Metal deforming – By tool-couple embodying nonplanar tool-face – Similar tool-faces
Patent
1994-10-26
1996-06-18
Crane, Daniel C.
Metal deforming
By tool-couple embodying nonplanar tool-face
Similar tool-faces
72402, 72401, 72367, B21D 4100
Patent
active
055266703
ABSTRACT:
A process and device for shaping the end of a tube with an oblong cross-section to a circular cross-section, where the shaping occurs in a single radial compression stage from the exterior. The tube is disposed with its shortest axis in correspondence with two fixed opposite surfaces, having a circular profile with a radius of curvature which is approximately equal to the radius of the circular section of the tube which is to be obtained. A radial compression is then exerted along the longest axis of the oblong section of the non-deformed tube by a pair of shaping surfaces having an angular extension which is complementary to those of the fixed opposite surfaces.
REFERENCES:
patent: 2830645 (1958-04-01), Huet
patent: 3068929 (1962-12-01), Rowell
patent: 3780799 (1973-12-01), Pasternak
patent: 4389870 (1983-06-01), Boeni
patent: 4930331 (1990-06-01), Manning
Borletti Climatizzazione SRL
Crane Daniel C.
Manzo Edward D.
Ringsred Ted K.
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