Finite Element Analysis And Optimization Of The Tool Of Rotary Tillers

Sustainable human development is inseparable from agriculture, which is the source of our food and clothing, to survive this. China has a vast, complex and volatile region, the development of agriculture can not be applied mechanically, to local conditions, specific issues to specific analysis. Northern plains, plains respect vigorously rotary machinery, liberation of labor, improve production efficiency; the mountainous southern hills and mountains, not large-scale agricultural machinery, and therefore the emergence of new rotary tillers, which can greatly accelerate agricultural mechanization road.Southern Hills is mainly used rotary tillers, which ultimately is the rotary knife soil tillage, conventional rotary knife, in use problem prone to wear and breakage, short life, poor performance, etc. Therefore, for process Tiller Rotary knife cutting soil studies, optimization and design better performance rotary knife to improve farming efficiency rotary tiller, to improve the life of rotary cutter, rotary tiller reduce power consumption and improve crop production, improve economic efficiency has very important significance.In recent years, with the development of the theory of finite element method, in particular continue to develop and improve finite element software, used in engineering problems more widely, to study aspects of soil cutting simulation has greatly facilitating role. Therefore, this article is mainly based on the finite element analysis method of thought, rotary tillers rotary knife for cutting the soil in the process dynamics simulation analysis of the whole, and the rotary cutter geometry as an important parameter tangent blade, cutting blade, etc. optimized design, mainly to obtain the following results:(1)The establishment of targeted soil data model based on the Southwest simulated Tiller Rotary knife cutting the whole process of the soil, after the results are processed and solving analysis, and simulation analysis of all data and spin Knife in the soil tillage actual stress of the parameters were compared to verify the reliability of the simulation results.(2)Replace the line with a cyclotron transition arc tangent to connect with the cutting blade edge, and improved transition rotary knife cutting edge curve effect simulation analysis to prove the feasibility of optimization.(3) In order to further reduce the positive facets cut soil resistance, reducing tool wear, reduce energy loss tangent blade surface is optimized for the best tangent highly optimized blade is 56 mm, the energy consumption is reduced by 15% optimize the effect is significant.(4)Through the analysis results when grinding angles are 40 °, 40 °, the energy loss can effectively reduce wear, but also enable the tool to maintain a certain sharpness, which is to further improve the efficiency of the cutting tool, and extend life.