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为研究超声振动辅助铣磨加工对碳纤维增强树脂基复合材料(CFRP)切削力和表面质量的影响,建立了超声振动辅助铣磨加工的切削力模型,进行了磨粒运动轨迹、刀具锋利化效果及单颗磨粒切厚的理论分析及试验验证。结果表明:超声振动辅助铣磨加工与传统铣磨加工相比切削力更小、加工质量更好。当每齿进给量从4μm/z增加到8μm/z时,超声振动辅助铣磨加工的切削力增加了44.7%,小于传统铣磨加工的84.9%;同样,当切深从200μm增加到400μm时,超声振动辅助铣磨加工的切削力增加了187.8%,小于传统铣磨加工的209%;在相同加工参数下,超声振动辅助铣磨加工的工件表面与传统铣磨加工相比,树脂涂覆、表面凹坑和纤维拔出量明显减少。
In order to study the influence of ultrasonic vibration assisted milling on the cutting force and surface quality of carbon fiber reinforced resin matrix composites (CFRP), the cutting force model of ultrasonic vibration assisted milling was established and the trajectory of abrasive particles and the tool sharpness And the theoretical analysis and experimental verification of single abrasive grain thickness. The results show that the ultrasonic vibration assisted milling process has smaller cutting force and better machining quality than the traditional milling process. When the feed per tooth increased from 4μm / z to 8μm / z, the cutting force of ultrasonic vibration assisted milling increased by 44.7%, which was less than 84.9% of the conventional milling. Similarly, when the depth of cut increased from 200μm to 400μm , The cutting force of ultrasonic vibration assisted milling increases by 187.8%, which is less than 209% of that of conventional milling. Under the same processing parameters, the surface of the workpiece assisted with ultrasonic vibration assisted milling is better than the conventional milling Cover, surface pits and fiber withdrawal significantly reduced.