Field-portable hole broaching machines and methods for using the same
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United States of America Patent
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Sep 6, 2016
Grant Date -
N/A
app pub date -
Jul 21, 2014
filing date -
Oct 18, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A broaching machine includes a support structure, a pulling head for releasably coupling to an end of a broach, and an acme screw coupled to the pulling head for linearly moving the pulling head along a portion of the support structure. A gearbox assembly is supported by the support structure and is coupled to the acme screw for translating an applied rotational forced into linear motion of the acme screw and the pulling head. A first adapter plate is supported by the support structure for mating with a compatible second adapter plate coupled to a railroad rail. The first adapter plate includes an aperture allowing a broach coupled to the pulling head to linearly travel through a pilot hole formed through the railroad rail in response to the applied rotational force and responsive linear motion of the acme screw and the pulling head.
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