Fagor 8070 BL, Руководство по программированию

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Programming manual.
CNC 8070
ELEC
TRONIC THREADING A
ND
RIGID TAPPIN
G
.
10.
Rig
id tappi
ng (G6
3
)
·189·
(R
EF
: 1709)
10.3 Rigid tapping (G63)
When rigid tapping, the CNC interpolates the movement of the longitudinal axis with the
spindle.
Programming
To define a rigid tapping, program function G63 and then the coordinates of the end point
of the thread which may be defined in Cartesian or polar coordinates. The thread pitch will
be calculated by the CNC depending on the active feedrate "F" and spindle speed "S" (Pitch
= Feedrate / Spindle speed).
Function G63 starts the spindle in the direction indicated by the programmed speed "S"
ignoring the active M3, M4, M5 or M19 functions. A negative turning speed can only be
programmed if function G63 is active.
Since G63 does not withdraw the tool automatically after the tap, an inverted tap must be
programmed in order to withdraw the tool by inverting the turning direction of the spindle (by
changing the sign of the "S" speed). If the thread is made with a cutter tip, the tool may be
also be withdrawn by orienting the spindle (M19) and separating the tool tip away from the
thread.
Multiple-entry threads
With this type of threading, it is possible to make threads with several entry points. The
positioning for each entry must be defined before each threading operation.
For rigid tapping, the machine must have a rotary encoder installed on the spindle.
i
...
G94 F300
G01 G90 X30 Y30 Z50
G63 Z20 S200
...
The thread pitch will be:
To make a 4 mm pitch thread in X30 Y30 Z0 in a single pass with a depth of 30mm.
G94 F400
G01 G90 X30 Y30 Z0
G63 Z-30 S100
M19 S0
G91 G01 X3
G90 Z10 G94 F400
G01 G90 X30 Y30 Z0
G63 Z-30 S100
G63 Z0 S-100
G01 Z10
...
G90 G01 X0 Y0 Z0 F150
M19 S0 (First entry at 0º)
G63 Z-50 S150 (Tapping)
G63 Z0 S-150 (Withdrawal)
M19 S120 (Second entry at 120º)
G63 Z-50 S150
F
S
---
300
200
---------
1 5mm , = =