Brief discussion on vertical forging process of automobile steering knuckle

Brief discussion on vertical forging process of automobile steering knuckle
There is a negative Angle in the car, its manufacturing process is more complex, in the vertical forging process is impossible to forge out, so the integral car steering knuckle fork this horizontal forging process, along the axial direction (horizontal direction) of the steering knuckle parting, so because of the forging must exist in the drawing Angle and flying problems, resulting in a large margin at the bottom of the inner file, Flash big (material utilization rate is only about 72% on average), large forging force (need big tonnage pressure equipment), blocking (auxiliary process), need after two times in the forging オ blocking process can effectively guarantee the forming of parts, forming material utilization rate is low, the product cost is high.

In order to solve this problem, the manufacturer introduced an integral automobile steering knuckle vertical forging process, in order to ensure the supply of qualified parts, improve the utilization of materials, to solve the problem of high parts cost.

The specific steps of this process are as follows:

1. Fill the opening surface of the large ear of the car steering knuckle fork to form a positive Angle and form a die drawing Angle; The car steering knuckle is small and outside the ear of the open surface to fill, forming a positive Angle, forming a drawing Angle

2, from the automobile steering knuckle and flange salt, and along both sides of the fork lug vertical die parting, vertical die parting surface and rod vertical;

3, vertical forging on the forging machine, the use of round steel, without billet, after pre-forging, final forging directly forming: the large ear and small ear inside the bottom also directly forging forming; Then cutting edge, conditioning treatment;

4. The steering knuckle fork forgings after edge cutting and conditioning treatment are machined to produce large and inner ear opening surface and small and outer ear opening surface, so that the large and inner ear opening surface forms a negative Angle with the center line of the rod part, and the small and outer ear opening surface forms a negative Angle with the center line of the rod part.

Beneficial effects:

Due to the change of the mold parting form, the large and inner ear open surface and the small fork ear open surface were replenished, saving the blank making process, realizing vertical forging forming, and then the filling place processing forming; The vertical die parting area is about 50% less than that of horizontal forging, the forging strike force is about 50% less, the flying edge is reduced, the material utilization rate is about 20% higher, the secondary blank making process in horizontal forging is reduced, the forging efficiency is improved and the production cost is reduced. At the same time, because the bottom of the inner ear gear is formed by direct forging, the processing technology of drawing Angle formed by horizontal forging and the bottom of the inner ear gear is reduced.