16孔单工位组合钻床夹具设计-毕业设计.doc

山西大同大学本科生毕业设计 中文题目： 16孔单工位组合钻床设计 英文题目：esign of Simplex 16 Hole Combination Drilling Machine Fixture 学 院： 煤炭工程学院 姓 名： 学 号： 120803013116 专 业：机械设计制造班 级： 12机械专升本 指导教师： 刘向丽 职 称： 完成日期： 204 年 月 日 摘 要 论文从现实出发，发现在生产小型拖拉机前盖上的16孔时，都是用普通车床进行加工，比较复杂，精度不易保证。工人劳动强度高，工步多，生产出来的废品也比较多，对工人的操作也比较严格，浪费了许多时间和不必要的损耗。设计过程都根据国家标准规定，先对机床进行总体设计，在进行主轴箱设计，包括主轴箱设计原始依据图，主轴箱传动系统的设计及计算，主轴箱零件的选择，以及传动轴承的选用和总图设计最后进行夹具设计 关键词：变位齿轮；滚针轴承；组合钻床；夹具设计 ABSTRACT Paper embarks from the reality, found in the production of small tractors before 16 hole on the cover, is conducted using ordinary lathe processing, is more complex, precision is difficult to guarantee.Workers labor intensity is high, the working step, also produce waste more, are more strict to the operation of the workers, waste a lot of time and unnecessary losses. This design by analyzing the workpiece structure, design a combination drilling machine, solves the problems of slow processing, can be convenient to make the hole through a process of finished parts processing, reducing the labor time and also reduce the unnecessary equipment, saves a lot of money for the factory, reduce the cost of the products. Design also uses the modified gear transmission, and use the needle roller bearing, solve the problem of the conventional methods cannot finish line box, reducing the size of the spindle box, and to reduce the weight of the spindle box, to save the cost and improve the reliability of the machine tool.Also adopted a new type of fixture, solves the location difficulty, the clamping time-consuming problem, reduces the labor intensity of workers. Design process according to the national standard, to the overall design of machine tool, first in the headstock design, including the design of spindle box original according to the figure, the spindle box of transmission system design and calculation, the choice of the spindle box parts