Side pole novel forming technology and mould

Abstract

The present invention discloses a novel side post molding art work and relevant mold characterized in that: the mold comprises an upper mold plate and a lower mold plate; the blank is placed on the lower mold plate; the blank is adjusted to a right position, the sliding block of the press moves downward, driving the upper mold to move downward. During the course of downward moving of the upper mold, a male mold firstly goes in contact with a knockout punch, and the panel is firmly clamped; when the male mold moves on downward, the air cushion of the press shrinks synchronously, driving a push off pin and the knockout punch to move downward synchronously, and press the middle panel with a constant pressure together with the knockout punch; at the same time the two side panels go in contact with the embedded blocks of a female mold. Along with the gradual downward motion of the male mold, the panels are pulled deep into a cavity formed by the embedded blocks of the female mold. When the pull process is over, the sliding block goes upward, and the male mold separates from the knockout punch; the knockout punch is pushed by the push off pin to push the working piece out of the cavity formed by the embedded blocks of the female mold, and a working circulation.is finished. Parts produced by adopting the mold and art work regarding the invention have high molding accuracy, stable size, external shape pleasing to the eye ,and ensure the planeness requirement of a side wall.

Description

technical field [0001] The invention discloses a novel molding process of side columns and a mold, which are used for forming side columns of a side wall supporting frame in a steel structure of a railway passenger car body, and belong to the technical field of metal material processing and manufacturing. Background technique [0002] At present, in order to increase the passenger capacity, many passenger cars mostly use a drum-shaped body, and the side columns adopt a large arc B-shaped cross-section structure. The existing side column forming method adopts the stretch bending forming process. Bend-cut head. Due to the large difference between the curvature radius of the straight line and the arc of the workpiece, the section at the rounded corner of the workpiece shrinks and deforms sharply during stretch bending, and the height of the section decreases. After forming, the dimensions of the section of the workpiece are inconsistent. In addition, there is a height differen...

AI Technical Summary

Problems solved by technology

[0003] The invention discloses a new molding process and mold for a side column, which adopts a brand-new box-type composite mold structure, which solves the defects of poor manufacturability, twisted workpiece and uneven wing surface of the existing side column molding technology.

Images