Internal broaching machine and internal broach
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 4, 2006
Grant Date -
Aug 26, 2004
app pub date -
Nov 25, 2003
filing date -
Feb 26, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A broach for internal broaching is formed on its pull end and/or follower end with a tapered surface machined with high accuracy. A pull head and/or a retrieving head of a broaching machine, which drivingly grip the pull end and the follower end the broach, is formed with a tapered inner surface complementary to the tapered surface of the broach. The pull head and the retrieving head grip the broach while pressing and clamping their tapered inner surface against the tapered surface, and these heads and the broach are firmly connected together. Clearances or gaps between the heads and the broach are thus eliminated, concentricity between the heads and the broach is significantly improved, and broaching can be performed with high accuracy.
First Claim
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Cited Art Landscape
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