Roll straightening tool

Details Roll straightening tool Roll straightening tool

1979-05-03

1981-06-02

Larson, Lowell A.

Metal deforming

By relatively receding work-engaging tool-faces

72479, B21D 3908

Patent

active

042703794

ABSTRACT:
Apparatus that is used to expand a collapsed hollow core of a damaged roll which includes an expandable bullet, uniformly expandable along its length by hydraulic cylinders, after being pulled into the core by means of a hollow piston ram and a drawbar. The bullet has an unexpanded cross-section of a football-like shape the area of which is about 10% less than the cross-sectional area of the hole in the undeformed core, allowing over expansion of the bullet which pulls the sides of the core in to form connecting chords. Add-on shells for larger cores are adaptable to the expandable base bullet.

REFERENCES:
patent: 1157073 (1915-10-01), Baash
patent: 1623405 (1927-04-01), Gocke et al.
patent: 1837690 (1931-12-01), Sunde
patent: 2185550 (1940-01-01), Gerdes
patent: 2263247 (1941-11-01), Raisanen
patent: 2517547 (1950-08-01), Derginer et al.
patent: 2686047 (1954-08-01), Duncan
patent: 2687763 (1954-08-01), Perkins
patent: 3061916 (1962-11-01), Kretz
patent: 3292903 (1966-12-01), Meyer et al.
patent: 3312099 (1967-04-01), Koepf et al.
patent: 3347522 (1967-10-01), Reinmann
patent: 3408848 (1968-11-01), Lague et al.
patent: 3625046 (1971-12-01), Van Gompel
patent: 3677058 (1972-07-01), Van Gompel

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