轴的加工工艺及钻夹具设计

机械设计制造及其自动化论文，论文编号:JX1495  论文字数:10228.页数:25  附CAD图

摘要

 轴类零件是机器中经常遇到的典型零件之一。它主要用来支承传动零部件，传递扭矩和承受载荷。轴类零件是旋转体零件，其长度大于直径，一般由同心轴的外圆柱面、圆锥面、内孔和螺纹及相应的端面所组成。 根据结构形状的不同，轴类零件可分为光轴、阶梯轴、空心轴和曲轴等。
 在轴加工的程序中，钻孔也是最主要的加工之一。无论，后续的加工是搪孔，扩孔，以致于研磨，都是把钻孔当作第一工程。因此后续加工的成败及顺利与否，和钻孔的结果是习习相关。钻孔工作可以在一般的工具机上进行，例如: 钻孔机，铣床，中心加工机。但是，使用一般的工具机在大量生产的钻孔工作而言，效率及速度上变的很低。所以现在市场上比较通用的是用钻孔主轴头/钻孔动力头来钻孔。
 所以对轴上孔的钻夹具设计是非常有必要的。
关键字: 工艺 加工 夹具 
 
Abstract
Shaft parts of the machine parts are often encountered in a typical one. It is mainly used to support transmission parts, transmission torque and load to bear. Rotating shaft parts is parts, and its length is greater than diameter, generally cylindrical shaft concentric cylindrical, conical surface, and hole and thread the end of the corresponding component. According to the structural shape of different parts can be divided into the optical axis shaft, stepped shaft, hollow shaft and the crankshaft and so on. Processing procedures in the shaft, the drilling process is also one of the most important. No matter, the processing is to keep out the follow-up hole, reaming, grinding so that all the drilling projects as the first. Processing, therefore the success or failure of follow-up and smooth it or not, and the results of drilling is related breeze. Drilling work in the general machine tools, such as: drilling machines, milling machines, machining centers. However, the use of machine tools in general in the mass production of the drilling work, efficiency and speed of change is very low. So now the market is relatively common spindle drill head / drill power drill head. Therefore, the drill hole axis fixture design is necessary. Keywords: Fixture assembly processing
目 录
中文摘要……  i
英文摘要…… ii
目录…………iii
第一章    绪论1
第二章    轴加工工艺说明3
    2.1 零件加工工艺设计3
 2.1.1零件的工艺性审查………… 3
 2.1.2毛坯选择……… 4
 2.1.3基准选择……… 4
 2.1.4拟定机械加工工艺路线…… 5
 2.1.5确定机械加工余量、工序尺寸及公差… 6
 2.1.6选择机床设备及工艺装备   7
 2.1.7确定切削用量及基本工时… 8
第三章    夹具设计……  15
 3.1 问题的提出……  15
 3.2定位方案及定位元件选择、设计………  16
 3.3导向方案及导向元件的选择和设计……  17
 3.4夹紧装置的设计  18
 3.5绘制夹具装配图  18
 3.6绘制夹具体零件图…………  18
第四章    小结………… 19
 参考文献… 20
 致谢……… 21