Cutters – for shaping – Rectilinear broach – Including holder having seat for inserted tool
Patent
1979-05-18
1981-07-07
Hinson, Harrison L.
Cutters, for shaping
Rectilinear broach
Including holder having seat for inserted tool
B26D 112
Patent
active
042772079
ABSTRACT:
A broaching tool is described having an elongated tool body with an arcuate face of preferably half-round configuration. A plurality of recesses are formed on the arcuate face, each having a bottom face inclined inwardly and rearwardly within 1-15.degree. of coincidence with the longitudinal axis of the body and an abutment wall extending upwardly from a rearward portion of the bottom face. These recesses are arranged in helical paths of preferably increasing diameter in a rearward direction to form a series of spaced helical rows. Each recess contains a rotatably indexable cylindrical cutter disc. This configuration of broach has the advantages of providing excellent chip clearance between the cutters and also providing a uniform load on the tool during broaching.
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Hinson Harrison L.
J.P. Tool Ltd.
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