Modelbuildingandexperimentalanalysisonimpactforce ofmicro-detonationmachiningofstrikingarcforengineeringceramics
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摘要: 介绍了引弧微爆炸加工过程中冲击力产生的原因,利用单因素实验确定影响冲击力的主要工艺参 数,利用正交实验和回归分析的方法建立了冲击力指数型经验模型,得出工艺参数对冲击力的影响规律。实 验结果表明:工作电流、工作气压和微爆炸发生器喷嘴直径是影响冲击力大小的主要工艺参数,冲击力随着工 作电流的增大而减小,随着工作气压和喷嘴直径的增大而增大,而工作脉宽和工作距离对冲击力大小影响不 显著;建立的冲击力模型与实验结果吻合良好。研究结果可以为引弧微爆炸加工过程的控制提供参考依据。Abstract: Thegenerationcauseofimpactforceduringthemicro-detonationmachiningprocesswasintroduced. Themainprocessingparameterswereconfirmedby meansofsingle-factorexperiments. Basedonaboveparameters,anexponential-typeempiricalmodelforimpactforcewasbuiltbyemployingtheorthogonalexperimentsandtheregressionanalysis. Andtheinfluencesoftheprocessingparametersonimpactforcewereanalyzed. Investigatedresultsdisplaythat:theworkingcurrentandthe workingpressureaswellasthenozzlediameterofthemicro-detonationgeneratorarethemainprocessingparameterstodeterminetheimpactforcemagnitude. Theimpactforcedecreaseswithanincreaseintheworkingcurrentanditincreaseswithincreasesintheworkingpressureandthenozzlediameter. Ontheotherhand,theworkingpulsewidthandtheworkingdistancehaveinsignificantinfluencesontheimpactforcemagnitude. Andtheimpactforcemodelisconsistentwiththeexperimental results.Sotheresearchcanofferanimportantreferencefortheprocesscontrolofmicro-detonation machiningwithstrikingarc.
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