Internal turning/machining?

[hitchhiker]

Hi dudes!

i use cambam only for my mini mill.

now i got a small lathe! a Unimat 3.
i spend some days to convert it to cnc.

now all work great!
i can turn external all what i want!

but i need some information to machine internal.

how can i do this? is it possible with cambam?

the boring is done manual!
i need only a little bit of help to machine from inside.

thanks.

[EddyCurrent]

From the manual,

"In this initial lathe release there are a number of limitations:

    Only profiling operations are currently supported. No facing, boring or threading support yet.
    Apart from the tool radius, there is no mechanism to define a lathe tool shape. The part should be drawn to allow for the cutter size and shape."

[stevehuckss396]

Hello Hitchhiker!

I do a fair amount of turning. Fortunately 90 percent of the cutting needed to make small parts on a lathe are straight cuts. I typically use CamBam for the final cuts and just hand code the roughing cuts as they are straight cuts. I only have one video on Youtube of a sparkplug body being machined internally. The part gets center drilled. Then a blind hole is drilled to depth. The mini boring bar counterbores a step. Then an endmill goes in to square up the bottom of the hole. All was done by hand and worth the time because I make hundreds of them.


https://www.youtube.com/watch?v=xeto_uw3hy0

[dh42]

Hello

A workaround is to mount the tool reversed (so with the insert that point to the rear of the lathe) and to do the toolpaths in the same way as for external cut.

++
David

[lloydsp]

But don't forget to reverse the rotation of the work, unless you want to mount the tool upside-down!

Lloyd

[dh42]

Yes, revert rotation if L tool but normal rotation if R tool.

++
David