Thread: 3 Axis Router
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22-01-2013 #1
Welcome to my build log. Although I have tried to start a build log previously it was shelved as it didn’t really fulfil any of my requirements, its size and capabilities would have been too much of a compromise.
I have decided to take my time with this and ensure it has the capability to machine both aluminium and wood and have a working area of at least 1220mm x 1220mm.
The frame of the machine is to be a mixture of welded and bolted 50mm x 50mm SHS and the X axis rail supports 50mm x 100mm RHS, but this requires further development as there is no diagonal bracing.
Although the Z axis rails are rather long at 620mm the blocks are currently spaced far apart to provide rigidity so the movement is restricted to 270mm. This may need revising as I may have the spacing to far apart and could get some travel back.
The bed as shown can be raised and lowered to reduce the amount of Z travel as needed, but the bed currently restricted by the horizontal members welded to the sides of the base.
The Gantry is currently 3 pieces of 45mm x 90mm extrusion with 20mm plates either end.
It is intended to use pulleys and belts on all axis, and run 2 ballscrews and motors on the x axis.
I have the profiled rails, these are HR25 x 1800mm for the X, HR20 x 1500mm for the Y, and HR20 x 620mm for the Z, and I am about to order the ballscrews. So no going back on this.
I would welcome any feedback on this concept as redesigning costs nothing but time.
Jim
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22-01-2013 #2
Looks like a nice all rounder Jim.
I'm sure it'll be up to a decent level of performance for wood and would do alu too.
I might put another one or two uprights in supporting the steel section where the x rails are mounted. There's only 3 and that looks like quite a tall span you have there.
With 20mm profile rails on the Z and an adjustable bed there's no need for such wide bearing spacing. You could bring them closer so the top one has its bottom edge in line with the Y blocks.
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19-06-2020 #3
It has been said many times before, but if you are planning on using epoxy to level the x axis beams, you are going to want them wider than 50mm, 80mm works well. Also I wasted a lot of time with bolts - just weld it all, would be my advise. Another lesson from my build is get box section with thick wall - 5mm not 3mm as it will tap much more securely. Why do you need so much travel on z? it will be hard to maintain rigidity at that length. I also have real issues accessing the y and z axis ballnuts to grease them - make sure you figure that out now! Good luck with the build, this forum is great for keeping you on the straight and narrow!
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20-06-2020 #4-use common sense, if you lack it, there is no software to help that.
Email: [email protected]
Web site: www.jazzcnc.co.uk
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20-06-2020 #5
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21-06-2020 #6
haha I thought it was a new build also, I was planning on using 60mm y axis beams do you think they are not wide enough for epoxy?
cheers
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21-06-2020 #7-use common sense, if you lack it, there is no software to help that.
Email: [email protected]
Web site: www.jazzcnc.co.uk
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22-06-2020 #9
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