Bevel gear machining method

Abstract

The invention discloses a bevel gear machining method. According to the geometric parameters and the required tooth system of a gear to be machined, the method comprises the following steps that: (1) the parameters of a shaping gear wheel are determined; (2) the tooth traces of the shaping gear wheel are determined; (3) the parameters of a cutter are determined; (4) the cutter movement on the tooth surface of the shaping gear wheel is determined; (5) the basic tooth surface modification of the shaping gear wheel is determined; (6) the movement of the shaping gear wheel generating the gear is determined; (7) the movement of the gear generated by the shaping gear wheel is corrected; and (8) the generation of the gear to be machined is completed. The invention has the advantages that: (1) the cutting and the grinding of bevel gears with straight teeth, curved teeth, cycloidal teeth, quasi-involute teeth and the like can be implemented on one machine tool; (2) the dimension of the cutter is determined only by the module of the gear to be machined and has nothing to do with the diameter of the gear to be machined and the tooth width; (3) the diameter of the cutter or the grinding wheel is small, the torque of the machine tool spindle is small, the force applied to the machine tool is small, the deformation of the machine tool is small and the machining accuracy is high; (4) the position, the dimension and the shape of the contact spots on the tooth surface can be conveniently controlled and all kinds of theoretically full-conjugated bevel gear pairs can be machined; and (5) the transmission ratio function required by the gear pairs to be machined can be accurately realized.

Description

Technical field: [0001] The invention relates to a bevel gear processing method, which is a cutting and grinding processing method suitable for straight teeth and various curved bevel gears. Background technique: [0002] 1. Traditional bevel gear machining principles and methods [0003] There are two types of bevel gears: curved teeth and straight teeth. There are three main types of curved bevel gears: 1) shrinking arc gears, 2) cycloidal gears with equal heights and 3) quasi-involute bevel gears with equal heights. [0004] At present, the processing method of shrinking spiral bevel gears is represented by Gleason, and the machine tool shaker represents the production wheel. The cutting blades used are arranged on the same diameter on the same side. The common rotating surface of multiple blades during processing is the cutting The trajectory surface of the motion is the gear tooth surface. The tooth line of the profile wheel is an arc, and the tooth surface of the pr...

AI Technical Summary

Problems solved by technology

[0023] 4) The cutting trajectory surface of the tool for processing cycloidal teeth and quasi-involute bevel gears is not a rotary surface, so the teeth cannot be ground;

[0024] 5) The shrinking arc teeth and quasi-involute bevel gears processed by the current method are theoretically not conjugate, and only approximate methods can be used, so it is difficult to control the contact spots and motion curves of the gear pair

[0025] The existing straight-toothed bevel gear planing method has low efficiency and cannot process large gears; double-cutter milling cannot process large gears due to tooth width restrictions; circular drawing tools are special, extremely expensive, and cannot process large gears

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