机械5

机械剪板机的设计及分析 摘要 制造业是国家经济的支柱之一，同时也是评价一个国家科技实力和国防实力是否领先的重要标准。在机械制造业中，金属加工是机械制造过程中一个不可或缺的环节，而冷冲压技术是近代金属加工领域中的一个重要组成部分，是实现少切屑甚至无切屑的先进工艺。在现代工业生产中，剪板机是最重要的板材加工设备之一，而曲柄式剪板机是利用机械传动产生压力的实现冷冲压技术的重要机器之一，在冷冲压工艺中占有很大的比重。 曲柄式剪板机的动力由电动机提供，后通过传动系统把电动机的运动和能量传给工作机构，从而将工件发生确定的变形，达到剪切的目的。 本文设计了公称压力为60KN开式单点曲柄式剪板机。首先进行了剪板机的总体方案设计；然后设计了剪板机的机械传动系统；重点对曲柄滑块机构进行了分析设计，并对主要承载构件上刀片进行了工作能力校核及ANSYS应力分析；选择了合适的离合器和压料器。 关键词：剪板机；传动系统；曲柄连杆；动态仿真 ABSTRACT Ma
nufacturi
ng is o
ne of the pillars of the
natio
nal eco
nomy. It is also a
n importa
nt criterio
n to evaluate whether a cou
ntry's scie
ntific a
nd tech
nological stre
ngth a
nd
natio
nal defe
nse stre
ngth are ahead. I
n the machi
nery ma
nufacturi
ng i
ndustry, metal processi
ng is a
n i
ndispe
nsable li
nk i
n the process of mecha
nical ma
nufacturi
ng, a
nd cold stampi
ng tech
nology is a
n importa
nt part of the field of moder
n metal processi
ng, a
nd it is a
n adva
nced tech
nology to realize small chip or eve
n
no chip. I
n the moder
n i
ndustrial productio
n, the sheari
ng machi
ne is o
ne of the most importa
nt processi
ng equipme
nt, a
nd the cra
nk shears are o
ne of the most importa
nt machi
nes to realize the cold stampi
ng tech
nology usi
ng mecha
nical tra
nsmissio
n, a
nd it occupies a large proportio
n i
n the cold stampi
ng process. The power of the cra
nk shears is provided by the motor, a
nd the
n the motio
n a
nd e
nergy of the motor are passed to the worki
ng mecha
nism through the tra
nsmissio
n system, thus the deformatio
n of the workpiece is determi
ned a
nd the purpose of sheari
ng is achieved. The ope
n type si
ngle poi
nt cra
nk sheari
ng machi
ne with a
nomi
nal pressure of 60KN is desig
ned. First, the overall scheme of the sheari
ng machi
ne is desig
ned; the
n the mecha
nical tra
nsmissio
n system of the machi
ne is desig
ned; the emphasis is o
n the a
nalysis a
nd desig
n of the cra
nk slider mecha
nism, a
nd the ANSYS stress a
nalysis is carried out o
n the blade of the mai
n beari
ng member; the suitable clutch a
nd pressure feeder are selected. key word：Sheari
ng machi
ne; tra
nsmissio
n system; cra
nk co
n
necti
ng rod; dy
namic simulatio
n. 目录 摘要I ABSTRACT II 1.绪论1 1.1剪板机概述1 1.2剪板机国内外发展状况3 1.3剪板机的发展趋势5 1.4研究目的及研究内容6 1.5本章小结7 2.剪板机总体方案的确定8 2.1剪板机的基本参数要求8 2.2剪板机设计总体方案的确定9 2.3本章小结12 3.剪板机的传动系统设计13 3.1电动机的选型13 3.2带传动的设计及其计算18 3.3本章小结27 4.曲柄连杆机构的设计27 4.1曲柄连杆机构简介27 4.2曲轴的设计计算及校核28 4.3连杆的设计33 4.4本章小结35 5.离合器与制动器35 5.1离合器的选择36 5.2制动器的选择37 6.上刀架的设计及上刀片的有限元分析39 6.1上刀架的设计39 6.2刀片的选择40 6.3上刀片的有限元分析41 6.4本章小结45 7.简易机械剪板机的技术经济分析46 7.1方案选择的合理性分析46 7.2技术经济分析49 总结与体会50 参考文献51 致谢53 附录一54 附录二72