2080 extrusions aren't very stiff. Torsion forces when the spindle is in the middle of the gantry will still cause chatter in harder materials. Put a dial indicator on the spindle shaft that's lowered all the way and push the stepper motor at the top, you'll immediately see what I mean. Add a steel square tube to the gantry back and side plates. That should stiffen it up sufficiently.
Thanks! Excellent advice. We are using thick wall extrusions and have some at 90 degrees for extra stiffness. But, we are still seeing the shaking, so we will try your suggestions!
in order to avoid vibrations or such with z axe just install the two linear guideway rails away from each as most possible, that upper one raise it up in upper stream-slot in the aluminium profile.
Yes. Crazy rails. It’s quite a load for the steppers to push around, even when not cutting. I’ll look into that bracing. Thanks for the helpful advice. I may send you some questions as I look into it.
Actually 45mm guide rails! They are WAY TOO BIG for the machine, and they have enough built-in resistance that the motors have to push quite hard just to overcome the bearing movement, and then on top of that, apply the cutting force. It also cuts back on the rapid speeds we can use. I had found them for sale on an overstock site and thought they'd be cool.
It’s my own design, using many components from avidCNC.com. I used rails I found online (automation overstock??) and bought aluminum extrusion for the frame. It uses Avid electronics, which are excellent.
Well done Rich can’t wait to see it really in action !
My eyes are over here Rich 🤨
This is a great upgrade and has made a world of difference.
love the tripped the breaker remix at the end
2080 extrusions aren't very stiff. Torsion forces when the spindle is in the middle of the gantry will still cause chatter in harder materials. Put a dial indicator on the spindle shaft that's lowered all the way and push the stepper motor at the top, you'll immediately see what I mean. Add a steel square tube to the gantry back and side plates. That should stiffen it up sufficiently.
Thanks! Excellent advice. We are using thick wall extrusions and have some at 90 degrees for extra stiffness. But, we are still seeing the shaking, so we will try your suggestions!
Enjoyed Rich!
ATB, Robin
Nice upgrades
Thank you so much!!
Nice job bro !!!
in order to avoid vibrations or such with z axe just install the two linear guideway rails away from each as most possible, that upper one raise it up in upper stream-slot in the aluminium profile.
This is in progress. Also, reducing the rail size. Thanks for the nudge!
thats some massive rails even our thermwood series 45 use smaller rails! brace your gantry extrusion together in the back for more stiffness
Yes. Crazy rails. It’s quite a load for the steppers to push around, even when not cutting. I’ll look into that bracing. Thanks for the helpful advice. I may send you some questions as I look into it.
What’s the width of those guide rails? 35mm? Those bearing blocks are massive. Thanks for the video
Actually 45mm guide rails! They are WAY TOO BIG for the machine, and they have enough built-in resistance that the motors have to push quite hard just to overcome the bearing movement, and then on top of that, apply the cutting force. It also cuts back on the rapid speeds we can use. I had found them for sale on an overstock site and thought they'd be cool.
The bearing blocks are comical no need for that 4 20mm blocks would be better then 2 over sized ones. Very nice spindle upgrade!
Yes. It’s on my list to downsize to 25mm. The motors can hardly drive these things.
Hi Rich,could you please tell me the exact dimensions of your new Spindle please?Cheers from Toronto Canada!!
www.avidcnc.com/dl/cad.pdf/MOTM%20QN-1F%206.518%2024%20ER32DX%20BT%20220380V%2029L0596100F%20performance.pdf
It’s this spindle: www.avidcnc.com/87-hp-plug-and-play-spindle-vfd-system-p-834.html?osCsid=4a0rqug9tckk5c40oi5mdl1e91
What cnc is that?
It’s my own design, using many components from avidCNC.com. I used rails I found online (automation overstock??) and bought aluminum extrusion for the frame. It uses Avid electronics, which are excellent.