基于RecurDyn的双弧面凸轮式ATC装置的设计及仿真分析

Design and Simulation Analysis for Double Globoidal Cam-type ATC Device based on RecurDyn

ATC装置作为加工中心的关键零部件,其结构及驱动方式直接影响换刀时间和加工效率。通过对凸轮式ATC装置的结构及原理进行研究,以弧面凸轮机构理论为基础,设计双弧面凸轮联动的结构实现ATC装置的换刀动作。研究以回转弧面凸轮的分度起点作为特征位置,设计满足换刀动作的运动循环图,利用Pro/E建立双弧面凸轮式ATC装置的数字化样机,最后基于RecurDyn建立ATC装置的虚拟样机,模拟装置真实的运动过程,进行动力学仿真分析,输出运动特性曲线,以验证设计结果的正确性。

As the key component of machining center, the structure and driving mode of ATC device directly influence the time and efficiency of tool changing. Starting from the structure and principle of the cam - type ATC device, based on the theory of globoidal cam mechanism, the double globoidal cam linkage structure is designed to achieve the tool change action for ATC device. Taking the starting point of rotary globoidal cam indexing as the feature position and the motion cycle chart is designed to meet the k tool changing action. And then the digital mock - up of the double globoidal cam - type ATC device are obtained in Pro/Engineer. At last, the virtual prototype of the ATC device is built by using RecurDyn with dynamic simulation and analysis, the real motion process of ATC device is simulated and the motion parameter curve is output, the results show that the accuracy of the design results are verified.