Roll bending process control method and system

Abstract

The invention provides a roll bending process control method and system. The control method includes the steps that target parameter data of a profile are obtained; before-rebound parameter data are calculated according to the target parameter data through a rebound formula; according to the before-rebound parameter data, a drive roller rotation angle output value and a bending roller displacementoutput value of a roll bending device are determined; in the roll bending forming process, the actual bending radius of the rolled bent profile is detected in real time to obtain a bending radius feedback value; a bending roller displacement feedback value is determined according to the bending radius feedback value by using the relational expression of the bending radius and the bending roller displacement; and the bending roller displacement feedback value is compared with the bending roller displacement output value, a displacement error of a bending roller is calculated, and the bending roller displacement output value is adjusted according to the displacement error. According to the method, rebound compensation is carried out on a rolled bent part before roll bending, and in the rollbending process, the bending radius of the profile is corrected by detecting error data in real time, so that rebound errors can be reduced, and the roll bending forming precision of the profile is improved.

Description

technical field [0001] The invention relates to the technical field of roll bending processing, in particular to a roll bending process control method and system. Background technique [0002] The roll bending process is mainly used in the field of profile roll bending control required by aviation, aerospace and other projects. In the profile roll forming process, due to the elastic-plastic deformation of the material, it is very easy to have springback problems, resulting in very difficult control of forming accuracy. Difficult. For constant curvature rolling, the accuracy can be guaranteed by making corrections in multiple rolls. For variable curvature rolling, there is currently no good solution. How to improve the forming quality of variable curvature roll bending has become a technical problem to be solved urgently. Contents of the invention [0003] The object of the present invention is to provide a roll bending process control method and system to improve the form...

AI Technical Summary

Problems solved by technology

[0002] The roll bending process is mainly used in the field of profile roll bending control required by aviation, aerospace and other projects. In the profile roll forming process, due to the elastic-plastic deformation of the material, it is very easy to have springback problems, resulting in very difficult control of forming accuracy. Difficult. For constant curvature rolling, multiple rolls can be corrected to ensure accuracy. For variable curvature rolling, there is currently no good solution

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