机械原理课程设计---牛头刨床说明书

机械原理课程设计 牛头刨床说明书

负 责 人：

学 院： 机电工程学院 班 级：

学 号：

日 期： 2013年 7 月 11 日

目录

第1章 设计任务

1.1 设计任务·······················································3

1.2 原始参数·······················································4

第2章 运动方案设计

2.1 主机构方案（选型）···········································5 2.2 齿轮传动机构方案············································7

第3章 电动机的选择

3.1 电动机的功率··················································8

3.2 电动机的型号··················································8

第4章 齿轮机构设计

4.1 传动比的分配·················································10

4.2 齿轮机构的设计··············································10

第5章 主机构的设计

5.1 主机构运动分析··············································12

5.2 主机构受力分析··············································16

第6章 速度波动调节

6.1 Δwmax的计算···············································26 6.2 飞轮的设计····················································26 第7章 总结

7.1 体会心得·······················································30

7.2 参考文件·······················································32

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第1章 设计任务

1.1 设计任务

中小型牛头刨床的主运动(见机床)大多采用曲柄摇杆机构(见曲柄滑块机构)传动，故滑枕的移动速度是不均匀的。大型牛头刨床多采用液压传动，滑枕基本上是匀速运动。滑枕的返回行程速度大于工作行程速度。由于采用单刃刨刀加工，且在滑枕回程时不切削，牛

头刨床的生产率较低。机床的主参数是最大刨削长度。牛头刨床主要有普通牛头刨床、仿形牛头刨床和移动式牛头刨床等。普通牛头刨床(见图)由滑枕带着刨刀作水平直线住复运动，刀架可在垂直面内回转一个角度，并可手动进给，工作台带着工件作间歇的横向或垂直进给运动，常用于加工平面、沟槽和燕尾面等。仿形牛头刨床是在普通牛头刨床上增加一仿形机构，

用于加工成形表面，如透平叶片。移动式牛头刨床的滑枕与滑座还能在床身(卧式)或立柱(立式)上移动，适用于刨削特大型工件的局部平

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