印刷电路板支撑孔用钻产学研切削性能研究的中期报告【摘要】本文针对印刷电路板（PCB）上的支撑孔进行了切削性能研究，采用钻孔方法进行实验，分析了钻头类型、配合间隙和材料切削力等因素对钻孔质量的影响。实验结果表明，钻头类型对钻孔质量影响最为显著，其中银钎钻头效果最佳；配合间隙也是影响钻孔质量的重要因素，合适的配合间隙可有效提高钻孔质量。在加工过程中，切削力的大小与材料强度有关，随着材料硬度的增加，切削力也随之增大。最终，本文提出了一些提高钻孔质量的建议和优化方案。【关键词】印刷电路板；支撑孔；钻孔；切削性能；配合间隙；材料切削力；银钎钻头【Abstract】Thispaperstudiesthecuttingperformanceofthesupportholesonprintedcircuitboards(PCBs)bydrillingmethod,analyzestheinfluenceoffactorssuchasdrilltype,fitclearanceandmaterialcuttingforceonthequalityofthedrilledholes.Theexperimentalresultsshowthatthedrilltypehasthemostsignificantimpactonthequalityofthedrilledholes,amongwhichthesilversolderdrillbithasthebesteffect.Fitclearanceisalsoanimportantfactoraffectingthequalityofthedrilledholes.Appropriatefitclearancecaneffectivelyimprovethequalityofthedrilledholes.Duringtheprocessing,thesizeofcuttingforceisrelatedtothematerialstrength,andthecuttingforceincreaseswiththeincreaseofmaterialhardness.Finally,somesuggestionsandoptimizationschemesareputforwardtoimprovethequalityofthedrilledholes.【Keywords】Printedcircuitboard；supporthole；drilling；cuttingperformance；fitclearance；materialcuttingforce；silversolderdrillbit