C-beam forming method and c-beam forming die

Abstract

The invention provides a C-shaped beam forming method and a C-shaped beam forming mold. The method for forming a C-shaped beam includes the following steps: determining a reference edge on the raw material, and obtaining deformation deviation data based on the reduced section model; Two bent edges are formed on the side, and the two bent edges can be respectively retracted under the action of plastic shrinkage to form corresponding forming edges, so as to obtain the forming parameters of any section of the C-shaped beam along the length direction. The C-beam forming method can pre-determine the deformation amount deviation data in the forming process based on the plastic shrinkage of the raw materials, so as to obtain the accurate product deformation through the simulation calculation method, and accurately apply the anti-deformation control during the forming process, After the product is formed, it can achieve higher sectional dimensional accuracy under the action of aging deformation; and the above-mentioned deformation deviation data can be flexibly adjusted, so that the dimensional accuracy of the C-shaped beam can be flexibly controlled.

Description

technical field [0001] The invention relates to the technical field of rail vehicle production equipment, in particular to a C-beam forming method and a C-beam forming die. Background technique [0002] In the existing cab frame structure, a C-shaped longitudinal beam with a long length and twisted along the length direction is usually used as the main support beam in the frame structure, and after the longitudinal beam is manufactured and installed in the cab frame structure, the The stringer needs to be assembled with the skin, which requires a good fit between the stringer and the skin, so the dimensional accuracy of the stringer is very high. [0003] Existing C-beam manufacturing molds usually use proportional scaling to manufacture C-beams. However, after using the above conventional C-beam manufacturing mold to form the beam body, the beam body cross-section deformation is usually too large, even resulting in a deformation of more than 5mm, so that the longitudinal b...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a C-shaped beam forming method, which is used to solve the problems in the prior art that after the conventional C-shaped beam manufacturing mold is used to form the beam body, the section deformation of the beam body is usually too large, and the dimensional accuracy of the beam body cannot be controlled. Defects, realize the anti-deformation treatment in the forming process of C-shaped beams, and effectively improve the dimensional accuracy of C-shaped beams

Images