How to draw three-dimensional drawing effect in autocad? Introduction to autocad three-dimensional drawing method

Introduction to the method of drawing three-dimensional drawings in autocad:

To put it simply, after the surface area is stretched or rotated, remember an idea, and the point movement becomes a line, the line movement becomes a surface, and the surface movement becomes a body. This art idea is applicable to 3D software in various industries. For example, if you draw a polygon and cut off the intersecting parts, leaving only the outer outline without overlapping line segments, then the area outline (available in the area function shortcut icon and menu) can then be rotated according to a certain edge to become an entity of a body of revolution, or the surface can be stretched out a specified distance in a specified direction to become an extruded body. Multiple entities can be moved and copied in AutoCAD, three-dimensionally rotated, placed in the appropriate position and then subjected to Boolean operations, merged into a whole, or cut off unnecessary parts, or only leave overlapping parts. In 3D, feature operations such as chamfering and rounding can also be performed. For more complex ones, scanning and lofting can be used to complete entities such as spirals, threads, round heavens and squares, round heavens and squares, etc. You can also extract shells to obtain hollow bodies, etc. No matter how complicated it is, you can edit points, point halos and surfaces to create a variety of shapes.

CAD three-dimensional modeling has limitations. To do three-dimensional modeling in CAD, the REV and EXT commands are generally used. The former is to rotate a closed two-dimensional object into a three-dimensional object, and the latter is to stretch a closed two-dimensional object into a three-dimensional object.

Warm reminder: When using 3D drawing, everyone should pay attention to the size of the 3D drawing matching the original image, otherwise the actual 3D drawing will not be able to reflect the original effect.