THREADING/HARDINGE

[taylor500s]

I just purchased an older hardinge lathe it's a conquest t42 with 0t controls. I'm tring to do some exteral threading but i think mastercam puts out a different code ??? I think it needs a p value and posibblly a g76 ??

[Cobra Driver]

I know the 18T needs

 

G76 P______ Q_ R._

G76 X_._ Z_._ P Q F._

 

P value is 6 characters...first 2 are # of spring passes, second 2 are pull off distance, last 2 are is tip angle for compound feed. R is taper (if tapered threads).

 

Q is minimum depth of cut (no decimal, 4 place format), R is finish pass amount. P in your execution line is single pass depth (no decimal) F is thread lead.

[Tim Johnson]

Here's some code from a YANG with Fanuc OT. From what I understand Hardinge sells this model.

 

code:

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(TURRET NO.6 -- 1.00 DIA SHANK THREAD BAR WITH STANDARD INSERT)

N380 T0606M08

N390 G97S679M03

N400 G00X1.5Z.75

N410 G76P010060Q0030R0020

(P 1ST 00=NUMBER FINISH CUTS,2ND 00=CHAMFER AMOUNT,3RD 00=TOOL TIP ANGLE)

(Q MINIMUM CUTTING DEPTH)

(R FINISHING AMOUNT RADIUS VALUE)

N420 G76X1.6875Z-.15R0P0429Q0100F.0833

(R TAPER AMOUNT RADIUS VALUE)

(P HEIGHT OF THREAD - NO DECIMAL POINT I THINK)

(Q DEPTH OF FIRST CUT - NO DECIMAL POINT)

(F THREAD LEAD)

N430 G00Z.75

N440 M05

N450 M09

N460 G30U0W0T0000

N470 M30

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