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1、鍛壓技術(shù)2006年第1期雙封閉球頭筒縮口工藝與模具設(shè)計(jì)3李彥蓉,袁光明(山東理工大學(xué)機(jī)械工程學(xué)院,山東淄博255049)摘要:介紹了縮口工藝的概念、特點(diǎn)、主要工藝缺陷及影響縮口變形程度的因素。分析了雙封閉球頭筒零件加工的工藝性,經(jīng)過比較確定用縮口工藝來完成該件的加工制造。在此基礎(chǔ)上,對(duì)所給零件的縮口工藝計(jì)算的內(nèi)容和步驟做了詳盡的介紹,給出縮口工序的次數(shù)、各次縮口工序的變形程度、毛坯的高度、工序件的尺寸并進(jìn)行了壓力機(jī)的選擇。結(jié)合零件的試制,進(jìn)行縮口模具的結(jié)構(gòu)設(shè)計(jì),并對(duì)模具的工作原理、模具主要零件相互關(guān)系及其作用做了詳細(xì)的論述。通過對(duì)試件的質(zhì)量分析,說明了縮口工藝計(jì)算
2、和模具結(jié)構(gòu)設(shè)計(jì)的結(jié)果能滿足所給零件的加工工藝,試件基本達(dá)到了設(shè)計(jì)的要求。最后還指出了縮口工藝中常被忽略的變形對(duì)工藝過程的影響以及改進(jìn)這一問題還需要進(jìn)行的研究。關(guān)鍵詞:雙封閉球頭筒;縮口工藝;變形程度;縮口模具中圖分類號(hào):TG38512文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):100023940(2006)0120048203Processanddiedesignofdouble2endedspherical2toptubenarrowing2mouthLIYan2rong,YUANGuang2ming(SchoolofMechanicalEngineering,ShandongUn
3、iversityofTechnology,ZiboShandong255049,China)Abstract:Thearticleintroducestheconcept,characteristics,maintechnicallimitationofthenarrowing2mouthprocessandaffectingfactorsofdeformationdegree,analysesthemanufacturabilityofthedouble2endedspherical2toppartsprocessandconfirmstousetheshrin
4、kagecavitytechnologytofinishtheproductionofthepartbycomparison.Onthis,thearticlemakesadetailintroductionintheaspectsofcontentandprocessaboutthenarrowing2mouthprocessofthegivenparts,providestheproceduresequence,deformationdegreeofeveryprocedure,theheightofthebilletandthepartsizeofevery
5、procedureandintroducestheselectingmethodsofthepress.Integratedwiththetrial2produceofthepart,thearticlediscussesthestructuredesign,theoperatingprinciple,theinterrelationandfunctionsofthemainpartsofthedie.Theanalysisofthetest2piecequalityshowsthattheresultofthenarrowing2mouthprocessandt
6、hediestructuredesigncanmeettheprocessingtechnicalrequirementsofthegivenparts,andthetest2piececancompletelymeetthedesignrequirements.Atlast,thearticlepointsouttheprocessimpactbroughtbydeformation,whichisoftenignoredinthenarrowing2mouthprocessandthefurtherresearchforimprovingthisproblem
7、.Keywords:double2endedspherical2toptube;narrowing2mouthprocess;degreeofdeformation;dieofnarrowing2mouthprocess程度主要受失穩(wěn)條件的限制。縮口變形程度的大小1引言與材料的種類、材料的厚度、縮口模具的結(jié)構(gòu)形式縮口是一種冷沖壓加工工藝,它是將預(yù)先制備以及模具工作零件表面的質(zhì)量有關(guān)。當(dāng)縮口工件要好的圓筒形或管狀坯件,通過縮口模具將其口部縮求的變形程度超過了既定條件下材料的變形程度時(shí),小成所需形狀的一種成形工藝。縮口工藝的特點(diǎn)是則需采用多道縮口工序才能成形。毛坯的變
8、形部分受切
