So this is a short post about my upgrade for the .8KW VFD water cooled spindle. I have been using the 48V 400W DC spindle on my Shapeoko 2 to mill in aluminum and the results have been really good.
But now with a new X carve I felt I would push the limits a bit and see how the X carve would stand up to milling aluminum with the .8KW water cooled 65mm VFD spindle. I have the Shapeoko still up and running so I am able to test a few ideas out and move parts around a bit to see this through I think. I had a slight delay in my X Carve build while I waited for a replacement belt clip which was bent in the wrong place when it arrived so i hit CAD and worked up the following.
This is based on trading out the Shapeoko spindle mount plate with the one from the X Carve (these can also be bought for under $10 (plus shipping) from Inventables. The X Carve mount was a great fit/upgrade on the Shapeoko.
At the same time I also did the Z axis belt drive upgrade for the Shapeoko so the Spindle can have the full travel of the Z axis like the X Carve enjoys. After a full night of cutting carbon fiber it seems like a great fit and a very worth while upgrade over my old 3D printed mount for the 400W spindle.
So the new mount was 3D printed to check for size and fit. The results look great and I plan to use them to mount the .8KW spindle to the X Carve just long enough to mill the new spindle mounts out of of some Alca 5 tool plate.
For an idea of size you can refer to this pic.
From top to Bottom: 24V 300 w Stock X Carve spindle , 48v 400W spindle, .8KW 1HP water cooled 65mm VFD spindle, 1.5KW 2HP water cooled 80MM VFD spindle (For my large 21x37 mill)
I will be doing a closed loop cooling system much like a water cooled PC. The .8KW spindle will use a single 120mm radiator with two high static pressure fans built for radiators. A small pump will keep the coolant flowing in the system while hooked up to the VFD unit which will turn it on and off with the spindle.
Right now the control unit for my X Carve build is up in the air. I have the stock Gshield but will either be testing a new X Controller shortly, or going with another TinyG for the main controller. Although full Leadshine DSP drivers with a planetCNC MK3/4 will end up being the controller in the long run I think so I can bring the OKO and X Carve more inline with my larger mill which runs on PlanetCNC controllers. Either way a PWM to 0-10v converter will feed the Gcode spindle speeds to the VFD and allow full spindle control.
Tomorrow I plan to knock out the final aspects of the X Carve build and start working to get the new mount on and ready for milling the real mounts in aluminum.
Updates to come and always welcome any questions.