High-precision positioning method applied to rotary cutter

Abstract

The embodiment of the invention discloses a high-precision positioning method applied to a rotary cutter. For the adjustment of the lap of a cutter head, a mechanical structure and an electric structure of the rotary cutter are combined together to simplify the calculation process and change the control mode of a servo motor into a speed mode control. The high-precision positioning method overcomes mechanical clearance errors of the superposition of a plurality of gears; and the horizontal clearance is controlled by an improved mechanical clearance compensation method to eliminate the influence on the positioning precision of the cutter head because of the mechanical clearance changes caused by abrasion. The high-precision positioning method has the advantages of high positioning precision, simple program implementation algorithm, stable control effect and quick response speed, can improve the trimming material yield of strip steel and reduce the time for variable specification adjustment, and is very helpful for improving the output of acid cleaning strip steel and increasing the economic benefit of a production line.

Description

technical field [0001] The invention relates to the technical field of disc shear control, in particular to a high-precision positioning method applied to a disc shear. Background technique [0002] Pickling is an important process in the production of modern strip steel. In the process of pickling production, after the strip has been hot-rolled, there are often edge defects such as cracked edges and uneven edges. At this time, it is necessary to adopt a certain shearing process to cut the edge of the strip according to the process requirements to eliminate the edge defects of the hot-rolled strip, obtain high-quality products, and provide high-quality raw materials for the subsequent process (cold rolling). . [0003] It can be known from the working principle of the disc shear that the gap and overlap of the disc shear directly determine the quality of the strip trimming. It is easy to cause burrs on the edge of the strip, the shearing mouth is not smooth, and even the s...

AI Technical Summary

Problems solved by technology

[0006] At present, the widely used disc shear control systems have adopted advanced programmable logic controllers (PLC) to realize the positioning of the gap and overlap, but due to the extremely high positioning control accuracy requirements of the disc shears (such as some types of Oriented silicon steel edge trimming requires clearance positioning accuracy within ±0.02mm), and after a period of use, the mechanical transmission part of the disc shears inevitably has mechanical inherent errors, mechanical clearances, mechanical wear, etc., and mechanical reasons early The resulting error will increase cumulatively with the prolongation of the use time. The traditional dynamic reverse gap compensation method cannot guarantee the accuracy required by the process. Often, manual adjustment is required after positioning, so it can only be defined as semi-automatic adjustment and positioning.

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