Autodesk Inventor

[#1]

Can’t seem to get it to work. No calculations required, just a 3d model.

Want a spring od 18mm, wire dia 2mm, with 52 coils, with something like a full loop or half hook hook type.

The dimensions I have entered in don’t seem to work.

What is the secret here?

Mike K

Joburg, South Africa

[#2]

Hi Mike

Could you post your data here？ Is there any error message in the extended window of design dialogue?

Without considering calculation results, I tried and got the result if the parameters were suitable.

[#3]

Thanks Jingyi

I got it eventually, by using suitable parameters.

I notice that using design accelerator you cannot (or not that I could see anyway) draw the spring in its free position (ie fully closed)

I therefore also drew it in ipt using conventional methods

I did notice that I had to use a pitch of 2.01mm (slightly more than 2mm) to prevent self intersection of solid bodies.

Also I was able to draw the hook ends a bit better than they come out in design accelerator. Also,  In accelerator the hook ends always come out parallel to each other.

However I am not sure what the practical reason is for not having them parallel to each other (as I have drawn in spring 01 .ipt)

However all being said and done, I don't know how the springs are actually manufactured and what a manufacturer would need to know. I am assuming the tension spring would be fully closed ( ie as I have modelled it without the design accelerator in spring01.ipt) when it is not under  load.

I think I will speak to the spring manufacturer tomorrow to ask him a few of what his required parameters are

Mike

PS I can't add all my attachments - they are too big combined even when  I zip, Therefore I will only add one+ 2jpegs