钛合金超声椭圆振动辅助车削实验研究

发布时间：2018-04-29 13:51

本文选题：钛合金 + 超声椭圆振动辅助车削　；参考：《振动与冲击》2015年06期

【摘要】：设计钛合金超声椭圆振动辅助车削实验,获得不同超声波电源电压下刀具近似椭圆运动轨迹。分析超声椭圆振动辅助车削切削力变化规律,与普通车削相比超声椭圆振动辅助车削能在较大程度上降低切削力。研究超声椭圆振动辅助车削工件表面粗糙度变化规律,与普通车削相比超声椭圆振动辅助车削工件表面粗度Ra值略增大,Rz值明显降低。分析进给速度对切削力的影响规律,随进给速度增大,普通车削及超声椭圆振动辅助车削切削力均升高。对同一进给速度,与普通车削相比超声椭圆振动辅助车削切削力均降低,且随进给速度增加其降低幅度减小。对比超声椭圆振动辅助车削与普通车削工件表面形貌发现,施加超声椭圆振动后工件表面沿切削速度方向形成有规律振纹。
[Abstract]:The ultrasonic ellipse vibration aided turning experiment of titanium alloy was designed to obtain the approximate elliptical motion trajectory of the tool under different ultrasonic power supply voltage. The variation of cutting force in ultrasonic elliptic vibration assisted turning is analyzed. Compared with ordinary turning, ultrasonic elliptic vibration assisted turning can reduce cutting force to a large extent. The variation rule of workpiece surface roughness in ultrasonic elliptic vibration assisted turning is studied. Compared with ordinary turning, the roughness Ra value of ultrasonic elliptic vibration assisted turning workpiece increases slightly and the Rz value decreases obviously. The influence of feed speed on cutting force is analyzed. With the increase of feed speed, the cutting forces of ordinary turning and ultrasonic elliptical vibration assisted turning are all increased. For the same feed speed, the cutting force of ultrasonic elliptic vibration assisted turning is lower than that of common turning, and the decreasing amplitude decreases with the increase of feed speed. By comparing the surface morphology of the workpiece with ultrasonic elliptical vibration assisted turning and common turning, it is found that the surface of the workpiece with ultrasonic elliptical vibration forms regular vibration along the cutting speed direction.
【作者单位】：北京工业大学机械工程与应用电子技术学院;南昌航空大学航空制造工程学院;秋田县立大学机械智能系统工程系;
【基金】：国家科技重大专项资助项目(2012ZX04010-011)
【分类号】：TG51;TG663

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