Bending and straightening apparatus

Details Bending and straightening apparatus Bending and straightening apparatus

1984-04-18

1986-07-15

Husar, Francis S.

Metal deforming

With use of control means energized in response to activator...

Sensing work or product

72 21, 72 31, 72390, B21B 3708

Patent

active

045998787

ABSTRACT:
The method and apparatus are for bending or straightening a material such as a rail. A simple form of the apparatus comprises two spaced contact members for contacting the rail, and a rail lifting member located between these points arranged to lift the rail between the two points, the lifting member being arranged to engage the head of the rail. A preferred method comprises applying a load to the material and, while the load is applied, continuously or periodically measuring the load applied and the displacement of the material relative to the datum, establishing from the measurements a load at which the plastic component of the total deformation measured is equal to the predetermined deformation from the datum, and then removing the load.

REFERENCES:
patent: 1129650 (1915-02-01), Dean
patent: 1777686 (1930-10-01), Bagge
patent: 1796696 (1931-03-01), Trimble
patent: 2180157 (1939-11-01), Loftus
patent: 2434254 (1948-01-01), Benner
patent: 3713312 (1973-01-01), Galdabini
patent: 4408471 (1983-10-01), Gossard et al.

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