本文介绍了普通真空吸具的结构组成,针对使用同一个吸具吸取不同曲率半径外球面工件的设计需求,分析了实现途径,设计了一种采用球头密封结构的可摆动型真空吸盘。在此基础上,对普通真空吸具进行了改进设计,介绍了多用真空吸具的结构组成、工作原理,并介绍了真空吸取力的计算方法,以及关键参数的选用建议。 In this paper, the structure of the common vacuum suction tool is introduced. According to the design requirement of using the same suction tool to suck the spherical workpiece with different radius of curvature, the way of realization is analyzed and a swingable vacuum suction cup with ball seal structure is designed. On this basis, the design of the common vacuum suction tool is improved. The structure and working principle of the vacuum suction tool are introduced. The calculation method of the vacuum suction force and the selection of the key parameters are also introduced.