Starting the digitizing process

[beefy]

Hi Balazs / Dezsoe,

regarding digitizing a 2D freeform profile with a touch probe.

I've had nothing to do with this type of reverse engineering. Does the probe need to be placed in close proximity to the edge of the part before digitizing is started. I mean the software does not know which direction to travel when "searching" for the edge of a part. Is it to the left, or the right, or up, or down, the software has no idea. And I'm guessing the probe only moves a certain maximum distance in each direction when searching for the part edge ???

And do you know of any way to convert the point cloud to a vector line drawing/file.

Cheers,

Keith

[Vmax549]

Keith , what probing function are you try to use to do profile probing ?? As far as I know UCCNC does not have such a function. There are several ways it can be done and ways it cannot be done like with Mach3.

You cannot do a radial probing function because it does not support G15/16.

You cannot use G68/69 because you cannot probe after you have rotated.

You can create a creepy crawler function but in UCCNC it is very slow and clunky and you cannot probe in X/Y at the same time.

You can create a linear probe function and gather points.

The points are in 2d format. From there you can either use teh ppoints directly to create motion. You set teh point output to add teh Axis name X1.00 Y2.00 then add a G1 to teh start of teh point file and it becomes a simple Gcode file that can run in UCCNC and will run in teh order that you created teh points

OR you can convert teh 2D points to a DXF file and process it further in CAD then process to CAM.

IF you need help with it Email me and we can talk about it.

(;-) TP

[cncdrive]

Hi Keith,

It is simple. You need to program the endpoint in the G31 probing macro and so is how the software knows the direction of movement.
For example if Z=0 and you code G31 Z-1 then the endpoint of the probing is -1 which is lower than 0, so the axis will probe in the negative direction and it will stop at -1 if no touch happens.

[beefy]

Thanks very much Terry & Balazs,

I thought the Digitize page in UCCNC v1.2113 was for free form digitizing like in this video https://youtu.be/CsXjI1998ik starting at 2:47 minutes, or this video https://youtu.be/3IzJuQ8SO2c starting at 5:51 minutes.

I thought if I select X and Y axis only it would probe like in the video.

Have I got that completely wrong.

[thegreatwaldo]

The Shopbot probe setup is exactly what I would use. It would be great to have something the same for UCCNC !!! Pretty please!!!

Cheers
Andrew

[eabrust]

Thanks very much Terry & Balazs,

I thought the Digitize page in UCCNC v1.2113 was for free form digitizing like in this video https://youtu.be/CsXjI1998ik starting at 2:47 minutes, or this video https://youtu.be/3IzJuQ8SO2c starting at 5:51 minutes.

I thought if I select X and Y axis only it would probe like in the video.

Have I got that completely wrong.

Hi Keith,

Your interest in 2d perimeter tracing is sort of timely The first video you linked above is the ProbeIt wizard I made for Mach3 a long time ago. I've actually started to port the code into a UCCNC plugin recently. Please see here: http://www.forum.cncdrive.com/viewtopic.php?f=14&t=2385#p18900

It has a long ways to go, but having found a way to replicate a multi-axis G31 call, I'm pretty confident I'll be able to make it a workable plugin.

Just need more time in the day and less projects to work on....

regards,
Eric

[beefy]

Hi Eric,

never realised it was you that made Probeit.

I was actually thinking about getting the Probeit plugin for Mach3 but I guess I'll hang fire and see how your UCCNC plugin develops, and buy that one when ready.

Cheers,

Keith.

[thegreatwaldo]

Thanks very much Terry & Balazs,

I thought the Digitize page in UCCNC v1.2113 was for free form digitizing like in this video https://youtu.be/CsXjI1998ik starting at 2:47 minutes, or this video https://youtu.be/3IzJuQ8SO2c starting at 5:51 minutes.

I thought if I select X and Y axis only it would probe like in the video.

Have I got that completely wrong.

Hi Keith,

Your interest in 2d perimeter tracing is sort of timely The first video you linked above is the ProbeIt wizard I made for Mach3 a long time ago. I've actually started to port the code into a UCCNC plugin recently. Please see here: http://www.forum.cncdrive.com/viewtopic.php?f=14&t=2385#p18900

It has a long ways to go, but having found a way to replicate a multi-axis G31 call, I'm pretty confident I'll be able to make it a workable plugin.

Hi Eric
Will the uccnc port of probeit also have 2.5d functionality ? ie, digitizing neck shapes or body shapes from a guitar.
Cheers
Andrew

Just need more time in the day and less projects to work on....

regards,
Eric

[thegreatwaldo]

Hi Eric

I know the feeling.

Cheers
Andrew