CB-B32型齒輪泵的CAE分析及參數(shù)優(yōu)化研究
[Abstract]:Gear pump is a very common hydraulic pump in industrial production and life. Involute external gear pump has many advantages, such as small volume, light weight, stable performance and so on. However, due to the structural characteristics of involute gear meshing, there are a series of shortcomings such as oil leakage, flow pulsation and oil trapping in meshing. Based on the example of CB-B32 gear pump for small agricultural gear pump, this paper analyzes and optimizes the related problems by using CAE software and finite element method, which lays a foundation for better development and further research of involute gear pump. The main contents and conclusions of this paper are as follows: (1) the CB-B32 gear pump is disassembled, classified and numbered, and the 3D modeling software Pro/E is used to carry out 3D modeling, assembly and interference analysis. The global interference is zero, the correctness of the modeling is proved, the internal mechanism of gear pump is clearly reflected, and the foundation is laid for the analysis of gear pump in the following chapters. (2) simplify the two-dimensional model of gear pump. The GAMBIT software is used to preprocess the gear pump boundary, and it is imported into the FLUENT software for fluid analysis. The internal pressure cloud diagram, velocity cloud diagram and streamline diagram of gear pump at different speed of gear spindle are obtained, which is helpful to better understand the phenomenon of oil trap and flow pulsation inside gear pump. It also determines the reasonable basis for selecting the rotational speed of the gear pump's active wheel. (3) simplify the three-dimensional contact model of the two involute gears in the gear pump and import the ANSYS software to carry on the contact analysis and the bending fatigue analysis respectively. Combined with the meshing structure of two involute gears, the distribution diagram of equivalent stress and the equivalent bending stress diagram of the two gears are obtained, and the position of the maximum contact stress of the gear is obtained, which is the place where fatigue failure is most likely to occur. It lays a good theoretical foundation for gear parameter optimization and gear research in the next step. (4) dynamic and kinematic analysis of gear contact is carried out by using ADAMS software and optimization research is carried out on the basis of tooth number and modulus. The optimized tooth number and modulus can make the gear run more stable, less noise, longer life and less stress. (5) the simplified gear pump spindle is analyzed by modal analysis, and compared with the optimized gear pump spindle. Verify that the optimized gear pump performance is better.
【學(xué)位授予單位】:江蘇科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TH137.51
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