Turn broaching machine

Details Turn broaching machine Turn broaching machine

1996-09-16

1997-09-30

Howell, Daniel W.

Gear cutting, milling, or planing

Milling

With means to control temperature or lubricate

82900, 451 7, 451488, 384900, B23C 528

Patent

active

056720351

ABSTRACT:
A turn broaching machine for broaching a workpiece comprises a hollow arbor having a plurality of axially spaced apart, circumferentially extending cutting segments projecting radially outwardly from the side wall thereof. The cutting segments each have a radially outer peripheral edge provided with broaching elements. A closed loop system circulates a heated fluid through the arbor. The fluid is heated to an elevated temperature of about 100 F.-150 F. to maintain the arbor in a similarly heated condition during broaching. Maintaining the arbor at a relatively constant, elevated temperature during broaching stabilizes the broach by eliminating axial thermal expansion.

REFERENCES:
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patent: 2452046 (1948-10-01), Garrison et al.
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patent: 4392761 (1983-07-01), Eckle
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patent: 4668135 (1987-05-01), Hunt
patent: 4719830 (1988-01-01), Kawada et al.
patent: 4790698 (1988-12-01), Heffron
patent: 4948269 (1990-08-01), Hamilton
patent: 5592882 (1997-01-01), Toyoda

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