Design method of profiling mold for dash panel skin

Abstract

The invention provides a design method of a profiling mold for dash panel skin. The design method of the profiling mold for the dash panel skin comprises the following steps: obtaining a skin curved surface formed by mutually connecting a plurality of curves; drawing the curved surface in three-dimensional software according to the curvature radiuses of four boundaries of the curved surface of the skin obtained by calculating the radius of the fillet of a male die, and taking a plurality of curves which are crossed transversely and longitudinally and have mutually vertical projection planes on the curved surface; importing a three-dimensional curved surface model into two-dimensional software, drawing and machining a plurality of insertion plates corresponding to the curves, an assembly graph and a blanking card, and labeling the insertion plates in the assembly graph; machining the insertion plates; splicing and inserting the lower portions of the insertion plates, and splicing the upper portions of the insertion plates into a curved surface to be formed through the curves to form an insertion plate structure; injecting cement into an insertion plate structure framework to obtain the simple profiling mold; and after the cement is completely dried, placing an upper mold and a lower mold on a press machine, adjusting a profiling position, placing two blanked cover plates on the profiling surfaces of the upper mold and the lower mold separately for profiling, after forming, welding the cover plates to the upper mold and the lower mold separately, and spraying antirust paint.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a design method of a dash panel skin pressing mold. Background technique [0002] The power-concentrated electric multiple unit provides the latest high-tech traction power for my country's railways, laying the foundation for the subsequent research and development of high-speed passenger locomotives. In recent years, with the continuous upgrading of domestic locomotive products, the industry has paid more and more attention to the appearance of the whole vehicle, especially the appearance quality of the end of the chassis, and the streamlined and smooth appearance is more likely to be recognized by the market. [0003] The cowl panel of the centralized power electric multiple unit is an important part of the general assembly of the chassis, and the cowl panel skin is an important appearance part at the end of the chassis, and its surface quality directly affects the surface fla...

AI Technical Summary

Problems solved by technology

Since the cowl skin of the centralized power electric multiple unit is a special-shaped surface (that is, four sides on a curved surface contain more than two radii of curvature), the molding of this skin needs to be processed on a machining center, and the cost is very high. expensive

At the same time, because the design size of the cowl panel of the power centralized electric multiple unit is different from that of other locomotives of the company, the previous molding die cannot meet the production requirements

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