[Scott_M]

I was messing around with the vertical lathe setup this weekend and found that it can do G96 (CSS) constant surface speed. I had read in the mach forums that it was bugy and wanted to see. it turns out that it only has a problem in FPR feed mode ( G95 feed per rev ) but it seems to work fine in FPM ( G94 feed per minute ) mode. I am not really sure how much I would use this but " I had to know"
The code for this cut is..

G20 G40 (inch and clear any comp.)
G00 X1.635 Z-0.02 (rapid to start point)
G48 S4000 (set max spindle speed)
G96 S300 M3 (select CSS and sfm and start spindle)
G94 (set to feed/min)
G01 X-.05 F3 (feed to X... @f3)
g0 z.1 (retract to safe Z)
x2.1 (retract to clear work )
G97 S0 M3 (set to rpm mode)
M30 (all done)

The G48 sets a max allowable rpm ( I wasn't sure how fast I could spin that R8 chuck)
Not sure how much I will use this...but I thought it was cool.

Listen to the spindle ramp up as the diameter gets smaller.

[ame=http://www.youtube.com/watch?v=DllPNbqfnvY]G96 test on Tormach vertical lathe - YouTube[/ame]

Scott

[TXFred]

Scott,

Would you be willing to share your Mach config file with me? I'd like to try this out, and don't want to have to reinvent the wheel.

Frederic

[Scott_M]

I would have to check with Tormach. I think you will need to sign the waiver to use it.

Scott

[TXFred]

OK. I can sign the waiver if need be. I didn't realize it was a Tormach file. I thought it was one that you had developed on your own.

Frederic

[Scott_M]

Hi Fred
I did do the file. But in order to use it you have to have the unlocked version of Mach. Otherwise you cannot select that configuration at startup. I cloned the base config and renamed it Vertical Lathe .

I will talk to Tormach tomorrow.

Scott

[davidperry3]

"Would you be willing to share your Mach config file with me? I'd like to try this out, and don't want to have to reinvent the wheel."

+1