·174·
Programming manual
CNC 8055
CNC 8055i
9.
CANNED CYCLES
·M· & ·EN· MODELS
SOFT: V02.2X
G84. Tapping canned cycle
9.10.1 Basic operation
1. If the spindle was previously running, it maintains the turning direction. If it was not in movement,
it will start by turning clockwise (M03).
2. Rapid movement of the longitudinal axis from the initial plane to the reference plane.
3. Movement of the longitudinal axis and at the working feedrate, to the bottom of the machined
section, producing the threaded hole. The canned cycle will execute this movement and all later
movements at 100% of F feedrate and the programmed S speed.
If rigid tapping is selected (parameter R=1), the CNC will activate the general logic output
"RIGID" (M5521) to indicate to the PLC that a rigid tapping block is being executed.
4. Spindle stop (M05). This will only be performed when the spindle machine parameter
"SREVM05" is selected and parameter "K" has a value other than "0"..
5. Dwell, if parameter "K" has been programmed.
6. The spindle reverses turning direction.
7. Withdrawal, at J times the working feedrate, of the longitudinal axis to the reference plane. Once
this coordinate has been reached, the canned cycle will assume the selected FEEDRATE
OVERRIDE and the SPINDLE OVERRIDE.
If rigid tapping is selected (parameter R=1), the CNC will activate the general logic output
"RIGID" (M5521) to indicate to the PLC that a rigid tapping block is being executed.
8. Spindle stop (M05). This will only be performed if the spindle machine parameter "SREVM05"
is selected.
9. Dwell, if parameter "K" has been programmed.
10.Reverse the spindle turning direction restoring the initial turning direction.
11.Withdrawal, at rapid feedrate (G00), of the longitudinal axis as far as the initial plane if G98 has
been programmed.
Programming example assuming that the work plane is formed by the X and Y axes, that the Z axis
is the longitudinal axis and that the starting point is X0 Y0 Z0:
To Next Page
Loading...
