Operating manual
CNC 8055
CNC 8055i
WORKING WITH OPERATIONS OR CYCLES
3.
·TC· OPTION
SOFT: V02.2X
·151·
Drilling and tapping cycles
3.10.3 Tapping cycle. Basic operation
The machining steps in this cycle are as follows:
1. If the operation has been programmed with another tool, the CNC will change the tool and will
move to the change position if so required by the machine.
2. The spindle starts with the speed selected and in the direction stated.
3. The tool approaches the starting point (Xi, Zi) in rapid, keeping the selected safety distance
according to axes X and Z.
4. Tapping of the part in work feedrate F, until the depth L is reached.
5. The spindle reverses turning direction.
If a dwell has been defined for the bottom of the hole, the spindle stops and after the programmed
dwell has elapsed, the spindle starts turning in the other way.
6. Withdrawal in work feedrate to the approach point.
7. Once the operation or cycle has ended, the tool will return to the position it occupied when calling
the cycle; i.e. to the point where [START] was pressed.
When executing an entire part, combination of operations or cycles, the tool does not return to
that point after executing each cycle.
8. The CNC stops the spindle, but it keeps the machining conditions set; tool (T), feedrate of the
axes (F) and spindle speed (S).
General logic output "TAPPING" (M5517) stays active while executing the cycle.
Tapping (with a clutch).
Rigid tapping. The spindle must have a servo-motor-drive system and an encoder.
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