机械5

链条联接件的冷冲模设计 摘要 随着现代模具行业的迅速发展，冲压成形加工技术在各个领域中也得到了更广泛的应用。冲压模作为冲压生产必不可少的重要工艺装备，其设计制造能力的好坏将直接影响着模具工业化的发展。 本设计根据客户提供的链条联接件的结构尺寸及精度要求完成一副冷冲压模具的设计。设计的主要内容有：冲压工艺方案的确定，零件的排样，凹、凸模刃口尺寸的计算，模具结构的设计和主要零件的设计计算等。 通过零件图的工艺分析可知，本次设计的难点在于如何保证冲压件的尺寸精度、生产效率及窄孔边距小型零件的安全冲裁问题。在设计过程中，通过查阅相关资料及结合生产实际情况，并通过工艺方案的比较，最终采用多排排样的工序安排及增大和冲裁塔边的方法来解决窄孔边距小型零件的安全冲裁问题，采用连续模加工方法满足生产效率的要求，同时采用凸模同时冲裁的方式来保证零件两孔间的中心距精度要求。 本次设计尽可能地采用标准连接件及标准模具模架及其他板件等，从而省去板件坯料加工和热处理的复杂过程，缩减制模周期。另外，因为零件尺寸较小，设计中采用自动送料装置、导正销精确定位装置等工艺措施，从而保证冲压的可行性和安全性，满足生产工艺的要求。 关键词：冲压；冷冲模设计；工序；塔边 Abstract With the rapid developme
nt of moder
n i
ndustry, stampi
ng as o
ne importa
ntway of material formi
ngwill be i
ncreasi
ngly applied. Mold as esse
ntial stampi
ng productio
n tech
nology a
nd equipme
nt, the ability of her desig
n a
nd ma
nufacturi
ngwill have a direct impact o
n i
ndustrial developme
nt. This desig
n accordi
ng to the chai
n co
n
necti
ng piece structure size a
nd precisio
n requireme
ntswhich the customer provide to complete a pair of cold stampi
ng die desig
n. the mai
n co
nte
nts of the Desig
n are: the program of stampi
ng process, parts layout, size edge calculatio
n of co
ncave a
nd co
nvex mold, the desig
n of die structure a
nd mai
n parts desig
n a
nd calculatio
n. Through the process a
nalysis of parts, the desig
n difficulty of the desig
n is how to e
nsure the dime
nsio
n precisio
n of the pu
nchi
ng part, the productio
n efficie
ncy a
nd the safety bla
nki
ng problem of small partswith
narrow pore margi
n. I
n the desig
n process, through access to releva
nt i
nformatio
n a
nd combi
nedwith the actual situatio
n of productio
n, a
nd through the compariso
n of the process scheme, the fi
nal i
n a multi-row
nesti
ng process arra
ngeme
nts a
nd i
ncrease a
nd pu
nchi
ng the side of the tower method to the safety bla
nki
ng problem of small partswith
narrow pore margi
n, usi
ng the co
nti
nuous mode processi
ng to meet the requireme
nts of the productio
n efficie
ncy,while usi
ng the together pu
nchi
ngway to meet the ce
nter dista
nce accuracy requireme
nts of the two holes of the part. This desig
n as much as possible use the sta
ndard co
n
nector a
nd sta
ndard mold mold a
nd other pa
nels, thereby elimi
nati
ng the complexity of the board bla
nk processi
ng a
nd heat treatme
nt process to reduce the moldi
ng cycle. Besides,Because of the small size parts, the automatic feedi
ng device, guide pi
n device for precise positio
ni
ng a
nd other tech
nological measures are used i
n the desig
n, so as to e
nsure the safety a
nd feasibility of stampi
ng a
nd meet the requireme
nt of productio
n process. Keywords: Stampi
ng; Die desig
n; Process; The tower side 目录 引言5 1制件工艺方案的制定6 1.1设计题目6 1.2冲裁件的工艺性分析6 1.2.1制件结构尺寸的分析6 1.2.2制件尺寸等精度的分析7 1.2.3制件材料性能的分析7 1.2.4冲压加工的经济性分析8 1.3冲裁方案的制定8 1.3.1方案的设计8 1.3.2方案的分析8 1.3.3工艺方案的确定9 2模具工艺参数的计算及总体结构的设计9 2.1排样设计与材料利用率的计算9 2.2模具总体结构的设计12 2.2.1模架的选择12 2.2.2操作及定位的方式的确定12 2.2.3卸料及出料方式的确定12 2.2.4凸模的高度分布12 2.2.5模具整体结构的确定12 2.3冲裁力的计算及初选压力机13 2.3.1冲压总力的计算13 2.3.2初选压力机13 2.4压力中心的计算14 2.5凸、凹模刃口尺寸的计算15 2.5.1凸、凹模刃口尺寸的计算15 3冲模主要零部件的设计与计算18 3.1各板件厚度的计算和选用18 3.2工作零件的设计与计算18 3.2.1凸模的设计与计算18 3.2.2凹模的设计与计算20 3.3导正销及其护套的设计计算21 3.4模架参数的确定23 3.5其他相关零件的设计计算23 3.5.1凸模固定板的选用23 3.5.2固定卸料板的设计计算23 3.5.3导料板的设计计算24 3.5.4螺钉及销钉的选用24 3.5.5模柄的选择25 3.5.6垫板的选用25 3.5.7托料板的设计25 3.6压力机闭合高度的校核26 4模具总装图及零件图27 5部分模具零件加工工艺的编制30 5.1工艺编制的基本原则与注意事项30 5.2模具制造工艺规程的制定步骤30 5.3主要模具零件的工艺规程30 5.3.1凸模1的加工工艺规程30 5.3.2凸模固定板的加工工艺规程31 5.3.3凹模的加工工艺规程31 6总结32 谢辞34 参考文献35