Metal working – Expanded metal making – By use of reciprocating perforator
Patent
1976-07-08
1977-06-21
Keenan, Michael J.
Metal working
Expanded metal making
By use of reciprocating perforator
72384, 72389, 72404, B21K 108
Patent
active
040301729
ABSTRACT:
Apparatus for forming a multiple throw crankshaft from metal rod in a single forming operation. The ends of the rod are held in axially movable units through which electrical resistance heating to a deformation temperature may be effected. A forming head for each throw is clamped about the rod at a precise location therealong. The forming heads are mounted on individual carriages, which are axially movable along the machine base, and each supports a subcarriage for horizontal transverse movement on the carriage driven by a horizontal cylinder. Each subcarriage supports one of the forming heads plus a vertical cylinder for moving the head transversely up or down. Control means is capable of simultaneously actuating the horizontal and vertical cylinders associated with any individual forming unit to thus achieve composite deforming movement of the forming head in any desired transverse angular direction.
REFERENCES:
patent: 2175156 (1939-10-01), Mummert
patent: 2318344 (1943-05-01), Urschel
patent: 2555695 (1951-06-01), Knight et al.
patent: 2653373 (1953-09-01), Brauchler
patent: 2669637 (1954-02-01), Pitt et al.
patent: 2676229 (1954-04-01), Knight
patent: 3385092 (1968-05-01), Scott
patent: 3628369 (1971-12-01), Williamson
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