Forming method of bevel-gear forging tooth-die

Abstract

The invention relates to a processing method for forming a bevel gear forging tooth die. In a three-dimensional design dynamic simulation, contact areas are positioned at the middle parts of the tooth length and the tooth height, and account for 60% in the tooth length direction. In designing, the drum-shape size is increased on the teeth shape; the high speed milled tooth die enable all corners to be round; the rounding off of gear corners and the rounding off of tooth root part are conducted; through the three dimension design, numerical control programming and digital treatment of an entity, an unchanged knife road is generated; repeated processing is conducted at unlimited times; each corner is a filleted corner through the rounding off process; an electrode is milled through a high speed numerical control mill; a semi-finished tooth die after heat treatment is processed through electric sparks; a tooth die cavity is manufactured; and finally a finished tooth die cavity is finely processed through the high speed numerical control mill, wherein, the speed of the main shaft of the fine processing of the high speed numerical control mill is 22000-30000r / min.

Description

technical field [0001] The invention belongs to a bevel gear forging process, in particular to a bevel gear forging tooth mold forming processing method. Background technique [0002] At present, the traditional processing method of the bevel gear forging tooth mold is as follows: planing the steel proof and copper electrode with the gear planer, using the copper electrode that has passed the test, and machining by electric spark erosion (rough machining, semi-finishing machining, and finishing machining) The semi-finished product of the tooth mold that has been heat-treated is used to make the cavity, and finally the cavity is polished manually or electrically. This kind of processing method has many production processes, low efficiency and high consumption. The precision of the processed mold is low and extremely unstable, and the edges and corners are not easy to be made into smooth and transitional fillets. And the influence of the conductivity of copper and the perform...

AI Technical Summary

Problems solved by technology

This kind of processing method has many production processes, low efficiency and high consumption. The precision of the processed mold is low and extremely unstable, and the edges and corners are not easy to be made into smooth and transitional fillets. And the influence of the conductivity of copper and the performance of EDM machine tools, resulting in different degrees of electrode loss

Therefore, the service life of tooth molds processed by traditional technology is relatively low, generally 2,500 pieces / block, which makes the production cost high and directly affects the rapid development of enterprises.