[Emc-users] Machine Vision?

2014-08-18 Thread Roland Jollivet
On 18 August 2014 20:50, Dave Caroline wrote: > Tip them pocket down and vibrate them, get the dust to fall out (use a > roller conveyor) > > Dave > > Best advise !! But if you really want to use a camera, you'll have to contend with purging a pocket around the lens to keep it dust free. For vi

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Dave Cole
I think the machine could be moved via a command to MDI or something similar. Here you go.. the python interface showing the MDI interface.. http://linuxcnc.org/docs/html/common/python-interface.html There are probably a number of ways to do this. I don't think you need to mess around with the

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Gregg Eshelman
On 8/18/2014 12:05 PM, Dave Cole wrote: > > Vision systems can be very light sensitive, which is sometimes not > immediately obvious. Cast a shadow across the parts and the vision > system may get lost. Find someone who does a lot of vision and you > will find that they know a lot about lighting

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Gregg Eshelman
On 8/18/2014 11:46 AM, Todd Zuercher wrote: > I've had a problem proposed to me. Any ideas or suggestions? > > A series of randomly sized wooden pieces (uniform thickness) placed randomly > on a slow conveyor. Each piece has 1 to 4 small pockets milled in them. I > would like to automate a method

[Emc-users] Lathe spindle speed

2014-08-18 Thread Marius Liebenberg
What is a good or practical top speed for a small lathe spindle? I can over drive my spindle to get good high end but I would like to stay with what is a good norm. -- Regards /Groete Marius D. Liebenberg +27 82 698 3251 +27 12 743 6064 QQ 1767394877

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Marius Liebenberg
Sure I will look at them to see what we can make of it. On 2014-08-18 22:04, Viesturs Lācis wrote: > 2014-08-18 22:47 GMT+03:00 Marius Liebenberg : >> Will you be willing to share the script as it could be useful for a pick >> and place machine that I am looking at doing. > I have 2 files - one is

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Viesturs Lācis
2014-08-18 22:47 GMT+03:00 Marius Liebenberg : > Will you be willing to share the script as it could be useful for a pick > and place machine that I am looking at doing. I have 2 files - one is .cpp file (no idea, what it is), the other seems to be the script itself. AFAIK that guy was using Eclip

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Marius Liebenberg
Will you be willing to share the script as it could be useful for a pick and place machine that I am looking at doing. There are a number of people that has done just that what you are talking about for pick and place machines but they are mostly not open source sadly. On 2014-08-18 21:35, Vie

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Viesturs Lācis
2014-08-18 21:42 GMT+03:00 David Armstrong : > let me know what you need from opencv into linuxcnc etc Nothing specific, only a concept - I was thinking about automation of "put a workpiece in cnc lathe, take finished part out of cnc lathe and repeat" process. If there is a box with unaligned work

Re: [Emc-users] OT: 5axis Workpiece Offset Compensation (in Sinumerik and LinuxCNC)?

2014-08-18 Thread Stuart Stevenson
Do all your programming in reference to the XYZ0 you choose to make setup and multiple ops the easiest possible. Then use G54-G59 to set the zero coordinate offset from machine zero. This will work for 3, 4 and 5 axis programming. I don't know the mechanical configuration of your machine but Linu

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Dave Caroline
Tip them pocket down and vibrate them, get the dust to fall out (use a roller conveyor) Dave On 18/08/2014, Marius Liebenberg wrote: > Why bother with detecting the pockets. Use a curtain of nozzles that > will blow in various directions. Maybe repeated once or twice and then > blow the lot clea

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Marius Liebenberg
Why bother with detecting the pockets. Use a curtain of nozzles that will blow in various directions. Maybe repeated once or twice and then blow the lot clean. A number of swirling nozzle will also work. On 2014-08-18 19:46, Todd Zuercher wrote: > I've had a problem proposed to me. Any ideas or

Re: [Emc-users] Machine Vision?

2014-08-18 Thread David Armstrong
a vacuum would be far better and safer , instead of blowing potential chips into someones eyes etc no matter how good you are at trying to keep small debris in check , particles always get through . viesturs let me know what you need from opencv into linuxcnc etc Dave On 18 August 2014 19:16, T

Re: [Emc-users] Machine Vision?

2014-08-18 Thread TJoseph Powderly
maybe vacuum is better ( dont blow chips into already cleaned pocket) maybe mechanical fingers could detect pockets simply imagine a row across conveyer of pivoting fingers drooping down to belt as wood passes it would raise lever finger to hi posn if it returned NOT to conveyer level , you got a p

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Viesturs Lācis
2014-08-18 20:59 GMT+03:00 Dave Caroline : > I imagine you can get co-ordinates from something like http://opencv.org/ > and then move the nozzle/s as required > Last year I had an intern that created a script, that used opencv to recognize a part and return its coordinates and orientation angle.

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Dave Caroline
If you know the outer shapes you can then know where the pockets are, another way if they are likely to be low contrast/full of dust. Dave Caroline On 18/08/2014, Viesturs Lācis wrote: > 2014-08-18 20:56 GMT+03:00 andy pugh : >> On 18 August 2014 18:46, Todd Zuercher >> wro

Re: [Emc-users] Machine Vision?

2014-08-18 Thread John Thornton
We use cameras to check things on production lines, I'd assume from that experience you would need to traverse the conveyer and when a target is found blast some air. Is this just to save some air vs an air curtain? JT On 8/18/2014 12:46 PM, Todd Zuercher wrote: > I've had a problem proposed to

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Dave Cole
Vision systems can be very light sensitive, which is sometimes not immediately obvious. Cast a shadow across the parts and the vision system may get lost. Find someone who does a lot of vision and you will find that they know a lot about lighting and light sheilding. Vision works best in a

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Viesturs Lācis
2014-08-18 20:56 GMT+03:00 andy pugh : > On 18 August 2014 18:46, Todd Zuercher > wrote: > >> How hard would it be to detect the location of these pockets, position an >> air nozzle over the pocket and clean them with a short air blast as they are >> carried down the convey

Re: [Emc-users] Machine Vision?

2014-08-18 Thread Dave Caroline
I imagine you can get co-ordinates from something like http://opencv.org/ and then move the nozzle/s as required Dave Caroline On 18/08/2014, Todd Zuercher wrote: > I've had a problem proposed to me. Any ideas or suggestions? > > A series of randomly sized wooden pieces (uni

Re: [Emc-users] Machine Vision?

2014-08-18 Thread andy pugh
On 18 August 2014 18:46, Todd Zuercher wrote: > How hard would it be to detect the location of these pockets, position an > air nozzle over the pocket and clean them with a short air blast as they are > carried down the conveyor. I think that would strongly depend on the

[Emc-users] Machine Vision?

2014-08-18 Thread Todd Zuercher
I've had a problem proposed to me. Any ideas or suggestions? A series of randomly sized wooden pieces (uniform thickness) placed randomly on a slow conveyor. Each piece has 1 to 4 small pockets milled in them. I would like to automate a method of blowing out the dust left from milling the pock

[Emc-users] OT: 5axis Workpiece Offset Compensation (in Sinumerik and LinuxCNC)?

2014-08-18 Thread Florian Rist
Hi, sorry, this is somewhat off-topic, as it does not (only) concern LinuxCNC but Sinumerik controls, however I think you guys will know and I hope you don't mind me asking. I'm trying to figure out the proper way to handle workpiece offsets in 5axis machining, especially on Sinumerik 840D cont

Re: [Emc-users] Remove us from mailing list please

2014-08-18 Thread Gene Heskett
On Monday 18 August 2014 04:57:58 Andrew McCallum did opine And Gene did reply: > Thank you regards > Andrew > > Sent from my iPad > > --- > --- ___ > Emc-users mailing list > Emc-u

[Emc-users] Remove us from mailing list please

2014-08-18 Thread Andrew McCallum
Thank you regards Andrew Sent from my iPad -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users