文档介绍：目录
牛头刨床机构运动···································7
原始设计数据·······································8
机械原理课程设计任务书雨设计指导···················1
电机至大齿轮6之间的减速传都系统设计···············8
主机构(即摆动导杆机构)的设计·····················9
凸轮机构的设计·····································11
棘轮机构的设计·····································15
连杆机构的设计·····································16
解析法分析计算滑轮8的速度和加速度·················17
参考资料···········································
20
设计总结···········································21
附图(A2一张,A3两张)·····························22
二、牛头刨床机构运动
电机带轮齿轮
如结构图所示:
图中1、2为带轮,1与电机固定,、、、为传动齿轮,BC为曲柄(与齿轮6固结),CD为滑块、7为摆杆AD,8、9为带刀架之滑枕,10为盘型凸轮(与齿轮6固结),电动机经带传动将运动和动力传至齿轮,驱动齿轮和曲柄转动;曲柄回转经滑块C带动摆杆7,再经过滑块D带动滑枕8,使刀架往复移动完成刨削运动。另外,盘型凸轮10与曲柄同时转动,推动带有滚子的摆杆11经四杆机构拨动棘轮14转动,而棘轮与进给丝杠15相连,通过螺母推动工作台(6完成自动进给运动)。
三、原图设计数据
速度(次/分)
63
电机转速
1440
行程(H)
300
小齿轮数
18
行程速比系数(K)
经给量(6级)
-
凸轮机构从动
件运动规律
余弦加速度运动规律
四、电机至大齿轮6之间的减速传动系统(见图1)设计
确定总传动比
由原始数据可知:6齿轮的转速=63转/分