Building a 3d model on rhino5 of an axis head to run some tests

A longtime ago I’ve learned rhino at school and that’s the reason I used it for these task.

First I started by drawing a circle, than using offset curve I drew more concentric circles that I copied to a certain distance, by making a line and using mirror in the mid point of that line. From there i made more horizontal and vertical lines using some of the above tools, and used trim to take out the some parts off the lines leaving behind just some out lines do extrude my model.

Press Fit

I started my press fit task based on a triangle as base material I used some old 3mm acrylic from a store front.

2nd - some basic ideas I already have in mind…( at this point everything is changeable):

Motors - I intend to use dc motors for many reasons, the 1st one being they are more common, then it's easier to buy a used powerful one. And, as I recovered many encoders from hp printers, I can get the proper positioning feedback I need; and the 2nd reason is that I'm going to learn how to read and control input and output devices, nothing better than combine them both on my final project. With hi-torque, both stopped and in motion, good gear reduction, hi-durability and being available as cheap used parts, I found car window and windscreen wiper motors to be apparently ideal for my project…

press fit

I started my press fit task based on a triangle, as raw material I used some old 3mm acrylic from a store front.

With this 2 limitations and with some "Inca inspiration" I started dreaming about a modular lamp that is still a work in progress, but as press fit was the the real task at hands let's try the press fit I designed for the module.

At first I drew a snap fit, but I realized it was too small and easy to break, so I changed it to a more conventional press fit and added it a little security deformation at the edge.

After 2 trials I found the looseness to be 0.05 mm and made this aleatory figure

With this done I started another lamp protect based on gear friction and some security press fit

see https://drive.google.com/folderview?id=0B-zSpF8Sy3QLM0pIZmw4c1lRb1k&usp=sharing for files