机械5

名爵汽车底盘连接片正装复合模具设计 摘要 随着中国经济持续增长，国内模具行业的发展速度喜人，我国冲压模具发展已逐步接近世界先进水平。本课题研究的是名爵汽车底盘连接片正装复合模设计。因模具为单件小批量生产，且模具应保证冲压产品的尺寸精度和产品质量，模具的设计与制造应充分考虑模具的设计能否满足工件的工艺性设计，能否加工出合格的零件，能否使零件具有较高的使用寿命。该模具有两个工位，分别进行冲孔和落料。根据零件图，进行冲裁工艺性分析并选择最佳方案，完成排样设计，计算材料利用率、工序力，选择合适的压力机，各零件尺寸的选用和计算等。由凹模零件图进行加工工艺的编制，用UG软件画出凹模实体，并画出毛坯，再进行加工。因凹模刃口粗糙度较小，故在加工完后，需在磨床上进行打磨。最后，对凹模进行数控编程。 关键词：正装复合模；零部件选用；刃口尺寸计算；UG制图；编程 ABSTRACT With the co
nti
nuous growth of Chi
na's eco
nomy, the developme
nt speed of the domestic mold i
ndustry is e
ncouragi
ng, Chi
na's stampi
ng mold developme
nt has gradually approached theworld's adva
nced level.The research of this topic is the chassis co
n
nectio
n piece formal assembly composite die desig
n.Because the mold for a small batch productio
n, a
nd the mold should e
nsure the size of the stampi
ng product precisio
n a
nd product quality, the mold desig
n a
nd ma
nufacturi
ng should fully co
nsiderwhether the mold desig
n ca
n meet theworkpiece tech
nology desig
n, ca
n process qualified parts, ca
n make the parts have a high service life.The mould has two statio
ns for pu
nchi
ng a
nd bla
nki
ng respectively.Accordi
ng to the part drawi
ng, carry out bla
nki
ng process a
nalysis a
nd select the best scheme, complete the layout desig
n, calculate the material utilizatio
n rate, process force, select the appropriate press, the selectio
n a
nd calculatio
n of the size of each part, etc.Accordi
ng to the drawi
ng of die parts for the preparatio
n of processi
ng tech
nology, usi
ng UG software to draw the die e
ntity, a
nd draw the bla
nk, a
nd the
n processi
ng.Due to the small rough
ness of the cutti
ng edge, it is
necessary to gri
nd o
n the gri
nder after processi
ng.Fi
nally,
numerical co
ntrol programmi
ng is do
ne to the die. Keywords：Formal compou
nd die；Selectio
n of parts a
nd compo
ne
nts；Calculatio
n of cutti
ng edge size；UG drawi
ngs；Programmi
ng 目录 第一章绪论1 1.1模具行业现状1 1.2复合模的概念及优势1 1.2.1复合模的概念1 1.2.2复合模的优势1 1.3 CAE技术的简介1 第二章冲压工艺分析与设计3 2.1零件分析3 2.2冲裁工艺分析3 2.2.1冲裁件的工艺性分析3 2.2.2冲压工艺方案的确定4 第三章排样5 3.1排样5 3.1.1选取搭边值5 3.1.2送料步距和条料宽度的计算5 3.2材料利用率的计算6 第四章计算工序力及选择压力机7 4.1计算工序力7 4.1.1计算冲裁力7 4.1.2计算推件力7 4.1.3计算卸料力8 4.1.4计算总冲压力8 4.2确定压力中心8 4.3压力机的选择8 第五章模具尺寸计算及零部件选用10 5.1确定制件的尺寸公差10 5.1.1凸、凹模刃口尺寸的计算10 5.1.2中心距尺寸的计算11 5.2各主要零件结构尺寸的计算及选用12 5.2.1凹模外形尺寸的计算及刃口形式的确定12 5.2.2凸凹模的设计13 5.3凸模设计14 5.3.1凸模形式14 5.3.2凸模长度尺寸的计算14 5.3.3凸模强度校核14 第六章零部件的选用及装配图的绘制16 6.1确定垫板、凸模固定板、凸凹模固定板及卸料板的厚度16 6.2橡胶的选用18 6.3模架的选用18 6.3.1上、下模座厚度的计算18 6.3.2模具闭合高度的估算19 6.3.3模架的选用19 6.4模柄的选用19 6.5定位零件的选用20 6.6推件装置的选用20 6.7装配图的绘制20 第七章凹模加工22 7.1工序尺寸和加工余量的确定22 7.2 UG加工22 7.3编程23 7.3.1创建程序目录23 7.3.2创建刀具23 7.3.3创建坐标系和毛坯23 7.3.4创建操作和程序24 结束语28 致谢29 参考文献30 附录A 31