Novel method for stamping back door avoiding part at rear part of car top cover product

Abstract

The invention discloses a novel method for stamping a back door avoiding part at the rear part of a car top cover product, and belongs to the field of automobile accessory machining. The method sequentially comprises the steps of OP10 drawing, OP20 trimming and punching side shaping, OP30 trimming and punching flanging shaping and OP40 trimming and punching side punching side flanging. According to the method, due to the fact that the shape is increased at the position of the drawing die male die in the side shaping area, so that the length of the shaping area line is improved so that the sideshaping required material can be stored enough for the OP20 side shaping area, the problems of dark cracking, slippage and wrinkling in the side shaping step are solved, and the die debugging time isshortened, so that the cost of the whole product in the die development stage is reduced; during mass production, the probability of unqualified products can be effectively avoided, and the generatedeconomic benefits are not neglected. The competitiveness of an enterprise in market economy is improved when the market competition is fierce; and the method is simple, practical, stable, reliable, and is convenient to popularize.

Description

technical field

[0001] The invention relates to the field of auto parts processing, in particular to a new stamping method for solving the side shaping slippage and wrinkling of the rear part of the car top cover. Background technique

[0002] At present, the stamping process of the back door avoidance part of the car roof product is generally: OP10 drawing (see figure 1 ), OP20 Trimming Punching Side Shaping, OP30 Trimming Punching Flanging Shaping and OP40 Trimming Punching Side Punching Side Flanging. When OP10 is drawn, the rear part of the top cover to avoid the back door is generally concave in the side wall, which cannot be formed by one-time drawing. The general practice is to draw OP10 along the stamping direction and consider the draft angle of 10-12° to form the drawn parts ( figure 1 ), OP20 adopts side shaping process to achieve the required shape of the product ( figure 2 ). Due to the large plastic surgery area, often within the scope of the side plastic ...

Examples

Embodiment

[0019] A new stamping method for the back door avoidance part of the car top cover product, which sequentially includes: OP10 drawing, OP20 trimming and punching side shaping, OP30 trimming and punching flanging and shaping, and OP40 trimming and punching side punching and rollover side.

[0020] The side shaping of the back door avoidance part at the back of the top cover is carried out by OP20, and the structure diagram of the mold used is as follows Figure 4 As shown, including the positive feeder 1, the side shaping insert 2, the side presser 3 and the lower die insert 4, etc., the processing and debugging steps of the shaping die of the new stamping process method are the same as the existing scheme, and remain unchanged.

[0021] The main change point is OP10: that is, the shape is added to the position of the drawing die punch in the side shaping area (see image 3 ), to increase the length of the plastic surgery area, so as to store enough materials for the side plas...

technical field

[0001] The invention relates to the field of auto parts processing, in particular to a new stamping method for solving the side shaping slippage and wrinkling of the rear part of the car top cover. Background technique

[0002] At present, the stamping process of the back door avoidance part of the car roof product is generally: OP10 drawing (see figure 1 ), OP20 Trimming Punching Side Shaping, OP30 Trimming Punching Flanging Shaping and OP40 Trimming Punching Side Punching Side Flanging. When OP10 is drawn, the rear part of the top cover to avoid the back door is generally concave in the side wall, which cannot be formed by one-time drawing. The general practice is to draw OP10 along the stamping direction and consider the draft angle of 10-12° to form the drawn parts ( figure 1 ), OP20 adopts side shaping process to achieve the required shape of the product ( figure 2 ). Due to the large plastic surgery area, often within the scope of the side plastic ...

Examples

Embodiment

[0019] A new stamping method for the back door avoidance part of the car top cover product, which sequentially includes: OP10 drawing, OP20 trimming and punching side shaping, OP30 trimming and punching flanging and shaping, and OP40 trimming and punching side punching and rollover side.

[0020] The side shaping of the back door avoidance part at the back of the top cover is carried out by OP20, and the structure diagram of the mold used is as follows Figure 4 As shown, including the positive feeder 1, the side shaping insert 2, the side presser 3 and the lower die insert 4, etc., the processing and debugging steps of the shaping die of the new stamping process method are the same as the existing scheme, and remain unchanged.

[0021] The main change point is OP10: that is, the shape is added to the position of the drawing die punch in the side shaping area (see image 3 ), to increase the length of the plastic surgery area, so as to store enough materials for the side plas...

Images