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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >The effects of elliptical ultrasonic vibration in surface machining of CFRP composites using rotary ultrasonic machining
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The effects of elliptical ultrasonic vibration in surface machining of CFRP composites using rotary ultrasonic machining

机译：旋转超声机加工CFRP复合材料表面加工椭圆超声振动的影响

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摘要

Compared with conventional surface grinding (CSG) process, surface machining of carbon fiber-reinforced plastic (CFRP) composites using rotary ultrasonic machining (RUM) with vertical ultrasonic vibration generates smaller cutting forces because of improved machining performance and more damages to the machined CFRP surface due to the intermittent knocking induced by vertical ultrasonic vibration. It is reported that surface quality can be improved when the ultrasonic vibration is parallel to the feeding direction. In addition, elliptical ultrasonic vibration can be formed by the combination of horizontal and vertical ultrasonic vibrations. However, the effects of elliptical ultrasonic vibration in RUM surface machining of CFRPs are still unknown. This paper will study the influences of elliptical ultrasonic vibration on the machining performance and machined surface quality in RUM surface machining of CFRPs. The comparisons of output variables (including cutting forces, surface roughness, and machined surface topography) between RUM surface machining with elliptical ultrasonic vibration and the CSG process as well as RUM surface machining with vertical ultrasonic vibration will be conducted under different levels of input variables (including depth of cut, feedrate, and tool rotation speed). The abrasive-grain trajectory and the tool-workpiece contacting modes in these three machining processes are analyzed. It is found that RUM surface machining with elliptical ultrasonic vibration produced smallest feeding-direction cutting force, smallest vertical-direction cutting force, best morphology of machined surface, and smallest surface roughness among these three kinds of machining processes.
机译：与传统的表面磨削（CSG）过程中，碳纤维增强塑料（CFRP）的表面加工复合材料用旋转超声机械加工（RUM）具有垂直的超声波振动产生由于改进的加工性能和更损害加工CFRP表面更小的切割力相比由于垂直超声波振动引起的间歇性爆震。据报道，当超声波振动平行于进料方向时，可以提高表面质量。此外，椭圆形超声波振动可以通过水平和垂直超声振动的组合形成。然而，椭圆形超声振动在CFRP的朗姆酒表面加工中的影响仍然未知。本文将研究椭圆形超声波振动对CFRP朗克表面加工加工性能及加工表面质量的影响。输出变量（包括切削力，表面粗糙度和加工表面形貌）RUM表面加工之间具有椭圆超声波振动和CSG过程以及与垂直超声波振动RUM表面加工的比较将在不同电平的输入变量（可以进行包括切割深度，进给率和刀具旋转速度）。分析了这三种加工过程中的研磨颗粒轨迹和工具 - 工件接触模式。结果发现，钢筋表面加工椭圆形超声波振动产生最小的馈线切割力，最小的垂直方向切割力，最佳加工表面的形态，以及这三种加工过程中最小的表面粗糙度。

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