Car window lifting board forming process optimization method based on range analysis

Abstract

The invention discloses a car window lifting board forming process optimization method based on range analysis. The method comprises steps as follows: determining an optimization objective and optimization variables; establishing a finite element model; obtaining a process parameter combination of four best-fit springback factors through an orthogonal test and steps of a range analysis method. By the aid of the orthogonal test design and the range analysis method, the priority sequence of springback factors affecting a car window lifting board can be obtained and is shown as follows: A2>B2>D2>C3; best fitting of optimization variables including the board thickness A, the punching speed B, the friction factor C and the die clearance D is obtained, process parameters after optimized forming are shown as follows: the board thickness A is equal to 1 mm, B is equal to 5,000 mm / s, C is equal to 0.125 and D is equal to 1.15, the priority sequence of forming process parameters of parts is effectively analyzed, the forming process parameters are well optimized, defective parts are reduced, a theoretical basis is provided for actual production, dependence on a designer is reduced, the whole process design flow cycle is short, the efficiency is high, and the time cost and the material cost are reduced.

Description

technical field [0001] The invention belongs to the field of sheet metal complex bending forming technology, and in particular relates to a method for optimizing the forming process of a window lifting plate based on range analysis. Background technique [0002] With the rapid popularization and renewal of automobiles in the field of life and production, the window lifter is an important movable part to adjust the automobile window, and its assembly performance and performance directly determine the stability and smoothness of the window movement. It also greatly affects people's experience. Compared with other large panels and structural parts, the structure of the window lift plate has the characteristics of complex shape, large curvature change, and high assembly size requirements. In order to obtain high-quality parts in the actual production process, it is necessary to Reduce the springback of parts as much as possible to avoid the reduction of dimensional accuracy of ...

AI Technical Summary

Problems solved by technology

[0003] At this stage, in order to reduce the springback of parts after forming and improve product quality, the conventional solution is to complete the design of the initial forming process plan under the guidance of design experience and related manuals, and then carry out mold manufacturing and trial production. The obtained parts are assembled and inspected, and the assembly performance and quality of the parts are judged. The possible defects and deficiencies cannot be predicted in the whole process, and it is highly dependent on the experience of the designer.

Once there are problems such as excessive springback, low assembly accuracy or high part thinning rate, it is necessary to redesign and improve the original process parameters, and modify the dimensional parameters of the forming mold accordingly, and then repeat trial production, assembly and testing

The entire process design process has a long cycle, low efficiency, high time and material costs, and it is difficult to meet the current society's pursuit of fast and efficient manufacturing

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