方刀架加工工艺及钻M12螺纹底孔夹具设计（全套图纸三维）.doc

本科毕业论文
题目方刀架零件加工工艺及夹具设计

学院机电与信息工程学院
专业机械设计制造及其自动化
年级 2011 级
学号
姓名
指导教师
成绩
2015 年 11 月 10 日
目录
前言 1
1 零件分析 2
零件的作用 2
零件的工艺分析 2
零件图样分析 2
工艺分析 2
2 确定毛坯、绘制毛坯简图 4
选择毛坯 4
确定毛坯的尺寸公差和机械加工余量 4
5
3 工艺规程设计 6
定位基准的选择 6
拟订工艺路线 6
加工余量、工序尺寸和公差的确定 8
切削用量的计算 9
4 钻M12螺纹底孔专用夹具设计 10
夹具的夹紧装置和定位装置 10
钻模板与导引元件的设计 10
切削力及夹紧力的计算 11
钻孔与工件之间的切屑间隙 13
钻模板 14
14
钻套、衬套、钻模板设计与选用 15
确定夹具体结构和总体结构 16
结论 17
参考文献 18
致谢 19
方刀架零件加工工艺及夹具设计
摘要:本课题主要是在方刀架零件加工过程的基础上进行的专用夹具设计。主要加工部位是平面和孔。在一般情况下,确保比保证精密加工孔很容易。因此,设计遵循的原则是先加工面后加工孔。孔加工平面分明显的阶段性保证粗加工和加工精度加工孔。通过底面作一个良好的基础过程的基础。主要的流程安排是支持在定位孔过程第一个,然后进行平面和孔定位技术支持上加工孔。在随后的步骤中,除了被定位在平面和孔的加工工艺及其他孔过程。整个过程是一个组合的选择工具。专用夹具夹具的选择,有自锁机构,因此,对于大批量,设计夹具会产生更高的生产力,提高生产效率,满足设计要求。
关键词:方刀架类零件;工艺;夹具;
全套图纸加153893706
Abstract: Machining process and fixture design of the lathe tool
This paper mainly is in the process of the processing of the parts of the machine tool, based on the special fixture design. The main parts of the machine is the plane and the hole. In general, it is easy to make sure that the hole is better than the guarantee. Therefore, the design principle is the first processing hole. The hole processing plane is obvious and the phase of the hole is ensured. The foundation of a good foundation is made by the bottom surface. The main process arrangement is to support the first one in the positioning hole, and then carry out the plane and hole positioning technology to support the processing hole. In the subsequent step, the process and other holes are positioned in addition to being positioned in the plane and hole. The whole process is bination of selection tools. The choice of special fixture fixture, there are self - locking mechanism, therefore, for large quantities, design fixture will produce higher productivity, improve production efficiency, meet the design requirements.
Key words: square frame parts; process; fixture
前言