peck tapping g-code

[billet programmer]

Hi everyone. I need to tap some deep holes in my Toyoda HMC (Fanuc 15M). I know that the machine is capable of peck tapping but I cannot find the g-code in any of the manuals. I use G84.2 to rigid tap RH threads. Do any of you know how to do this? Thanks in advance!

[left coast lefty]

We have a Kitamura with a Fanuc 16i control, and we do peck tapping with the G84.2 by adding a "Q" value to the line representing depth per peck. I do not think Mastercam will do it, but I could be wrong.

[billet programmer]

Thanks Lefty, I'll give it a try tomorrow morning. I'll let you know how I make out.

[Craig-B]

This is from a 18i should work on 15

M29 to create rigid tap

G84(G74) X_ Y_ Z_ R_ Q_ F_ (Q for the peck depth)

 

M29 to create rigid tap

G84.2(G74.2) X_ Y_ Z_ R_ Q_ F_ (Q for the peck depth)

[billet programmer]

Thanks for the suggestions. Our Toyoda just stops at each Q depth, it doesn't reverse. I'm going to try to orient the spindle before each hole and tap each hole twice & see if it doesn't cross thread. - can't think of anything else.

[Rob @ Target Machine]

This is how I have to format for peck tapping:

 

 

code:

---

 %

O730 (PECK_TAPPING_TEST.730..MP)

(REV -)

(OP 3)

(MC-510VF MATSUURA)

(MAR-05-10)

(T5 - 2-56 GUN TAP)

G0 G17 G40 G80 G90 G94

G91 G28 Z0

G54

G90 X0 Y0

M1

(TAP 2-56 THRU)

T5 M6 ( 2-56 GUN TAP)

(MAX DEPTH - Z-.36)

G0 G90 G54 X.22 Y-.335 S1100 M8

G91 G43 H5 Z0. M3

G92 Z.05 M8

G90

G93

(PECK TAPPING CYCLE)

G98 G84 Z-.045 R.01 F.0179

Z-.09

Z-.135

Z-.18

Z-.225

Z-.27

Z-.315

Z-.36

(PECK TAPPING CYCLE)

G98 G84 X.935 Z-.045 F.0179

Z-.09

Z-.135

Z-.18

Z-.225

Z-.27

Z-.315

Z-.36

(PECK TAPPING CYCLE)

G98 G84 X1.127 Y-.36 Z-.045 F.0179

Z-.09

Z-.135

Z-.18

Z-.225

Z-.27

Z-.315

Z-.36

(PECK TAPPING CYCLE)

G98 G84 X1.607 Z-.045 F.0179

Z-.09

Z-.135

Z-.18

Z-.225

Z-.27

Z-.315

Z-.36

G94

G80

M9

G91 G28 Z0 M19

G28 Y0

G53 X-15.

(PECK_TAPPING_TEST.730)

M0

M99

%

---

This way should work in most machines that can go back into a tapped hole without cross-threading or opening up the pitch diameter.

 

HTH

[billet programmer]

Thanks Guru. That was the ticket!

[Rob @ Target Machine]

Glad I could help.

[crazy^millman]

Did you try the M29 by chance? Some machines require a M code as well as the G84.2 to peck tap.

 

HTH

[billet programmer]

Not needed for this machine, but I'll keep that in mind for the future. Thanks

[Jayson Kramer]

Sample from my 30I control.

 

%

O0000 (PECK TAPPING)

(MATSUURA H.PLUS-300)

(I30 CONTROL)

(T1 - 1/4-20 TAPRH - H1 - D#1 - D0.2500")

(***** TOOL LIST END ****)

 

G0 G17 G20 G40 G80 G90

G91 G28 Z0.

(PECK TAPPING)

N1 T1 M6 ( 1/4-20 TAPRH)

(MAX - Z9.)

(MIN - Z6.3751)

G0 G17 G90 G54.1 P4

X-1.25 Y2.625

G43 H#517 Z9.

M08

G95

M80 S366

G98 G84 Z6.3751 R7.3751 Q.1 F.05

Y1.625

X1.25 Y2.625

Y1.625

G80

M09

M5

G91 G28 Z0.

/G65 P9863 H.01 M1. (TL. BRK. DET. - EJECT PALLET WITH ERRORS)

G0 G91 G28 Z0.

G49

G90

M98 P9901 (INITIATE PALLET SCHEDULER)

M30

%

[Tinhman]

With my 03 Toyoda Fa630 (02 with 15m and 01 with 16i), I just add "Q".

HTH

[Cannon]

Is there a parameter that controls how much the tap reverses in each peck? my machine has Fanuc 18imb control.

[Guest CNC Apps Guy 1]

Yes there is. Look in the "Rigid Tapping" parameter section in your yellow FANUC manual. There's also a parameter so set full retract as opposed to the default High Speed retract.

[Travis_Buchanan]

@Jay Kramer @ Precision Programming

In the example you posted, does the the tap retract to R each peck?  Does it reverse two revs?  etc?

Is this parameter controlled?

[crazy^millman]

2 minutes ago, Travis_Buchanan said:

@Jay Kramer @ Precision Programming

In the example you posted, does the the tap retract to R each peck?  Does it reverse two revs?  etc?

Is this parameter controlled?

Travis good to see you and Happy New Year, comes down to how the control handles it. Some will go back to the R plane and others will go back to parameter value. What is the control?

[Travis_Buchanan]

Happy New Year to you Ron.  Hope you and your family is well.

Control is a Fanuc 31ib5.  I think i found it in the parameter manual.

One parameter to turn it on, another parameter to set a return value.

[crazy^millman]

21 minutes ago, Travis_Buchanan said:

Happy New Year to you Ron.  Hope you and your family is well.

Control is a Fanuc 31ib5.  I think i found it in the parameter manual.

One parameter to turn it on, another parameter to set a return value.

Yes and if you want to be real trick you can use the update parameter process in your code output to change the behavior on the fly if both parameters are on the fly adjustable without a control reset to change them. I did this on a Nakamura a couple years ago to override the percentage loop parameter to allow for broaching, but wanted it back on for normal operations. The guys in Japan gave me a slick way to turn it off for the broaching and then turn it back on after the broaching was done.