Break Through in speed increase in 3D contouring (DIY)
Break Through in speed increase in 3D contouring (DIY)
Following is the simple technique u can dramatically increase the speed of ur 3D contouring... I use normally raster machining strategies as shown in attached figure.. I increased my Z-axis and X-axis motor accelerations twice as compare to Y-axis motor..
I got dramatic time reduction from 3 hrs to 45 minutes in one of the 3D carving..
U can see my work at following thread...
http://www.cnczone.com/forums/showth...404#post529404
Now What u comments on that???....
I got dramatic time reduction from 3 hrs to 45 minutes in one of the 3D carving..
U can see my work at following thread...
http://www.cnczone.com/forums/showth...404#post529404
Now What u comments on that???....
- rbrague
- Vectric Craftsman
- Posts: 193
- Joined: Thu Mar 29, 2007 1:36 pm
- Location: Columbia, South Carolina
Re: Break Through in speed increase in 3D contouring (DIY)
Your link doesn't appear to be correct.
Rick
Re: Break Through in speed increase in 3D contouring (DIY)
Sorry, i don't know why the link not working..following are the refreshed links..
http://www.cnczone.com/forums/showthrea ... 88&page=32
http://www.cnczone.com/forums/showthread.php?t=68544
Best Regards
http://www.cnczone.com/forums/showthrea ... 88&page=32
http://www.cnczone.com/forums/showthread.php?t=68544
Best Regards
Re: Break Through in speed increase in 3D contouring (DIY)
oooppppss.. 93 views and no comments!!!...
- rbrague
- Vectric Craftsman
- Posts: 193
- Joined: Thu Mar 29, 2007 1:36 pm
- Location: Columbia, South Carolina
Re: Break Through in speed increase in 3D contouring (DIY)
Hey, thanks for all the great information. Please keep posting. I am sure there are many others that appreciate your sharing of experiences.
Rick
Rick
Rick
Re: Break Through in speed increase in 3D contouring (DIY)
Khalid,
I'm not clear on what you are suggesting. I have a Shopbot and I am using the Shopbot software to run the machine. I know I can increase the move speed and the jog speed but I don't know about the acceleration.
I'm not clear on what you are suggesting. I have a Shopbot and I am using the Shopbot software to run the machine. I know I can increase the move speed and the jog speed but I don't know about the acceleration.
-
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Re: Break Through in speed increase in 3D contouring (DIY)
Hi Khalid,
I have driven my acceleration to the max for a long time by increasing my motor-currents till my steppers get almost 90 degrees celcius and tweaking some weight-issues. Also because the Y-axis has less weight to drive, i do most of my milling in 90 degrees direction.
But what made my carving dramaticaly faster was minimizing the display of my router-interface during the job.. But that's in my case.. i use a different setup than most of us..No Mach3 or any other parallel-interface. I do have a dedicated controller that's connected to my RS232 port on the computer.
Kees
I have driven my acceleration to the max for a long time by increasing my motor-currents till my steppers get almost 90 degrees celcius and tweaking some weight-issues. Also because the Y-axis has less weight to drive, i do most of my milling in 90 degrees direction.
But what made my carving dramaticaly faster was minimizing the display of my router-interface during the job.. But that's in my case.. i use a different setup than most of us..No Mach3 or any other parallel-interface. I do have a dedicated controller that's connected to my RS232 port on the computer.
Kees
Re: Break Through in speed increase in 3D contouring (DIY)
Phil... I use Mach3... Now read the following and if it make sense then comments and if somebody is unclear then also please ask the question...Phil wrote:Khalid,
I'm not clear on what you are suggesting. I have a Shopbot and I am using the Shopbot software to run the machine. I know I can increase the move speed and the jog speed but I don't know about the acceleration.
Basically the lengthy axis (Y-axis in my case) is the problem.... U may have various issues along Y-axis side i.e. Leadscrew Binding, heavy Gantry load, resonance... The lengthy axis is always prone to that issues, You can just optimize the cutting strategies to debottleneck this axis....this one axis can be debottleneck as per my above approach..
I experimented it myself and its really working for me..
As Y-axis moving large weight (complete Gantry), its prone to large inertial forces too... All three axis acceleration well be different when u optimized ur motors..
Lets take an example...
My Z-axis can bear accelerations upto 50 @ 100IPM without loosing steps....
My X-axis can bear acceleration upto 45 @ 100IPM without loosing steps..
But My Y-axis can't go more 20 @ 100IPM..
So why not keep the acceleartion values say 43 for z and x axis and keep them 20 for y-axis... Now all u have to do to adopt raster startegies as shown in fig.
Does this makes since???
Regards
Khalid
Re: Break Through in speed increase in 3D contouring (DIY)
Thanks Kees for Tip... In Mach3 if the toolpath display is disabled or to make a screen set that having no toolpath screen like Ger21 (Gerry) did.. u can get a little more speed.... Buddys using Kcam , if the Kcam parameters are set and the Kcam is minimized during machining its efficiency increased...Audiomanics wrote:Hi Khalid,
I have driven my acceleration to the max for a long time by increasing my motor-currents till my steppers get almost 90 degrees celcius and tweaking some weight-issues. Also because the Y-axis has less weight to drive, i do most of my milling in 90 degrees direction.
But what made my carving dramaticaly faster was minimizing the display of my router-interface during the job.. But that's in my case.. i use a different setup than most of us..No Mach3 or any other parallel-interface. I do have a dedicated controller that's connected to my RS232 port on the computer.
Kees
But these are all software related issues... To overcome mechanical issues the above method will give you twice or more than twice efficiency of ur machine.. . just change the cutting strategies and optimize the Z and Y-axis in Mach3 and viola...
Re: Break Through in speed increase in 3D contouring (DIY)
I changed my machining to very similar configuration, x-raster so the machine 3D cuts in a x-z direction and y come into play only at the end of the cut. Also changed the look ahead in Mach to 100 lines.Khalid wrote:Following is the simple technique u can dramatically increase the speed of ur 3D contouring... I use normally raster machining strategies as shown in attached figure.. I increased my Z-axis and X-axis motor accelerations twice as compare to Y-axis motor..
I got dramatic time reduction from 3 hrs to 45 minutes in one of the 3D carving..
U can see my work at following thread...
http://www.cnczone.com/forums/showth...404#post529404
Now What u comments on that???....
My speeds went from 25 ipm to 100 ipm!! Its almost a little scary to watch after seeing 25 ipm for so long. A 3d carving in under an hour is a very nice change from 3-4 hours.
Maybe I can make some $.$$ in 3D carving.
Thanks for the tip!!
Mike
Mike E
CuttingandCarving.com
CuttingandCarving.com
Re: Break Through in speed increase in 3D contouring (DIY)
Mike.. its nice that we debottlenecked restrictions in 3D carving... Thanks for sharing your experience... I will be happy if u can make a video, showing the DRO's reading and machining...Mike E wrote:I changed my machining to very similar configuration, x-raster so the machine 3D cuts in a x-z direction and y come into play only at the end of the cut. Also changed the look ahead in Mach to 100 lines.Khalid wrote:Following is the simple technique u can dramatically increase the speed of ur 3D contouring... I use normally raster machining strategies as shown in attached figure.. I increased my Z-axis and X-axis motor accelerations twice as compare to Y-axis motor..
I got dramatic time reduction from 3 hrs to 45 minutes in one of the 3D carving..
U can see my work at following thread...
http://www.cnczone.com/forums/showth...404#post529404
Now What u comments on that???....
My speeds went from 25 ipm to 100 ipm!! Its almost a little scary to watch after seeing 25 ipm for so long. A 3d carving in under an hour is a very nice change from 3-4 hours.
Maybe I can make some $.$$ in 3D carving.
Thanks for the tip!!
Mike
Best Regards
Khalid
Re: Break Through in speed increase in 3D contouring (DIY)
WOW Khalid,
Now I'm going to have to reconfigure mach3 and set up to try your method!!!! Thank you for your research on this. How is your surface coming out ? DO you need to do much sanding??
I will post as soon as I have a chance to do more 3d work.
Thank you,
Nick
Now I'm going to have to reconfigure mach3 and set up to try your method!!!! Thank you for your research on this. How is your surface coming out ? DO you need to do much sanding??
I will post as soon as I have a chance to do more 3d work.
Thank you,
Nick
Re: Break Through in speed increase in 3D contouring (DIY)
The surface of machined peice is perfect...No extra sanding because i reduce my step over to 10%. When u change the configuration and optimize ur machine...then please post the results here...moto633 wrote:WOW Khalid,
Now I'm going to have to reconfigure mach3 and set up to try your method!!!! Thank you for your research on this. How is your surface coming out ? DO you need to do much sanding??
I will post as soon as I have a chance to do more 3d work.
Thank you,
Nick
Thanks and Best Regards
Khalid
- Pilotfromdk
- Vectric Apprentice
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Re: Break Through in speed increase in 3D contouring (DIY)
Hi
What version of Mach3 are you using?
And where can i changed the look ahead in Mach to 100 lines ?
What version of Mach3 are you using?
And where can i changed the look ahead in Mach to 100 lines ?
Regards
Borge
Homepage: www.WoodSign.dk
FaceBook : https://fb.me/woodsign.dk
Borge
Homepage: www.WoodSign.dk
FaceBook : https://fb.me/woodsign.dk
Re: Break Through in speed increase in 3D contouring (DIY)
Any Shopbotters doing this? Khalid is working with Mach3. I know how to increase the cutting speed but I don't know if the SB software can do the axis travel individualy.