钻孔夹具设计.doc

毕业设计(机械类) 专用夹具的设计学校:浙江工业职业技术学院系别:数字控制分院班级: 09 数控一班姓名:冯佳学号: 090201139 指导老师:惠老师日期: 2012-5- 01 摘要在机械制造各行业的工艺过程中广泛应用着各种不同的,用以固定加工对象,使之占有正确位置,以便接受施工的一种工艺装备,统称为夹具。因此,无论是在机械加工,装配,检验,还是在焊接,热处理等冷,热工艺中,以及运输工作中都大量采用夹具。但在机械加工中应用最为广泛的是金属切削机床上使用的夹具,我们称其为机床夹具。它在保证产品优质,高产,低成本,充分发挥现有设备的潜力,以便工人掌握复杂或精密零件加工技术,以减轻繁重的体力劳动等诸方面起着巨大的作用。因此,机床夹具的设计和使用是促进生产迅速发展的重要工艺措施之一。为此,在本次毕业设计时,选择了机床夹具设计。目录摘要············································································································ I 前言·········································································································· 1 第一章钻孔夹具设计的要求··············································································· 2 钻孔夹具方案设计.............................................................................................................. 2 了解夹具总体设计的要求.................................................................................................. 2 第二章钻床夹具设计························································································ 4 确定夹具的类型................................................................................................................. 4 钻模的主要类型................................................................................................................. 4 盖板式夹具特点.................................................................................................................. 5 第三章夹具结构分析与设计··············································································· 13 3 .1 夹具的夹紧装置和定位装置.......................................................................................... 13 3 .2 夹具的导向....................................................................................................................... 14 3 .3 钻孔与工件之间的切屑间隙.......................................................................................... 15 3 .4 钻模板............................................................................................................................... 16 3