Here I will be posting my latest process in the CNC-router build.
To begin with I wanted to show the development of my router. Here are some pictures from my first steps of design.
Since this started as a school project at my university I decidet to start the build altough design was far from being finished. This was only to be able to show something functional at my final report on the project. So first of all I ordered all electronics from Probotix and started to weld and assembly the router. My friend TIG welded the main frame together. Other parts where watercutted at Hedinn. Here are some photos of the build and from the assembling and testing of the electronics.
Only few days to the final presentation my router was functioning as planned. It was kind of surprise because there where no major problems, isn’t that always the case?
Here you can see the prototype working:
Allright now I did tear it to pieces and to keep on the design where I left off.
So finally I was getting confident that my design would work. Here are some pictures I rendered from my final designs. New fram was design and the longes travel axis, wich I call the X-axis was changed. Also the Z-axis, the vertical one was designed. The X-axis was made longer.
Finally here is the stage where I am at now. The build is well under its way and I am waiting for the parts to be watercutted at Héðinn, (Where I currently work now.)
Now to see where the build is here are some picture of my frame.
I know the linear movements for the X-axis has one major weekness when machining something really hard. They would bend a little, this could be avoided tough with some measures but I wont fix this know. I think this will only be an issue when machining aluminum or similar material.
Some facts about my router:
Cutting area: 1080 x 424 x 147 (mm)
Cost: approx. 2000$
Material to be able to cut: Wood, plastic and hopefully aluminum
Motors: Nema 23 Bi-polar stepper motors 260 Oz/In (Will be upgradet to more powerfull motors in the future)
stepper driver: 8 microstepping resolution (Would like to have better resolution)
Brekout board: Isolated, possible to add the fourth axis
X-axis: Belt driven
Y-axis: Ball screw driven
Z-axis: Ball screw driven
Made from steel and aluminum
Designed using Autodesk Inventor
Controller will be EMC2
CAM software I will use is BOBCad
My spindle will be Dremel 4000 to begin with