To study the effect of ultrasonic vibration on the assembly and pressing force of fan disk blades,an assembly method combining ultrasonic vibration and pressing is proposed.And the control variable meth-od is used to study the influence of four factors,namely press installation form,press installation displace-ment,press installation speed,and vibration amplitude,on the assembly press installation force of adjacent blades of the fan disk group.Research has shown that superimposed ultrasonic vibration can effectively re-duce the pressure installation force of adjacent blade assemblies in fan disk groups;The larger the pressing displacement,the greater the required pressing force for assembly.Superimposing a certain amplitude of ul-trasonic vibration can effectively reduce the difference in pressing force between different pressing displace-ments;Regardless of whether ultrasonic vibration is superimposed or not,within a certain range of pressing speed,the pressing speed basically does not affect the pressing force;Within a certain range of vibration amplitude,as the superimposed vibration amplitude increases,the effect of reducing the pressing force be-comes better.When reaching a certain vibration amplitude,the best effect of reducing the pressing force can be achieved,which can reduce the pressing force by 75%.Beyond this vibration amplitude,the effect of re-ducing the pressing force tends to stabilize or even weaken.
关键词
风扇盘组/叶片装配/压装力/超声振动
Key words
fan disk group/blade assembly/pressing force/ultrasonic vibration
维普
万方数据