Left Or Right Tapping Cycle (G84 Or G74) - Siemens Sinumerik 840D sl Programming Manual

Unit of the F command
G94
G95
Example
Feedrate for the Z axis 1.000 mm/min
Spindle speed 1,000 rev/min
Thread lead 1.0 mm
<Programming as feedrate per minute>
S100 M3
G94
G00 X100.0 Y100.0
G84 Z-50.0 R-10.0 F1000
<Programming as revolutional feedrate>
G95
G98 Y-700.
G00 X100.0 Y100.0
G84 Z-50.0 R-10.0 F1.0
4.1.13

Left or right tapping cycle (G84 or G74)

Due to the chips adhering to the tool and an increased resistance associated with this, it may
be difficult to perform the deep hole tapping without compensating chuck. In such cases the
tapping cycle with chip breakage or chip removal is helpful.
The cutting movement is executed in this cycle till the root is reached. There are a total of
two tapping cycles for this: Deep hole tapping with chip breakage and deep hole tapping with
chip removal.
The G84 and G74 cycles can be selected with GUD _ZSFI[1] as follows:
_ZSFI[1] = 2: Deep hole tapping with chip breakage
_ZSFI[1] = 3: Deep hole tapping with chip removal
ISO Milling
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
Metric input
1 mm/min
0.01 mm/rev
;Feedrate per minute
;Positioning
;Tapping without compensating chuck
; Rev. feedrate
;Positioning, drilled hole 6,
;then return to initial plane
;Positioning
;Tapping without compensating chuck
4.1 Program supporting functions
Input in inch
0.01 inch/min
0.0001 inch/rev
Additional functions
Remarks
Decimal point
programming is
permitted
Decimal point
programming is
permitted
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