介绍虚拟设计(VD)基本理论及三维建模技术在装载机工作装置设计中的应用。借助三维设计软件SolidWorks进行装载机工作装置设计的虚拟设计,不仅可以真实地反映装载机工作装置设计的几何形状,还能反映各部件的空间位置,有效地检测工作装置各部件之间是否发生干涉与碰撞,通过动力学分析检验工作装置作业过程的合理性和正确性。利用计算机辅助设计技术模拟整个产品的开发过程,在计算机中进行产品设计、分析、加工、装配以及运动模拟等过程,不仅可以省去制造样机进行反复试验、修改等环节,而且也大大缩短了产品的开发周期,降低了产品开发设计成本,同时也为今后系列化新产品的开发设计奠定了基础模型。 This paper introduces the basic theory of virtual design (VD) and the application of 3D modeling technology in the design of loader working device. The virtual design of the working device design of the loader with SolidWorks can not only truly reflect the geometry of the working device of the loader, but also reflect the spatial position of each component and effectively detect the interference between various components of the working device And collisions, through the dynamic analysis to verify the rationale and correctness of the working process of the working device. The use of computer-aided design technology to simulate the entire product development process in the computer product design, analysis, processing, assembly and motion simulation process, not only eliminates the need for prototype production and testing, modification and other links, but also greatly shortened the product Of the development cycle, reducing product development and design costs, but also for the future series of new product development and design laid the foundation model.