Detailed Description
2.1 Path feedrate F
Feeds (V1)
2-20 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Control system response
At POWER ON and RESET, the retraction path is set as configured (MD), as is the state of
LFON or LFOF and LFTXT or LFWP using machine data:
MD20150 GCODE_RESET_VALUES
from the corresponding G group.
Smoothed actual values
If low-resolution encoders are being used, smoothed actual values can be applied for
constant coupled path and axis motions.
Machine data:
MD34990 ENC_ACTVAL_SMOOTH_TIME
can be used to change the time constant for more effectively smoothed actual values for:
• Thread cutting with feedrate for G33, G34, G35
• Revolutional feedrate for G95, G96, G97, FRAPON
• Display of actual positions and actual speed/velocity
The larger the time constant, the better the smoothing of the actual values and the longer the
overtravel.
2.1.5 Feedrate for G331/G332, rigid tapping
Application
G331 (tapping) and G332 (tapping retraction) can be used to tap a thread without a
compensating chuck (rigid tapping) if the spindle is technically capable of operating in
position control mode.
Speed S, feedrate F, thread lead
A revolutional feedrate [mm/revolution] is used for G331and G332 threads. The revolutional
feedrate is defined by programming the thread lead increase [mm/revolution].
The speed of the axes for the thread length is calculated from the programmed spindle
speed S and the thread lead.
Feedrate F [mm/min] = speed S [rev/min] * thread lead [mm/rev]
Note
For further information about programming G63/G331/G332, please see:
References:
/PA/ Programming Guide, Fundamentals
/PAZ/ Programming Guide, Cycles
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