Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
I dont see any means of fine adjustment, unless the holes are oversize ?
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
The holes are oversize so there's 1mm of adjustment movement. I'll be clamping the blocks whilst adjusting them so the final adjustments needed should be very small....thats the plan anyway!
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
Quote:
Originally Posted by
njhussey
The holes are oversize so there's 1mm of adjustment movement. I'll be clamping the blocks whilst adjusting them so the final adjustments needed should be very small....thats the plan anyway!
You'll probably need shims behind them too, those cut from empty Guinness cans are a great thickness for this :whistle:
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
I'll have to machine down the pads as they're too deep, wouldn't bet against still having to shim something though.....a great excuse to get some beer in :eagerness:
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
Well disappointingly I only managed a few diet coke cans at work for shims...clamped one ballscrew to the side and ran the ballnut up and down a few times. The ballscrew has a good wobble to it where it's either bent at the ends or the machining is crap.
http://tapatalk.imageshack.com/v2/15...8eeabfc119.jpg
The drive end ballnut pad needed 1.2mm machining off and the NDE needed 1.2mm of shims...
One of the things that I didn't think through properly with regards to assembly was the X axis ballnut holders. I got the aluminium ones that are small and compact and they fasten from the underside/reverse so on my design I'd gave to take the gantry end plate off to remove them which is far from ideal. I've ordered a couple if MGD16 ballnut holders that can be fastened from the outside. I'll probably have to machine back the base so it is the same height as the current ballnut holders but that's no biggie with the mill.
http://tapatalk.imageshack.com/v2/15...26c26554bd.jpg
Link below is flycutting the DE mount to remove the 1.2mm needed to make it fit.
https://www.youtube.com/watch?v=k7BD...ature=youtu.be
Couple of pics cutting the Ali plate with the bandsaw and then squaring and machining to size the ballnut plates.
http://tapatalk.imageshack.com/v2/15...4beb45cae3.jpg
http://tapatalk.imageshack.com/v2/15...2e2b86288c.jpg
I ordered 2 x CSIMO IP-M controllers and 4 x Nema 34 8.7Nm steppers and 4 x 240V HV stepper drivers today...looking forward to those coming. 3 steppers and drivers and one IP-M are for CNCing the WARCO Major GH mill.
Tomorrow's ordering will be PSU components and belts and pulleys...
1 Attachment(s)
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
Attachment 14751
Got some belts and pulleys today, didn't get them from Belting online or anyone like that as our local company we use for bearings etc. Gloucester bearings (Hayley) were so much cheaper for the pulleys and a bit cheaper for the 2525 belt...
7 off 20 tooth pilot bored pinions - P20-5M-15F £1.73 each
1 off 2525-5M-15mm HTD belt £14.85
2 off 265-5M-15mm HTD belt £4.31
I realise that the pinions aren't pilot bored like the ones from belting online but I was going to have to drill them out to the correct size for the ballscrew ends and stepper shafts on the lathe anyway.
15 Attachment(s)
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
Got another package just now....it's like Christmas :yahoo:
Opened the box from Gary @ Zapp...
Attachment 14753
CSMIO....
Attachment 14755 Attachment 14756
Showing it's size against a Nema23 stepper and AM882
Attachment 14754
Kinco 230V Driver
Attachment 14757Attachment 14758Attachment 14759Attachment 14760
Nema34 8.7Nm motor...(4 off)
Attachment 14762Attachment 14761
Showing the difference between a Nema23 and 34...
Attachment 14765Attachment 14767Attachment 14766
Drilling the pulleys...2x8mm, 4x10mm & 1x12mm
Attachment 14764Attachment 14763
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
Getting close now Neil !
A cracking set of bits, should run nicely with those fitted.
Re: Comments sought on new build: A CNC Router for RC Gliders and Planes
Quote:
Originally Posted by
routercnc
Getting close now Neil !
A cracking set of bits, should run nicely with those fitted.
Cheers!! Only one Nema34 is going on this....it'll be on the X axis driving the twin ballscrews. The other 3 will be going on the mill conversion ill be doing next...hoping to do more tomorrow but work is getting in the way!