XX大学本科生毕业设计（论文）
摘 要
本机器用于剪切厚度为1～6mm,宽度为2500mm的钢板。
被剪切板料强度以450N/mm2为准,如需剪切其它强度的板料时,应相应减薄被剪板料的厚度。
本机器采用钢板焊接结构,液压传动,氮气缸回程,电气控制.工作平稳可靠,机器体积小,重量轻,刚性好,操作方便等优点。
由于此机器设计工作量大，设计时间的限制，以及诸多因素的影响，故选其液压控制部分作为我的设计内容，它包括了：如何完成剪切，如何压料及卸料的过程。
调整刃口间隙迅速方便,机器设有前后挡料,后挡料采用机械传动,转数器显示数值,并能作手动微调,调节方便可靠.前挡料采用标尺计数,挡块定位,另外还设有灯光照明,便于划线剪切,通过时间继电器可任意调节上刀架的行程,以提高剪切窄板料的效率。
关键字：剪板机；液压；继电器；
1
XX大学本科生毕业设计（论文）
Abstract
The machine used to cut the thickness of 1 ~ 6mm, a width of 2500mm of steel.
Material strength is the clipboard to 450N/mm2 prevail, For other strength of the sheet metal shear, should accordingly be shear thinning in the thickness of material.
This machine adopts steel plate welded structure, hydraulic drive, nitrogen cylinder, stead, electrical control. Smooth and reliable, machine size, light weight, rigid, and easy operation. Because of this large machine design, design time constraints, as well as a number of factors, was chosen as part of its hydraulic control the content of my design, which includes: how to complete the cut, how to press materials and unloading process.
Quickly and easily adjust the blade clearance, the machine has material before and after block after block material using mechanical transmission, transfer the number of displays values, and can be manually fine-tuning, reliable and easy to adjust. Before the block material using scale count, block positioning, in addition to with lighting, convenient crossed cut, by the time relay can be adjusted on the turret of his program to improve the efficiency of cutting narrow sheet.
Keywords: Shearing; hydraulic; relay;
2
XX大学本科生毕业设计（论文）
目 录
第1章 绪论 ......................................................................................................1
1.1 剪板机概述 ..............................................................................................1 1.2 剪板机的背景 ..........................................................................................1 1.3 剪板机在国内外的研究状况 ..................................................................2 1.4 液压技术的发展趋势 ..............................................................................2
第2章 剪板机介绍 ........................................................................................6
2.1 剪板机的基本参数 ..................................................................................6 2.2 剪板机的工作原理 ..................................................................................6 2.3 剪板机的用途和分类 ..............................................................................7
第3章 剪板机液压系统的设计 ...................................................................9
3.1 液压传动定义和发展概况 ............................................................................... 9 3.2 液压传动系统的工作原理 ....................................................................10 3.3 液压传动的工作介质 ...................................................................................... 13 3.4 确定液压执行元件的形式 ....................................................................17 3.5 分析液压执行元件的主要参数 ............................................................17 3.6 选择液压元件 ........................................................................................20 3.7 拟定液压系统图 ....................................................................................25 3.8 液压系统性能验算 ..................................................................................27 3.9 液压传动的优缺点和应用 ....................................................................27
第4章 控制液压系统工作的电气设计 ................................................30
4.1 课题概述和设计要求 ............................................................................30 4.2 设计理念 ................................................................................................30 4.3 电动机的选择 ........................................................................................31 4.4 电气控制线路图的设计 ........................................................................31 4.5 电器元件的选择 ....................................................................................33 4.6 电气接线图的绘制 ................................................................................35
第5章 机器的使用和要求 ..........................................................................37
5.1 机器的操作 ............................................................................................37 5.2 机器的润滑 ............................................................................................37
3
剪板机的液压系统设计毕业论文
