CAD绘图：[3]水管弯头
1、打开CAD，转主视图，画50*50的矩形
![CAD绘图：[3]水管弯头](https://exp-picture.cdn.bcebos.com/edd84743040148feedaac2d88fd149299b88027c.jpg)
2、修剪掉左侧边与下侧边
![CAD绘图：[3]水管弯头](https://exp-picture.cdn.bcebos.com/58021a0148fe1e42a9839b62c2299a883813037c.jpg)
3、倒圆角R45
![CAD绘图：[3]水管弯头](https://exp-picture.cdn.bcebos.com/054056fe1e425d6bf139d69a11883913e9e5007c.jpg)
4、转左视图，画直径50的圆，并向内偏移2
![CAD绘图：[3]水管弯头](https://exp-picture.cdn.bcebos.com/49bf00425d6b04d1bfc1053bb213e8e5edee017c.jpg)
5、面域两圆，再用大圆减去小圆，转概念视觉样式
![CAD绘图：[3]水管弯头](https://exp-picture.cdn.bcebos.com/1f03436b04d149296d60a6a063e5eceeacbc7e7c.jpg)
6、转西南等轴测视图，将圆移至弯角线端点（圆心对齐端点）
![CAD绘图：[3]水管弯头](https://exp-picture.cdn.bcebos.com/5c2a1ad149299a88c1fb775667eeadbcbf2f7f7c.jpg)
7、以弯角线为路径拉伸圆，弯头OK了
![CAD绘图：[3]水管弯头](https://exp-picture.cdn.bcebos.com/059057299a883913110d735d26bcbe2f46707c7c.jpg)
![CAD绘图：[3]水管弯头](https://exp-picture.cdn.bcebos.com/486884883913e8e51606320f352f477047187d7c.jpg)
1、打开CAD，转主视图，画50*50的矩形
2、修剪掉左侧边与下侧边
3、倒圆角R45
4、转左视图，画直径50的圆，并向内偏移2
5、面域两圆，再用大圆减去小圆，转概念视觉样式
6、转西南等轴测视图，将圆移至弯角线端点（圆心对齐端点）
7、以弯角线为路径拉伸圆，弯头OK了