Method of drilling holes in reinforced metal matrix composites

Details Method of drilling holes in reinforced metal matrix composites Method of drilling holes in reinforced metal matrix composites

1993-10-04

1995-05-16

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Processes

Bit detachable

408241R, B23B 3500

Patent

active

054155002

ABSTRACT:
A method and apparatus for forming cleanly defined holes through reinforced metal matrix material includes a drill bit with a shank portion and flutes on said shank portion, the drill bit capable of withstanding a chip load of at least about 0.008 inch/rev/flute, and preferably in the range of from about 0.008 inch/rev/flute to about 0.012 inch/rev/flute, achieved through turning the bit at a speed within the range of about 18 surface feet per minute ("sfpm") to about 20 sfpm, and advancing the bit at an aggressive rate through the metal matrix material at a rate of from about 3 inches per minute to about 6 inches per minute.

REFERENCES:
Tool and Manufacturing Engineers Handbook, Third Edition, Society of Manufacturing Engineers, 1976, Chapter 3, pp. 10-19 and 26-29.

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