On-line cutting-off method for special-shaped end of automobile frame cross beam

Abstract

The on-line cutting-off method for a special-shaped end of an automobile frame cross beam. The on-line cutting-off method for the special-shaped end of the automobile frame cross beam comprises the following steps that punching is carried out on the material belt, then the material belt is rolled into a shape, then on-line cutting is carried out on the special-shaped end head of the rolled productpiece strip, a material strip punching step is carried out according to the forming surface requirement of the special-shaped end head and the product piece length, a position pre-punching process slot hole and an edge notch are pre-punched on the material belt, and the roll pressing forming step is characterized in that the material strip roll is pressed on the roll pressing line into a productpiece material strip with the cross section of capital omega shape; and the cutting step is carried out on the special-shaped end head cutting-off device on line. According to the special-shaped end of the automobile frame cross beam, the machining process flow of the special-shaped end beam is shortened, the production cost is reduced, and the production efficiency is improved; the error caused by secondary positioning of the forming surface of the special-shaped end head under the line is avoided; the cutting device adopted by the on-line cutting-off step adopts a movable knife with a plurality of blades, one-time cutting and forming of three layers of the cross beam can be completed through cooperation of the static knife, not only can be used in cooperation with the roller press line,but also can be used in cooperation with a press machine, and the special-shaped end of the automobile frame cross beam is good in compatibility.

Description

technical field [0001] The invention relates to a strip cutting method, in particular to an on-line cutting method for the special-shaped end of the automobile frame beam. Background technique [0002] The car frame is composed of longitudinal beams and beams, and its form mainly has two types: side beam type and middle beam type. The beam is used to ensure the torsional stiffness of the frame and bear the longitudinal load, and it can also support the main components of the car, and is an important load-bearing part of the car frame. For beams with a simple end structure, the existing processing technology is mostly to cut off the ends after online roll forming. With the continuous development and design of automobile models, there are more and more types of beam end shapes, so higher requirements are put forward for the online cutting process of beam ends. According to the existing processing technology, if the processing surface of the end of the beam is more complicate...

AI Technical Summary

Problems solved by technology

This processing method prolongs the beam processing process and increases the processing cost. At the same time, offline processing requires re-clamping and positioning of the beam, resulting in accumulated tolerances and reducing the machining accuracy of the beam.

Images