Need Help ! Fanuc 3T - Rigid Tapping

[Jerry7]

Need Help ! Fanuc 3T - Rigid Tapping

Need your help with the following, please...machine is an old Taiyo Seiki 1N, from 1985, 2 axis cnc lathe, running under Fanuc 3T-C.
Is there any option to achieve -rigid tapping- ,as original sheet of M and G codes doesn't mention it ?
Original Operator's Manual missed....just have a generic Fanuc 3T manual.
Any hint will be higly appreciated

Jerry7

jerrygroehn@gmail.com

Attached two sheets with original machine G and M codes.

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[regina]

Pretty sure that control is too old to have that feature.

[Chris D]

Rigid tapping didn't become available until later controls.

[regina]

You can still tap with it, you just need a floating tap holder with tension, compression, and probably adjustable torque.

[Heavy_Metal]

Hi regina,

Disadvantage of a tapholder is its lenght.
For taps up to M10 you can also use special floating ER collets with axial extension stroke.
They have only an extension stroke but no compression stroke so the infeed is 95%-98% of the pitch ( feed ), reverse feed (out) is 100%.
For the FAHRION CET-GB-ER32 collet the shankdiameter range is from 4.5mm up to 12.5mm
When you buy the 12.5mm collet you can make different reducer bushings for different taps.
Prices for the ER32 collet approx. $120,-

When you don't have the canned cycles just use a program like this, its only for tapping, pitch 1.25
%
O1000
( TAP M8 X 1,25MM )
T0909
G50 S300
G97 S300 M03
G00 Z5. ( SAVE Z-DISTANCE )
/M08
X0
G01 Z-12. F1.225 ( INFEED - 98%)
M05
G04 X0.5
M04
G01 Z5. F1.25 ( OUT FEED 100% )
G00 Z30. M05
X300. Z50. T0900
M30
%

Regards,
Heavy_Metal.