Hi guys.
I'm in the process of conceptual design of a fixed gantry CNC router and would like your feedback.
Firstly, my goals. What I want to machine capable of. Some are optimistic I know.
+/-0.005" machining capability.
Machine up to and including aluminium.
To be used as a desktop machine in an apartment.... (will try fully enclosing machine with soundproofing).
It will be an all aluminium design using 5083 plate and 6061 T6 angles/channels bolts together and machined surfaces to mount rails.
Ideally I would've liked to have used rectangular hollow sections, but the maximum wall thickness I could find locally was 0.25" which seemed a bit thin for my liking.
The gantry is made of 2 plates bolted to 2 c channels to create a box section. I've hidden some parts in one of the views so you can see.
All will be bolted together with interference fit bolt and nut (no thread tapping).
Hiwin HGR20 rails and HGH20 bearings on all axis.
1605 ballscrews on x and y, 1205 ballscrew on z.
2.2KW water cooled router spindle
Cutting area: 12" x 24"
Cutting height: 3.5"
Overall machine dimensions: 25" (L) x 33" (W) x 22" (H)
At a guess, this machine will cost me around $5k AUD.
I will have to find a local shop to do the machining for me which might cost a bit.
Would love any feedback from previous experiences.