Edit 07/25/2014: Please see the linked thread for information on Wrap issues using some equation curves. Another equation curve approximation error A not so quick video on the technique of creating springs without fussing with the helical sweep and multiple pitch setting. I found it difficult to create a good representation of a closed end spring, and also the closed and ground version. This video shows how to make a closed and ground spring and how to quickly tweak it to the exact shape you want to show. There are several techniques throughout this video, so don't miss the little detail... How to define the initial sketch finding the core diameter vs the known ID or OD. How to manage the known parameter. In this case, the OD, height, and the wire dia. were all known's. Using the Coordinate system in the Wrap Section. You might even opt for sketching in the section starting at the bottom of the cylinder. Using Pi*D*No. of Turns to manage the overall swap. Remembering to save the hidden layers. Tweaking the Wrap Section to maximize accuracy. Of course, if you make a lot of springs, you want to use more relations to automate this process somewhat. Hope you find this video useful. Please -like- this document if you do. Video Link : 4144

17-Peridot

Question

Closed and Ground Spring - Alternative to Helical Sweep

Forum|Forum|13 years ago
July 15, 2013
14 replies
11044 views

Edit 07/25/2014: Please see the linked thread for information on Wrap issues using some equation curves. Another equation curve approximation error

A not so quick video on the technique of creating springs without fussing with the helical sweep and multiple pitch setting.

I found it difficult to create a good representation of a closed end spring, and also the closed and ground version.

This video shows how to make a closed and ground spring and how to quickly tweak it to the exact shape you want to show.

There are several techniques throughout this video, so don't miss the little detail...

How to define the initial sketch finding the core diameter vs the known ID or OD.
How to manage the known parameter. In this case, the OD, height, and the wire dia. were all known's.
Using the Coordinate system in the Wrap Section. You might even opt for sketching in the section starting at the bottom of the cylinder.
Using Pi*D*No. of Turns to manage the overall swap.
Remembering to save the hidden layers.
Tweaking the Wrap Section to maximize accuracy.

Of course, if you make a lot of springs, you want to use more relations to automate this process somewhat.

Hope you find this video useful. Please -like- this document if you do.

Video Link : 4144

General

Show previous replies

T

TomD.inPDX

Author

17-Peridot

I have had good luck with wrap but you do have ot be careful will the sketch going "off the ends" of the surface. You can see that in the spring sample, I wrap right up to the edge of the surface. If you post a discussion with your part attached, I can take a look at it and see if it is WF5 that is the problem or something else.

B

BrentDrysdale

12-Amethyst

Thanks Antonius.

Was fiddling with helical sweep and it has been a long time so though I could easily make threads and a simple open ended compression spring I couldn't get the closed end to work like I wanted. Had a search and saw this from you and it was pretty simple. I keep forgetting about Wrap.

Just one thing you probably already thought of after making your video is to use datum planes at the ends of your original extruded surface (or some other offset and solidifying these to "grind" the ends of the coil. Nicer than having to make the cutting rectangles of some larger but random size then making it through all in both directions.

Regards, Brent Drysdale

R

ronitkaza