Puma 230MSB and thread milling

[2alpha]

After trying for way too long I found out that the Puma230MSB can't thread mill along the Z axis because it has no Y axis. Trying to use g12.1 gives me a plane selection error. There has to be a way to get around this because I need to thread soft nylon and single pointing only makes a mess of it.

I'm using a Z live tool drive and can easily take the cut in one pass but how do I calculate the feed rate for 18TPI?

[Superman]

Puma 230MSB is a lathe with C-axis, right ?
you don't need a Y
- bring the tool down to clearance on Ø
- start sub-spindle
- feed cutter to Ø
- feed ( C-axis 360° CW ) & ( Z- axis 1 pitch ) in 1 block
- feed cutter out, & done

ie. 150mm thread x 3mm pitch x 10mm deep

G144 ( eg. code for milling mode)
G0 X100. Z0. C0.
Z-7.
G101 X75. F100.
G102 Z-10. C360.
G101 X100.
G0 Z0.
G145 ( eg. code for turn mode )

Note--my g-codes are ficticious, but the concept is thee

[2alpha]

Thanks!

I'll give this a try this AM.

I was over thinking the entire process.

Jim

[chucker]

Heres one I did last week with no Y axis just used C X Z axis and live tooling
N60T0808(18 PITCH N.P.T. THREAD MILL)
M24
G54.1P1
S2315M33
G0X0Z.1C0M8
G98
G1Z-.6F50.
X.168Z-.5725H180.F7000.
Z-.5169H360.
X0Z-.4891H180.
G0Z5.M9

[2alpha]

And it works like it should.

Just wish I could get the C rotation past 12000 deg / min.

Thanks