Need Help!- Fadal peck tap ?

[machine time]

Has anyone out there used a "peck tap" cycle on a Fadal? is it possible?
1998 and 2005 fadal's with cnc 88 control, ridgid tap, format 2

Thanks in advance for any info

[Neal]

Machine time--
Peck tapping is easy. just a progamming trick and not a canned cycle. It only ecceftive in rigid tapping. Follow this format:

This is for Format 1:
G0G90G40G80G17E1X?Y?M5
H1Z1.0
G84.1G99R0+.2F800.Q.050Z-.25
R0+.2Z-.35
R0+.2Z-.45
R0+.2Z-.5
G0Z1.
G80X0Y0Z0H0

Try it out and watch what happens. Obviously you need to add some codes as tis is not a complete routine.

Neal

[TRIMI]

dont put G84.1
G98.G84.R-.9Z-1.25F15.S245. this for 3/8 16 and F12. S185. 1/2 13

THERES ANOTHER ONE I can remember

[machine time]

Thanks for the reply, I had really hoped to do this in format 2, it is all I have used for many years (old dog). If I just program multiple G84.1 cycles with different z depths will the tap start back in the thread at the same place? I will do some test cuts Monday but it would be nice to start with some good info. I am cutting a 4-48 double lead thread in titaniun with a solid holder (not spring loaded) I have about 9000 holes to drill and tap!

[mike852]

I have done this opperation many times the tap will follow the previous thread. The only problem with going back into the hole is that the top of the hole will open up and the nogo gage will start to go. With that many holes you may want to invest in a thread mill. I have started to use these more in tough mat'l and they work great.

[Neal]

If you do not use the G84.1 code, you are NOT using the rigid tap function. The line for format 2 would be:

This is for Format 2:
G0G90G40G80G17E1X?Y?M5
H1Z1.0
G84.1G99R0+.2F50.S1000Z-.25
R0+.2Z-.35
R0+.2Z-.45
R0+.2Z-.5
G0Z1.
G80X0Y0Z0H0

Use this format to do peck tapping.

Neal

[David Michael]

Three things to remember:
1) Accuracy is a function of speed, go slower at first then try and speed it up.
2) The tuning of the spindle servo system (drive and SETP) and the Z axis will affect the accuracy of the servo tracking both in and out.
3) Lubrication, you can't beat a good Tapmatic fluid when re-entering a thread.