Look at Deskproto.
Hey G'day folks,
Just wondering with 4th axis rotary, is there a software that anyone can recommend that does a continuous rotary movement. Keeps turning 360 while cutting rather than a left to right finishing at 360. I've seen a few YouTube videos where the 4th axis is turning like a lathe without the speed while the cutter is doing its job.
Also just a small show and tell, a few months ago I was asking about cutting speeds and the like for perspex. I got lucky on one job but the rest I was having issues with melting and perspex sticking to the cutter.
With the tips and suggestions I got I think I've finally cracked it and am able to do bas reliefs in perspex without any issues at all.
The job below is 20mm perspex from a type of photo frame, two pieces with magnets to hold a picture in the center. You can see the 4 magnets, haven't removed them yet. Haven't polished the perspex yet either. I did an inverted bas relief pretty much looks like a mold from the back but pretty nice I think from the front.
I used a .5 radius tapered ball nose. Before I used the ball nose what I did was at the bottom I did a 6mm vector x the width of the job and used a 3mm single flute to do some roughing just enough so the ball nose could get in and do the job.
Job took about 7 hours to finish then as a single final pass.
Spindle speed I don't know what it is in rpm, the digital display was 10000 whatever that equates too, its a quater of the 40000 display when the vfd boots. I know the VFD can be changed to display rpm last time I looked a couple of years ago now and I gave up, I couldn't make sense of the instructions. I'm only guessing 6000 rpm?!?!?! The feed was 1200mm/s it wasn't going that fast there were very few straight lines in the job.
Job size 300 x 200.
I think it came out ok. Happy to hear your thoughts.
Cheers and ty
Steve
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Look at Deskproto.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Just wondering with 4th axis rotary, is there a software that anyone can recommend that does a continuous rotary movement. Keeps turning 360 while cutting rather than a left to right finishing at 360.
I can't recommend any SW for this, but I can suggest a HW mod for it.
I set up a 555 oscillator (or something similar in CMOS, I forget) with a variable potentiometer for the speed, and an SPDT switch. The switch chooses between the pulse drive from Mach3 and the output from this oscillator. Switch to oscillator,adjust rotation speed: slow lathe.
Cheers
Roger
It is a pure HW mod. It goes between the UCCNC and the rotary drive. In other words, it has nothing to do with the UCCNC.
Um - that assumes you can get between the UCCNC pins and the rotary input of course.
Cheers
Roger
Yup I can, seeing as we are all locked in I think that will give me something to do.
Cheers,
Steve
What about a cheap Stepper drivers on ebay that allow one to control the speed of a stepper via a pot?
https://tinyurl.com/vfykv3p
Exactly the same thing.
I made my own because I have cupboards full of electronic chips etc from the past; I am too mean to buy what I can make; and it was fun.
Cheers
Roger
Hey G'day,
That's a pretty good idea as well - primarily why I was asking about continuous rotary is on the odd occasion I'm making something on the 4th axis I dont like the finish that I get when the cutter is traveling X and small Y increments. I'd prefer if the rotary was moving past 360 degrees and having Z doing its job with X moving incrementally and Y to be stationary. So I don't really want to use my rotary as a lathe, though I can see merit in doing some things that way. Particularly sanding lol.