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图纸共1张,A1-三爪液压卡盘装配图.dwg
摘 要
本论文设计一种在三爪卡盘上加装摆动式液压缸平面螺旋机构螺旋摆动式液压缸增力机构的结构。传统的机床如车床、铣床上三爪卡盘的工作一般依靠工人用手工进行夹紧,这不但增加了工人的劳动强度,而且所需夹紧力非常大,还常常有夹不紧的情况,阻碍了生产率的提高。通过在三爪卡盘加装摆动式液压缸和平面螺旋机构构成螺旋式摆动液压缸增力机构,可实现与原有卡盘体的较好结合,并使外加压力能转换成圆周运动,且其结构简单,工作可靠,能达到较高的增力比,具有良好的经济性可行性。利用一个液压工作站提供工作动力,连接回转油缸完成伸缩动作,从而控制液压卡盘的夹紧与松开,电路进行系统连接,实现系统控制和人工控制两种方式并用。元件的精选配合同心度的安装,保证卡盘夹持精度。利用一个液压工作站提供工作动力,连接回转油缸完成伸缩动作,从而控制液压卡盘的夹紧与松开,电路进行系统连接,实现系统控制和人工控制两种方式并用。
关键字:三爪卡盘,液压缸,夹具,增力
ABSTRACT
This paper design a three jaw chuck of the installation of the swing hydraulic cylinder plane spiral spiral swing hydraulic pressure tank reinforcement structure. Traditional machines such as lathe, milling machine three claw chuck workers in general rely on manually clamping, which not only increases the labor intensity of the workers, but also required clamping force is very large, often a folder is not tight, hinder the increase in productivity. Through the three jaw chuck of the installation of the swing hydraulic cylinder and a plane spiral mechanism spiral swing hydraulic cylinder force increasing mechanism, can realize the original chuck the better, and the additional pressure can be converted into a circular movement, and has the advantages of simple structure, reliable work, can achieve a higher increase than, has good economic feasibility. Using a hydraulic workstation provides working power, connecting the rotary cylinder finish retractable action, thereby controlling the hydraulic chuck clamping and loosening, circuit system connection, the realization of system control and manual control in two ways and use. Element selection with the heart of installation, ensure precision clamping chuck. Using a hydraulic workstation provides working power, connecting the rotary cylinder finish retractable action, thereby controlling the hydraulic chuck clamping and loosening, circuit system connection, the realization of system control and manual control in two ways and use.
Keywords: three claw chuck, hydraulic cylinder, fixture, booster
目 录
ABSTRACT 4
一、 夹具介绍 7
夹具特点 7
1.2 夹具的结构及工作原理 8
二、 卡盘结构及原理 9
2.1 结构 9
2.2 原理 10
2.3 优点 11
2.4 主要零件的制造要求 13
三、 液压卡盘的设计要求 14
3.1 液压卡盘的结构 14
3.2 液压卡盘的工作原理 15
四、 主要参数设计 17
4.1 液压卡盘承载力的确定 17
4.2 卡瓦对钻杆的夹紧力Q 17
4.3 蝶形弹簧的轴向推力F的计算 18
4.4 设计蝶形弹簧 19
4.5 活塞行程S的确定 20
4.6 夹紧包角 22
图7-3受力分析 22
4.7 夹紧力与夹紧油压 22
4.8 转动丝杆之驱动力矩 24
4.8.1 驱动活塞产生有压缩需要力矩 24
4.8.2 丝杆与缸盖的止推摩擦力矩 25
五、 液压控制系统的设计 27
改装标准 28
结束语 29
致 谢 30
参考文献 31
