Control method of zero-position correction for axial process straightening of straightening rollers of section steel straightening machine

Abstract

The invention discloses a control method for axial process straightening zero correction of a straightening roller of a shaped steel straightening machine. The control program of the control method comprises the following six control units: axial mechanical zero correction unit of the No. 2 straightening roller; axial process straightening zero correction unit of the No. 2 straightening roller; axial manual adjustment control unit of the No. 2 straightening roller; axial process straightening zero correction unit of the No. n straightening roller; No. n straightening roller axial process straightening zero correction unit; and axial manual adjustment control unit of the No. n straightening roller. According to the control method for axial process straightening zero correction of the straightening roller of the shaped steel straightening machine, the problem existing in practical use of the straightening zero correction cylinder of the straightening process of the straightening roller of the large H-shaped steel straightening machine is solved, and the axial process straightening zero correction of the straightening roller is achieved without the zero correction cylinder and other zero correction detection device. Therefore the axial process straightening correction control method of the straightening roller is not only simple and reliable, but also has a high zero correction precision.

Description

technical field [0001] The invention belongs to the technical field of electric automation control of iron and steel industry production equipment. More specifically, the present invention relates to a control method for correcting the zero position of the axial process straightening of a straightening roller of a section steel straightening machine. Background technique [0002] The large H-beam production line of the Maanshan Iron and Steel Long Products Division adopts a cantilever-roller variable-pitch leveler to straighten H-beam rolled parts on-line. Rollers, five are the lower straightening rollers), arranged in a staggered manner up and down, numbered R1-R9 respectively. [0003] The schematic diagram of the arrangement of the straightening rollers of the section steel straightening machine is as follows: figure 1 shown. [0004] Among the nine straightening rollers, except that the axial positions of the R1 and R9 straightening rollers are fixed, the rest of the ...

AI Technical Summary

Problems solved by technology

[0021] 1. The axial zero position of the straightening machine after the roll change cannot be realized automatically, and it can only be measured by manual wire drawing, which seriously affects the roll change time and delays production;

[0022] 2. During manual wire drawing measurement, due to the different wear and tear of the straightening roller sheets, the reference point is also different, which has a great impact on the straightening quality, especially the internal and external expansion of the flange after the rolling is difficult to control, including the rolled piece side bending, and poor straightening stability;

[0023] 3. There are unsafe problems during manual wire measurement, and there is no place for personnel to stand

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