机械5

电子屏蔽罩冲压工艺与模具设计 摘要 随着模具制造的技能化逐步向科学化发展，逐渐由以前手动方式发展为利用软件等高科技方式来辅助设计的完成。冷冲模是其中的一种。 本次设计是在模具专业理论教学之后进行的实践性教学环节。是对所学知识的一次总检验，是走向工作岗位前的一次实战演习。其目的是，综合运用所学课程的理论和实践知识,设计出电子屏蔽罩的一副完整的落料拉伸模具。巩固和扩充模具专业课程所学内容，掌握模具设计与制造的方法、步骤和相关技术规范。熟练查阅相关技术资料。掌握模具设计与制造的基本技能，如制件工艺性分析、模具工艺方案论证、工艺计算、加工设备选定、制造工艺、收集和查阅设计资料，绘图及编写设计技术文件等。 冲压工艺与模具设计应结合工厂的设备、人员等实际情况，从零件的质量、生产效率、生产成本、劳动强度、环境的保护以及生产的安全性各个方面综合考虑，选择技术先进、经济合理、使用安全可靠的工艺方案和模具，以使冲压件的生产在保证达到设计图样上的各项技术要求，尽可能降低冲压的工艺成本和保证安全生产。 关键词： 电子屏蔽罩、落料拉伸、工艺计算、加工设备选定、制造工艺 Abstract： With the developme
nt of the tech
nology of mold ma
nufacturi
ng to scie
ntific developme
nt, it has gradually developed from the previous ma
nual mode to the use of software a
nd other high-tech methods to complete the desig
n. Cold stampi
ng die is o
ne of them. This desig
n is a practical teachi
ng li
nk after the mold professio
nal theory teachi
ng. It is a ge
neral test of the k
nowledge lear
ned a
nd a practical exercise before goi
ng towork. The purpose is to desig
n a complete bla
nki
ng drawi
ng die for the electro
nic shieldi
ng case by usi
ng the theory a
nd practice k
nowledge of the course. Co
nsolidate a
nd expa
nd the co
nte
nts of mold professio
nal courses, master the methods, steps a
nd releva
nt tech
nical specificatio
ns of mold desig
n a
nd ma
nufacturi
ng. Skilled access to releva
nt tech
nical data. Master the basic skills of mold desig
n a
nd ma
nufacturi
ng, such as product process a
nalysis, mold process pla
n demo
nstratio
n, process calculatio
n, processi
ng equipme
nt selectio
n, ma
nufacturi
ng process, collectio
n a
nd access to desig
n data, drawi
ng a
nd preparatio
n of desig
n tech
nical docume
nts. The stampi
ng process a
nd die desig
n should be combi
nedwith the actual situatio
n of equipme
nt a
nd perso
n
nel i
n the factory, a
nd comprehe
nsively co
nsider the quality, productio
n efficie
ncy, productio
n cost, labor i
nte
nsity, e
nviro
nme
ntal protectio
n a
nd productio
n safety of parts, a
nd select the process scheme a
nd diewith adva
nced tech
nology, eco
nomic ratio
nality a
nd safe a
nd reliable use, so as to e
nsure that the productio
n of stampi
ng parts ca
n meet the requireme
nts of the desig
n drawi
ngs Various tech
nical requireme
nts, as far as possible to reduce stampi
ng process costs a
nd e
nsure safety i
n productio
n. keyword: Electro
nic shield cover, bla
nki
ng drawi
ng, process calculatio
n, processi
ng equipme
nt selectio
n, ma
nufacturi
ng process 目录 摘要3 引言5 第一章、冲裁件的工艺性分析7 1.1.冲裁件的结构工艺性8 1.1.1.冲裁件的形状8 1.1.2.冲裁件的尺寸精度8 第二章、制件冲压工艺方案的确定9 2.1.冲压工序的组合9 2.2.冲压顺序的安排10 第三章、制件排样图的设计及材料利用率的计算11 3.1.展开尺寸的计算11 3.2.制件排样图的设计21 3.2.1.搭边与料宽21 3.3.材料利用率的计算22 第四章、确定总冲压力和选用压力机及计算压力中心23 4.1.落料拉深模压力计算23 4.1.1.落料力计算23 4.1.2.卸料力的计算23 4.1.3.拉深力计算23 4.1.4.压边力计算24 4.2.压力中心的计算24 4.3.压力机的选用24 第五章、凸、凹模刃口尺寸计算26 5.1.拉深模尺寸计算26 5.2.落料凸、凹模刃口尺寸27 5.2.1.计算原则27 第六章、模具整体结构形式设计29 第七章、模具零件的结构设计31 7.1.落料凹模的设计31 7.2.拉深凸模的设计31 7.3.其他零件参数设计32 7.4.标准模架选择33 设计小结34 参考文献35