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rdjavi 
Newbie
Joined: 30.Jan.2014
Location: Bosnia Hercegovina
Using: AutoCAD2014
Status: Offline
Points: 12
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 Topic: How to draw thiss shape
Posted: 01.Jun.2016 at 19:24 |
Can I get some help how I draw shape like in image below? This bulges is problem for me.
Edited by rdjavi - 01.Jun.2016 at 19:25
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John Connor
Senior Member
Joined: 01.Feb.2011
Location: United States
Using: AutoCAD 2018
Status: Offline
Points: 7175
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Posted: 01.Jun.2016 at 19:47 |
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The "bulge" appears to be helical. Is it? Is the object itself cylindrical or tapered?
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"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>
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rdjavi
Newbie
Joined: 30.Jan.2014
Location: Bosnia Hercegovina
Using: AutoCAD2014
Status: Offline
Points: 12
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Posted: 01.Jun.2016 at 20:19 |
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The object is cylindrical and bulge is helical only to the longitudinally bulge which runs the entire length and which divides the object into two parts which is why I can not draw simple helix and with swip command draw deired shape.
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philippe JOSEPH
Senior Member
Joined: 14.Mar.2011
Location: France
Using: AutoCAD Mechanical 2017
Status: Offline
Points: 1493
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Posted: 02.Jun.2016 at 07:16 |
Hello rdjavi and John, you can find in the CAD/BIM Blocks library the file : Dywidag.dwg from Vladimir but it's 2D.
Edited by philippe JOSEPH - 02.Jun.2016 at 07:20
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John Connor
Senior Member
Joined: 01.Feb.2011
Location: United States
Using: AutoCAD 2018
Status: Offline
Points: 7175
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Posted: 02.Jun.2016 at 11:28 |
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Too bad the drawing bears no resemblance to the object that is pictured in the first post of this thread.
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"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>
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John Connor
Senior Member
Joined: 01.Feb.2011
Location: United States
Using: AutoCAD 2018
Status: Offline
Points: 7175
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Posted: 02.Jun.2016 at 13:09 |
 rdjavi wrote:
The object is cylindrical and bulge is helical only to the longitudinally bulge which runs the entire length and which divides the object into two parts which is why I can not draw simple helix and with swip command draw deired shape.
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You could but the real problem would be that it looks like the bulge is tapered at both ends which means that extruding a simple profile (ex. - a circle) along the helix wouldn't give you what is shown in the image you posted. Your bulge looks like a "slug". The bulge is tapered is it not?
Edited by John Connor - 02.Jun.2016 at 13:18
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"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>
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rdjavi
Newbie
Joined: 30.Jan.2014
Location: Bosnia Hercegovina
Using: AutoCAD2014
Status: Offline
Points: 12
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Posted: 02.Jun.2016 at 19:23 |
Thanks to everyone for the help!
John, yes bulge is tapered and looks like slug. I find the way to draw thiss shape. I draw helix only for one slug, and on ends of helix I draw the small circle and on the centar helix I draw the bigest circle end use Loft command to make a slug shape with helix path. Then I copy slug to the end of the object end switch to the Top view end rotate all slugs with copy option to the other side of object. Then I use Union command to union the slugs end object. 
Edited by rdjavi - 02.Jun.2016 at 19:24
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John Connor
Senior Member
Joined: 01.Feb.2011
Location: United States
Using: AutoCAD 2018
Status: Offline
Points: 7175
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Posted: 02.Jun.2016 at 20:24 |
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And the two ends curve opposite each other like the letter "S"?
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"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>
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