电机风叶压铸模设计

模具工业2001.No.1总23945武汉中人汽车零部件厂(湖北武汉430073)韩耀东[]对薄壁多筋的铸件进行了工艺分析,设计了一种特殊形状的内浇口,并经过理论计算,确定了压铸机床的型号模具设计采用了合理的镶件结构,解决了滑块在抽芯过程中的强度不足以及模架刚性不足等问题在二次分型机构的作用下,模具工作自如电机风叶压铸模筋多壁薄中心浇口抽芯滑块二次分型[Abstract]Afteratechnologicalanalysisofthethin-wallribbeddiecastingparts,aninnergateofspecialshapewasdesigned.Throughtheoreticalcalculations,thetypeofthediecastingmachinetoolwasdetermined.Thedesignofthedieadoptedreasonableinsertstructure,whichsolvedtheproblemoftheslideshortofstrengthandthediesetsshortofrigidityinthecore-pullingpro-cess.Undertheactionofthetwice-partingmechanism,thedieworkswell.Keywordsmotorblowerfans,diecastingdie,thin-wallandmulti-rib,centergate,corepulling,slide,twiceparting111(1),ZL105,140mm63mm,,,,,,,,,,,,,,(2),,2:2000810,,,模具工业2001.No.1总23946,,22.1,,,,,3a3b31.2.3a,,,,,,,,,,,,,,,140mm22mm,12mm,(3b):(1),,,,(2),,,(3),,,(4),,(5),,2.20.14kg,:F=Q/vTF,cm2Q,g,=2.4g/cm2v,:v=18.5m/sT,:T=0.081sF=0.1410002.418.51000.081=0.39cm2:7mm,,,,4,34,2~3mm,,3mm2.3,,,,,,:d400P模具工业2001.No.1总23947d,mmP,,kN,=24MPa:P=ALP1(cos-sin)P,kNA,cmL,cmP1,P1=12MPa,0.25,30P=(72+1.13.9+13.61)3.14100(0.25cos0.5-sin0.5)=24.13kNd40024.133.1424=11.3mm:11.3mm,,,7mm,33.1PP=FPF=(1.3~1.5)F1F,mm2P,50MPaF1,mm2P=1.3(14/2)23.14500=1000kN3.2P=FPtanF,mm2P,50MPaP=27.50.8500tan30=34.5kN3.3P=K(P+P)K,1.2,P=1240kN,J1134,,,40mm,,,,54.14.1.1动定模结构,56,46,94.1.2抽芯机构,,,2(6),3,,32,,4.1.3模架1516,,2,,,2,,,1517,16,,,,,8,15mm4.25,,,,68mm10,611,5(5),,,,32,4121516,模具工业2001.No.1总2394851.2.3.46.5.7.8.9.1011.12.13.14.1516.17.1819.20.21.22.23.24.25.26.27.6,,1819(),,,,,,25216,,,,,(上接36页)3.3.3充模速率,,,,3.3.4注射压力,,