Railway carriage angle part window eaves shaping mold

Abstract

A forming die for the window eaves at the corner part of a railway carriage includes a lower mold fixedly connected with a lower mold seat and an upper mold fixedly connected with a templet. The mold surface shapes of the lower mold and the upper mold are corresponding to the shape of a workpiece of the window eaves at the corner part of the railway carriage. The lower mold consists of a fixed lower mold, an elastic lower mold and a spring arranged along the vertical direction. The spring is arranged in a neck at the back surface of the elastic lower mold on the lower mold seat. A side supporting plate fixedly connected with the lower mold seat is arranged on the external side on the vertical direction of the elastic lower mold. The interface of the fixed lower mold and the elastic lower mold is coplanar with a pitch arc formed by the lowest points of the lower concavely folded side at the lower side on the vertical direction of workpiece of the window eaves at the corner part of the railway carriage. The die uses two lower molds of the fixed lower mold and the elastic lower mold with completely different performances at an extremely centralized location of the internal stress for the workpiece of the window eaves at the corner part of the railway carriage and the material is not easy to lose stability, crinkle and the invention can lead workpiece of the window eaves at the corner part of the railway carriage to be able to use one set of die to form by one time during the processing process; thus improving the product quality and reducing the product manufacture cost.

Description

technical field [0001] The invention relates to a mold for processing parts of a railway passenger car, in particular to a forming mold for the cornice at the corner of a railway passenger car. Background technique [0002] The corner rain eaves are installed on the outer surface of the railway passenger car, and the quality of its production directly affects the overall appearance of the railway passenger car. As shown in Figure 1, Figure 2, and Figure 3, the shape of the corner rain eaves is special and the structure is complex. On the basis of the overall arc shape, it also has several zigzag edges, especially the lower edge has two nearly 90-degree convex , Concave edge, resulting in uneven stress distribution inside the workpiece, and the material is prone to instability and wrinkling during processing. Therefore, the traditional processing technology is very complicated, including multiple processes such as blanking, bending, bending, and shape adjustment, and It is d...

AI Technical Summary

Problems solved by technology

As shown in Figure 1, Figure 2, and Figure 3, the shape of the corner rain eaves is special and the structure is complex. On the basis of the overall arc shape, it also has several zigzag edges, especially the lower edge has two nearly 90-degree convex , Concave edge, resulting in uneven stress distribution inside the workpiece, and the material is prone to instability and wrinkling during processing. Therefore, the traditional processing technology is very complicated, including multiple processes such as blanking, bending, bending, and shape adjustment, and It is difficult to ensure the consistency of the curved arc, and it is necessary to add multiple welds, which increases the difficulty of the overall assembly of the car body and makes the external shape of the car body unattractive.

[0003] Some people use the method of molding to make corner rain cornices. Three sets of large molds are needed. First, one set of molds is used to press out the closed ring-shaped workpiece, and then the other two sets of molds are used to press out the curved edges of different shapes of the corner rain cornices. Finally, the pressed ring-shaped workpiece is cut, which takes up a lot of space, has many procedures, the process is also very complicated, and the cost is high.

[0004] As far as the applicant knows, there is no mold capable of one-time compression forming of the rain cornice at the corner of a railway passenger car

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