Cutting by use of rotating axially moving tool – Tool or tool with support – With work-engaging structure detachable from cutting edge
Patent
1989-12-26
1991-03-05
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Tool or tool with support
With work-engaging structure detachable from cutting edge
408211, 408225, 408230, B23B 5102
Patent
active
049973223
ABSTRACT:
A body reaming tool for body work which can be used with a conventional drill to remove spot welds during automotive body repairs. A rigid shank coaxial with the longitudinal axis of the tool is fitted within the conventional chuck of a suitable electric hand drill. This increased diameter section is integral with the shank, and it includes an internal bore which coaxially receives twist drill bit used as a pilot. A conventional machine screw is employed in the counterbore section to lock the drill bit in place. The counterbore terminates in a plurality of fluted cutting teeth of a special configuration for quickly removing the metal, while preventing the metal from burring or otherwise interfering with subsequent part separation. Each of the cutting teeth terminate in a leading point which initially engages metal and the body part to be removed. A plurality of spiraling flutes are defined between the cutting teeth. The outermost faces of the teeth are generally planar, and they are defined between upper and lower outer radial edges. Due to the configuration employed, the lead point which is separated from the inner lagging point deflects metal away into the adjacent flutes.
REFERENCES:
patent: 1561463 (1925-11-01), de Rochemont
patent: 4167363 (1979-09-01), Whitesel
patent: 4565473 (1986-01-01), Hosoi
Harton James R.
Wells Bobby L.
Carver Stephen D.
Howell Daniel W.
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