Feeder design with a SG90 micro servo

[Trampas Stern]

I am not a mechanical CAD guy but I have been working on a feed design using an SG90 servo, of course servo would need modification for continuous rotation. 

My goal is to make an automatic feeder with as few moving parts as reasonable, as thin and as cheap as possible. 

The basic design is that the servo will turn the feed wheel as shown below. The feed will have a encoder similar to Misfit Tech's Smart Steppers (or use optical).  Then there is option of pulley off the feed wheel to use a rubber band belt to drive take up reel or maybe use another servo. 

The deign would be around ~12mm thick for a 8mm feed reel. 

From rough calculations it should provide ~10 parts per second. 

If there is someone out there who is better at mechanical CAD than me I would be happy to work together. I can do the electronics and get mechanical prototypes, however the CAD is slow learning for me... 

Thanks

Trampas

[Rich Obermeyer]

What CAD are you using?

--
You received this message because you are subscribed to the Google Groups "OpenPnP" group.
To unsubscribe from this group and stop receiving emails from it, send an email to openpnp+unsubscribe@googlegroups.com.
To post to this group, send email to ope...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/openpnp/520a7bf3-b378-4ed7-ab8d-cba5c402bbfc%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--

Rich

[Trampas Stern]

Fusion 360... 

I have also tried FreeCAD, but switched to Fusion 360. However the gears in the design were done with an OpenSCAD script. 

On Tuesday, January 10, 2017 at 3:36:51 PM UTC-5, Maddog wrote:

What CAD are you using?

On Tue, Jan 10, 2017 at 12:23 PM, Trampas Stern <tra...@gmail.com> wrote:

I am not a mechanical CAD guy but I have been working on a feed design using an SG90 servo, of course servo would need modification for continuous rotation. 

My goal is to make an automatic feeder with as few moving parts as reasonable, as thin and as cheap as possible. 

The basic design is that the servo will turn the feed wheel as shown below. The feed will have a encoder similar to Misfit Tech's Smart Steppers (or use optical).  Then there is option of pulley off the feed wheel to use a rubber band belt to drive take up reel or maybe use another servo. 

The deign would be around ~12mm thick for a 8mm feed reel. 

From rough calculations it should provide ~10 parts per second. 

If there is someone out there who is better at mechanical CAD than me I would be happy to work together. I can do the electronics and get mechanical prototypes, however the CAD is slow learning for me... 

Thanks

Trampas

--
You received this message because you are subscribed to the Google Groups "OpenPnP" group.

To unsubscribe from this group and stop receiving emails from it, send an email to openpnp+u...@googlegroups.com.

To post to this group, send email to ope...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/openpnp/520a7bf3-b378-4ed7-ab8d-cba5c402bbfc%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--

Rich