Finite element-based pitch and tooth profile optimization method for 8M arc tooth synchronous belt

Abstract

The invention relates to a finite element-based pitch and tooth profile optimization method for an 8M arc tooth synchronous belt. By building a standard 8M arc tooth synchronous belt transmission finite element model, an interference stress occurring in high-speed meshing transmission between belt teeth and gear teeth is accurately calculated; and synchronous belt parameters are optimized by adopting a stress inversion method through an orthogonal experimental design. According to the optimized parameters, a new 8M arc tooth synchronous belt transmission model is built; an interference stressgenerated in meshing transmission of the synchronous belt after optimization is calculated; multiple optimization schemes are compared; and optimal pitch and tooth profile parameters are determined. Therefore, the 8M arc tooth synchronous belt with longer service life, higher transmission stability and higher transmission efficiency is designed. According to the optimized 8M arc tooth synchronousbelt, the interference stress generated in meshing of the belt teeth and the gear teeth is greatly reduced; the synchronous belt is longer in service life and smaller in energy loss; and the researchand development cycle and cost are greatly shortened and reduced.

Description

technical field [0001] The invention relates to the field of structural design, in particular to a finite element-based method for optimizing the pitch and tooth profile of an 8M arc-toothed synchronous belt. Background technique [0002] As one of the important products in the field of mechanical transmission, the synchronous belt combines the characteristics of belt transmission, chain transmission and gear transmission, and has the advantages of high transmission precision, low transmission noise and long service life. And with the improvement of design and production level, it will gradually replace V-belt drive, chain drive and gear drive, and is widely used in various fields such as electrical appliances, automobiles, and robots. At the same time, a lot of research work has been carried out on the mechanical analysis and structural analysis of synchronous belt transmission, the service life and failure mode of synchronous belt. [0003] The traditional synchronous bel...

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Problems solved by technology

[0003] The traditional synchronous belt tooth shape design can only design a new optimization scheme based on experience based on the damage of the product. The disadvantage of this method is that the optimization efficiency is low, and the finished product needs to be produced and tested repeatedly, which wastes manpower and material resources; the optimization result is not accurate enough, because it cannot be accurate It is difficult to determine the optimal solution by calculating the stress on the tooth top and tooth surface during the meshing and meshing of the synchronous belt

At the same time, the existing synchronous belt transmission modeling method also has many shortcomings. The traditional finite element algorithm of synchronous belt transmission can only realize quasi-static simulation, and does not consider the influence of rubber viscoelastic properties on contact stress. Although the multi-body dynamics algorithm can realize Dynamic calculation but inaccurate contact stress calculation, not suitable for analyzing timing belt meshing stress calculation

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