Modelling parts to fit real world products

james_kemp

Hi Guys,

Just wondering how you tackle something like the following. If you wanted to design a controller grip for an xbox controller (random example) how would you go about doing this? There is an existing shape in the real world to fit but modelling around the curves isn't something I'd know how to work out? A raspberry pi board is a lot easier as you can get a ruler on it or look up dimensions but curious how you'd go about this kind of scenario?

Thanks in advance!

James

NeilCooke

Hi @james_kemp - the only way to accurately do it (other than sawing your controller up into sections) is to scan it. In the example below, I scanned the iron with an Xbox Kinect and imported it as a mesh into Onshape and modelled around it. The quality is not very good, but it was enough for what I needed. Hope this helps.

https://cad.onshape.com/documents/16e6db3562f6d010706c7332/w/205444fb7c0078092d352c1f/e/350591dc5ae824694ff67ab4 

owen_sparks

Or have a look at somewhere like grabcad.com and see if someone has already done the hard work for you.

I'm hoping to do something similar.  Take model of Glock, cross with internal guts of a PS Move controller and you've got a VR gun that you can point naturally and has the buttons in useful places...

Cheers, Owen S.

dick_van_der_vaart

Found this on Grabcad,
https://grabcad.com/library/xbox-360-controller-black-2
Look's good, then check some major dimension's and edit in context.

bill_daniels

Great question!  So, what scanner devices are available to scan 'real-world' parts and output usable CAD files?

james_kemp

NeilCooke said:

Hi @james_kemp - the only way to accurately do it (other than sawing your controller up into sections) is to scan it. In the example below, I scanned the iron with an Xbox Kinect and imported it as a mesh into Onshape and modelled around it. The quality is not very good, but it was enough for what I needed. Hope this helps.

https://cad.onshape.com/documents/16e6db3562f6d010706c7332/w/205444fb7c0078092d352c1f/e/350591dc5ae824694ff67ab4 

The modelling on this is so clean! Very nice. I'm not familiar with scanning and importing but I think there's an ios app I can download that will work. Doing some research now!

Thanks for your input.