Optimization Design and Analysis of Rotary Indexing Mechanism of Tool Magazine in Machining Center

摘要

In order to achieve a faster rotation speed and lower impact load of the machining center armless type tool magazine during the rotary indexing process, the rotation and positioning characteristics of the rotary indexing mechanism were studied. The structural design of the Geneva mechanism used to drive the tool magazine was completed, and the optimized design scheme of the new double-pins without the locking arc Geneva mechanism to replace the single-pin locking arc Geneva mechanism was finally determined. The tTwo schemes were modeled and compared by kinematics based on NX and ADAMS. The results of kinematics contrast simulation show that the double-pins Geneva mechanism structure without locking arc has the advantages of being faster in rotational speed, smaller in impact load and more stable running condition, so that the speed of machine tool change while greatly reducing device wear and improve the durability of the device.