| 摘要 |
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. |
