Thread Content
How to quickly master Auto CAD drawing software CAD, the abbreviation of Computer Aided Design, means computer-aided design. Adding Auto means that it can be applied to almost all drawing-related industries, such as architecture, machinery, electronics, astronomy, physics, chemical industry, etc. Among them, only the mechanical industry has made full use of the powerful functions of Auto CAD. For architecture, we only use a smaller part of it, and if it is not used to draw three-dimensional architectural appearance and interior effects, then the tools in CAD we use are even pitiful. Moreover, for those who do not pursue accurate architectural appearance and interior effects, there are currently more convenient 3D software available, such as 3DS Max, 3DS VIZ, etc., which are better than CAD in terms of ease of use and final effect. However, no other software can match CAD for computer-aided design that pursues precise dimensions, such as designing mechanical parts and drawing construction drawings. It is impossible for you to use software such as 3DS Max, Photoshop, CorelDRAW, etc. to draw a construction plan quickly and accurately (or even impossible). Because of this, it is very simple for engineers to learn CAD. Because there are very few CAD commands used to draw construction plans. However, if you have * I am used to manual drawing, and this is my first exposure to CAD drawing software. There is one thing I must understand.: Computer drawing and manual drawing are two completely different concepts, although the results they produce are basically the same. Manual drawing is a drawing on a drawing of a limited size, but the actual building size is simply not proportional to the size of a drawing. you must * * Only by reducing the size of the architectural representation can a large building be completely drawn on one drawing, and the "drawing scale" was born. For CAD, the drawing space is an infinite three-dimensional space, no matter how big or small (as big as a galaxy, as small as an atom), it can be represented. The monitor only displays part of the drawing space. You can have graphics as large as galaxies or as small as atoms occupy the entire screen. You can also display galaxies as a point or have an electron in an atom occupy the screen. “Drawing scale" therefore fails. If you still come to study with the concept of manual drawing * CAD drawing program, this will not only waste your precious time, but also make you fearful, thus hindering you from mastering CAD. if you start learning * CAD drawing software, please remember: Draw on the computer using actual dimensions. As for how to print out the drawn graphics so that you can use a scale to measure the approximate size of the drawing, please continue to read below. Now, I will tell you the basic commands you need to master for 2D engineering drawing. If you carefully observe a construction plan, you will find that most of the graphics are straight lines, with a small number of arcs and circles. In fact, polygons are also made up of straight lines. Therefore, you only need to use the "Line" drawing command in CAD to start preliminary work. It's that simple. Then, you find that there is a parallel relationship between the lines and there is a certain distance between them. Using the "Offset" command, you can generate parallel lines from the source line segment and specify the distance between the parallel lines. Another problem solved. When you need a line with width, please use "Polyline". You can specify the starting and ending width of a Polyline and draw lines and arrows with width. Next, you find that there is a wire inside the wall where it intersects. Use the "Trim" command to remove it. To extend one line to another, use the "Extend" command. Do you want to create rounded or beveled corners where two intersecting lines intersect? “Fillet" and "Chamfer" can help you. Found the same object in the drawing? By the way, using the "Copy" command will get you twice the result with half the effort. Objects with the same shape and opposite directions, the "Mirror" command can help you ； “Rotate" command to adjust the angle of the object arbitrarily to make it easy for you. Text input? “DText" command is simple and useful. To change text, the "DDEdit" command is small and easy to use. “Dimlinear" horizontal and vertical dimensions are so simple that you can't even think of it. “Dimcontinue" to mark axis quickly and accurately. “Circle" command lets you draw * * Small circle. Want to capture objects while drawing? Shift+right mouse button opens the capture floating menu. Okay, stop here. For beginners, these commands are enough for you to draw general construction drawings. Don't believe it? Ask any skilled draftsman. How about it, it can be done easily within an hour. Now, you can claim to “know how to use” CAD drawings. To improve work efficiency, please learn the concept of "layers". There, there are line types and colors. When you are familiar with the layers, you will find that the floor plan that used to be divided into several drawings can be drawn in the same place by simply turning off/on certain layers. Found a problem with inputting Chinese characters? “Text Style” dialog box to relieve your worries. Need to change the label format? “Dimension Styles” dialog box solves everything. jointly and severally * Please finish the previous content in one afternoon. What? Is it difficult? Brother, don't let me say you don't have perseverance and are a fool. “Drawing Aids” dialog box needs to be learned * ； “Units Control” dialog box needs to know ； How to make a tile and use it is a bit cumbersome ； Other annotation forms take time ； “Limits" command specifies the area you want to display ； Format brush can brush out parameters such as layers, line types, colors, fonts, etc. It is very easy to use. ； “The "Print / Plot Configuration" dialog box opened by the "Plot" command must be studied vigorously. If you know at what scale you will draw the drawing, you can use "PolyLine" to draw thick and thin lines. If the proportion of the drawing in the future is uncertain, please use the line color to specify the thickness of the line. Be careful not to let a line with a defined thickness of a certain color hide under a line with no defined thickness. You won't be able to see the problem in the print preview. You can set it freely in the "Pen Assignments..." button in the "Print / Plot Configuration" dialog box. It all gives you a day to master without any harshness. In less than two days, you can already use CAD to do your own thing. All that's missing is experience and speed. Speed is gained through practice, experience is gained through experience, and all of this takes time. Of course, not very long. At this point, you will definitely not be satisfied with your current level, unless you are too busy at work to study or you do not need to use most of the other functions and commands in CAD. If you want to fully master the Auto CAD software, pick up a suitable reference book and study it for ten and a half days, you will definitely feel extraordinary. The future is bright, the road is tortuous, and there is no limit to learning. Don't think that it is easy to bully just because you have learned to use CAD to draw construction drawings so easily. To be honest, Auto CAD is a large and complex application. It is the hard work of Autodesk experts and the crystallization of the experience of many enthusiastic users. What? What a shame! It's time to pour some cold water on you. Do you know the difference and uses of paper space and model space? How to define complex linetypes yourself? Materials, lights, textures, scenes, backgrounds, fog effects... can you use them? How to build accurate 3D models? How to use the UCS system? How to use AutoLisp language for secondary development of Auto CAD