Feed (V1); Path Feedrate F - Siemens SINUMERIK 802D sl Function Manual

Feed (V1)

24.1

Path feedrate F

Functionality
The feedrate F is the path velocity of the tool along the programmed workpiece contour. The
individual axis velocities therefore result from the portion of the axis path in the overall
distance to be traversed.
The feedrate F is effective for the interpolation types G1, G2, G3, CIP, and CT and is
retained in a program until a new F word is written.
Reference:
/BP_/ Operation and Programming
Dimension units for F: G94, G95
The dimension unit for the F word is determined by G functions:
● G94 F as feedrate in mm/min or inch/min
● G95 F as feedrate in mm/rev of the spindle or inch/rev
The inch dimension system applies with G700 or system setting "inch" with
MD10240 SCALING_SYSTEM_IS_METRIC=0.
Dimension units for F with G96, G97
For lathes the group with G94, G95 has been extended by the G96, G97 functions for the
constant cutting rate (ON/OFF). These functions also influence the S word.
With activated G96 function, the spindle speed is adapted to the currently machined
workpiece diameter (transverse axis) such that a programmed cutting rate S remains
constant on the tool edge (spindle speed times diameter = constant).
The S word is evaluated as the cutting rate as of the block with G96. G96 is modally effective
until cancellation by another G function of the group (G94, G95, G97).
The feedrate F is always evaluated in the unit of dimension of mm/rotation or inch/rotation
(as for G95).
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
(only meaningful when the spindle is running)
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