Hard tooth surface gear finish turning process and design method of tooth turning tool of hard tooth surface gear

Abstract

The invention discloses a hard tooth surface gear finish turning process. The process comprises the steps that 1, a gear workpiece is roughly machined, a tooth turning process is adopted, machining allowance is reserved on the tooth surface of the workpiece, the tooth root of the workpiece is dug, and after rough machining is finished, heat treatment is carried out; 2, finish turning is carried out on the gear workpiece subjected to rough machining, a tooth turning process is adopted, the machining allowance of the tooth surface of the workpiece is cut off by the side edge of the cutter tooth,and the tooth root of the workpiece keeps the surface layer of heat treatment. A design method of a tooth turning tool of a hard tooth surface gear comprises the following steps of 1) the rake angleof the tooth turning tool is designed to be a negative angle, and the rake surface is designed to be a conical surface or a curved surface easy to grind; and 2) according to the flexible adjusting method of the working angle of the cylindrical tooth turning tool, the working angle of the tooth turning tool is made to fall within a preset range which is most suitable for finish machining of hard tooth surface gear workpiece with one certain hardness, and a gear cutting edge curve is calculated. Hard tooth surface gear machining efficiency is high, the using cost is low, gear transmission and noise reduction are facilitated, and the tool service life is long.

Description

technical field [0001] The invention belongs to the technical field of cylindrical gear processing and cutter design, and in particular relates to a hard-tooth surface gear finish turning process and a design method of a gear cutter. [0002] technical background [0003] Gear lightweight technology is an important direction for the future development of the gear industry, and hard tooth surface gear technology is one of the important means to achieve gear lightweight. Hardened gears have very broad application prospects in aerospace, wind power, nuclear power, automobiles, robots and other fields, which makes the industry's demand for high-efficiency, high-precision, and low-cost manufacturing technologies for hardened gears more and more urgent. The hobbing of hard tooth surface has relatively high processing efficiency and acceptable processing accuracy, but it cannot be used to process internal gears; the hard tooth surface gear shaping process can process internal gears,...

AI Technical Summary

Problems solved by technology

The hobbing of hard tooth surface has relatively high processing efficiency and acceptable processing accuracy, but it cannot be used to process internal gears; the hard tooth surface gear shaping process can process internal gears, double gears, etc., but the processing efficiency and processing accuracy are relatively low; Grinding and honing have high machining accuracy, and are the most commonly used methods for machining hardened gears. However, the efficiency of gear grinding is low, and there are many limitations when grinding internal gears. The removal efficiency of honing materials is not high, and The requirements for the rough machining accuracy of the workpiece are high; the efficiency and precision of broaching are relatively high, but the broaching equipment is expensive, the cost of special tools is extremely high, and the development cycle is also very long

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