基于旋转超声加工的GFRP罐体侧壁开孔系统设计

Design of GFRP Tank Sidewall Opening System Based on Rotary Ultrasonic Machining

针对传统的玻璃钢罐体人工开孔方式存在开孔效率低、定位精度低差、开孔质量低等问题,设计一种针对GFRP罐体侧壁开孔的旋转超声加工系统。系统包含工件的输送、装夹、旋转超声主轴、进给驱动和刀具位置调整等部分,重点介绍旋转超声主轴和进给系统。运用有限元法设计带有开孔器的变幅杆,获得满足谐振频率的变幅杆结构,并通过有限元软件对带有开孔器的变幅杆进行谐响应分析,发现刀具振动方向以轴向为主且振动幅度满足要求。

Aiming at the problems of low opening efficiency,low positioning accuracy and low opening quality in the large diameter manu-al opening method of traditional FRP tank,a rotary ultrasonic processing system for the sidewall opening of GFRP tank was designed.The sys-tem included the parts of the workpiece transport,clamping,feed drive and tool position adjustment.And the ultrasonic vibration rotary axis and feed system were highlighted.The finite element method was used to design the horn with the hole opener,and the horn structure satisfying the resonant frequency was obtained.The finite element software was used to analyze the harmonic response of the horn with the hole opener.The axial direction is dominant and the vibration amplitude meets the requirements.