3D Modeling Application: Drawing a 3D chain
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Author | Ahmet Odabaş |
| Profession | Mechanical Constructor | |
| Draftsman | ||
| Location | İstanbul, Turkey | |
AutoCAD 2007 and higher versions
Hi dear bloggers,
Today we are going to learn how to draw a 3D chain in Autocad. Let me mention first, we will draw the chain in 3D instead of drawing in 2D and moving it. The chain photo in the figure is added to the drawing by Raster-Image command.
Figure-1 A 3D Chain
Open a new drawing and switch to isometric view by clicking View>3D Views>SW option. Draw the chain link in the Figure 2.
Figure-2 Drawing the chain link
Make the link POLYLINE after eliminating dimension and axis lines by turning the axis and dimension lines off in “Layer Control” Window. There are articles about how to make a polyline. You can do it by using PEDIT and BO commands. EXTRUDE the link by 2 units like in the figure 2. After extruding it, copy the link, thus upper and lower faces are formed. For the connection between links; draw a circle with a diameter of 9 units and offset it 15 units ( pink colored ) and move it from its center to the center of the lower link hole.
Figure-3 Extruding the Chain Link and Copy Process
Draw a CIRCLE with 7 units of diameter and extrude it by 1 unit. MOVE it from its center to the center of the upper link. This is of course representative, in case there is a rivet with both sides exploded. I do not need to draw because there is no direct effect for modelling. You can arrange the links in a row by copying them or make a rectangle ARRAY by 3DARRAY command.
Lastly, our chain is ready when you render it (optional).
Figure-4 The Rendered image of the chain
May it be easy.
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February 11th, 2008 17:14
Dear Mr. Ahmet,
I am trying to draw an elliptical gear (in 2D) I made the ellipse in x and y axes and even I draw a teeth also to
make it Polar Array. So, the remaining tooth will be inscribed inside the ellipse. But I don’t have the option to select the ellipse to make array of tooth inscribed inside an ellipse. Could you please advice me how to make an elliptical spur gear in Autocad 2008? Thanks in advance.
February 15th, 2008 11:29
GOOD JOB.
BUT NOT HELPFULL FOR NEWBIE,
ALSO MAKE UR TUTORIALS FOR DOWNLOAD. SO WE CAN USE OFFLINE
STEP BY STEP PROCESS WOULD HAVE BEEN HELPFULL
February 15th, 2008 22:50
@mansur
For make polar array ; You use of UCS system with some UCS of objects.Your problem this.Easy come! Your pleasantly
February 16th, 2008 16:41
congrulations mr.Ahmet ! very beatiful tutorials..Thank you for this application..
February 19th, 2008 09:18
bus 3d figure in autocad command
April 21st, 2008 19:43
Sorry for the noobie question but im new to autocad.
I have drawn the circles all to size but how do i get the 50 radius in the right place??
do i do it as an arc?? please can sumone help??
Thanks!
April 22nd, 2008 09:28
[…] 3D Modeling Application: Drawing a 3D chain […]
April 22nd, 2008 22:30
@macca
for make 50 mm radius ; Before draw a 50 mm circle you..but circle draw a methot TTR chose…
June 2nd, 2008 19:07
To anyone.
I need an elliptical sprocket, 3″X 11″. 1/2″ separation at pivot and 5/16 arc for the chain seat. It’s 1/8″ single speed bicycle chain. It’s an extreme ellipse I know but need for my project. No one seems to be able to make one for me .
Thanks Bob