机械5

专用钻床液压系统设计 摘要 作为现代机械设备实现传动与控制的重要技术手段，液压技术在国民经济各领域得到了广泛的应用。与其他传动控制技术相比，液压技术具有能量密度高﹑配置灵活方便﹑调速范围大﹑工作平稳且快速性好﹑易于控制并过载保护﹑易于实现自动化和机电液一体化整合﹑系统设计制造和使用维护方便等多种显着的技术优势，因而使其成为现代机械工程的基本技术构成和现代控制工程的基本技术要素。 本课题研究的主要内容是专用钻床液压系统的设计及PLC设计。液压系统的设计是整个机器设计的一部分，它的任务是根据机器的用途、特点和要求，利用液压传动的基本原理，拟定出合理的液压系统图，再经过必要的计算来确定液压系统的参数，然后按照这些参数来选用液压元件的规格和进行系统的结构设计，最后对液压系统的主要性能进行验算。 关键字：专用钻床；液压系统；PLC设计 ABSTRACT As o
ne of the moder
n mecha
nical equipme
nt to achieve a
n importa
nt tech
nical mea
ns of power tra
nsmissio
n a
nd co
ntrol, hydraulic tech
nology has bee
n widely applied i
n various fields of the
natio
nal eco
nomy. Compared with other drive co
ntrol tech
nology, hydraulic tech
nology with high e
nergy de
nsity, co
nve
nie
nt a
nd flexible co
nfiguratio
n, wide ra
nge of speed regulatio
n, smooth a
nd fast is good, easy to co
ntrol a
nd overload protectio
n, easy to realize automatio
n a
nd electromecha
nical i
ntegratio
n, system desig
n a
nd ma
nufacture a
nd use a
nd mai
nte
na
nce is co
nve
nie
nt wait for a variety of sig
nifica
nt tech
nical adva
ntages, which make it become the basic co
nstitutio
n the tech
nology of moder
n mecha
nical e
ngi
neeri
ng a
nd moder
n co
ntrol e
ngi
neeri
ng of the basic eleme
nts of tech
nology. The mai
n co
nte
nt of this paper is the desig
n a
nd PLC desig
n of special drilli
ng machi
ne hydraulic system. The desig
n of the hydraulic system is a part of the whole desig
n of the machi
ne, it is the task of the applicatio
n of the machi
ne, accordi
ng to the characteristics a
nd requireme
nts, usi
ng the basic pri
nciples of hydraulic tra
nsmissio
n, a
nd draw up a reaso
nable hydraulic system diagram, a
nd the
n through the
necessary calculatio
ns to determi
ne the parameters of hydraulic system, structure desig
n a
nd the
n accordi
ng to these parameters to the selectio
n of hydraulic compo
ne
nts of the specificatio
n a
nd the last, checki
ng the mai
n performa
nce of the hydraulic system. Keywords: special drill press; hydraulic system; PLC desig
n 目录 摘要I ABSTRACT II 1绪论1 2设计任务书2 3液压系统的功能原理计算3 3.1液压缸液压系统设计要求分析3 3.2负载分析4 3.2.1工作负载4 3.2.2摩擦负载4 3.2.3惯性负载4 3.2.4液压缸在各阶段的负载值5 3.2.5负载图与速度图的绘制5 3.3液压缸主要参数的确定6 3.4计算和确定液压缸的主要尺寸6 3.5制定液压回路方案，拟定液压系统原理图17 3.6液压系统的工作原理18 3.7计算与选择液压元件19 3.7.1液压泵及驱动电机计算与选定19 3.7.2液压控制阀和液压辅助元件的选定20 3.7.3油管的选择21 3.7.4液压系统的验算23 4设计小结28 致谢29 参考文献30