Hello Guest it is August 20, 2019, 02:01:02 AM

Author Topic: Optical Registration Mark Reading With Mach3  (Read 17611 times)

0 Members and 1 Guest are viewing this topic.

Re: Optical Registration Mark Reading With Mach3
« Reply #10 on: January 22, 2014, 06:14:32 PM »
Pi=4*Atn(1)
X = GetDro (0)
Y = GetDro (1)
V=X/Y
BaseAngle = Atn(V)*(180/Pi)
Angle = 90-BaseAngle 'G68 angle for Quadrant 1
Re: Optical Registration Mark Reading With Mach3
« Reply #11 on: January 29, 2014, 05:57:02 AM »
So I've been thinking.

Optics may be too big a bite for now but how about something like this:

http://www.youtube.com/watch?v=bSPeiQl2k10


One would print 4 (or so) cross-marks at each corner of the print to be cut, manually go to #1 and in the software sort of zero there, then go to #2 and "zero" there as well and doing so for all 4 of them. Now the software has a reference points compared to the original toolpaths and can rotate and scale it accordingly, just like in the Zund example above.

How hard would this be to implement ? It's a bit more tedious to do manually but it's alright.


On a different front I've also found a company in the Netherlands that offers a vision system:

http://cnccamera.nl/src-gen/products.html

I've sent them an email and hopefully their system will be in an acceptable price-range.

Offline Tweakie.CNC

*
  • *
  •  7,884 7,884
  • Super Kitty
    • View Profile
    • Tweakie.CNC
Re: Optical Registration Mark Reading With Mach3
« Reply #12 on: January 29, 2014, 06:07:11 AM »
A visual location method and local system rotate was discussed in a earlier thread http://www.machsupport.com/forum/index.php/topic,22932.0.html
It is not difficult nor expensive to implement.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Optical Registration Mark Reading With Mach3
« Reply #13 on: January 29, 2014, 06:10:52 AM »
A visual location method and local system rotate was discussed in a earlier thread http://www.machsupport.com/forum/index.php/topic,22932.0.html
It is not difficult nor expensive to implement.

Tweakie.

Thanks for the quick reply.

I'll explore it.
Re: Optical Registration Mark Reading With Mach3
« Reply #14 on: January 29, 2014, 07:12:38 AM »
Guess it's time to start learning VB and figure out a way to implement this.

This is not a bad solution for now, in the future doing it with a visual camera system may be possible but for now this will do and is more than enough to keep my busy.

If anyone can point me in the right direction on how I would go about implementing this I would appreciate it.

Offline Tweakie.CNC

*
  • *
  •  7,884 7,884
  • Super Kitty
    • View Profile
    • Tweakie.CNC
Re: Optical Registration Mark Reading With Mach3
« Reply #15 on: January 29, 2014, 07:25:18 AM »
Here is a thread relating to the laser cross hair pointer http://www.machsupport.com/forum/index.php/topic,10841.0.html

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Optical Registration Mark Reading With Mach3
« Reply #16 on: January 29, 2014, 08:11:51 AM »
Here is a thread relating to the laser cross hair pointer http://www.machsupport.com/forum/index.php/topic,10841.0.html

Tweakie.

Yea I already read that and it's certainly something I want to add.

A question though, would I absolutely need the laser pointer ?

I'm asking cause if I make a cross mark and zero the tool in the dead middle of it it should be accurate enough, is there a need for the pointer for this talk alone ?

I mean the zund has a dot laser pointed and I don't really need that much either, I can just lower the bit itself into the middle of the cross and that should do it or have I missed something ?
Re: Optical Registration Mark Reading With Mach3
« Reply #17 on: January 29, 2014, 10:04:59 AM »
Another question, I'm trying to wrap this around my head...if the distortion is non-linear how would one go about performing the scaling so that the modified toolpaths match the drawing.

Zund iCut and others somehow do this perfectly based on the registration markers alone but I'm having a hard time figuring out how if the distortion is non-linear.

Offline stirling

*
  • *
  •  2,188 2,188
  • UK
    • View Profile
    • www.razordance.co.uk
Re: Optical Registration Mark Reading With Mach3
« Reply #18 on: January 29, 2014, 11:29:54 AM »
Another question, I'm trying to wrap this around my head...if the distortion is non-linear how would one go about performing the scaling so that the modified toolpaths match the drawing.

Zund iCut and others somehow do this perfectly based on the registration markers alone but I'm having a hard time figuring out how if the distortion is non-linear.

We did this before (http://www.machsupport.com/forum/index.php/topic,23758.0.html) and the whole thing hinged on "non-linear". Unfortunately the OP didn't respond so we kinda dropped it.

Offline Tweakie.CNC

*
  • *
  •  7,884 7,884
  • Super Kitty
    • View Profile
    • Tweakie.CNC
Re: Optical Registration Mark Reading With Mach3
« Reply #19 on: January 29, 2014, 11:31:43 AM »
You could certainly do it without the laser pointer and just by using the tool point if you wish.

Only linear distortion (scale) is easily catered for at run-time.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.