Metal deforming – By pulling workpiece through closed periphery die – Movable die
Patent
1987-01-28
1988-02-02
Crane, Daniel C.
Metal deforming
By pulling workpiece through closed periphery die
Movable die
72283, 72370, B21C 124
Patent
active
047222131
ABSTRACT:
A bent tube is formed by passing a straight tube through a diameter-reducing die such that the central axis of the die forms an acute angle with the direction by which the tube is pulled through the die. The acute angle can be kept constant in order to produce a tube having a constant radius of curvature. Alternatively, the acute angle can be changed during the drawing process to form the tube with a radius of curvature which varies along the tube length.
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Enkvist, Gothe, "Method and Apparatus for Production of Tubes, and Resulting Product," PCT/SE82/00064, Sep., 1982.
Crane Daniel C.
Santrade Ltd.
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