Steel plate cutting method and device

Abstract

The invention discloses a steel plate cutting method which comprises the following steps: acquiring the horizontal distance L1 between an entrance laser speed meter and an upper shear blade, acquiring the horizontal distance L2 between an exit laser speed meter and the upper shear blade, acquiring the total length B of a steel plate on a roller table, and acquiring the length L of the to-be-cut part of the steel plate; acquiring a steel plate cutting command of head cutting, tail cutting or segmenting; when the steel plate cutting command of head cutting or segmenting is acquired, acquiring the running speed V1 at the front end of the steel plate by the entrance laser speed meter, calculating the running time t1 of the steel plate according to the formula t1=(L+L1) / V1, and then carrying out cutting by the upper shear blade; and when the steel plate cutting command of tail cutting is acquired, acquiring the running speed V2 at the front end of the steel plate by the exit laser speed meter, calculating the running time t2 of the steel plate according to the formula t2=(B-L-L2) / V2, and then carrying out cutting by the upper shear blade. The invention further provides a steel plate cutting device. By adoption of the steel plate cutting method and device, the steel plate can be accurately cut and the steel plate cutting precision can be improved.

Description

technical field [0001] The invention relates to the technical field of steel plate cutting, and more specifically, relates to a steel plate cutting method and a device thereof. Background technique [0002] In the production process of steel plate, it is often necessary to cut, such as head, tail, segmentation, etc., to obtain the required size. At present, the cutting of the steel plate is mainly to use the attached figure 1 In the device shown, the steel plate runs in the direction of the arrow in the figure. When the position of the steel plate moves to a suitable position, the upper cutting edge 2 and the lower cutting edge 3 are used together to cut the steel plate running on the roller table 6. During the entire cutting process Among them, the entrance measurement roller 1 and the exit measurement roller 5 are used to monitor the steel plate cutting size, control the length and cutting position of the steel plate, and the exit pressure roller 4 is set in the cutting d...

AI Technical Summary

Problems solved by technology

[0003] The accuracy of the cutting size of the steel plate depends on the calibration of the size of the entrance measuring roller 1 and the exit measuring roller 5. However, in actual application, the entrance measuring roller 1 and the exit measuring roller 5 wear out quickly during use, and the entrance measuring roller after wear Roller 1 and outlet measuring roller 5 often cause calibration errors when used, resulting in deviations in steel plate cutting

At the same time, when the cylinder pressure of the measuring roller is unstable, it is easy to cause deviations in the cutting size of the steel plate

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