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在自动机和半自动机上常用的间歇转位机构是槽轮机构,由于它的运动性能差,分度数一般只能在4～8范围内,动停比不能随意变化,这就限制了机器速度的提高以及整机结构的简化。圆柱式分度转位凸轮机构用于高速多工位的场合,它的运动规律和动停比选择的任意性是槽轮机构无法比拟的,而且结构简单,兼有分度,定位的双重功能和足够高的刚度。通过笔者主持研制的JSJ005型多功能液体罐装封盖机的应帮与实践证明,圆柱式分度转位凸轮机构作为自动包装机的典型转位机构是较为理想的。现将其原理及设计方法介绍下。
Intermittent indexing mechanism commonly used in automatic machine and semi-automatic machine is a sheave mechanism. Because of its poor performance, the division number can only be in the range of 4 ~ 8 generally. The dynamic stop ratio can not be changed freely, which limits the speed of the machine Improve and simplify the whole structure. Cylindrical indexing indexing cam mechanism for high-speed multi-station occasions, its movement law and the choice of arbitrability is arbitrarily elected pulley mechanism, and the simple structure, both indexing, positioning dual functions And high enough rigidity. The JSJ005 multifunctional liquid can capping machine developed by the author should help and practice that the cylindrical indexing index cam mechanism is ideal as a typical indexing mechanism of automatic packaging machine. Now its principle and design method introduced.