Intelligent design of new-type line-contact space-meshing beveloid gear

Abstract

Provided is an intelligent design of a new-type line-contact space-meshing beveloid gear. On different end sections of the beveloid gear, tooth profiles have different modification coefficients. Tooth faces of standard involute beveloid gears are involute helicoids in the case of intersecting axes or crossed axes, while line contact is impossible with respect to meshing of the involute helicoids in the case of intersecting axes and crossed axes. In order to realize line contact, by means of the space meshing theory, a tooth face equation of another gear 2 which is conjugated with a known involute beveloid gear 1 is derived from a tooth face equation of the known involute beveloid gear 1. Then, the gear is compared with a standard involute beveloid gear, the tooth profile difference and the tooth direction difference are calculated and analyzed, and gear teeth of an involute beveloid gear which is closest to the gear 2 are modified by an appropriate method. By fitting error curves, the fitting error is controlled within the required range to obtain the tooth profile of the gear 2. In this way, a pair of intersecting-axis and crossed-axis beveloid gear pair capable of realizing line contact are obtained. The gear of the present invention is used to replace an involute transmission gear.

Description

1. Technical field [0001] The invention relates to a design method of a novel thickened gear with line contact space meshing. 2. Background technology [0002] With the development of modern science and technology and production technology, the requirements for mechanical transmission are getting higher and higher. In the high-speed, heavy-duty transmission, there is an urgent need for a reduction gear with high precision, good rigidity, small backlash, and no chatter. Thickened gear transmission has gained consensus in the machinery industry in recent years. At present, in many products, such as the transmission and transmission devices of high-speed packaging machinery, fast yachts, imported precision robots, etc., there are intersecting axis and cross-axis involute thickening gear transmissions, but due to this involute thickening In the case of intersecting shafts and intersecting shafts, gear transmission belongs to spatial point contact meshing, with low load capacit...

AI Technical Summary

Problems solved by technology

At present, in many products, such as the transmission and transmission devices of high-speed packaging machinery, fast yachts, imported precision robots, etc., there are intersecting axis and cross-axis involute thickening gear transmissions, but due to this involute thickening In the case of intersecting shafts and intersecting shafts, gear transmission belongs to spatial point contact meshing, with low load capacity and severe wear and tear. Therefore, frequent breakage of this kind of gear pair generally occurs, the service life is short, and a large amount of replacement is required. At present, there is no such gear pair in China. Manufacturers and research institutes can solve this problem

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