by powder metallurgy with a plurality of dimensionally controlled pockets, placing brazing material in communication with each pocket, locating and fixturing a cutter assembly within each pocket by force-fit and brazing the cutter assemblies to the bit head by a furnace cycle.
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