g76 thread cycle for dummies 20i fanuc

[stmeng]

I would like a copy of g76 cycle. My email addres is as follows:
stmeng@hotmail.com

[daleh100]

dcrace
I would also like a copy of the canned cycle cheat sheat. Thanks for taking the time to do this.
daleh@ntin.net

[bigmantate]

Please e-mail me a copy oy your "cheat sheet" of lathe canned cycles I made up to help train new setup people. If anyone is interested, I can e-mail it to you in excel format.[/QUOTE]

tate0663@yahoo.ie

Thanks

[stmeng]

I would like a copy oy your "cheat sheet".

stmeng@hotmail.com

thank you.

[fatcityfab]

Can you please send me a copy of the cheat sheet.
fatcityfab@yahoo.com
Thanks

[mat 1]

G0X__Z__(approach Point
G76P_Q_R_
G76X_Z_R_P_Q_F_

First G76 Line Info
G76 P010060 Q00500 R.001 (finish Passes)
G76 P010060 Q00500 R.001 (chamfer Amount At End Of Thread)
G76 P010060 Q00500 R.001 (tool Tip Angle)
G76 P010060 Q0050 R.001 (minimum Depth Of Cut - Radial Value)
G76 P010060 Q0050 R.001 (finishing Pass Depth)

Second G76 Line Info
G76 X Z R P Q F (minor Dia Of Male)(major Dia Of Female)
G76 X Z R P Q F (end Point Z)
G76 X Z R P Q F (radial Diff. Of Tapered Thread)
G76 X Z R P Q F (height Of Thread - Radial Value)
G76 X Z R P Q F (first Depth Of Cut - Radial Value)
G76 X Z R P Q F (feedrate / Pitch)
***R Value Can Be Omitted If Cutting A Straight Thread***

EXAMPLE CODE FOR 1/2-13 THREAD, WOULD BE AS FOLLOWS:
(TURN ON SPINDLE, CALL UP TOOL, TURN ON COOLANT HERE)
G0X.6Z.2
G76P020060Q0050R.0005
G76G76X.404Z1.0P0100Q0472F.0769

This is part of a "cheat sheet" of lathe canned cycles I made up to help train new setup people. If anyone is interested, I can e-mail it to you in excel format.

hi,
i seem to getting flat threads on these plastic components i am machining.Any chance of sending me a g76 cycle for an m102 2mm pitch internal?

thanks

[Karl_T]

I'm late to the party. This cheet sheet has a couple more details somebody might need.


'*******TWO LINE FANUC G76 INSTRUCTIONS*********************

'NOTE: Use G0,G1 to position machine at start of thread(Z) and retract height(X) before G76 lines.
' Important: X position determines ID or OD threads


'EXAMPLE G76 LINE 1 FOR 1/2" ROD 20 TPI
'G76 P011060 Q50 R10
'first two digits after P number of finish cut passes
'second two digits after P number of leads to pull out/10, 10 is 1 lead
'third two digits after P is tool tip angle, tool will infeed at 1/2 this angle
'Q is minimum DOC cut in tenths, example 50= .0050 depth radius
'R is DOC finish passes in tenths
'S is optional spindle speed, spindle must be running with an earlier M3 M4 code

'EXAMPLE G76 line two 1/2" rod 20 TPI .5" long 1 thou taper (Z 0 at start of thread)
'G76 Z-.5 X.4567 P433 Q100 F.05 R.001
'Z is end of thread Z value
'X is final diameter of thread value; minor dia. on O.D., major dia. on I.D. (LH) threads
'P is thread height in tenths, 433 is .0433 high, generally COS(infeed angle)*1/thread pitch
'Q is depth of cut for first cut in tenths
'F is feed per thread, 1/LEAD for US
'R is for tapered threading difference in X from start to finish in Z

[carlos3z]

send me a copy too of excel spreadsheet G76 MY E-MAIL IS carlos3z@sbcglobal.net

[Spiderman]

On the second G76 line, the 'Q' is related to the first depth of cut. When I use Q0050 which equates to .005/side, my internal thread on the first cut is moving to .013/per side. I am programming a Fanuc O-T on a Yang ML-55A lathe. Any suggestions as to why this is happening? Below is my code for a 1 1/2-6 internal thread:

(Minor diameter is bored to 1.34)

G0X1.1Z2.0
Z0.5M8
G76P020060Q0030R0.001
G76X1.5Z-2.2P820Q0030F0.1666

Also, I would like a copy of your cheat sheet. Thank you for your help.

soul_coughing03@yahoo.com

[Shane1234]

On the second G76 line, the 'Q' is related to the first depth of cut. When I use Q0050 which equates to .005/side, my internal thread on the first cut is moving to .013/per side. I am programming a Fanuc O-T on a Yang ML-55A lathe. Any suggestions as to why this is happening? Below is my code for a 1 1/2-6 internal thread:

(Minor diameter is bored to 1.34)

G0X1.1Z2.0
Z0.5M8
G76P020060Q0030R0.001
G76X1.5Z-2.2P820Q0030F0.1666

Also, I would like a copy of your cheat sheet. Thank you for your help.

soul_coughing03@yahoo.com

double check your 2nd line p value then, because that also correlates your first cut if you have it too small. your p too small would tell it that it has less material, so its basing your first Q value off what it thinks it has for p.

[tanvon]

hi, for more info about G76 on fanuc cnc controls see my cnc blog post about G76 threading cycle CNC Canned Cycle G76 Threading Cycle for Fanuc CNC Machine Control. The cnc blog also has other cnc programming examples as well.

[ESP666]

Im new to this site, I just started work on CNC programming on Fanuc controllers.Its all new to me and its pretty cool stuff.Thanks for the explanation of the lines in the threading canned cycle. If you could send a copy of the cheat sheet id appreciate it, its a steep learning curve for me!Any recommendations of books to reference would be cool aswell, i have a copy of the cnc programming handbook that seems pretty good. my email is jimmipage@hotmail.com for thre cheat sheet.cheers for your help

[bule71]

Please e-mail me a copy oy your cheat sheet...
ifet.bukva@bredband.net

[karlbart]

hi, would love a copy of your canned cycle for idiots karlbart@fairpoint.net

[Helman Jr.]

G0X__Z__(approach Point
G76P_Q_R_
G76X_Z_R_P_Q_F_

First G76 Line Info
G76 P010060 Q00500 R.001 (finish Passes)
G76 P010060 Q00500 R.001 (chamfer Amount At End Of Thread)
G76 P010060 Q00500 R.001 (tool Tip Angle)
G76 P010060 Q0050 R.001 (minimum Depth Of Cut - Radial Value)
G76 P010060 Q0050 R.001 (finishing Pass Depth)

Second G76 Line Info
G76 X Z R P Q F (minor Dia Of Male)(major Dia Of Female)
G76 X Z R P Q F (end Point Z)
G76 X Z R P Q F (radial Diff. Of Tapered Thread)
G76 X Z R P Q F (height Of Thread - Radial Value)
G76 X Z R P Q F (first Depth Of Cut - Radial Value)
G76 X Z R P Q F (feedrate / Pitch)
***R Value Can Be Omitted If Cutting A Straight Thread***

EXAMPLE CODE FOR 1/2-13 THREAD, WOULD BE AS FOLLOWS:
(TURN ON SPINDLE, CALL UP TOOL, TURN ON COOLANT HERE)
G0X.6Z.2
G76P020060Q0050R.0005
G76G76X.404Z1.0P0100Q0472F.0769

This is part of a "cheat sheet" of lathe canned cycles I made up to help train new setup people. If anyone is interested, I can e-mail it to you in excel format.

Although the thread is old but I have something to say...
The line
G76 P010060 Q00500 R.001 (tool Tip Angle)
in fanuc control manual it is stated as flank angle.
this value helps us to control the thread infeed angle for every pass.
The following indeef angles can be used as infeed angles with G76 fanuc threading cycle. 80, 60, 55, 30, 29, 00

For more info you might read Controlling Threading Infeed Angle with Fanuc G76 Threading Cycle

[cadcamsa]

i like the way you detailed the explanation. i think it will help me well.
thanks

[bdallas]

Like the way you set up heat sheets , have new puma and am needing to train some helpers could you email me your cheat sheets.. Thank you Brad Dallas
brad_dlls@yahoo.com

[tibea211]

thanks for your posting.

Would it be possible for you to forward your spreadsheet of g76 setups?

Thanks in advance
Tim

[Darth Yoda]

Hey dgrace, you still have your cheat sheets? If so, can you send one here? quasifun@yahoo.com Thanks a ton.

[300blkout]

If you still have your cheat sheet available, Id appreciate a copy!
skopras@yahoo.com
Thanks!