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 * flat spiral thead


FLAT SPIRAL THEAD


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AFA Kevin
4 DS Level
1660 Points
0 Followers
8 question_answer
25 Apr 2022 06:32

I have done threads on nuts and bolts. I now want to creat a thread across a
flat serface, spiraling towards the centre.  there apears no tutorials on this
aspeck.  I'm not sure if im using the correct terms soI have attach a picture of
what I would like to achieve. The item in blue.  It's for a self centring chuck.

 

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self centring chuck.jpg
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3 COMMENTS

TAH1712
174DS Level
86675Points
13Followers

25 Apr 2022 09:32

The answer in this probably only comes from some experience with DSM and
although there's all types of spirals in the new equation tool ( producing
curves to follow) , here's a simple way showing a few tools DSM has.

The trick to get a Spiral is to first make a tapered helix of the necessary
pitch at 45 deg taper.

Then, project this to a plane creating the path for a tooth profile to follow.

 



 

reply
Gary13
3DS Level
1140Points
0Followers

23 Nov 2023 20:06
 * how do you produce the rectangle and or tool to pull from? Im missing this.
   Thanks Gary

reply
View 1 reply
TAH1712
174DS Level
86675Points
13Followers

26 Apr 2022 09:16

and here's a pull cut version producing a scroll plate...

reply
AFA Kevin
4DS Level
1660Points
0Followers

26 Apr 2022 23:12

Thank you, a lot of trial and error to finally get it right took most of the day
and when I finally got it the spiral was lopsided. The sketch plane to draw the
spiral was not perpendicular to the rotation axis. So I'll try and get it right
this time.

reply
TAH1712
174DS Level
86675Points
13Followers

27 Apr 2022 09:54

It's gets much quicker the more you practice.

When i started using DSM, honestly it took too long for me to fully appreciate
the automatic perpendicularity of sketch planes or planes when a curve end (
especially splines and curve points within it to) is preselected.

One other very useful thing to know is that when in a sketch, if selecting any
line, with then a Plane cmd action, a plane, perpendicular ( to the sketch ) is
made...very useful.

The XYZ world origin is very useful reference to make planes, orient
object/faces to XYZ directions and you can measure any plane / line / face
easily to it.

 

Good luck.

reply
View 2 replies
TAH1712
174DS Level
86675Points
13Followers

28 Apr 2022 00:18

An easier way... BY FAR !

Use the equations tool.



Curve type is Archimedes Spiral ( somehow 'Custom' has appeared!)

Leave values x,y and z as shown - the curve  is positioned at global zero /
world origin

Interval 't ' are the start and end positions in radians.

Parameter 'a' is the offset spacing (mm)

reply
Gary13
3DS Level
1140Points
0Followers

23 Nov 2023 19:42

how do you produce the rectangle to pull from? Im missing this. Thanks Gary

reply
Gary13
3DS Level
1140Points
0Followers

25 Nov 2023 15:24

Ok I use the equation tool and I can create the spiral and Im stuck there. How
do I create the pull tool?

Thanks, Gary

reply
View 2 replies


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