Encyclopedia of AutoCAD commands
One: Drawing basic graphic objects
1. Basic common commands
Under normal mouse operation, the left key represents the function selection, and the right key represents the confirmation of the "Enter" function.
In the case of a 3D mouse, the scroll key plays the role of zooming. Drag operation is to hold down the left mouse button and drag the mouse. But when selecting a window, dragging from left to right is different from dragging from right to left.
Window selection: drag and drop from left to right to select objects in solid boxes, and box selection: drag and drop from right to left to select objects in dotted boxes and intersecting objects.
2.Esc Cancel Operation: When the command is being executed, you can stop the operation of the command by pressing the Esc key.
3. Undo the abort operation: autocad supports infinite undo operation. Click the Undo button or enter u and press Enter.
4. Four minutes later. AutoCAD, the space bar and the right mouse button are equivalent to the Enter key, which are all confirmation commands and are often used. Always check the prompts in the command area and follow them.
5. Several operations of drawing graphics This is the drawing toolbar of cad, which is often not needed when using three-dimensional calculation, so the toolbar has always been hidden. In order to understand the concept of cad, here are some basic commands.
6. Draw a straight line: click the toolbar "straight line" command, or enter l in the command line, and then press Enter. Click a point in the drawing area or directly enter a coordinate point, press enter, then specify the next point, press enter to repeat the next point, or press Enter to end the operation. Or enter c to close.
Example: Draw three sides of a triangle: command line input: l Enter Specify the first point: click a point: enter. Click another point repeatedly, and then press enter. Input: c enter. The line closes to form a triangle.
7. Making a polyline: A polyline is a special straight line connected by one or more straight lines and arcs, and can also have the characteristics of different widths.
Shortcut key: PL. Commonly used to define special-shaped sections, hand-drawn walls, beams, etc. In three-dimensional calculation.
For example: draw the section of special-shaped column. Enter PL and press enter. Specify the next point, enter w (width), 1, and press Enter to change the width of the polyline to 1.
Enter the shortcut key F8 and use the orthogonal function of cad to keep the straight line horizontal.
Input: 500. Input: a, start drawing an arc, and click another point to draw an arc. Input: l, switch to draw a straight line, click a point and draw a straight line.
Input: a, draw an arc and close the starting point into an interface shape. Next, you can define a column with a specially shaped section to select multiple segments.
Second, the modification of graphic objects.
Because the three-dimensional computing software improves the drawing function according to the calculation characteristics, it does not need to master too many drawing commands, but the modification commands are used frequently.
Commonly used are:
1. Delete: It conforms to windows operation, and the Del key is the most convenient.
2. Copy: Copy one or more objects to the specified location, or copy one object continuously. Shortcut: CP. Example: Copy a column. Click or enter CP, select a column, press Enter or click the right mouse button, specify the base point, click the center point of the column with the capture function of cad, and right click.
Type 1000 and press Enter. A column was successfully copied. After selecting the object, click M according to the prompt to make multiple copies.
3. Move: shortcut key: m. The operation is the same as "copy", but different from the copy function, copy is to add an object, and move only changes the position of the object.
4. Trim: shortcut key: TR. You can cut unnecessary parts according to the specified boundary. Click the pruning tool or enter TR, prompting to select an object, selecting a boundary object, right-clicking, prompting to select an object, left-clicking to select an unnecessary part after cutting, right-clicking and OK.
5. expansion: shortcut key: ex. Used to accurately expand the extended object to the target boundary. The operation is the same as cutting. The characteristics of these two commands are: first select the target boundary object, and then select the modified object.
Three: Object capture
It is difficult for users to control accurately with mouse and eyes when drawing, and this problem can be solved by using the capture function of cad. Object capture is a transparent command, which means a command that can be used at the same time without quitting other operations. You can use the Snap command when drawing other graphics, such as lines.
Object capture is set at the bottom of the software interface. Right-click Object Capture and left-click Settings. After the dialog window pops up, you can set the required grabbing methods one by one.
Four: orthogonal mode
Orthogonal mode is one of the commonly used tools in drawing, and the shortcut key is F8. You can use F8 test when drawing a straight line.
V: layer mode
The layer is like transparent sulfuric acid paper. In order to manage all the objects better, each piece of paper is painted with different types of objects, such as walls, columns and beams. In order to avoid too complicated graphics, the wrong choice was made. You can take out what you don't need to see first, that is, close it. You can also lock, freeze or set different colors and so on. Shortcut: Los Angeles
Six: View Zoom Command
1. Real-time translation: shortcut key: p. Click or enter p, enter, or press the scroll key of the 3D mouse, and the mouse will turn into a hand icon. Press the left mouse button to drag and pan the graph.
2. Real-time zoom: Real-time zoom can be achieved by scrolling with the scroll key of 3D mouse. You can also click and move the mouse back and forth to zoom in in real time.
3. Window Zoom: Click Window Zoom, press the left mouse button and drag the box to select the area to zoom.
4. Zoom to the last time: click, and the view will revert to the last zoomed view.
5. Range Zoom: Click to display all the graphics on the screen and fill the whole screen to the maximum extent.
The above is about "AutoCAD Command Encyclopedia". I hope this tutorial is useful to you. Try it with the tutorial operation. Click this link to learn more about CAD tutorials: