Cutting – Tool or tool with support – Toothed blade or tooth therefor
Patent
1996-10-10
1999-03-30
Rachuba, Maurina T.
Cutting
Tool or tool with support
Toothed blade or tooth therefor
83846, 83663, B23D 5700
Patent
active
058875069
ABSTRACT:
A high speed rotary cutter assembly for cutting sheets of elastomeric materials wherein a rotary blade is affixedly mounted on one end of a spindle and rotates therewith at a rotational speed greater than 2000 rpm. The rotary blade includes a generally planar cutting surface and a tapered back surface to provide a clean cut and minimize abrasion of the cut surface. The rotary blade further includes between 4 and 40 peripheral lobes, each having an attack surface and a trailing surface. The trailing surface is cut more sharply than the attack surface to provide relief to the cut elastomeric material. The spindle includes a spindle bore which communicates cooling air to the rotary blade. The rotary cutter assembly also includes preloaded, permanently lubricated, angular contact ball bearings and a labyrinth seal to provide high speed operation without heat build-up. The cutter assembly includes a replacement means, which comprises a frame and gib lock, for quickly replacing worn shoe inserts and the insert assembly without the necessity for adjusting of the shoe or blade. The shoe insert has a top surface in the same plane as the top surface of the shoe and further includes grooves in the cutting face to relieve the surface.
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Lacher Frederick K.
Rachuba Maurina T.
The Goodyear Tire & Rubber Company
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