托架钻孔夹具的设计论文.doc

. .. 托架钻孔夹具的设计 摘 要 本文主要介绍了机床夹具的发展背景和在机械加工中的作用，托架钻孔夹具的设计过程。夹具是在机械加工过程中，为了保证加工精度，固定工件，使之占有确定位置以接受加工或检测的工艺装备。工件在机床上加工时要确定两个安装要求，即定位和夹紧。设计过程中主要包括定位方案的选取，导向方案中钻套参数的选取，夹紧机构的选择，采用分度方案的原因及夹具体的选择；斜孔钻模上工艺孔的设置和计算，夹具总图上尺寸、公差及技术要求的标注；工件的加工精度分析等。 关键字：夹具；钻模；定位；夹紧 .. Abstract This paper mainly introduces the development background of the machine tool fixture and the function in machining, and the design process of bracket boring fixture..?The fixture is in the process of machining, in order to guarantee the machining accuracy, fixed the workpiece, so that it occupies a determined position to accept the processing or testing process equipment.?The workpiece in the machine tool processing to determine the two installation requirements, that is, positioning and clamping.The design process include locating scheme selection, oriented program drill sets of parameters selection, choice of clamping mechanism by indexing scheme and selection of the specific folder; setting and calculation of inclined hole jig hole process, fixture general dimensions, tolerances and technical requirements of the mark; workpiece machining accuracy analysis. Key words: jig, jig, positioning, clamping; 目录 TOC \o 1-3 \h \u HYPERLINK \l _Toc28913 1、绪论 PAGEREF _Toc28913 1 HYPERLINK \l _Toc8104 1.1课题研究背景及夹具发展趋势 PAGEREF _Toc8104 1 HYPERLINK \l _Toc5868 1.2机床夹具 PAGEREF _Toc5868 3 HYPERLINK \l _Toc6104 1.2.1夹具主要的作用 PAGEREF _Toc6104 3 HYPERLINK \l _Toc19991 1.2.2机床夹具的分类 PAGEREF _Toc19991 3 HYPERLINK \l _Toc30914 1.2.3钻模设计要点 PAGEREF _Toc30914 4 HYPERLINK \l _Toc26432 1.3课题任务 PAGEREF _Toc26432 4 HYPERLINK \l _Toc3131 2、托架斜孔分度钻模的设计 PAGEREF _Toc3131 6 HYPERLINK \l _Toc22554 2.1定位方案 PAGEREF _Toc22554 6 HYPERLINK \l _Toc24443 2.2导向方案 PAGEREF _Toc24443 8 HYPERLINK \l _Toc30217 2.3夹紧方案 PAGEREF _Toc30217 9 HYPERLINK \l _Toc9021 2.4分度方案 PAGEREF _Toc9021 9 HYPERLINK \l _Toc9273 2.5夹具体的选用 PAGEREF _Toc9273 9 HYPERLINK \l _Toc13802 2.6斜孔钻模上工艺孔的设置与计