Thursday, September 25, 2008

CAD drawing skills——How to approach such as axis drawing

CAD drawing skills with the CAD software——How to approach such as axis drawing From the beginning of R10, such as the axis in order to draw the way often is not the structure of the painting, such as the first choice. Despite such as AutoCAD Shaft there, but if it is R10 or later, will feature the use of 3D structural model, and then type DVIEW or VPOINTS axis, and so on the way to observe the design. The features such as AutoCAD Shaft SNAP order to visit his son Style options such as axis control mode, this option under the standard or optional, and so on the way axis. Once inside the shaft and so on the way, Ctrl E to activate the top, right or left. Upon obtaining the correct plane, you can paint the object. 3D functions such as axis and the difference is the way to capture 3D CAD software generated by the real-size model, and the shaft, and other entities to capture a distorted way, in fact, the entity that is not the way.

Wednesday, September 17, 2008

AutoCAD Tips:Convert a 3D solid to a 2D drawin

This AutoCAD tip explains how to Convert a 3D solid to a 2D drawing with a hidden view, but you can create a wireframe as well. It uses the SOLPROF command to create a profile. By transferring the results to another file, you get a solely 2D  CAD drawing.

1.  Create the 3D model. 
2.  Set up the hidden view that you want.
3.  Start the UCS command and use the New>View option to set the XY plane parallel to the view.
4.  Choose a layout tab. By default, a viewport is created automatically. Otherwise, choose
View>Viewports>New View (MVIEW command) and create a viewport.
5.  Double-click inside the viewport to switch to model space.
6.  Type solprof on the command line At the prompt, select the 3D model and accept the defaults (Y each time) for all three prompts. You should now see a wireframe profile, as shown here in a viewport. (The profile is one object.)

7.  You'll now see two new layers in the Layer Control drop-down list. One starts with PV-
and could be PV-ad, PV-125, or any suffix. The other starts with PH- and has the same suffix. The PV layer contains the front parts of the profile (V stands for visible). The PH
layer contains the hidden parts (H stands for hidden). Make the PV- layer the current layer.
8.  Freeze all other layers. Now you see the hidden view. If you want a wireframe, don't freeze the PH- layer.
9.  Press Ctrl+C and select all objects (which won't include the frozen layers) to copy the
profile to the Windows Clipboard.
10. Start a new drawing.
11. Press Ctrl+V to paste in the profile and specify any point to place it. You should see the profile  looking  exactly  the  same  as  before.  (If  the  angle  looks  wrong,  reproduce  the viewpoint you had in the previous drawing and set the UCS to View again.)
12. Start the EXPLODE command (because the profile comes in as a block) and select all objects. (Skip this step if you want to leave it as one object.)
13. The new profile may not be the same scale as the original. If not, measure any length in the original 3D drawing.
14. Use the SCALE command and select all the objects. Then use the Reference option. At
the prompt to specify the reference length, specify the beginning and end of the length you measured, that is, the same object in the new 2D drawing.
15. At the prompt to specify the new length, enter the length that you measured to scale the 2d model to that new length.

Now, You completed the conversion of a 3D solid to a 2D  cad drawing. Can you work in this AutoCAD tips?

Wednesday, September 10, 2008

Export X-Y-Z coordinates of AutoCAD drawing blocks?

Somebody want to know How to Export X-Y-Z coordinates of Auto CAD drawing blocks? In fact,
there are several ways to export a list of XY or XYZ coordinates of AutoCAD blocks/symbols or other objects in an AutoCAD drawing.

In all AutoCAD versions you can use the ATTEXT command and prepare an export template containing the X and Y coordinates of the reported blocks (see AutoCAD User Guide).

In a much more user friendly way you can use the EATTEXT (resp. DATAEXTRACTION) command (wizard) to report AutoCAD drawing block information from the current drawing (plus other drawings). Start the wizard and confirm all default values (name your DXE file in Step 1, use only blocks in Step 3, include the position properties in Step 4). In Step 6, choose the export to an external file (XLS, MDB, CSV, TXT).


What is 2D CAD ?

2D is called as the creation, display and manipulation of objects in the computer in two dimensions .2D Cad Drawing programs and 2D CAD programs allow objects to be drawn on an X-Y scale as if they were drawn on paper.Although 3D images can be drawn in 2D CAD programs, their views are static. 2D CAD can be scaled larger or smaller, but they cannot be rotated to different angles as with 3D objects in 3D Cad programs. They also lack the automatic lighting effects of 3D programs. Any desired shadows must be created by the artist using color fills or gradients.

Thursday, September 4, 2008

2D Cad Drawing for Conversion to 3d Cad Drawing

How to Prepare a 2d Cad Drawing for Conversion to 3d Cad Drawing for Topcon Rovers?

This is just one of an assortment of ways to simplify the 2D Cad to 3D conversion process that it takes to create a fully functional 3D map. The most important step in minimizing polylines while at the same time maximizing the use of memory.

1. Using AutoCAD, open the 2-D *.dwg file that you received from the architect or engineer. 99% of the time the architects or engineers will e-mail you or otherwise just give you a copy of their dwg files without any further charge .
2. Make a backup copy naming the project whatever you wish. For TopCon users; file naming is crucial at this stage. You want to break the project down into groups. You should really start with the very first thing that you're going to do on the project...

3. Isolate that specific layer. Most likely the operators will have already cleared the area so we are dealing with a blank slate. You should always start with either your biggest cut or fill or your shortest haul distance. For this example, it will be creating a 2 lane highway. We need to first create a file showing

So, Maybe you can Prepare a 2d Cad Drawing for Conversion to 3d Cad Drawing for Topcon Rovers