A method for processing and forming a rocker arm bracket

Abstract

Disclosed is a method for machining and shaping a rocker arm frame. The rocker arm frame includes an integrally shaped ball socket (5), a curved crown (3) and two symmetric side walls (1, 2), wherein one end of the two side walls is connected to the H-shaped curved crown, the other end is connected to the ball socket, a bottom part of the ball socket is provided with a small oil hole (6), and the side walls are each provided with an pin shaft hole. The method of machining and shaping comprises the following steps: blanking of a rocker arm profile, wherein a plate-shaped workpiece of the rocker arm is punched out using a punch; pre-bending, wherein the plate-shaped workpiece is pre-bent, forming a W-shaped workpiece; and lateral extrusion, wherein the lateral extrusion is performed on the W-shaped workpiece, forming the primary finished product of a rocker arm frame having the required H-shaped curved crown. The method eliminates the problem of severe localised attenuation in the course of shaping the side walls.

Description

technical field [0001] The invention belongs to the field of manufacturing engine accessories, and in particular relates to a method for processing and forming a rocker arm frame. Background technique [0002] With the development of engine technology, the manufacturing process of rocker arm frame, the main part of valve rocker arm or roller rocker arm, has gone through the stages of casting molding, hot forging molding, cold stamping molding, etc. The current advanced production technology adopts progressive die continuous Cold stamping forming process, the rocker frame formed by cold stamping has the advantages of light weight, high strength, good consistency, and high production efficiency. [0003] An existing rocker frame structure such as figure 1 Shown: The structure of the curved crown of the rocker arm frame matched with the valve is "H" shape, and the side wall needs to be bent at 180° during forming. The traditional forming process is to bend the sheet into a "U"...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to provide a new processing and forming process of the rocker arm frame, which is a roller rocker arm component of the valve mechanism with hydraulic automatic compensation gap, which solves the problem of partial seriousness in the forming process of the side wall of the curved crown. The problem of thinning is eliminated, and the gap between the two side walls is eliminated, so that the two side walls can fit tightly

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