two spindle commands

[Mr. Dayshift]

Hello forum,

 

I am trying to remove the first spindle command from this tap cycle. Any help will be appreciated. I'm using MCX,MR2, MPMASTER with a Fanuc O-M.

 

 

T4 M06 ( 5/16-18 TAPRH)

(MAX - Z1.)

(MIN - Z-.75)

G00 G90 G54 X.56 Y-1.5 S855 M03

G43 H34 Z1. T5

M08

G95

M29 S855

G98 G84 Z-.75 R.1 F.0556

X4.06

X.56 Y1.5

X4.06

G80

G94

M09

M05

 

**************************************************

 

ptap$ #Canned Tap Cycle

pdrlcommonb

#RH/LH based on spindle direction

if use_pitch, pbld, n$, "G95", e$

if use_pitch = 0,

[

pcan1, pbld, n$, *sgdrlref, *sgdrill, pdrlxy, pfzout, pcout,

prdrlout, *feed, strcantext, e$

]

else,

[

pbld, n$, "M29", *speed, e$

if met_tool$, pitch = n_tap_thds$ # Tap pitch (mm per thread)

else, pitch = 1/n_tap_thds$ # Tap pitch (inches per thread)

pcan1, pbld, n$, *sgdrlref, *sgdrill, pdrlxy, pfzout, pcout,

prdrlout, *pitch, !feed, strcantext, e$

]

pcom_movea

tapflg = 1

[crazy^millman]

Have you checked the post for a switch to turn it off?

[DavidB]

Code looks good to me.

Why do you want to remove the first spindle comand?

 

It is coming from ptlchg_com not the ptap.

[ToolMan184]

To ridgid tap you want the M29 S855.

[Mr. Dayshift]

"Code looks good to me.

Why do you want to remove the first spindle comand?"

 

I have two different posts which each output this double spindle command. Neither of my samples from the manuals do not have the first S____ and M03.

 

I understand the command is controlled from a 'common blocks area'. I have not found a switch to turn it off.

 

 

Any suggestions?

[Roger Martin from CNC Software]

David is correct, the (first) spindle speed & spindle start come from the ToolChange postblock logic in the PST.

 

You would need to add logic in ptlchg_com to test the opcode$ & nextdc$ to know if you need to suppress the 'toolchange' RPM output ->

*Note: that "nextdc$ = 3" here assumes that the "std" Tap cycle in the PST is being used for Rigid tapping.

So, you may need to adjust the value tested for.

code:

---

      if opcode$ = 3 & nextdc$ = 3,  #check for rigid tap = NO "speed" output

pcan1, pbld, n$, *sgcode, [if not(index), sgabsinc, pwcs], pfcout, *spindle, strcantext, e$

else,

pcan1, pbld, n$, *sgcode, [if not(index), sgabsinc, pwcs], pfcout, *speed, *spindle, strcantext, e$

---

[?Mark]

Also to add to above check out Generic Fanuc 3X Mill post. It has two tapping cycles setup, one "regular" and one "rigid" under misc2. Once you look at it it'll be self explaining...

 

hth

[Mr. Dayshift]

Roger Martin,

 

That's pretty close to what i need, however, the M03 should not be there.

 

 

*************************

T2 M06 ( 5/16-24 TAPRH)

(MAX - Z.1)

(MIN - Z-1.)

M08

G00 G90 G54 M03

G43 H32 Z.1 T1

G95

M29 S855

G99 G84 Z-1. R.1 F.0417

G80

G94

***************************

[Allan]

Take out the *spindle like this:

 

code:

---

 if opcode$ = 3 & nextdc$ = 3,  #check for rigid tap = NO "speed" output

pcan1, pbld, n$, *sgcode, [if not(index), sgabsinc, pwcs], pfcout, strcantext, e$

else,

pcan1, pbld, n$, *sgcode, [if not(index), sgabsinc, pwcs], pfcout, *speed, *spindle, strcantext, e$

---

[?Mark]

Looks like it's an older generic fanuc post, so why don't you try and change it to this in your psof$ and ptlchg$ part of post.

 

Right after a tool change command:

 

if nextdc$ <> 3, *speed, *spindle,.....e$

[Mr. Dayshift]

Thanks to everyone who had the time to read or contribute to this topic, the code is minty.

 

Curt.