Fickert's CNC HEAVY Design 🇬🇧
Hey guys so I got some screen shots of whats going on so far. Not finished but pretty close with the rough assembly. Things still to do:
- Finish the cable chain mount on gantry
- Design wheel spacers for the delrin V wheels
- Design vacuum system for larger spindle
- Document all screws and screw lengths since a lot of them did change
Anyways I have taken Topsie's 3D files and began to convert them over. A few main reasons I wanted to modify the design:
- Wanted a large spindle (Currently modeled for a 2.2kW watercooled Spindle)
- Wanted NEMA23 Stepper motors (Currently modeled for 3A steppers)
- Wanted T10 or T12 Leadscrews (Currently modeled for T12 12mm leadscrews)
- Cutting Aluminum will be common on this machine
These desires created a whole lot of changes to the original files:
- The Gantry saw a whole lot redesign, which uses larger 10mm guide rods, larger bearings, and the whole carriage assembly for the Z axis to be lengthened by 50mm to help create more rigidity (reduces "slop" effect of bearings). How the Z axis motor is mounted is flipped back down and tucked into the gantry for a cleaner look.
- I also tucked in some interfering screws that were caught by another user on the X axis mounts. These screw would rub into the Y axis extrusions.
- The Feet for the design were modified and reinforced a bit for the larger steppers.
I am shooting for a ~1950mm x ~1350mm working area, so I am trying to make the frame as rigid as possible. I have a few tricks to help strengthen the design:
- Printed parts EXCEPT the spindle mounting parts will be printed in Carbon Fiber PLA. Maybe the Stepper motor mounting locations as well if they will run warm or not.
- Remaining parts that will see higher temperatures will be printed in Carbon Fiber PC.
- Y axis extrusions will have center cavity filled with epoxy resin mixed with chopped fiberglass. (Maybe X axis extrusions too?)
I am sure I am forgetting some stuff but wanted to show some progress on the design. Very excited to tidy up the remaining parts and begin printing :)
Below are some simple screen shots to show I have been doing something XD
I also have attached a STEP file for anyone who wants to take a look at the assembly. I will upload a full parts list and such with STEP files when I am finished :)
LASTLY, PLEASE PLEASE provide any feedback. I am not perfect and look for any improvements.
Cheers,
Dustin
Link to Photos and STEP file: Link
My next TopsCNC version is for Nema23, i will receive Nema34 for a big CNC project, full aluminium
Dustin, Do you have an update for us on your progression with your design?
And what is the lead on your trapezoidal screws?
Hey Rehoboth,
To be honest has a hiccup with my filament supply. Got 4kg of CF PLA, but it was all terrible filament. Almost no CF in the filament. Had ended up doing a stress test, and comparison with other CF PLA I had laying around. Sent that the seller and discussed back and forth to finally give me a full refund, sending back what I didn't use of course.
Then with COVID19, Cleveland hospitals have been requesting a lot of face shields to be printed by locals. My wife is in the medical device business and her hospital connections has us going full speed (3 printers worth) on face shield frames.
Good news is I stocked up on 6kg of CF PLA and hope to get printing parts before long. Told my wife once we blow through 12kg of PETG I will stop for the CNC table :)
As for the remainder of the components (Motors, leadscrews, extrusions, etc) I am in the middle of putting up a storage shed in our back yard to clear up the space in my garage for the build. So that is the other big priority while these face shields consume printer time. Once parts begin to fly off printers, I will be ordering the remaining parts.
Hi guys I came across this project a few days ago and I decided to make it happen! I leave with compliments to all for your good work.
By getting better informed I discovered this reinforced project to mount the Nema 23 and I think they are more appropriate for my needs! Is the project already made this way or does it need further improvements? otherwise I start making parts with a 3D printer
the project are made for nema 17 currently, but i'm making a new design for nema 23, i wil release it this evening (here in france GMT+2)
then I look forward to your new project to be able to carry it out soon