1. Select material cutting, and at the same time determine the machining allowance to facilitate subsequent processing operations.

2. The half shaft is forged on the air hammer and the cap is placed with a pendulum mill.

3. Shot peening on the half shaft.

4. Straighten the blank bar to ensure the verticality. In the straightening, the first time is the blank straightening, and the second time is the straightening after the heat treatment after the heat treatment to ensure that the runout is not more than 0.08, 0.2 and 0.4. The blank is straightened, and the semi-axle is supported by two fixed straightening roller devices, and a transmission connecting device is matched with the two protruding portions on the flange end of the half shaft, and the half shaft is rotated, and the tailstock tip is placed against the half shaft. The shank, the head of the straightening machine falls, and the half shaft is aligned under the action of the roller and the ram. Straightening after heat treatment, the semi-axle is supported at both ends of the clamp, and the clamp can be easily moved from one end to the other end, so that the indenter can load the small end of the drill at any height between the spline end and the flange end. The center hole and the rough outer circle.

5. Rough car small end, using a hexagonal turret lathe or a profiling lathe for roughing and finishing.

6. Car big hole
The flat end face is a key process to increase the productivity of the semi-axle production line, and it is better to use a plunge-cut end face.

7. The big end of the rough car, the big end of the fine car, the small end of the fine car.

8. Cold rolling spline
The knurled spline is positioned at the center hole at both ends, and the involute spline is rolled, and the instrument required to roll the spline is a spline rolling machine. The gauges required are micrometers and integrated spline gauges. In order to improve the production efficiency and fatigue strength of the semi-ax spline, a spline cold rolling forming process has been widely used. The process is a chipless cold forming process for a power transmission component and a toothed workpiece.
This process greatly improves the accuracy of cold formed toothed workpieces. During the rolling process, all relevant parameters are positioned and controlled, so that a certain number of teeth and an accurate tooth shape can be obtained. Taking the rolling gong as an example, a steel shaft is positioned at a starting position between the two formed racks, the teeth of the end are shallow, and only the initial shape of the spline is pressed on the workpiece, the two racks Move quickly in the opposite direction, drive the workpiece to rotate, and squeeze the metal on the surface of the workpiece step by step. At this time, a dent is clearly visible. At this point, the toothed part can be rotated for a few weeks to ensure the geometry and accuracy of the tooth geometry required for quality control.