Machining method for hardened face gear

Abstract

The invention relates to a machining method for a hardened face gear. The machining method comprises the following steps of (1) manufacturing a gear cutter, and machining a cutter relieving feeler capable of generating undercutting on the top of the gear cutter, wherein the cutter relieving feeler is formed outside an effective involute; (2) machining a gear blank, using a gear hobbing machine and a spiral bevel gear milling machine for conducting toothed machining on the gear blank, and forming an effective undercutting curve at the root of the gear; (3) conducting heat treatment, and conducting carburizing and quenching treatment on the gear; (4) conducting hole grinding treatment on an inner hole grinding machine with a gear ring, and conducting outer circle grinding on an outer circle grinding machine with a shaft gear; (5) conducting rolling or milling hardened face machining on the gear on the gear hobbing machine or the spiral bevel gear milling machine; (6) conducting toothed face grinding treatment on the machined gear on a gear honing machine or a bevel gear lapping machine. The machining method for the hardened face gear has the advantages that the tooth portion of the gear is high in machining precision, the cost of grinding teeth is low, and the machining efficiency is high.

Description

technical field [0001] The invention relates to a processing method of a hard tooth surface gear. Background technique [0002] Due to the rapid development of my country's gear industry, the market demand for gears has increased, and the requirements for the quality and accuracy of gears have also continued to increase. However, at present, high-precision gears are mainly processed by imported gear grinding machines, and their processing costs are very high. , and the efficiency is extremely low. Therefore, exploring new processing methods to improve the quality and accuracy of gears, expand manufacturing capacity, improve production efficiency, and meet the ever-increasing market demand has become a top priority for the gear industry. [0003] With the development of industry, the applicable occasions of gears are getting worse and worse, and the requirements for the load-carrying capacity and impact resistance of gears are also getting higher and higher, especially for pr...

AI Technical Summary

Problems solved by technology

Such subsequent processing, especially gear hobbing, is becoming more and more impossible to complete

For example, the DP665 series quenched and tempered gears made of 40CrNiMoA have a modulus of 3.5 and the number of teeth is 47, 67, 85, and 85. The quenched and tempered hardness is required to be HB=300-350; Parts of HB280 are already difficult to roll, and those exceeding HB290 can hardly roll; the cost of using custom-made special hobs is too high, and the delivery time of hobs is too long, which cannot meet the customer's finished product delivery time

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