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为促进超声振动拉丝的实际应用,针对不同施振方式的作用效果,建立了一套正交复合超声振动拉丝实验系统,系统由超声波驱动器、超声振动系统、拉丝模和拉丝机等组成.利用有限元法对正交复合超声振动拉丝进行仿真模拟,分析超声振动拉丝的加工机理.通过对铜丝的一系列拉拔实验,考察了在实际拉丝加工过程中,纵向振动、横向振动和正交复合超声振动对拉拔力和丝表面质量的影响.实验结果表明:当振幅达到一定值后,正交复合超声振动的作用效果最好,能使拉丝机的张力调节周期有效延长3倍以上,减少了丝材的不均匀变形,使拉丝更趋于稳定;当拉拔速度为980 mm.s-1时,可使拉拔力减小近10%,改善了丝材表面质量.
In order to promote the practical application of ultrasonic vibration wire drawing, a set of orthogonal composite ultrasonic vibration wire drawing experimental system was established according to the effect of different vibration modes. The system consists of ultrasonic driver, ultrasonic vibration system, drawing die and wire drawing machine, Element method to simulate the orthogonal composite ultrasonic vibration wire drawing and analyze the machining mechanism of the ultrasonic vibration wire drawing.Through a series of drawing experiments on the copper wire, the influence of longitudinal vibration, transverse vibration and orthogonal compound Ultrasonic vibration on the drawing force and the surface quality of wire.The experimental results show that when the amplitude reaches a certain value, the effect of orthogonal composite ultrasonic vibration is the best, which can effectively extend the tension adjustment period of wire drawing machine by more than 3 times and reduce The uneven deformation of the wire makes the drawing more stable. When the drawing speed is 980 mm.s-1, the pulling force can be reduced by nearly 10%, which improves the surface quality of the wire.