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.

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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…

Applications and Implications

So, I am building a two axis milling machine as a prototype and bench assay for a full-fledged five axis milling machine. Able to sculpt 3D objects with the thickness as a fourth dimension. This kind of project has been done previously in many different approaches, unfortunately only a handful of them are open-source I will be using a wooden structure, where there will be one windshield wiper DC motor; coated and uncoated steel wire; several pulleys; Used HP printer slide systems and some printed components. As this is supposed to be a low budget project, I will be using used car and HP printer parts ; bike brake cable and Wood leftovers. Most of the parts are salvaged from other equipment at no cost, only the wire for the 3D printer had to purchased.

 

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

Guilherme Moreira | 18-01-2014 | 04:46 AM | Lisboa | Portugal | para Fab Academy 2014 (pt)