Chamfer forming apparatus for a crank shaft oil hole

Details Chamfer forming apparatus for a crank shaft oil hole Chamfer forming apparatus for a crank shaft oil hole

1997-06-12

1998-11-10

Howell, Daniel W.

Gear cutting, milling, or planing

Milling

Including means to infeed rotary cutter toward work

408 35, 408 43, 408234, 408236, B23C 112

Patent

active

058334106

ABSTRACT:
A chamfer forming apparatus for a crank shaft oil hole is provided with a spindle chuck which is variably moved in response to different locations of a crank shaft oil hole inlet portion. The invention includes linearly translating rack gear driven by an oil pressure cylinder, a pinion gear driven by the rack gear, a drum coaxially mounted to the pinion gear, a spindle chuck eccentrically rotatably mounted to the drum, a chucking a chamfer working tool, an adjusting bracket fixedly mounted to top end of the drum, a stopper member on two sides of the adjusting bracket, and a fixing bracket provided on the housing to limit the rotation of the drum within a predetermined angle range by contact with the stoppers.

REFERENCES:
patent: 2289111 (1942-07-01), Fett
patent: 3762272 (1973-10-01), Escobedo
patent: 4050354 (1977-09-01), Kuhnert
patent: 4109593 (1978-08-01), Sorensen
patent: 4216572 (1980-08-01), Matsushita et al.
patent: 4952105 (1990-08-01), Kitamura
patent: 5065492 (1991-11-01), Haas et al.
patent: 5197836 (1993-03-01), Crivellin
patent: 5702212 (1997-12-01), Erath et al.

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