SPRING -VARIABLE PITCH

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 From:  lyes (BLYESS)
4414.1 
HI HERE A TIP HOW TO MAKE VARIABLE PITCH HELIX;
EXTRUDE (SET-PATH) , TRIM WITH HELIX -SEPARATE SURFACES SHOW PTS MOVE POINTS EXTRACT CURVES REBUILD CURVE


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 From:  Mike K4ICY (MAJIKMIKE)
4414.2 In reply to 4414.1 
WOW!!!!! :-0

Thanks Lyes! That's freakin' awesome - I must try.
That one on the right is sweet looking.

...now if only I could get the spiral to "follow a path!" ;-)
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 From:  lyes (BLYESS)
4414.3 In reply to 4414.2 
HI MAGIC HERE HOW TO DO THE BLUE ONE.

CREATE CYJINDER AND 2 HELIX. FILET THE CYLINDER WITH G2 0.7.
TRIME THE 2 HELIX AT THE EDGE OFF THE FILET
SEPARATE THE FILET
PROJECT CLOSEST ON THE FILET SURFACE
JOIN AND REBUILT CURVE


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 From:  Mike K4ICY (MAJIKMIKE)
4414.4 In reply to 4414.3 
Oh yeah... that's pretty ingenious.

Thanks!
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 From:  lyes (BLYESS)
4414.5 In reply to 4414.4 
HI HOW ABOUT THIS ONE A HEART SHAPE SPRING IT LOOKS BETTER THEN A CYLINDER ONE
IS THERE ANY APP TO SUMILATE IT




UPDATE:
I HAVE FOUND RHINO PLUG IN CALLED (SCAN AND SOLVE) BUT IS NOT FOR SPRINGS ITS GENERAL SHEER AND STRESS TEST
I HAVE TRIED IT AND THE RESULT IS THE HEART SHAPE SPRING RESISTE TWICE THE STRESS HAVE A LOOK
2 HTML FULL REPORT CYLINDER AND HEART SHAPE SPRING

EDITED: 6 Aug 2011 by BLYESS


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 From:  Mike K4ICY (MAJIKMIKE)
4414.6 In reply to 4414.5 
Lyes, that rendered spring assemble in the gallery is sweet!
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 From:  Greg (HORSEGUY44)
4414.7 In reply to 4414.6 
Lyes, we once wondered if a square spring could be made for a specific applications. So we took out some square stock and wound the wire around it...

Unfortunately the "spring back" tendency of the wire, the amount it opens back up from the internal winding form, meant that the corners of the square were all over the place when it relaxed! It looked pretty cool, as the amount of spring back was the same throughout, but the lengthwise section of the spring wasn't a consistent square anymore. The only way to make a non-circular spring who's corners remain lined up after spring-back would be to create a spiral rod bending form with the exact rotation/twist needed for the spring back of the chosen wire diameter. Gives me a headache just thinking about it, but that form could probably be one in MoI!
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