4 axis machining with CamBam V1.0

[dh42]

Hello

I just finished to translate my 4 axis tutorial to English

Feel free to give feedback if you see some translation quirks

http://www.atelier-des-fougeres.fr/Cambam/Aide_V1/tutorials/Usinage4axes_EN.htm

++
David

[lloydsp]

David,
Lest I miss the opportunity, let me say again how much value you contribute to this group!

Lloyd

[dh42]

Thanks

++
David

[Bubba]

To add to Lloyd's comment. Thank you for the work you put into this.

[dave benson]

Very good, that must have taken forever.
I did read it through(two cups of coffee).
I only found two things.
spelling 'needed'
1.

We are now going to create the 2D line that will be nedeed

2.

As for a cylinder, where the position of the drawing to be engraved must be at Z = 0 and Stock surface = at the wrapping radius, here, it is the large diameter of the cone which must be at Z = 0, the drawing to be engraved as for him, will therefore be below Z=0.

The highlighted text is not nesseccary in english.

While handy the whole 4th Axis thing has a lot of 'work arounds'.

Dave

[pixelmaker]

Thank you very much for the tutorial.
ralfg

[kvom]

Why do you think is preferable to use the rotation center as Z0 rather than the radius? 

[EddyCurrent]

Very nice, thank you for taking the time to make it.

[dh42]

Why do you think is preferable to use the rotation center as Z0 rather than the radius?

Hello

Because CamBam use the stock surface as rotation radius for wraping and to get stock surface = radius,  Z = 0 must be set at the rotation center. The other advantage is with the driving software, to compensate the feedrade depending of Z position, if Z=0 is at the center, the setting is OK for any diameter but if you use Z = 0 at the surface, you must change the "rotation radius" value(*) for feedrate compensation each time you change the diameter to machine ... and in addition with 4 and 5axis, Z=0 at the center is the norm.

(*) In mach3, it is on the Settings(Alt-6) screen, and because Mach3 have a bug, for Z=0 at the rotation center, instead to write 0 for the rotation radius, you must write a very small value like 0.00001 because if set to 0 the radius compensation feedrate is disabled.

@Dave

Very good, that must have taken forever.

Yes sure ! .... months !!! and the arrival of NCnetic helped me a lot to do tons of tests because the result on Mach3 screen is not really clear !  It is a very nice software.

Thanks for the feedback, changes done
 
++
David

[dh42]

And it's easier to do the probing on a flat surface like the table of the machine than on the surface of a cylinder, and the table/axis center distance is always the same so we can use an offset to do the Z0, for example, the axis of my A is ALWAYS 76.5mm from the table, independantly of the dimeter to machine, so I just have to probe on the table and to define an offset of 76.5mm to have my 0 in Z.

++
David

[Bubba]

Why do you think is preferable to use the rotation center as Z0 rather than the radius?
****************************

Because working from center is the accepted standard in the industry.

[Tool-n-Around]

That's great David, looks like a lot of work. Thank youso much. I think I have just the project for it. No Mach 3 though but I think I can do it with just positioning and a combination of 2D, 3D, and wrapping. I will revive the post when I get back on it.

https://cambamcnc.com/forum/index.php?topic=9402.msg73431#msg73431

Best,
Kelly