The steering knuckle is one of the important parts of the automobile steering axle, which can make the car run smoothly and transmit the driving direction sensitively.
The function of the steering knuckle is to transmit and bear the load of the front of the car, support and drive the front wheel to rotate around the kingpin, and make the car turn.
During the driving process, the car is subjected to changing impact loads, so it is required to have higher strength. Its structure is complex, and it concentrates the structural characteristics of parts such as shafts, sleeves, disc rings, fork frames, etc. It is mainly composed of supporting shaft necks, flanges, fork frames and other parts.
With the center hole as the positioning reference, the main processing methods are turning and grinding. Turning is used for preliminary forming, and grinding is a key process to ensure the dimensional accuracy and surface quality of the tie rod. The main processing of the brake mounting hole must ensure its position and take into account the processing efficiency. At the same time, one of the holes is used as the positioning reference for the subsequent processing of the fork.
The processing of the shift fork is a difficult point in the processing of the steering knuckle. The processing of the shift fork requires the coaxiality of the kingpin hole and the perpendicularity of the kingpin hole to the inner end surface. In addition, some steering knuckles have a tapered hole for installing the tie rod assembly at this position, which increases the processing difficulty. Double-pin single-side positioning is usually adopted during processing to ensure the processing accuracy.
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