A few notes about the New HAAS SL20

[tobyaxis]

Today I had to put a full radius on the front of a shaft.

A note to what does not work, LOL.

BTW: These Shafts are 60Rc Case Hardened .08 thick. We are using Ceramic Inserts. The feeds and Speeds need a little tweaking but in due time.

G0G40G55G80G99M5
G50S1500
G28U0W0M9
M1

N1000(STOP)
T909
G98G55G40G0Z.5
G1X1.F150.
Z.1F15.
M0(BANK BAR)

G99G40G0X2.Z1.
G28U0W0
M1

N1(CNMA432 100DEG. FACE)
T101M8
G96S200M3
G55G40G0X2.01Z.1
G72P10Q15W.003D.03F.005
N10G41G0Z0.
G1X0.F.002
N15Z.1
G40G0X2.Z.1
G70P10Q15
G40G0X2.Z.1M9
G28U0W0
M1

N2(CNMA432 R-RADIUS)
T303M8
G96S200M3
G55G40G0X1.65Z.1
G71P20Q25U.003W.002D.04F.002
N20G42G0X0.
G1Z0.F.002
G3X1.575Z-.7875R.7875 << The machine wants to cut past 90 Degrees for some reason. So I changed it to G3X1.575Z-.7875I0.K-.7875 and all is well.
G1Z-.85
N25X1.65
G40G0X1.65Z.1
G28U0W0
M30

Why is a 1987 Fanuc 10T on a Dainichi BX45 Slant able to do this (G3X1.575Z-.7875R.7875) and a NEW HAAS not able to do this simple task??

Seems pretty strange. Any Ideas??

[Geof]

Look in the Haas Settings for #43 Cutter Comp Type which has two selections A or B and change it to the other selection and see if it makes a difference.

[beege]

Or maybe, the tool start point (X0) puts the X tip of the tool on center, not touching the part except a distance away from center on the Z. The subsequent R word then creates a radius from that point, and goes more than 90 degrees. Changing to I and K redefined where the arc center is supposed to be. Here's what I'd probably program:

But then I've never done Haas...

N2(CNMA432 R-RADIUS)
T303M8
G96S200M3
G55G40G0X1.65Z.1
G71P20Q25U.003W.002D.04F.002
N20G42G0X-.06 (or twice the tool radius)
G1Z0.F.002
G3X1.575Z-.7875R.7875
G1Z-.85
N25X1.65
G40G0X1.65Z.1
G28U0W0
M30:

[tobyaxis]

Originally Posted by beege Or maybe, the tool start point (X0) puts the X tip of the tool on center, not touching the part except a distance away from center on the Z. The subsequent R word then creates a radius from that point, and goes more than 90 degrees. Changing to I and K redefined where the arc center is supposed to be. Here's what I'd probably program: But then I've never done Haas... N2(CNMA432 R-RADIUS) T303M8 G96S200M3 G55G40G0X1.65Z.1 G71P20Q25U.003W.002D.04F.002 N20G42G0X-.06 (or twice the tool radius) G1Z0.F.002 G3X1.575Z-.7875R.7875 G1Z-.85 N25X1.65 G40G0X1.65Z.1 G28U0W0 M30:

You have a Point with the TNR Comp. I did change the first Sequence in the canned cycle by Omitting the G42 as well as using the I and K Designations.

I have to make 2 more of these tomorrow and i will look into the Parameter #43 and the TNR Comp.

I just thought it was weird that an older control was able to do this and the new one seemed to have a brain fart.

In times like these I thank God for "Old School".

Thanks for the tips guys.

BTW: anyone use the Greenleaf Ceramic CNGA432 T1 WG-300 Inserts. Their website does not provide Recommendations SFM, DOC, or IPR and i do not want to waste inserts.

My Feeds, Speeds, and DOC's seem a little on the light side. Heck I don't even know if I should be using coolant with these inserts. My best guess is "No Coolant" but I am a bit hesitant, LOL.

First time Hard Turning