POST FOR TAPPING

[lou]

Is there a good post for tapping on the FADAL's

 

Thanks,

[n_tydingco]

Lou, You can try the post that I'm going to send you.

[Trevor Bailey]

What version are you running? You may simply need to "turn on" the rigid tapping in your post. Maybe in your text file, the misc variable has not been labled for you, there for only the "G84" code by itself may only be posted. Check you post and do a search for "G84.1". I would be willing to bet, that this may be your problem if you are indeed using a fadal post.

[Roger Martin from CNC Software]

Lou,

 

This is from the old (v8) MPFADAL.PST that is being used to program hundreds of FADALs in MI.

 

It supports tapping modes:

 

Non-Rigid: using G84 or G85 cycle depending on the post switch setting->

 

tap_G84 : no # Use 'G84' when tapping (NO = use 'G85')

 

The G85 cycle looks like ->

 

N22 M49

N24 G99 G85 X1. Y1. Z-1. R0.1 F.0625

N26 X2. Y2.

N28 G80

N30 G8

N32 M48

 

'G85' for tapping?

Someone wanted it - that is why it's there!

 

The G84 cycle is the unique FADAL format ->

Where 'Q' = 1 / threads per inch

Where 'F' = rpm without the S

 

Sample output looks like ->

N22 M49

N24 G99 G84 X1. Y1. Z-1. R0.1 Q.0625 F500.

N26 X2. Y2.

N28 G80

N30 G8

N32 M48

 

RIGID TAPPING:

 

It also supports G84.1 (G74.1) rigid tapping which requires additional codes prior to the actual tapping cycle block.

 

N12 M6 T2

N14 G0 X1. Y1. E01

N16 G0 G90 S.2 M5 M90

N18 G84.2

N20 H2 Z.1 M7

N22 G8

N24 G99 G84.1 X1. Y1. Z-1. R0.1 Q.0625 F500.

N26 X2. Y2.

N28 G80

 

Also, this post forces coolant to MIST setting is Rigid Tapping.

 

You can rid yourself of this by removing one line in the PST ->

 

if rigid_tap = yes, coolant = 2 # Use Mist Coolant on Rigid Tapping

 

-------------------------------

 

Note that the RIGID tapping is an additional cycle.

 

*The usual TAPPING cycle slot outputs G84 or G85 cycles.

*The Rigid tapping cycle is furhter down on the cycle dropdown list.

 

If the MPFADAL.TXT file is missing you would never know that the post supports rigid tapping - unless you looked in the PST file.

 

PostGuy