Automatic control system and method for high-precision straightening machine

Abstract

The invention relates to an automatic control system and method for a high-precision straightening machine and belongs to the field of automatic control. Through the automatic control system and method, the straightness (curvature) reaches over 0.3 mm / m according to the straightening precision of the high-precision straightening machine; a hardware structure and a software method of the automatic control system for the high-precision straightening machine are designed considering closed-loop control of oil source pressure and oil cylinder piston displacement of a hydraulic system of the high-precision straightening machine, continuous detection of straightening operation process data, stepless speed regulation control for calibrating transmission of all sets of straightening rollers and the like, the international advanced level of three-dimensional rotation straightening under high-precision automatic control is reached, consistency of roller gap precision in the straightening process, stability of evenly distributed and balanced straightening force and reliability of nonlinear variable gain automatic compensation can be guaranteed, the straightness is improved to 0.2 mm / m from 0.3 mm / m according to the straightening precision of the high-precision straightening machine, and the straightening target that straightened materials have no blind area or tiny crack or scratch or oval or bounce is achieved.

Description

technical field [0001] The invention belongs to the field of automatic control, and in particular relates to an automatic control system and a control method of a high-precision straightening machine. Background technique [0002] With the rapid development of my country's industry, rare metals and their alloy materials are more and more widely used in aerospace, electronic communication, nuclear power generation and other industrial fields. m to 0.2mm / m, the straightening accuracy of the straightening machines currently produced in my country mostly stays above 1mm / m, and the highest can only reach about 0.5mm / m, which cannot meet the high straightness straightening demand of 0.3mm / m. It is even more unable to meet the straightening requirements of extremely thin-walled pipes with a wall thickness of less than 0.5mm; therefore, high-precision straightening equipment is required for finishing production lines after rolling of rare metals and their alloy materials and emerging ...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of my country's industry, rare metals and their alloy materials are more and more widely used in aerospace, electronic communication, nuclear power generation and other industrial fields. m to 0.2mm / m, the straightening accuracy of the straightening machines currently produced in my country mostly stays above 1mm / m, and the highest can only reach about 0.5mm / m, which cannot meet the high straightness straightening demand of 0.3mm / m. It is even more unable to meet the straightening requirements of extremely thin-walled pipes with a wall thickness of less than 0.5mm; therefore, high-precision straightening equipment is required for finishing production lines after rolling of rare metals and their alloy materials and emerging industries such as nuclear power generation; Stable high-precision straightening equipment must be equipped with a high-precision straightening automatic control system in order to achieve high-precision straightening goals

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