对称扁台螺纹轴—零件图A4
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对称扁台螺纹轴。设计内容包括2个方面：1、工艺分析；2、钻Ф16孔钻床专用夹具设计。对称扁台螺纹轴的作用是支承转动零件并与之一起回转以传递运动、扭矩或弯矩。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：对称扁台螺纹轴、工艺、Ф16孔、钻床、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 a symmetrical flatbed threaded shaft. Design includes two aspects: 1, process analysis; 2, drillingФ16 hole drilling fixture designed. The role of the symmetrical flat-bed threaded shaft is to support the rotating part and rotatewith it to transmit the motion, torque or bending moment. 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: Symmetrical flatbed screw shaft, technology,Ф16 hole, drilling machine, special fixture
目录
摘要I
ABSTRACT II
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机床夹具的组成2
1.4机床夹具的发展方向3
2零件的作用、组成表面及技术要求4
2.1零件的作用4
2.2零件的组成表面4
2.3零件的技术要求4
2.4零件的形位公差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7
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9
4钻Ф16孔专用夹具设计23
4.1定位方案及装置的确定23
4.1.1设计定位方案应满足的要求23
4.1.2定位方案的确定23
4.1.3定位元件的确定23
4.2夹紧方案及装置的确定24
4.2.1设计夹紧装置应遵循的原则24
4.2.2夹紧装置满足的基本要求25
4.2.3夹紧方案的确定25
4.2.4夹紧元件的确定25
4.3夹具体的设计25
4.4导向方案的选择27
4.4.1钻模的选择27
4.4.2钻套的选择27
4.5计算钻削力和夹紧力29
4.5.1计算钻削力29
4.5.2计算夹紧力29
4.6分析与计算定位误差30
结论31
致谢32
参考文献33
夹具装配图A0
定位块A3
对称扁台螺纹轴—毛坯图A4
夹具体A2
钻模座A3
1工序卡
2过程卡
3夹具设计部分
4检验卡片
5目录
6设计所包含文件
7摘要
8字数
