Cutting control method for rolling-cutting type bilateral scissors
A control method and double-shear technology, which is applied to shear machine control devices, shearing devices, manufacturing tools, etc., can solve problems such as deviation of double-sided shears, affecting the yield of thick plate processes, and difficulty in stability, etc.
Active Publication Date: 2014-01-29
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
However, in fact, because there are many influencing factors, it is difficult to grasp the adjustment amount of each factor
Furthermore, all influencing factors are a dynamic process, and it is difficult to stabilize at a certain level.
This directly leads to the uncertainty and unsteady characteristics of the deviation of the steel plate
The uncontrolled deviation of bilateral shears has seriously affected the yield rate of the thick plate process and the straight rate of the shearing line, which has always been a major problem that plagues the production of thick plates
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[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] 1. Principle introduction
[0024] The difference between the present invention and the prior art is that another key factor that affects the deviation is found, and this factor is controllable and easy to adjust. Combined with the actual production situation, by adjusting the specific method of this factor, the deviation can be realized at a certain level. It is stable and controllable to a certain extent, and then achieves the purpose of reducing the amount of deviation.
[0025] Therefore, the tuning technique must meet the following requirements:
[0026] 1. The adjustment method is effective for reducing deviation, and the direction is clear
[0027] After the key factors are determined, it is proved that they will affect the deviation to a large extent.
[0028] 2. The adjustment method is easy to implement
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The invention discloses a cutting control method for rolling-cutting type bilateral scissors. According to the control method, the control accelerated velocity a of a pinch roller is determined and calculated according to the shearing preset step length L and the shearing preset velocity v issued by a process model computer, velocity control of a motor of the pinch roller is carried out according to the accelerated velocity a, and therefore the accelerated velocity of the pinch roller is reduced to the maximum degree on the operating condition of setting the shearing velocity, the slipping phenomenon between the pinch roller and a steel plate is reduced, and the deflection amount of the steel plate in the shearing process is reduced.
Description
technical field [0001] The invention relates to shear control technology, more specifically, to a rolling-cut double-sided shear control method. Background technique [0002] Thick plate enterprises use the most popular shearing equipment for wide and thick plates in the world——roller-cut double-sided shears to carry out step-by-step fixed-width double-sided shears in the width direction of steel plates. The entire double-sided shearing equipment mainly includes the main parts such as entrance roller table, centering laser scribing, width adjustment static pressure guide rail, fixed side frame, mobile side frame, pinch roller, knife table and shear blade. In the thick plate shearing process, the quality defects of the steel plate are mainly concentrated in the double shear area. Shearing defects such as wrong knives, burrs, and joint marks caused by double-sided shearing problems have become the crux of the quality of many wide and thick plate factories. Among the many fac...
Claims
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Inventor 刘飞张志忠王玺王磊顾华沈大良熊新华
Owner BAOSHAN IRON & STEEL CO LTD