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Bending forming method, system and device and medium

A storage medium and relationship technology, applied in transportation and packaging, special data processing applications, instruments, etc., can solve problems such as iterative optimization methods, achieve strong versatility, and avoid repeated trials

Pending Publication Date: 2019-06-11
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To solve the problem of bending springback compensation, two problems need to be solved: 1. The problem of the relationship between bending process setting parameters and forming angle; 2. The problem of iterative optimization method

Method used

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  • Bending forming method, system and device and medium
  • Bending forming method, system and device and medium
  • Bending forming method, system and device and medium

Examples

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Embodiment

[0058] The basic process of the present invention is as figure 1 As shown, the specific implementation process of this method is illustrated by taking the bending of a high-strength steel hat shape as an example. The established bending simulation geometric model and important geometric parameters such as figure 2 As shown, from left to right are the upper die, lower die and sheet.

[0059] Through the secondary development and batch simulation of python, the forming process of the die surface and the plate with different geometric parameters is simulated, and the corresponding relationship between the pressing amount and the forming angle is obtained, such as image 3 As shown, the illustration in the figure, such as R3_V16_1, represents that the upper die fillet radius in the main geometric parameters is 3 mm, the lower die opening width is 16 mm, and the sheet thickness is 1 mm.

[0060] Set the target forming angle of the equipment to 0° or set the target pressing amoun...

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Abstract

The invention provides a bending forming method, system and device and a medium. The bending forming method comprises the following steps that 1, the relation between set technological parameters of bending equipment and the actual forming angle of a workpiece is obtained; and 2, according to the deviation between the current forming angle and the actual forming angle, the current technological parameters of the bending equipment are processed through the relation between the set technological parameters of the bending equipment and the actual forming angle of the workpiece, and the processedtechnological parameters are obtained. The method has the beneficial effects that the importance of the zero deviation is indicated, and the measurement method and the calculation method of the zero deviation are given. When a material or a mold is replaced, parameters in a finite element or an analytical equation can be directly changed, and a new actual pressing amount-actual forming angle relation can be obtained; when the zero position of the equipment drifts, only a new zero position needs to be obtained through a test and substituted; and after the equipment or the system is replaced, only a new internal relation of the equipment needs to be obtained.

Description

technical field [0001] The invention relates to a bending process optimization method considering springback compensation, in particular to a bending forming method, system, device and medium considering springback compensation. Background technique [0002] A large number of sheet metal sheets, such as automobile panels and high-speed rail structural connectors, are obtained through multi-pass bending. The springback error of the sheet after bending is significant, and the springback of different materials and thicknesses is significantly different, which directly affects the follow-up. The quality and efficiency of the assembly, and the field repeatedly corrects the input parameters until it reaches the standard. Traditional adjustment methods rely heavily on worker experience, and the adjustment period is long for new raw materials, new target angles or new molds. The characteristics of the bending process for parts are many types of raw materials, small batches, high pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50B21D5/00B21D53/88
Inventor 何广忠
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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