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Author Topic: Mach 3 Turn: CSS Mode  (Read 3317 times)

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Mach 3 Turn: CSS Mode
« on: September 12, 2012, 06:27:33 PM »
Hi,

I'm currently using Mach 3 Turn demo and I'm just trying to see if I can get CSS(Constant Surface Speed) mode to work. I wrote up some example code that should let me see on Mach3 the spindle speed increasing as the X diameter decreases however the spindle speed is remaining at a constant 50 the whole time.

Could this be because I'm just running the code in simulation mode(I'm not hooked up to a real lathe with an encoder so I have no feedback) or is CSS mode a non-demo feature?

Here is the code I'm using, it should let me see the spindle speed increasing:

G21 G40 (metric and clear any comp.)
T0101 (select tool 1 offset 1)
G00 X100. Z10. (rapid to start point)
G48 S1000 (set max spindle speed)
G96 S50 M3 (select CSS)
G95 (set to feed/rev)
G01 X10. F.2 (feed to 10mm dia)
X100. (feed back to start point)
G97 S1000 M3 (set to rpm mode)
M30 (all done)



Thanks for your time!

Offline Hood

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Re: Mach 3 Turn: CSS Mode
« Reply #1 on: September 13, 2012, 03:22:04 AM »
With no feedback how can you see the spindle speed?
Not sure if CSS is available in Demo or not.
CSS doesnt work correctly with G95 and never will in Mach3 as its not possible to do it the way Mach3 works, Mach4 will solve this I am assured.
Hood
Re: Mach 3 Turn: CSS Mode
« Reply #2 on: September 19, 2012, 07:33:22 PM »
@Hood: Are you saying CSS does not work at all in Mach3 so I shouldn't even bother with it?

Offline Hood

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Re: Mach 3 Turn: CSS Mode
« Reply #3 on: September 20, 2012, 03:00:16 AM »
It doesnt work correctly in G95 mode, spindle will speed up or slow down fine but the feed per rev does not keep up.
Hood