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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。
ATC device as a key part of the machining center, its structure and drive a direct impact on tool change time and processing efficiency. Based on the research of the structure and principle of the cam ATC device, based on the theory of arc cam mechanism, the structure of double arc cam linkage is designed to realize the ATC tool changing operation. In this paper, the starting point of indexing of the rotary arc cam is taken as the characteristic position, a motion cycle diagram that meets the tool changing action is designed, a digital prototype of the double arc cam ATC device is established by Pro / E, and a virtual prototype of the ATC device is established based on RecurDyn. Simulate the real movement process of the device, carry on the dynamic simulation analysis, output the movement characteristic curve, in order to verify the correctness of the design result.