机械5

摘要 模具工业是国民经济的基础工业，受到政府和企业界的高度重视。发达国家有“模具工业是进入富裕社会的原动力”之说，可见其重视的程度。当今，“模具就是产品质量”，“模具就是经济效益”的观念，已被越来越多的人接受。 正是基于对中国模具发展趋势的认识和对中国模具业发展的信心，我选择了学习模具，选择了汽车后视镜罩注射模具设计做为我的设计。 本设计首先根据给定的实物分析其结构合理性，然后进行测绘，完成实体图和二维图。 其次，根据完成的实体图进行模具设计，在进行模具设计时，根据塑件的形状并结合手册循序渐进的进行模具设计。这次模具设计是对以前所学知识的一次实践。由于我没有实践经验所以很多东西都要依靠手册。包括数据的选取和工艺性的确定。模具设计包括浇注系统、冷却系统及动、定个部分的结构的设计。在设计时要使用到AUTOCAD2004和Pro/ENGINEER，这些计算机辅助设计软件对于提高设计的速度和质量很有帮助，这也是当今模具行业发展的选择。 在近三个月的设计中，为了更好地完成任务，期间还到工厂进行了实习，参观了塑料模具的生产加工过程，这加强了我们的感性认识，更有利于我们完成模具设计。 关键词：注塑模；模具设计；结构设计；Pro/E。 Abstract The mold i
ndustry is the fou
ndatio
n i
ndustry of the
natio
nal eco
nomy, receives highly takes from the gover
nme
nt a
nd the e
nterprise. The developed cou
ntry has the sayi
ng that"the mold i
ndustry is e
nters the afflue
nt society the drivi
ng force", obviously it takes the degree. Now, the idea of"the mold is the quality of product","the mold is the eco
nomic efficie
ncy", has bee
n accepted by more a
nd more ma
ny people. Precisely based o
n the u
ndersta
ndi
ng of Chi
nese mold developme
nt te
nde
ncy a
nd the co
nfide
nce of Chi
nese mold i
ndustry developme
nt co
nfide
nce, I have chose
n studyi
ng the mold desig
n, a
nd chose the mold desig
n of shampoo spray
nozzle to cast as my graduatio
n project. First a
nalyze its structure ratio
nality acts accordi
ng to the material objectwhich assig
ns to i
n this desig
n, the
n carries o
n the mappi
ng, completes the e
ntity chart a
nd the two dime
nsio
nal plot. Next, carries o
n the mold desig
n, accordi
ng to the e
ntity chartwhichwas completed. Whe
n carries o
n the mold desig
ns, accordi
ng to models the shape parallel co
n
nectio
n to gather the ha
ndbook to proceed i
n a
n orderlyway carries o
n the mold desig
n. This mold desig
nwas a practice for the k
nowledge I mastered before. Very ma
ny thi
ngs all must depe
nd upo
n the ha
ndbook because I do
not have the experie
nce, i
ncludi
ng the data selectio
n a
nd tech
nological determi
natio
n. The mold desig
n i
ncludi
ng pours the system, the cooli
ng system a
nd moves, decides a partial structure the desig
n. Usi
ng PRO/ENGINEER2001 a
nd AutoCAD2000 ca
n improve the qua
ntity a
nd efficie
ncy of mold desig
n. This software also is the mold professio
n developme
nt choice
now. I
n order to complete the taskwell,we have arrived the factory a
nd carried o
n the practice duri
ng the three mo
nth’s desig
n,visited the plastic mold productio
n processi
ng process. These stre
ngthe
ned our perceptual k
nowledge,were more adva
ntageous to us to complete the mold desig
n. Keywords: mold desig
n; i
njectio
n mold; co
nfiguratio
n desig
n; Pro/E. 目录 第1章绪论1 1.1塑料模现状及发展趋势1 1.1.1我国塑料模的现状1 1.1.2塑料模的制造特点2 1.1.3塑料模发展趋势2 第2章汽车后视镜罩的结构设计5 2.1塑件分析5 2.2塑件材料的选择5 2.2.1ABS的性能和成型特点5 2.3塑料制件的结构工艺性7 2.3.1脱模斜度7 2.3.2尺寸公差和精度7 2.3.3表面粗糙度7 2.3.4壁厚7 2.3.5圆角7 2.4结构设计方案8 第3章汽车后视镜罩模具设计9 3.1模具方案的论证和选择9 3.2注射机的选择及型腔数目的确定9 3.2.1塑件的质量体积分析及ABS的注射工艺性9 3.2.2型腔数目的确定10 3.2.3注塑机的选择10 3.3分型面的选择12 3.4排气系统的设计12 3.5浇注系统设计12 3.5.1主流道部分设计12 3.5.2冷料穴的设计13 3.5.3分流道设计13 3.5.4浇口设计14 3.5.5定位圈和浇口套的选择14 3.6凹模型腔侧壁厚度与底板厚度的计算15 3.6.1凹模侧壁厚度的计算15 3.6.2底板厚度的计算16 3.7模架的选取16 3.8脱模机构的设计17 3.8．1脱模方案的选择17 3.8.2脱模力的计算17 3.8.3导柱的选择18 3.9温度调节系统的设计19 3.9.1温度调节系统分析19 3.9.2热平衡计算19 3.9.3湍流计算与冷却面积计算20 总结.. 23 致谢24 参考文献25 附件1外文翻译26