目 录
前言·······················································································································1
第1章 夹具介绍···································································································2
1.1 夹具的特点································································································2
1.2 研究夹具的目的和意义················································································5
1.3 夹具的国内外现状和发展趋势·······································································5
1.4 夹具的基本结构和原理················································································6
第2章 三爪卡盘螺旋摆动式液压缸增力机构的结构和原理······························7
第3章 主要参数确定与结构计算······································································8
3.1 液压腔的结构设计·······················································································8
3.2 转子叶片数的设计······················································································8
3.3 摆动角的设计·····························································································8
3.4 定子圆柱活塞杠面积的设计·········································································8
第4章 凹槽轮廓线的设计··················································································10
4.1 轮廓面段数的确定····················································································10
4.2 活塞杠升程的确定····················································································10
4.3 参数θ1的设计·························································································11
4.4 参数β的设计··························································································13
第5章 夹具在安装和操作时应注意的事项························································14
5.1 夹具的安装······························································································14
5.2 夹具在操作时应注意的事项·······································································14
第6章 夹具的经济效益分析··············································································16
第7章 单工位夹具与成组夹具的分析································································18
7.1定位基准与定位元件的选择·········································································18
7.2夹紧元件与夹紧力的选择·············································································18
7.3夹具基体的设计夹具基体·············································································18
7.4机壳成组夹具结构······················································································19
第8章 误差分析··································································································22
8.1定位误差分析···························································································22
8.2 装备误差分析··························································································22
参考文献··············································································································24
致谢·····················································································································25
摘 要
本论文设计一种在三爪卡盘上加装摆动式液压缸和平面螺旋机构的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摆动式液压缸增力机构,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,具有良好的经济性和可行性。
关键词: 三爪卡盘,液压缸,夹具,增力
Abstract
This paper design a 3 Java Card the installation of the swing hydraulic pressure tank peace side spiral the spiral swing hydraulic pressure tank increased power structure. Traditional machine tools such as lathes, Miller, Chuck 3 Claws of workers in general rely on a manual for gripping, this will not only increase the intensity of the work of the workers, and the required gripping power is very great, but also a folder is not immediately are often the case, hinder the increase in productivity. The 3 Claws chuck the installation of the swing hydraulic pressure tank peace side spiral institutions constitute a spiral swing hydraulic pressure tank increased authority to achieve the original chuck the better, and the additional pressure can be converted into a circular movement and the simple, reliable, can achieve a higher increase to more than a sound economic and practical.
Key words: Three-jaw chuck, hydraulic cylinders clamps force
1.2 研究夹具的目的和意义
机床夹具设计是工艺装备设计中的一个重要组成部分,是保证产品质量和提高劳动生产率的一项重要技术措施。在设计过程中应深人实际,进行调查研究,吸取国内外的先进技术,制定出合理的设计方案,再进行具体的设计。而深入生产实际调查研究中,应当掌握下面的一些资料:
1.工件图纸;详细阅读工件的图纸,了解工件被加工表面是技术要求,该件在机器中的位置和作用,以及装置中的特殊要求。
2.工艺文件:了解工件的工艺过程,本工序的加工要求,工件被加工表面及待加工面状况,基准面选择的情况,可用机床设备的主要规格,与夹具连接部分的尺寸及切削用量等。
3.生产纲领:夹具的结构形式应与工件的批量大小相适应,做到经济合理。
4.制造与使用夹具的情况,有无通用零部件可供选用。工厂有无压缩空气站;制造和使用夹具的工人的技术状况等。
夹具的出现可靠地保证加工精度,提高整体工作效率,减轻劳动强度,充分发挥和扩大机床的工艺性能。
1.3 夹具的国内外现状和发展趋势
工业设计是人类社会发展和科学技术进步的产物,从英国莫里斯的“工艺美术运动”,到德国的包豪斯设计革命以及美国的广泛传播与推广,工业设计经过了酝酿,探索,形成,发展百余年的历史沧桑。时至今日,工业设计已成为一门独立的专业学科,并且有一套完整的研究体系。
1980年国际工业设计协会理事会(ICSID)给工业作了明确定义:“就批量生产的工业产品而言,凭借训练,技术知识,经验及视觉感受,而预示材料、结构、构造、形态、色彩、表面加工,装饰以新的品质和规格,叫做工业设计。根据当时的具体情况,工业设计师应在上述工业产品全部侧面或其中几个方面进行工作,而且需要工业设计师对包装、宣传、展示,市场开发等问题的解决付出自己的技术知识和经验以及视觉评价能力时,这也属于工业设计的范畴”。




