Method to control between rolling stands the drawing of the roll

Details Method to control between rolling stands the drawing of the roll Method to control between rolling stands the drawing of the roll

1996-08-02

1998-07-28

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

Including tautening of work during deformation

72 86, 72 114, 72 123, B21B 3908

Patent

active

057849145

ABSTRACT:
A method of controlling and maintaining a drawing force applied to a length of rolled stock between two-spaced apart rolling units includes the steps of determining the value of at least one of a frequency and an amplitude of a transversed vibration of the rolled stock between the drawing units, correlation of the determined value to a corresponding value of drawing force, comparison of the correlated value of the drawing force to a reference value, and adjustment of the drawing force to maintain it at a substantially constant selected value. In another aspect of the invention an apparatus is provided which includes elements for measuring at least one of a frequency and an amplitude of a traversed vibration experienced by a length of rolled stock between two drawing units, a unit for correlating the measured value to a corresponding value of applied drawing force, and a control unit for adjusting the applied drawing force as necessary to maintain it substantially at a selected constant value.

REFERENCES:
patent: 1341651 (1920-06-01), Lammers
patent: 4535614 (1985-08-01), Oka
patent: 4549420 (1985-10-01), Cloostermans-Huwaert
patent: 4607511 (1986-08-01), Shore
patent: 4665730 (1987-05-01), Maroti
Patent Abstracts of Japan, vol. 16, No, 314 (M-1278) Jul. 9, 1992 & JP-A-04 089124 (Daido Steel Co. Ltd.) 23 Mar. 1992 Abstract.
Patent Abstracts of Japan, vol. 8, No. 80 (M-289) 12, Apr. 1984 & JP-A-58 224018 (Kobe Seikosho K.K.) Dec. 1983 Abstract.
Patent Abstracts of Japan, vol. 9, No. 235 (M-415), Sep. 21, 1985 & JP-A-60 092009 (Toshiba) 23 May 1985--Abstract.

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