A little journey in 4 axis milling.

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PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

A little journey in 4 axis milling.

Post by PsyKo » Sun Feb 01, 2015 9:11 am

Hello,

I've recently had time to plya with my 4th axis and I'm pretty happy with the results.

First, the model I chose is this one : http://www.thingiverse.com/thing:530088. Decided to only mill the torso.

For GCode generation, I used a trial version of deskproto 6. Didn't really had time to get used to it, but I managed to achieve this project.

Here is the result, viewed in my TinyG control software :
gcode01.jpg
Roughing passes on a 40mm diameter Delrin cylinder
gcode01.jpg (474.22 KiB) Viewed 2411 times
gcode02.jpg
Finishing passes using 3mm ball nose mill.
gcode02.jpg (448.28 KiB) Viewed 2411 times
I also made a finishing pass using 1.5mm ball nose mill, but the GCode is basically the same as the finishing pass above.

And here is the result :
Attachments
third.jpg
Final result next to a AA battery
third.jpg (190.14 KiB) Viewed 2411 times
Last edited by PsyKo on Sun Feb 01, 2015 9:12 am, edited 1 time in total.
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
Goko - Free CNC Control Software - http://www.shapeoko.com/forum/viewtopic ... 380#p44380

PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Re: A little journey in 4 axis milling.

Post by PsyKo » Sun Feb 01, 2015 9:12 am

front.jpg
front.jpg (153.45 KiB) Viewed 2410 times
back.jpg
back.jpg (141.34 KiB) Viewed 2410 times
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
Goko - Free CNC Control Software - http://www.shapeoko.com/forum/viewtopic ... 380#p44380

Brian Stone
Posts: 295
Joined: Tue Oct 21, 2014 1:52 am
Location: Seattle, WA

Re: A little journey in 4 axis milling.

Post by Brian Stone » Sun Feb 01, 2015 9:34 am

- "Is this some kind of bust?"
- "Yes, it's very impressive, but we need to ask you a few questions."


Great results for a first try. Great results for a 10th try, really. What is the largest diameter you can mill with it? And can you post some photos of the machine?
Shapeoko 2 #7353
1500x1000mm Shapeoko/X-Carve Hybrid, Nema-23's, Belt-Driven Z-Axis /w ACME Screw, Dewalt 611, Soundproof Enclosure
[Fusion 360 | Illustrator] -> Universal G-Code Sender

lioramsalem
Posts: 88
Joined: Mon Jun 09, 2014 1:43 pm

Re: A little journey in 4 axis milling.

Post by lioramsalem » Sun Feb 01, 2015 9:54 am

+1
Photos, information, etc..

Looks very impressive.

Regards,
LA
ShapeOko 2 #5840 w/ NEMA23, ACME Z axe belt upgrade, limit switches, spindle speed control, 400w brushless spindle, 9mm belts, aluminum bed, eShapeoko X carriage and belts system

Build log: http://www.shapeoko.com/forum/viewtopic.php?f=5&t=3650

cmcta82
Posts: 68
Joined: Wed Apr 23, 2014 8:27 am

Re: A little journey in 4 axis milling.

Post by cmcta82 » Sun Feb 01, 2015 11:44 am

Can you share information about your 4th axis, its very impressive!

PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Re: A little journey in 4 axis milling.

Post by PsyKo » Sun Feb 01, 2015 12:04 pm

Brian Stone wrote:- "Is this some kind of bust?"
- "Yes, it's very impressive, but we need to ask you a few questions."


Great results for a first try. Great results for a 10th try, really.
It's my first result with a completet 4axis CAM software. Before I did them using Cambam and some trickery.

My 4axis v1 presentation is here (The v2 is only a replacement of the 2 extrusion rails with a solid aluminium plate)
http://www.shapeoko.com/forum/viewtopic.php?f=30&t=2819

And my machine is here :
http://www.shapeoko.com/forum/viewtopic.php?f=30&t=1608

I can't get to my workshop now, so that will be the only pictures I can show you for now.
Brian Stone wrote: What is the largest diameter you can mill with it? And can you post some photos of the machine?
I do have a 80mm chuck. But the diameter is limited by the maximal Z of the machine. And to be honest I have no idea. I already rounded some 80mm support for the chuck. I think I can go bigger depending on the 4th axis setup, which is not definitive for now.
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
Goko - Free CNC Control Software - http://www.shapeoko.com/forum/viewtopic ... 380#p44380

DanMc
Posts: 257
Joined: Fri Apr 13, 2012 3:34 am

Re: A little journey in 4 axis milling.

Post by DanMc » Sun Feb 01, 2015 4:03 pm

Awesome work!

I had been shying away from building a belt-driven 4th axis, worried about backlash, but I may have to reconsider.

PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Re: A little journey in 4 axis milling.

Post by PsyKo » Sun Feb 01, 2015 6:21 pm

I do have a little backlash, but only because the belt is not properly tensionned.
I have to figure out a belt tensionner that fits my design.

Beside I'm working on a worm gear driven 4th axis for now. It should be smaller.
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
Goko - Free CNC Control Software - http://www.shapeoko.com/forum/viewtopic ... 380#p44380

MeanderBolt
Posts: 560
Joined: Mon Nov 04, 2013 6:45 pm
Location: Georgia
Contact:

Re: A little journey in 4 axis milling.

Post by MeanderBolt » Sun Feb 01, 2015 7:52 pm

Holy crap. That's really cool. Man, if I were into chicks with no arms, or legs...
How long did this take?
Shapeoko 2 # 3569 - DW660
Current tool chain > Draftsight > CamBam > ChiliPeppr
Build log

PsyKo
Posts: 430
Joined: Thu Aug 30, 2012 8:42 pm
Location: France

Re: A little journey in 4 axis milling.

Post by PsyKo » Mon Feb 02, 2015 1:39 pm

MeanderBolt wrote:How long did this take?
Don't remember exactly, but it was ~4h of pure milling, including roughing, 1st and 2nd finishing passes.
Shapeoko #736
Kress 800, Z Axis upgrade, dual Y, 600mm X&Y rails, metal spacers and V Wheels, home switches, 4th axis
Goko - Free CNC Control Software - http://www.shapeoko.com/forum/viewtopic ... 380#p44380

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