机械5

中文摘要 压板冲压成型模具设计与模具失效分析 本文主要介绍了冲压模具设计过程，冲压模具在实际工业生产中应用广泛。随着当今科技的发展，模具已经越来越多地被应用到工业生产中来。冲压模具可以大大的提高劳动生产效率，减轻工人负担，具有重要的技术进步意义和经济价值。 冲压工艺是一种生产效率很高的、少切屑或无切屑的先进加工方法，在经济和技术方面都有很多的优点。冲压工艺按其变形性质可以分为材料的分离和成形两大类，每一类中包括许多不同的工序. 本次设计的零件为压板冲压，所用材料是20。本分析了该工件的成形工艺，计算了该工件的毛坯形状尺寸及各工序尺寸，并在此基础上确定了合理的冲压工序，分为三道工序分别为工序一落料，工序二折弯，此方案的特点是模具结构简单，制造成本低，操作方便，并且尺寸和精度达到工艺要求，具有良好的性价比。 本设计工序采用曲柄压力机进行冲压，具有生产效率高、维修简单、工作环境整洁等特点。本文模具进行模具结构的分析，主要零件的设计和模具的经济分析，并且详细介绍了设计方法和步骤。 关键词：冲压工艺；模具设计；曲柄压力机；复合模 Title Roulete stampi
ng mold desig
n a
nd mold failure a
nalysis Abstract: Pu
nchi
ng dieswas usedwidely i
n i
ndustrial productio
n applicatio
ns. With today's tech
nology developme
nt, mold has bee
n a
n i
ncreasi
ng use of i
ndustrial productio
n. Pu
nchi
ng die ca
n greatly improve labor productivity a
nd reduce the burde
n of theworkers, further more it has importa
nt tech
nological progress a
nd eco
nomicvalue. Pu
nchi
ng process is a high productio
n efficie
ncy,
no or less process methods, i
n the eco
nomic a
nd tech
nical aspectswhich has ma
ny adva
ntages. The esse
ntial procedure of Pu
nchi
ng are separati
ng a
nd shapi
ng, each category i
ncludes a
number of differe
nt processes. This desig
n compo
ne
nts iswheel plate,the material ofwheel plate is 20. I
n the paper, the moldi
ng tech
nology of the stai
nless steel drawi
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nalyzed, the dime
nsio
ns a
nd shape of the bla
nkwere calculated, the drawi
ng times a
nd dime
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ns of the partwere determi
ned a
nd made sure o
n this fou
ndatio
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nable of hurtle a
nd press thework preface is divided i
nto threeworki
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nk a
nd elo
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ndworki
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nd pressi
ng the raised package, the thirdworki
ng procedure is pierci
ng. the ma
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ng cost is low, operatio
n co
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nce, a
nd the size a
nd accuracies attai
n the craft request, havi
ng the low price a
ndwell quality to compare. The desig
n procedure adopts the cra
nk pressure machi
ne to press the parts. Because it has ma
ny merits, such as produci
ng efficie
ncy high, mai
ntai
ni
ng simple a
ndwork surrou
ndi
ng
neat
ness. I
n this paper,a
nalyzes the combi
natio
n die crafts respectively a
nd gives a detailed i
ntroductio
n to the calculatio
n method a
nd steps. Keywords: Pu
nchi
ng；mold structure；cra
nk；combi
natio
n die 英文摘要 目录 中文摘要I 英文摘要II 前言1 第一章冲压生产工艺概况3 1.1冲压工艺介绍3 1.2冲压的基本工序3 1.3冲压工艺设计的基本内容与步骤4 1.4冲压的概念、特点及应用7 第二章零件的工艺性分析12 2.1零件工艺性分析12 2.2工艺方案确定13 2.3确定工艺方案14 2.3冲裁件的精度与粗糙度14 2.4零件工艺计算14 2.4.1毛坯尺寸计算14 则毛坯展开尺寸D=84mm 14 2.4.2冲裁力的计算15 2.4.3搭边和条料宽度的计算16 第三章模具整体的设计与工艺计算18 3.1搭边18 3.1.1毛坯尺寸计算18 由软件测出工件长度为81.7， 18 3.1.2搭边计算18 3.1.3材料的经济利用19 3.2排样20 第四章模具总体设计21 4.1落料成型模具设计21 4.1.1模具结构21 4.1.2刃口尺寸计算22 4.1.3工序力计算25 4.1.4辅助零件设计26 4.1.5设备选择27 4.2折弯模模具设计27 4.2.1模具结构27 4.2.2自由弯曲的弯曲力28 4.2.3设备选择29 第五章材料失效分析30 5.1失效分析的概念30 5.2冲裁模主要失效形式30 5.3失效分析基本方法31 5.4本次设计中工作部件失效形式分析33 第六章热处理34 6.1热处理的概念34 6.2模具零件整体热处理工序34 6.2.1正火34 6.2.2退火34 6.2.3淬火35 6.2.4回火35 6.2.5调质36 6.3模具零件热处理工艺36 6.4工作部件加工工艺路线39 6.4.1落料模39 6.4.2弯曲模40 第六章结论42 参考文献44 致谢46