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By FelixOkuma

December 5, 2015, 5:02 pm
Updated by: December 5, 2015, 11:34 pm

Css okuma lathe

Hi! I need help with constant surface speed.

I saw a video at youtube and the guy learned me to set 3 codes.
For example

Code
G97 s1500 m03
G50 s2000
G96 s600

I want the lathe to start at 1500rpm and as closer it gets to the center the closer the rpm will be to 2000rpm but now it's the opposite... what am i doing wrong

/Felixokuma

Answers:
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Eldar Gerfanov (Admin)

December 5, 2015, 11:33 pm
Updated by: Eldar Gerfanov (Admin)December 5, 2015, 11:34 pm

I used this sequence:

Code
G50 S2000 (Set Max Speed in RPM)
G96 S600 M3 (Set CSS Spindle speed in SFM)


Because you are turning on G96(CSS-Contant Surface Speed) your first G97 line is irrelevant.
Also because you are not applying m3 (if i remember how this works) your third line never works.

Because you are working with CSS your actual RPM at any point will depend on the commanded X value.

Perhaps your X is something weird?

Try the code i supplied. It should work

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