C-shaped beam forming method and C-shaped beam forming die

Abstract

The invention provides a C-shaped beam forming method and a C-shaped beam forming die. The C-shaped beam forming method comprises the following steps that a reference edge is determined on a raw material, and deformation deviation data are obtained based on a scaling section model; and on the basis of the reference edge and the deformation deviation data, the raw material is bent twice to form two bent edges at one side of the reference edge, the two bent edges can retract to form corresponding forming edges under the shaping shrinkage effect, and forming parameters of any section of a C-shaped beam in the length direction are obtained. According to the C-shaped beam forming method, deformation deviation data can be determined in advance in the forming process on the basis of the shaping shrinkage effect of raw material, so that the accurate product deformation condition is obtained through a simulation calculation means, reversible deformation control is accurately applied in the forming process, and higher section size precision can be achieved under the action of aging deformation after the product is formed; and moreover, the deformation deviation data is flexible and adjustable, 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 skeleton structure of the driver's cab, a C-shaped longitudinal beam that is long and twisted along the length direction is usually used as the main support beam in the skeleton structure, and after the longitudinal beam is manufactured and installed in the skeleton structure of the driver's cab, 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 molds for manufacturing C-shaped beams usually manufacture C-shaped beams in a manner of proportional scaling. However, after the above-mentioned conventional C-shaped beam manufacturing mold is used to form the beam body, the cross-sectional deformation of the beam body is usual...

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

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