Fanuc M29 Before G84 Tap?

[machinetec]

How can I ad M29 code to my post so it comes up before the G84 so I can activate rigid tapping on a Fanuc control?

[connormac]

This is what our post says,

 

prtl # Rigid tap Leadwell

spaces=1

if drillcyc=6,[n,"M5",e

n,"M29",prv_ss,e]

spaces=0

[Matthew]

Here is what I did to my mpmaster.pst to put the M29 into the .NC program:

 

 

ptap #Canned Tap Cycle

pdrlcommonb

#RH/LH based on spindle direction

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

if use_pitch = 0,

[

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

pcan1, pbld, n, *sgdrlref, *sgdrill, pxout, pyout, pfzout, pcout,

prdrlout, *feed, strcantext, e

]

else,

[

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

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

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

pcan1, pbld, n, *sgdrlref, *sgdrill, pxout, pyout, pfzout, pcout,

prdrlout, *pitch, !feed, strcantext, e

]

pcom_movea

tapflg = 1

 

This works good for me.

 

edit: by making this change, I believe that I only have option for rigid tap now. If for some reason (haven't found one in 3 1/2 years) I would like to post code without rigid tap I would have to edit my post.

 

[ 09-17-2003, 10:02 PM: Message edited by: Matthew ]

[machinetec]

Thanks guys. I added the M29 and seems to be working fine.

[david b]

what does the m29 do???

[connormac]

I believe that is tells the Fanuc to rigid tap. I think.

 

[ 09-18-2003, 06:51 PM: Message edited by: connormac ]

[david b]

I read my fanuc book and G84 is the standard tapping cycle.M29 The synchronous tap is such that the feed rate during tapping is synchronous with the spindle rotating speed for tapping.The spindle during tapping rotates normally and reversly in synchronism with Z-axis.Accordingly,when this functionis used,a tapping holder for tapping may not be used,and even a milling chuck or slim chuck can also be used for this purpose.

Note:The feed rate at tapping is "F"=Rotating speed x pith.

 

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