Progressive die molding process for arc-shaped sheet metal component with U-shaped cross-section

Abstract

The invention relates to a progressive die molding process for an arc-shaped sheet metal component with a U-shaped cross-section, which is characterized by comprising the following procedures: 1) punching a positioning hole; 2) punching two horizontal border holes; 3) punching a vertical hole for communicating the two horizontal border holes to form a free edge; 4) punching a vertical positioningslot; 5) bending the free edge upwards for 90 degrees; 6) bending the 90-degree bent edge inwards for 45 degrees; 7) bending the 45-degree bent edge inwards for 45 degrees; 8) punching a horizontal compensation hole; 9) cutting the edge; 10) pressuring to form an arc shape; 11) carrying out forming correction; and 12) cutting auxiliary parts at the two ends to form a final product. By adopting the procedures, the product processing can be completed by one worker with one device, and the product processing cost can be reduced; and the positioning hole is used as a positioning benchmark, and nomanual positioning and clamping is needed. On one hand, the auxiliary working hours are reduced, the labor intensity is lowered, and the production efficiency is increased. On the other hand, the product processing accuracy is improved, the product forming quality is ensured, and the process is particularly suitable for production of large quantities of products.

Description

technical field [0001] The invention relates to a forming process of an arc-shaped sheet metal part, in particular to a progressive die forming process of a U-shaped section arc-shaped sheet metal part. Background technique [0002] U-shaped cross-section arc sheet metal parts are relatively common products in daily life or production. Especially small U-shaped cross-section arc-shaped sheet metal parts are widely used in industries such as aviation, automobiles, and home appliances. At present, the production method of this type of product is the single-sequence mold forming method. Specifically, it consists of four independent processes: blanking 1; folding U-shaped bending 2; pressing arc 3; forming correction 4. The above-mentioned single-sequence mold forming method is suitable for the production of single-piece or small-batch products, and the quality requirements of the products are not high. The above-mentioned single-sequence mold forming method has the following p...

AI Technical Summary

Problems solved by technology

[0003] 1. The 4 processes need to occupy 4 independent equipment, and at least 4 workers are required to complete the processing, resulting in high manufacturing and processing costs;

[0004] 2. Before the 2nd-4th process is processed, the semi-finished products transferred from the previous process need to be clamped and fixed, resulting in long auxiliary production time, low production efficiency and high labor intensity;

[0005] 3. The clamping and fixing before each process is mainly realized manually, resulting in low processing accuracy, poor stability and high scrap rate of the product

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