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实验采用的水雾介质为超声水雾,通过大气、乳化液和超声水雾介质中往复走丝电火花线切割精加工对比实验,对超声水雾介质中往复走丝线切割精加工特性进行了研究,针对表面粗糙度、切割速度、直线度、表面形貌和火花率等指标进行了系统的分析,实验结果表明,超声水雾介质中二次切割加工的表面质量介于气中与液中之间,而优于液中加工。提出了在精加工阶段采用气体或水雾介质的电火花线切割多次切割工艺,经实验验证,传统乳化液中三次切割获得的表面粗糙度为2.81μm,而采用乳化液-超声水雾-大气组合的三次切割新工艺方法获得的表面粗糙度为2.42μm,与介质均采用乳化液的传统三次切割工艺相比,该新工艺方法将表面粗糙度值降低了0.39μm,能有效改善加工表面质量。
The water mist medium used in the experiment was ultrasonic water mist. The reciprocating wire EDM cutting precision machining comparison experiment in the atmosphere, the emulsion and the ultrasonic water mist medium was carried out to study the reciprocating wire cutting finishing characteristics in the ultrasonic water mist medium , The surface roughness, cutting speed, straightness, surface morphology and spark rate and other indicators were systematically analyzed. The experimental results show that the surface quality of secondary cutting in ultrasonic water mist medium is between gas and liquid Between, and better than liquid processing. In the finishing stage, the gas-phase or water-mist medium was used to cut the multi-cutting process by WEDM. The surface roughness of the traditional emulsion obtained after three cuts was 2.81μm. The emulsion- Atmospheric combination of the three cutting new process method to obtain a surface roughness of 2.42μm, compared with the media are using the traditional three-cutting emulsion process, the new process reduces the surface roughness of 0.39μm, can effectively improve the processing surface quality.