Precision forging and cold pressing forming machining process and die for end tooth side inverted cone combined teeth

Abstract

The invention relates to the field of end face combined tooth production, and particularly relates to a precision forging and cold pressing forming machining process and die for end tooth side inverted cone combined teeth. The precision forging and cold pressing forming machining process comprises an end combined tooth pre-forming die forming procedure, an end combined tooth precision forging pre-forming procedure, an overall tooth shape cold pressing finishing tooth die forming procedure and an end tooth side inverted cone combined tooth cold pressing forming procedure. According to the precision forging and cold pressing forming machining process and the machining die for the end tooth side inverted cone combined teeth, the production efficiency of the end tooth side inverted cone combined teeth can be improved, the production cost of the end tooth side inverted cone combined teeth is reduced, and especially the cutter consumption in the production machining process is reduced; and meanwhile, the strength of the end tooth side inverted cone combined teeth is improved, and the service life of the end tooth side inverted cone combined teeth is prolonged as a whole.

Description

technical field [0001] The invention relates to the field of end joint tooth production, in particular to a precision forging and cold-press forming processing technology and a die for the end tooth side inverted taper joint tooth. Background technique [0002] End coupling gear products are the key parts in the middle and rear axle transmission systems of vehicles, whether in the middle axle inter-axle reducer assembly of the vehicle or outside the inter-wheel reducer assembly and outside the rear axle differential assembly of some vehicles , more or less end-joint tooth parts play a vital role; the tooth shape production of foreign end-joint tooth parts has already adopted precision net shape forging, but in China, due to the forging process and various Due to the limitations of the conditions, various production enterprises have been using the process of machining and milling the end joint teeth to produce the end joint teeth. In particular, the structure of part of the ...

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Problems solved by technology

In particular, the structure of part of the end combined with the side of the tooth is inverted cone, and the traditional machining process is still used, that is, the bar or forged billet is used, the outer contour is machined by turning, and the inner spline is broached. Inverted cone 1 to 5 degrees, grind the end mill to match the angle of the flank inverted cone, and then use the formed milling cutter to mill the combined tooth profile on the CNC milling machine, and finally undergo carburizing, quenching, heat treatment and shot blasting treatment, that is The finished product can be delivered to the user for assembly; the above-mentioned production process, combined with the low efficiency of tooth milling, and the transition fillet and end chamfer at the bottom of the end flank, the milling process is more difficult and less efficient, and the tool consumption is extremely high. The final finished products of individual varieties are in the aftermarket, and the claim rate is relatively high, causing a lot of complaints in the terminal market

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