如GB/T 18229-2000 CAD工程制图规则,GB/T 50001-2010 房屋建筑制图统一标准,GB18135-2008 电气工程CAD制图规则,还有GB/T50104 建筑制图标准,50105建筑结构制图标准,50106给水排水制图标准,GB/T14665机械工程CAD制图规则等。
基本线型GB/T4457.4-2002、GB/T17450-1998
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/2cf5e0fe9925bc31d77b37e252df8db1cb1370a1?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
CAD软件图层中可选择线型
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/5fdf8db1cb1349549838de1e5a4e9258d1094aa1?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
图线宽度
图线分为粗细两组,一般粗线是细线的两倍
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/574e9258d109b3de0bd8d212c0bf6c81800a4c60?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
CAD软件图层中线宽
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d009b3de9c82d15855e56fcb8c0a19d8bc3e4260?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
CAD定位轴线用点划线,也就是经常用的中心线!如图所示:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/58ee3d6d55fbb2fb6b436f68434a20a44623dc5b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
在CAD制图中,我们常用的线型很多,都可以通过CAD里面的图层命令(la命令)来加载。加载方式就是:执行la命令——新建图层——选择线型——加载线型。如图所示:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/bba1cd11728b471003f9c9b6cfcec3fdfd0323f1?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
CAD中常用的线型介绍:
粗实线用来画可见轮廓线、可见棱边线、相贯线、螺纹牙顶线、螺纹长度终止线、齿顶圆线、表格图和流程图里的主要表示线、金属结构工程的系统结构线、模样分型线、剖切符号用线。
粗虚线用来画允许表面处理的表示线。
粗点划线用来画限定范围表示线。