超声磁力复合研磨钛合金锥孔的试验研究

发布时间：2019-02-19 13:23

【摘要】：为了提高钛合金锥孔的研磨质量和研磨效率,提出了采用超声波振动辅助磁力研磨的复合加工方案。加工时,磨粒在磁场束缚下切削锥孔表面,并对其进行不断撞击,且因为磁场力、超声振动力和离心力等综合影响的原因,磨粒的切削轨迹呈现明显的多向性。针对钛合金锥孔,与传统磁力研磨法进行试验对比,并分析研磨后试件的材料去除量、表面粗糙度和表面形貌等来验证超声磁力复合研磨的效果。结果表明:超声磁力复合研磨加工效率得到提高;锥孔的材料去除量增加至1.6倍;研磨后锥孔平均表面粗糙度由原始的R_a1.23μm降至R_a0.25μm,下降率是传统工艺的1.3倍;试件表面的微波峰、凹坑和加工纹理均被去除,锥孔表面质量得到显著提高,且试件形状精度得到改善。
[Abstract]:In order to improve the grinding quality and grinding efficiency of titanium alloy conical holes, a compound processing scheme of ultrasonic vibration assisted magnetic lapping was put forward. In the process of machining, the abrasive particles cut the surface of the conical holes under the restraint of magnetic field and impinged on them continuously. Because of the combined effect of magnetic field force, ultrasonic vibration force and centrifugal force, the cutting path of abrasive particles showed obvious multi-direction. Compared with the traditional magnetic lapping method, the material removal, surface roughness and surface morphology of the specimen after grinding were analyzed to verify the effect of ultrasonic magnetic composite grinding. The results show that the efficiency of ultrasonic magnetic composite grinding is improved and the material removal of conical holes is increased to 1.6 times. After grinding, the average surface roughness of the cone hole is reduced from the original R_a1.23 渭 m to the R_a0.25 渭 m, and the decrease rate is 1.3 times of that of the traditional technology. Microwave peaks, pits and machined textures on the surface of the specimen were removed, the surface quality of the conical hole was improved significantly, and the shape accuracy of the specimen was improved.
【作者单位】：辽宁科技大学应用技术学院;辽宁科技大学机械工程及自动化学院;
【基金】：国家自然科学基金资助项目(51105187)
【分类号】：TG580.68

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