三维零件图
尾座的加工工艺及镗Ф25孔夹具设计
摘要
在经济飞速向前的当下，制造业快速发展的今天。非标零件的尺寸、结构也千变万化。以往设计的通用夹具，越来越多的面临淘汰。所以专用夹具的设计与生产越来越广泛。专用夹具的研究其主要内容有定位方案、夹紧方案的确定，定位元件、夹紧元件的选择，导向装置的选择等等。
本次设计研究的对象是尾座。设计内容包括2个方面：1、工艺分析；2、镗Ф25孔镗床专用夹具设计。尾座安装在机床的导轨上，尾座上的套筒可以安装顶尖，以支承较长工件、安装钻头、绞刀，进行孔加工。
从零件结构分析入手，合理选择定位基准，各种刀具参数选择以及切削用量的选择等。在安排工艺过程时，根据加工要求不同，需要进行粗精加工。另外还确定了切削参数，加工工时，填写工艺过程卡片和工序卡片。专用夹具设计内容有：确定定位方案及元件，确定夹紧方案及元件，确定导向装置，计算切削力及夹紧力等。
关键词：尾座、工艺、Ф25孔、镗床、专用夹具
ABSTRACT
At a time of rapid economic growth, the rapid development of manufacturing today. Non-standard parts size, structure is ever-changing. Previously designed universal fixtures, more and more face elimination. Therefore, the design and production of special fixture morewidely. The main research contents of the special fixtures are the positioning scheme, the determination of the clamping scheme, the positioning elements, the selection of the clamping elements, the selection of the guiding device and so on.
The object of this design study is tailstock. Design includes two aspects: 1, process analysis; 2, boringФ25 hole boring machine designed for fixture. The tailstock is mounted on the guide rail of the machine. The sleeve on the tailstock can be mounted on the top to support longerworkpieces, drill bits and reamers for hole machining.
From the structural analysis of parts to startwith a reasonable choice of positioning standards, avariety of tool parameters and the choice of cutting dosage. In the process of scheduling, according to different processing requirements, the need for rough finishing. In addition, it also determines the cutting parameters,working hours, fill in the process card and process card. Special fixture design content: determine the positioning programs and components, to determine the clamping programs and components, to determine the guide to calculate the cutting force and clamping force.
Keywords：tailstock, technology,Ф25 hole, boring machine, special fixture
目录
摘要I
ABSTRACT I
1绪论1
1.1机床夹具的概述1
1.2机床夹具的分类1
1.3机床夹具的发展方向2
2零件的作用、组成表面及技术要求3
2.1零件的作用3
2.2零件的组成表面4
2.3零件的技术要求4
3零件的工艺分析及设计5
3.1确定零件的生产类型及毛坯的制造形式5
3.1.1确定零件的生产类型5
3.1.2确定毛坯的制造形式5
3.2基准的选择与确定6
3.3加工工艺路线的确定7
3.4加工设备及加工装备的选择8
3.5确定加工余量8
3.6计算切削用量、基本时间及辅助时间12
4镗Ф25孔专用夹具设计37
4.1定位方案及装置的确定37
4.1.1定位方案的确定37
4.1.2定位元件的确定37
4.2夹紧方案及装置的确定38
4.2.1夹紧方案的确定38
4.2.2夹紧元件的确定38
4.3夹具体的设计38
4.4确定导向装置—镗套39
4.5计算镗削力40
4.6计算夹紧力41
4.7分析与计算定位误差41
5结论42
6致谢43
参考文献44
三维夹具装配图
尾座零件图A3
夹具装配图A0
夹具非标零件-定位块A3
尾座毛坯图A3
夹具非标零件-工件插销A4
夹具非标零件-夹紧盘A4
夹具非标零件-夹紧座A3
夹具非标零件-镗模座A3
夹具体A1
加工过程卡
夹具设计部分
设计所包含文件
字数统计
加工工序卡
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