Machining method and clamp of automobile steering knuckle inverted cone hole

Abstract

The invention relates to a machining method of an automobile steering knuckle inverted cone hole. The method comprises the following technical steps that 1, steering knuckle workpieces are positionedon the left side and the right side of the machining clamp respectively, and a special quick-changing knife handle is arranged on a machining center main shaft; 2, the portions, where cone holes needto be machined, of the two steering knuckle workpieces are drilled, and rough milling is conducted so that an inverted cone bottom hole can be formed; 3, an inverted cone reamer is arranged on the special quick-changing knife handle; the inverted cone reamer is used for conducting precision reaming on the left steering knuckle workpiece so that the inverted cone hole can be formed; the machine isbrought to a halt, and the inverted cone reamer and the special quick-changing knife handle are quickly separated; 4, the machining center main shaft is moved to the portion, where cone holes need tobe machined, of the right steering knuckle workpiece, and the inverted cone reamer is arranged on the special quick-changing knife handle; the inverted cone reamer is used for conducting precision reaming on the right steering knuckle workpiece so that the inverted cone hole can be formed; 5, the machine is brought to a halt, and the inverted cone reamer and the special quick-changing knife handleare quickly separated; the machined steering knuckle workpieces on two sides are taken out. By adopting the machining method, the automobile steering knuckle inverted cone hole is machined, and the method is high in machining efficiency, high in machining precision and low in rejection rate.

Description

technical field [0001] The invention relates to the technical field of processing an automobile steering knuckle's reverse taper hole, in particular to a method for processing an automobile steering knuckle's reverse taper hole, and also relates to a processing fixture thereof. Background technique [0002] The car steering knuckle is an important safety part in the car steering system. Its function is to transmit and bear the load of the car suspension system, support and drive the wheel hub to rotate around the kingpin to make the car turn, and it also affects the driving stability, safety and steering of the car. sensitivity. [0003] The lower ball pin hole of the steering knuckle of passenger cars such as SUVs is mostly designed with an inverted tapered hole, which has the advantages of accurate positioning and reliable connection and locking. The so-called "inverted taper hole" means that relative to the feed direction of the tool, the outside hole of the taper hole i...

AI Technical Summary

Problems solved by technology

But the disadvantages are: manually loading and unloading the reamer, the labor intensity of the workers is high, the production efficiency is low, the processing cost of the tool is high, the quality of the taper hole is unstable, and the processing waste rate is 1% to 5%.

However: the drilling and boring process of this scheme is scattered, with multiple clamping, not suitable for CNC automatic machining such as machining centers, and the position accuracy of the taper hole is low; the surface accuracy of the boring hole is lower than that of the reaming hole; It is suitable for small-diameter taper hole processing, which obviously cannot meet the technical standards of SUV and other passenger car steering knuckles; at the same time, it needs to invest in a special boring machine, which increases the processing cost

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