Machining method for curved-tooth-trace gear

Abstract

The invention discloses a machining method for a curved-tooth-trace gear. The method comprises the steps that a gear blank is machined through a first milling cutter; after all teeth are machined through the first milling cutter, the gear blank is continued being machined through a second milling cutter until all the teeth are machined; the first milling cutter and the second milling cutter are ina disc shape, and a plurality of cutting edges protruding in the axial direction are arranged on the disc faces in the circumferential directions; and during machining of each tooth, the cutting edges of the milling cutters cut in the radial direction of the gear blank to reach a preset tooth depth at first, and then generating motion is done, wherein during each time of generating motion, milling cutter feeding is stopped, the gear blank is driven to rotate around the circle center of the gear blank, meanwhile, the gear blank and / or the milling cutters is / are driven to move, thus, the milling cutters do rectilinear motion relative to the gear blank, and the rectilinear motion is done in the pitch point circle tangential direction of the gear blank. According to the scheme, the stabilitycan be ensured, the maintaining cost of the milling cutters is reduced, the cutting force is reduced, the cutters and tools are prevented from being abraded, and the product quality is improved.

Description

technical field [0001] The invention relates to a method for processing arc-tooth wire gears. Background technique [0002] Spiral gears (also known as spiral gears) are used in more and more gear transmissions, the main feature of which is that the teeth on the cylinder are arc-shaped. Spiral gears have the advantages of good meshing performance, large overlap coefficient, mutual offset of axial force, high transmission efficiency, high bending strength, and good tooth surface contact strength. Spiral gears have superior transmission characteristics and are used in most applications. It can replace the application of spur gear, helical gear and herringbone spur gear in the environment. At the same time, the spiral tooth cylindrical gear has the characteristics of stable transmission, low transmission noise, high efficiency, long service life, low use and safety requirements, etc., and has broad application prospects. [0003] Although the spiral-toothed wire gear has many...

AI Technical Summary

Problems solved by technology

Although the device disclosed in this patent can cut out arc-shaped tooth lines on the tooth blank, the cutters used in this patent include sun gears, idler gears and planetary gears. high

In addition, during the cutting process, the above-mentioned sun gear, idler gear and planetary gear are meshed and rotated with each other, and the resistance in the whole machining process is relatively large, not only the machining efficiency is not high, but also once one of the gears is damaged, the machining will be terminated, and the stability poor

[0005] Aiming at the problems of high cost, low stability, easy tool wear, and poor product quality in the processing scheme of arc-toothed gears in the related technology, no effective solution has been proposed yet

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