机械5

摘要 冲压裁切机是为了提高工作效率而进行设计的专用机床，该机械主要用于皮革的切削。 通过分析皮革下料机的设计要求和设计原理，确定了总体方案，完成了传动零件的选定，设计非标准件和机床总体结构。为实现下料机的预期功能，对其传动系统进行了设计。拟定了传动方案，分配了各级传动比，完成了动力和运动参数设计，以及结构设计，并进行有关的计算和校核等。根据下料机切削皮革的要求，选用曲柄滑块机构来控制工作行程，对曲柄滑块机构的运动进行了分析。所设计的龙门皮革下料机的工作效率高，能够准确的运动,传动平稳可靠，使用安全,易于维修，满足了下料分切干燥要求，工作行程便于调整，能保证所需皮革样式准确的切除。 关键词：冲压裁切；总体机构；传动系统 Abstract Pu
nch cutti
ng machi
ne is a special machi
ne desig
ned to improveworki
ng efficie
ncy, the machi
ne is mai
nly used for leather cutti
ng. Through the a
nalysis of the desig
n requireme
nts a
nd desig
n pri
nciples of leather bla
nki
ng machi
ne, the overall scheme is determi
ned, the selectio
n of tra
nsmissio
n parts is completed, a
nd the
no
n-sta
ndard parts a
nd the overall structure of the machi
ne tool are desig
ned. I
n order to realize the expected fu
nctio
n of bla
nki
ng machi
ne, its tra
nsmissio
n system is desig
ned. The tra
nsmissio
n scheme is draw
n up, the tra
nsmissio
n ratio at all levels is allocated, the desig
n of power a
nd motio
n parameters is completed, the structure is desig
ned, a
nd the releva
nt calculatio
n a
ndverificatio
n are carried out. Accordi
ng to the requireme
nt of cutti
ng leather by the bla
nki
ng machi
ne, the cra
nk slider mecha
nism is selected to co
ntrol theworki
ng stroke, a
nd the moveme
nt of the cra
nk slider mecha
nism is a
nalyzed. The desig
ned Lo
ngme
n leather bla
nki
ng machi
ne has the adva
ntages of highworki
ng efficie
ncy, accurate moveme
nt, stable a
nd reliable tra
nsmissio
n, safe use a
nd easy mai
nte
na
nce, meets the requireme
nts of cutti
ng a
nd dryi
ng the bla
nki
ng, is co
nve
nie
nt to adjust theworki
ng stroke, a
nd ca
n e
nsure the accurate removal of the required leather style. Keywords: stampi
ng cutti
ng; Ge
neral i
nstitutio
ns; Tra
nsmissio
n system 目录 摘要1 关键词： 1 Abstract 2 第一章、绪论5 1.1课题的来源、设计要求5 1.2课题在国内（外）发展概况及存在的问题5 1.3国内数控冲裁机产业现况6 1.4国内数控冲裁机产业展望7 1.5课题设计的总体思路9 1.6本设计应解决的主要问题、意义及实用价值9 1.7主要规范与技术指标10 第二章系统总体设计11 2.1冲裁机的工作原理及特点11 2.1.1液压系统的工作原理11 2.1.2液压系统的主要结构形式12 2.1.3液压系统基本参数12 2.1.4液压系统的特点13 2.2液压控制系统的功能和组成13 2.3液压系统系统设计及分析14 2.3.1液压系统的液压系统功能需求分析14 2.3.2液压系统的系统图及系统工作原理分析15 2.3.3系统控制基本回路17 第三章元件选取计算21 3.1液压缸的尺寸21 3.1.1工作缸的尺寸21 3.1.2顶出缸的尺寸22 3.2计算液压系统工作的流量22 3.3选择液压泵的规格24 3.4确定控制阀的尺寸25 第四章移动系统设计及计算26 4.1电机的选择26 4.2链传动的设计27 4.3轴的设计29 4.4联轴器及键的选择31 4.5轴承的选择32 致谢34 参考文献35