Method for machining impeller end face teeth and gear shaft end face teeth matched with impeller end face teeth

Abstract

A method for machining impeller end face teeth and gear shaft end face teeth matched with the impeller end face teeth is characterized in that a tool for machining the impeller end face teeth and a tool for machining the gear shaft end face teeth are designed respectively and are used for clamping and positioning workpieces, and the impeller end face teeth and the gear shaft end face teeth are machined on the same machining equipment step by step. According to the method, the advantages of good repeated positioning performance of a CNC boring and milling machine is used, a circulation function is used for numerical control programming, cutter feeding paths of all groove types are limited in a unified mode, and the minimization of cutter feeding repeated errors is guaranteed. The special tools are designed, a gear shaft and an impeller can both rotate around the rotating center of a machine tool, and error minimization is achieved from the aspect of the design principle. The same cutter is used for machining the wedge-shaped end face teeth of the gear shaft and the impeller, and consistency of tooth groove angles and tooth shape angles is achieved.

Description

technical field [0001] The invention relates to the field of numerical control machining of centrifugal air compressor products, in particular to a tooling design and a machining method for machining wedge-shaped end face teeth. Background technique [0002] The wedge-shaped end tooth structure is a better transmission mechanism, which has small dimensions and large transmission torque. After the joint, the master and slave parts have no relative sliding, and the transmission ratio remains unchanged. Moreover, after the impeller and the shaft are assembled, the axial force exerted by the pull rod and the nut enables the two to automatically center and maintain stability. Among the many tooth types, the equilateral triangle tooth type is the most widely used. Its radial cross-section tooth type is of unequal height, and the end surface is a concave cone surface. When meshing, the end teeth are inserted into each other's alveolar transmission, and the meshing surface is large....

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Problems solved by technology

In this way, the pull angle is calculated, and there is a calculation error, and there is an operation error in practice, so there is a deviation in the processed tooth profile angle, which will lead to poor contact surface in severe cases.

[0004] In the past processing, it is generally impossible to process the shaft and disc-shaped parts under the same working condition, resulting in poor contact of the tooth surface and unstable structure, which affects the popularization and application of the wedge-shaped end tooth structure in the field of centrifugal air compressors.

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