Hi all. I built a moving gantry router primarily out of MDF over the past 6 months. My own design, which was probably a bit ambitious. Now I am left with a machine that works... but is not square, nor rigid.
Parts I have:
16mm supported rails: 1100mm, 600mm, 300mm
1605 Ballscrews: 1100mm, 600mm, 300mm
Chinese 1.5kw spindle + VFD
Gantry bridge: 80x80mm aluminium extrusion 610mm long.
My concept is fairly simple:
The 1100mm rails bolt straight on to 30x60mm extrusion with 2 (or 3) cross beams.
Then some short length of 30x60 stick out. On to these bolt 60x60mm gantry uprights.
The extrusion will be joined by bolt in slot into tapped end + some corner brackets.
The gantry beam is then attached these with a bracket (not pictured) - this is the main problem with the design, obviously not as strong as gantry beam sitting directly on the uprights. However, unless I want to get rid the $50 piece of metal I have all set up with rails and replace it with a longer piece (which I'd do from 60x60, therefore need nuts etc adding to the $$$) then I'm stuck with this.
Also not pictured is bracing for the uprights in the X axis plane. I picture that this can be done very cheaply with sheet bolted to the outside of the uprights (triangle shape) with a free edge 'resting' on the table holding the machine.
Load of crap?
Mach3 2010 Screenset
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)