金属切削机床课程设计

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1、中北大学课程设计说明书目录1.机床参数确定···········································································22.运动设计··················································································22.1传动组的传动副数的确定·························································22.2结构网和结构式各种方案的选择······················

2、··························32.3拟定转速图···········································································42.4齿轮齿数确定········································································52.5传动系统图···········································································52.6轴、齿轮的计算转速········

3、·······················································63.传动零件的初步计算·································································63.1传动轴直径初定······································································63.2主轴轴颈直径的确定································································73.3齿轮模

4、数的初步计算································································74.主要零件的验算··········································································84.1三角胶带传动的计算和选定·······················································84.2圆柱齿轮的强度计算···························································

5、·····104.3传动轴的验算、强度验算、弯曲刚度验算·····································134.4滚动轴承的验算······································································165.设计感想·····················································································186.参考文献·················································

6、····································1818中北大学课程设计说明书1.机床参数的确定：(1)运动参数：回转主运动的机床，主运动的参数是主轴转速。①最低转速和最高转速：=12.5rpm=2120rpm②分级变速时的主轴转速数列：机床的分级变速机构共有Z级。Z=12，。任意两级转速之间的关系应为：据=φ11，得：φ=1.58。查表得：各轴转速：12.5、20、31.5、50、80、125、200、315、500、800、1250、2120。(2)动力参数的确定：由任务书设定电动机功率：N=1.5KW。查表得应该选择Y系列三相异步电动机Y90L-4（同步转速

7、1500r/min，50HZ，380V），转速1420rpm，效率81%。功率因素cosφ=0.82，额定转矩2.3KNm。2.运动设计：2.1传动组的传动副数的确定：传动组和传动副数可能的方案有：12=4*312=3*412=3*2*212=2*3*212=2*2*3在上列各方案中，前两个有时可以省掉一根轴。缺点是有一个传动组内有四个传动副。如果用一个四联滑移齿轮，则会增加轴向尺寸；如果用两个双联滑移齿轮，则操纵机构必须互锁以防止