机械5

带有自动挡料装置的垫板级进模设计 摘要 冷冲压工艺是现代工业生产中重要的工艺装备之一，不仅仅在工业生产制造中有所应用，而且在日常生活的方方面面也有广泛应用。近年来，模具工业已摆脱了从属地位而发展成为独立的行业。我国的模具工业也有突飞猛进的发展，模具可以进行快速大批量生产，能制造出比较复杂的零件，极大的提高了模具制造的精度、质量和生产率，节约了零件加工成本，容易实现自动化的流水线生产。 设计一套带有自动挡料装置的冲孔落料级进模。垫板在机器的各部分之间起着连接时稳定、密封等作用。垫板的种类繁多，材质以及大小薄厚的不同，所起的作用也是不同的。按材质分类，可分为非金属、半金属、和金属垫板三种。而本次设计的垫板主要用在法兰连接的螺栓中的，作用是增大螺栓或螺母与零件表面的接触面积，防止零件表面被磨坏，配合弹簧垫圈，起到防松作用。此次垫板的模具设计采用的是级进摸，在生产应用中主要是冲孔和落料工序，其中包括冲压工艺分析，并确定模具，凸模、凹模、固定板、卸料装置等零部件的设计和制造，以及压力机的选择。 该设计能够使我对于学校所学的知识有一个全面的复习和进一步的认识，将专业课知识系统的结合在一起，使我提高自行设计这一方面的能力。 关键字：挡料装置；冲孔落料；级进模；冲压工艺 ABSTRACT Cold stampi
ng is o
ne of the most importa
nt tech
nological equipme
nt i
n moder
n i
ndustrial productio
n. It is
not o
nly used i
n i
ndustrial productio
n, but alsowidely used i
n every aspect of daily life. I
n rece
ntyears, the mold i
ndustry has developed from a subordi
nate positio
n to a
n i
ndepe
nde
nt i
ndustry. The mold i
ndustry i
n our cou
ntry also has a rapid developme
nt. The mold ca
n make rapid mass productio
n, ca
n produce more complex parts, greatly improve the precisio
n, quality a
nd productivity of the mold ma
nufacturi
ng, save the cost of parts processi
ng, a
nd easy to realize automatic productio
n li
ne. A set of pu
nchi
ng bla
nki
ng progressive diewith automatic stopper is desig
ned. The backi
ng plate is stable a
nd sealedwhe
n it is co
n
nected to all parts of the machi
ne. There are ma
ny ki
nds of backi
ng plates, a
nd the differe
nt materials a
nd sizes are differe
nt. Accordi
ng to material classificatio
n, it ca
n be divided i
nto three ki
nds:
no
n-metal, semi metal a
nd metal backi
ng plate. The desig
n of the cushio
n is mai
nly used i
n the fla
nge of the bolt, the fu
nctio
n is to i
ncrease the co
ntact area of the bolt or
nut a
nd the surface of the parts, to preve
nt the surface of the parts to bewor
n out,with the spri
ngwasher, playi
ng the a
nti loose
ni
ng effect. The desig
n of the die for this plate is a progressive touch. I
n the productio
n applicatio
n, it is mai
nly pu
nchi
ng a
nd bla
nki
ng process, i
ncludi
ng the stampi
ng process a
nalysis, a
nd the desig
n a
nd ma
nufacture of die, pu
nch, die, fixed plate, u
nloadi
ng device a
nd other parts, aswell as the selectio
n of press. The graduatio
n desig
n ca
n make me have a comprehe
nsive review a
nd further u
ndersta
ndi
ng of the k
nowledge lear
ned by the school, a
nd combi
ne the k
nowledge system of the professio
nal course together, so that I ca
n improve the ability to desig
n this aspect by myself. Keywords: blocki
ng device; bla
nki
ng bla
nki
ng; progressive die; stampi
ng process 目录 摘要I ABSTRACT II 前言1 1、绪论2 1.1.冲压技术理论概述2 1.1.1.全面推广CAD/CAM/CAE技术2 1.1.2.高速铣削加工2 1.1.3.模具扫描及数字化系统2 2、零件工艺性分析及确定工艺结构方案3 2.1.产品零件图3 2.2.零件工艺性分析3 2.2.1.结构与尺寸3 2.2.2.精度3 2.2.材料4 2.3.确定冲裁工艺方案4 3、工艺计算6 3.1.排样设计与计算6 3.1.1.排样方法6 3.1.2.搭边值的确定6 3.1.3.送料步距与条料宽度计算7 3.1.4.材料利用率及排样草图7 3.2.冲裁力、压力机的选取及压力中心计算8 3.2.1.冲裁力的计算8 3.2.2.卸料力、推件力和顶件力8 3.2.3.压力机所需总冲压力的计算9 3.3.压力中心的计算9 3.3.1.压力中心的计算9 3.4.凸、凹模刃口尺寸计算10 3.5.卸料结构设计、弹性元件的选用和计算13 3.5.1.卸料结构设计13 3.5.2.凸模与固定板的选用和计算13 4、连续模的主要零件设计14 4.1.凸、凹模结构设计14 4.1.1.凹模14 4.1.2.凸模15 4.2.压力机的选用与校核17 4.2.1.压力机的选用17 4.3.模架的选用17 5、模具的动作原理19 6、模具的总装配20 总结21 参考文献22