汽車發(fā)動機螺旋傘齒輪熱鍛模具設計
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中圖分類號：U464.13 文獻標識碼：A 文章編號：1003-8639（2025）06-0117-03
Design of HotForging Diesfor Spiral Bevel Gearsof Automotive Engi
WangYanxia，Lian Yingying，MengHua
（Shangqiu Instituteof Technology，School of Mechanical Engineering，Shangqiu 476ooo，China）
【Abstract】Based on the analysisof the designtheoryof spiral bevel gears forautomotive enginesand in combinationwith theactualrequirementsofcloseddieforgingprocesses，thisarticleselects thecompoundclosed die forming scheme.According tothemechanical propertiesof 45stelandthe materialpropertiesof hotworkingdie steel （4Cr5MoSiV1），The working condition parameters such as the preheating of the hot forging die （temperature 250‰ ）， the forging speed of the moving die（ 70mm/s ），and the friction coefficient（O.3）are proposed.The manufacturing of helical bevel gearsisachievedbydesigning thecompounddie structure（floating diecore，inner/outerringsof thetooth die）toincrease fluidityand improve molding accuracy，combining the use of pressure pads to reduce compressive stress and gray irondieseats to lower the manufacturing costofthe die，aplying thecompound ejection structure to solve the problemofdiejammingofforgings，andadoptingthecombineddieandspringreturntosolvetheflashproblem.It provides a reliable design theory and manufacturing basis for its high productivityand high surface quality offorgings.
【Key words】 spiral bevel gear；hot forging dies；closed die forging；compound ejection mechanism
近幾十年來，中國汽車行業(yè)取得了飛躍式的發(fā)展，“一帶一路”政策的實施和新能源汽車的普及，使得我國汽車產(chǎn)業(yè)的發(fā)展更加強勁，未來幾十年，將會迎來一個更加繁榮昌盛的時代。（剩余3502字）