掘進機截割部減速器優(yōu)化設(shè)計研究
[Abstract]:The reducer is an important part of the cutting part of the roadheader, and its performance determines the working ability of the roadheader. Planetary gear transmission has been widely used in the design of reducer because of its high transmission ratio, high transmission efficiency and light weight. Combined with the comprehensive application of CAD/CAM/CAE software and MATLAB optimization design module, the paper optimizes the design of the reducer of the cutting part of the tunneling machine, in order to shorten the product design cycle and save the cost. Firstly, through UG and CAXA software, the 3D modeling and virtual assembly of the cutting part reducer of the roadheader are carried out. The tooth contour line is generated by software CAXA, and the tooth contour line is generated directly by inputting some parameters, such as tooth number, modulus, pressure angle, modification coefficient and so on, and then the IGES format file is exported, and then imported into UG to carry on the detailed 3D modeling. And the virtual assembly is completed. Secondly, the theoretical calculation provides the basis for the programming of the optimization program. At the same time, the input shaft, the drive shaft and the output shaft of the reducer are checked. Finally, the paper verifies the calculation condition and the strength condition of the planetary gear transmission. Finally, the paper makes a strength check on the input shaft, the drive shaft and the output shaft of the reducer. The optimum design of cutting part reducer of roadheader is carried out by MATLAB software. The optimal design takes the minimum volume of the reducer as the objective function, the calculation conditions (transmission ratio condition, concentric condition, contiguity condition, assembly condition) and the design condition of gear (the limit condition of tooth surface contact coincidence degree) for planetary gear transmission. The limiting conditions of tooth number and displacement coefficient, tooth width coefficient, gear tooth surface contact strength, gear tooth root bending condition) are taken as constraint conditions. Through the optimization calculation of the established optimization model, the optimization results satisfying all the constraints are obtained. Through the proper roundness of individual design variables, the final optimization results are obtained under the condition of satisfying the design requirements of the two-stage planetary gear transmission structure. The optimization results show that the volume of the reducer is reduced by 3.5%, which can effectively reduce the cost of the product.
【學位授予單位】:吉林大學
【學位級別】:碩士
【學位授予年份】:2011
【分類號】:TH132.46
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