摘要
旋转油缸是一种常用的液压装置,能把活塞的直线运动转变成旋转运动并做功,目前广泛地应用于各行各业中,根据旋转油缸的应用场合不一样,对旋转油缸的结构和性能要求也有所不同。在旋转油缸的传统设计过程中,设计人员主要根据自己以前的经验,结合前人的经验公式和设计参数来进行产品的具体设计,这样很难实现旋转油缸的优化设计。为了降低设计成本,缩短设计周期,本文把虚拟样机技术应用于旋转油缸的设计和研究中。
本文借助于虚拟样机技术,结合Pro/E的三维实体造型和运动学仿真功能、ADAMS的动力学仿真功能以及ANSYS的静力学分析功能,对旋转油缸进行了设计与研究。首先利用Pro/E软件实现了360度双螺旋副旋转油缸的三维物理建模和虚拟装配,并对装配模型进行了干涉检查和运动学分析。结合装配实体模型,建立了360度双螺旋副旋转油缸的多体动力学模型,并进行了动力学分析,仿真结果与理论计算结论基本一致,验证了虚拟样机模型的合理性和正确性。研究了不同牙形角参数时输出螺杆的旋转特性和轴承受力特性。建立了有限元静力学分析模型,研究了360度双螺旋副旋转油缸的关键零件的应力、应变特性,为油缸的结构设计和优化提供了可靠依据。最后搭建了360度双螺旋副旋转油缸实验平台,进行了实验验证研究,验证了研究结论的正确性,达到了预期的研究目标。本文中所使用的设计思维和方法对启迪其它产品的开发研究也有一定的意义。
As one of hydraulic devices in common use, Rotating hydraulic cylinder can translate linear motion of the piston into rotary movement and do work, it has been widely used in all walks of life, there are different requirements of the structure form and performance for different application situations, it is difficult to achieve optimal design of rotating hydraulic cylinder by using traditional design method, for in the traditional design, the designer primarily on the basis of past design experience, combined with a large number of empirical formula and the design parameters for the specific design. This paper applies the Virtual Prototyping Technology to design the rotating hydraulic cylinder for solving the issues in the traditional design, which is longer design cycle and higher cost.
Based on the Virtual Prototyping Technology, In this paper studies the optimal design of the rotating hydraulic cylinder. With the CAD/ CAE/CAM feature-based modeling tool of the Pro/E(Pro/ENGINEER), mechanical dynamics simulation software, ADAMS (Automatic Dynamic Analysis Mechanical System) and the finite element software of ANSYS. First of all, the three-dimensional model of the rotating hydraulic cylinder is built up and accomplished its virtual assembling with the software of Pro/E, validating the correctness of the model by doing kinematics analysis. The multibody dynamics model of 360-degrees of double screw pair of rotating hydraulic cylinder is built up by Utilizing the ADAMS software and make a research, the result of simulation is similar with calculation in the theory. Verify the correctness of the virtual prototype. Study the output screw rotation and bearing load characteristics with different Toothed-shaped angle. based the boundary condition, the FEA static analysis of the key parts of the rotating hydraulic cylinder, is made with the FEA software-ANSYS. These analysis provide the theory for the structural design and optimization. In the end, the rotating hydraulic cylinder experiment is carried out for verifying the correctness of design and reaching the design goal. The method and theory used in this paper can also be used in other products design and research.
引文
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