某弹内膛减振刀杆设计及振动特性分析

Design and Vibration Characteristic Analysis of Shock Absorber Arbor for Projectile Bore

针对某弹在内膛加工过程中刀杆振动过大导致弹体内膛加工质量下降的问题,对原有刀杆结构进行重新设计,采用理论分析和有限元仿真相结合的方式对刀杆工作时的受力情况和振动特性进行了分析。结果表明:刀杆的受力和变形都很小,振动频率较大,不易产生振动。说明刀杆结构设计合理,能够满足某弹内膛加工的要求。

Aiming at the problem of excessive vibration of the tool bar during the machining of the inner bore of a projectile,the quality of the inner bore of the projectile was reduced,and the original tool bar structure was redesigned.A combination of theoretical analysis and finite element simulation is used to analyze the force and vibration characteristics of the tool bar when it is working.The results show that the force and deformation of the cutter bar are very small,the vibration frequency is high,and it is not easy to produce vibration.It shows that the cutter bar structure is reasonable in design and can meet the processing requirements of a certain projectile inner bore.