如下:
操作设备:戴尔电脑
操作系统:win10
操作软件:CAD软件2019
1、以下图为例,要在一个多边形的一角画上一个弧,需要擦掉圆的外弧。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/6609c93d70cf3bc780e36b8adf00baa1cc112af0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、要选择性的删掉一部分弧就可以用“修改”工具,在cad经典界面的右侧工具栏里。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/9c16fdfaaf51f3de44471f029aeef01f3b2979db?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、点击“修改”后光标变成小方块,这时候要选择与所擦弧有交点的两条线。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d788d43f8794a4c2521b464d00f41bd5ad6e399f?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、如图是多边形与圆相交的两条边,也就是说选中这两条边后,所要擦得弧已经被限定了,就在这两条线之间。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/3ac79f3df8dcd1009bfc59477c8b4710b9122f77?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、选中两条先后,按回车确认,说明要选的限定线已经选完。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/f2deb48f8c5494ee0256ae7f23f5e0fe99257e64?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、然后将方块状的光标放在要擦掉的大弧上,点击左键即可。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/86d6277f9e2f07085e5a8b66e724b899a901f27d?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
7、最后点击回车,操作完成。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/03087bf40ad162d971b7c37a1fdfa9ec8a13cd7f?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)