机械5

DP31-250机械压力机主机及传动系统设计 DESIGN OF THE MAIN ENGINE AND TRANSMISSION SYSTEM OF DP31-250 MECHANICAL PRESS 摘要 分析了压力机的发展历史背景，参阅了各类压力机的文章文献，基本确立了本次设计的设计思路，本次设计的题目是DP31-250机械压力机主机及传动系统设计。本次设计的主要工作结构是曲柄滑块。其主要设计内容有压力机组成、分类及工作原理的掌握。对滑块进行运动分析；设计和计算偏心齿轮芯轴；对电动机进行选择和确定；完成飞轮的设计；完成传动系统中轴和齿轮的设计与计算等，并对压力机做了一些受力分析和强度校核的计算，使组件的参数能够符合设计的要求，验证出各部位的结构是合理可行的。 最后，通过cad和creo这些绘图软件完成了对压力机的三维实体造型、装配图及主要零部件图的设计与绘制，灵活运用各种知识串联设计出了一个符合设计要求的压力机及其说明书，并分析得出此次压力机的设计是可行的。 关键词机械压力机；曲柄滑块；飞轮；传动系统 Abstract I
n this paper, the historical backgrou
nd of press machi
ne is a
nalyzed, a
nd the article literature of various press machi
nes has bee
n read, a
nd the desig
n idea of this desig
n is basically established. The desig
n of this desig
n is the desig
n of the mai
n e
ngi
ne a
nd tra
nsmissio
n system of the DP31-250 mecha
nical press. The mai
n structure of this desig
n is cra
nk slider. Its mai
n desig
n co
nte
nts i
nclude the compositio
n, classificatio
n a
nd worki
ng pri
nciple of the press machi
ne. The moveme
nt a
nalysis of the slider, the desig
n a
nd calculatio
n of the ecce
ntric gear core shaft, the selectio
n a
nd determi
natio
n of the motor, the desig
n of the flywheel, the completio
n of the desig
n a
nd calculatio
n of the shaft a
nd gear i
n the tra
nsmissio
n system, a
nd the calculatio
n of the force a
nalysis a
nd stre
ngth checki
ng of the press, so that the parameters of the compo
ne
nts ca
n meet the requireme
nts of the desig
n. It is proved that the structure of each part is reaso
nable a
nd feasible. Fi
nally, the desig
n a
nd drawi
ng of 3D solid modeli
ng, assembly drawi
ng a
nd mai
n parts drawi
ng of press are completed by CAD a
nd Creo, a
nd a press a
nd i
nstructio
ns which meet the requireme
nts of the desig
n are desig
ned flexibly with various k
nowledge, a
nd the desig
n of the press machi
ne is feasible. Keywords mecha
nical press; cra
nk slider; flywheel; tra
nsmissio
n system 目录 摘要I Abstract II 1绪论1 1.1机械压力机发展概况1 1.2机械压力机工作原理及主要技术参数2 1.3机械压力机分类3 1.4机械压力机研究现状4 1.5锻压设备的发展趋势7 2曲柄压力机工作机构的运动和受力分析9 2.1滑块的运动规律9 2.1.1滑块的行程与曲柄转角的关系9 2.1.2滑块的速度和曲柄转角的关系10 2.1.3滑块的加速度和曲柄转角的关系11 2.2曲柄滑块机构的受力分析12 3偏心齿轮芯轴设计13 3.1结构概述13 3.2芯轴的强度计算13 3.2.1芯轴直径经验公式13 3.2.2单边传动芯轴强度计算14 4电动机选择17 4.1功能组成17 4.2电动机功率18 5飞轮转动惯量计算及尺寸确定19 6传动系统的布置与设计21 6.1传动系统的布置21 6.2传动级数和各级速比分配22 7传动零件的设计计算24 7.1齿轮的设计计算24 7.2传动轴的设计计算25 结论30 致谢31 参考文献32