Production technology of curling decorative tailpipe

Abstract

The invention provides a production process of a crimped decorative tailpipe, the steps comprising: (1) punching the sheet material into a desired shape; (2) bending the sheet material obtained in step (1) into a tubular shape; ( 3) Welding the overlapping ends of the sheet due to bending to form a tube to obtain a preformed tube; (4) The preformed tube obtained in step (3) is precisely formed into the required outer contour by hydraulic bulging (5) bending the mouth of the preformed pipe material obtained in step (4) into a semicircle by an elbow die; (6) shaping and flaring the preformed pipe material obtained in step (5) to form the pipe material desired shape. The present invention completes the preparation of the curling decorative tailpipe through blanking-bending-straight seam welding-punching process corner-bulging-elbow-head shaping-first flaring-second flaring, without the need for The sheet material is processed by multiple deep drawing processes, the operation process is greatly simplified compared with the multiple deep drawing process, and the precision controllability is improved, and the material utilization rate is improved.

Description

technical field [0001] The invention relates to a manufacturing process of auto parts, in particular to a production process of a curling decorative tailpipe. Background technique [0002] Car decorative tailpipes, that is, car tailpipes, are installed at the tail end of car exhaust pipes, which have the functions of decoration and noise reduction. Since the decorative tailpipe of a car is used at the end of the exhaust pipe, it is usually directly visible to the user. In order to achieve a more beautiful and rounded decorative effect, a circle of curling treatment is often done on the opening of the tailpipe, and the curling treatment is also beneficial Reduce exhaust emission noise. However, the curling molding process of the decorative tailpipe is more complicated. Generally, the tube is formed first and then the tubular mouth is curled. Traditionally, the curling molding process requires multiple drawing, shaping, trimming, punching, shaping, and flanging of the sheet m...

AI Technical Summary

Problems solved by technology

However, the curling molding process of the decorative tailpipe is more complicated. Generally, the tube is formed first and then the tubular mouth is curled. Traditionally, the curling molding process requires multiple drawing, shaping, trimming, punching, shaping, and flanging of the sheet material. And other processes, especially in the deep drawing process, due to the limitation of the deep drawing height, multiple deep drawing is often used, and its precision is difficult to control accurately. It can be seen that the traditional process is complex in forming, difficult in forming, and low in material utilization.

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