1:上视基准面画两个草图,直径分别为20mm,40mm的圆 如图(1)
![1 1](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/1705477536a926e5.jpg)
图(1)
2:分别对这两个圆插入“螺旋线/涡状线”,设定螺距,圈数为“1”,得到两个独立的螺旋线,如图(2)(3)(4)(5)。(注意两个螺旋线,螺距圈数要一致)
![2 2](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/17054775452569ea.jpg)
图(2)
![3 3](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/1705477558093709.jpg)
图(3)
![4 4](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/1705477590126a52.jpg)
图(4)
![5 5](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/17054777044d2ffc.jpg)
图(5)
3:进入3D草图,分别对两个螺旋线,“转换实体引用”,得到两个曲线如图(6)(7)
![6 6](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/1705477720070053.jpg)
图(6)
![7 7](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/17054777353635a2.jpg)
图(7)
4:钣金-放样折弯,得到一个螺旋叶片,如图(8)(9)
![8 8](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/1705477747430996.jpg)
图(8)
![9 9](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/1705477762fcfcf7.jpg)
图(9)
5:上视基准面,画直径为20mm的圆,拉伸凸台300mm,如图(10)(11)
![10 10](http://www.hlfgzs.com/uploadfile/ueditor/image/202401/1705477804e638a7.jpg)