Method and apparatus for external broaching of resin-coated part

Details Method and apparatus for external broaching of resin-coated part Method and apparatus for external broaching of resin-coated part

1986-05-30

1987-10-20

Weidenfeld, Gil

Gear cutting, milling, or planing

Broaching

Process

264138, 264161, 269 47, 409247, 409258, 409277, 29 235, 291568CF, B23D 3712, B23D 4106

Patent

active

047010851

ABSTRACT:
Method and apparatus for broaching an outer surface of a resin layer of a resin-coated part whose external side surface is coated with the resin layer, wherein a backing plate is used to back the resin-coated part such that the plate is held in contact with an end face of the part at which a movable broach terminates a broaching cut in a direction along the outer surface of the resin layer. The backing plate has an external profile similar to a cutting edge contour of the broach. The backing plate is positioned on a work bed of the broaching apparatus such that its external profile is inwardly spaced from the cutting edge contour of the broach a plane perpendicular to the direction of movement of the broach. The backing plate, which forms a part of a work-holding fixture, serves to protect the resin layer from breakage, chipping or other defects at the end of a broaching pass along the outside of the resin-coated part.

REFERENCES:
patent: 2050901 (1936-08-01), Sundell
patent: 2225731 (1940-12-01), Averill
patent: 2335515 (1943-11-01), Jehle
patent: 4304747 (1981-12-01), Lake
B. Wiedmann, SAE Technical Paper Series, (Development of Volkswagen's Supercharger G-Lader), Feb. 24-28, 1986.

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