Siemens SINUMERIK 840Di - Page 1612

Detailed Description
2.1 Path feedrate F
Feeds (V1)
2-4 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Linear feedrate (G94)
The linear feedrate is programmed in the following units relative to a linear or rotary axis:
• [mm/min, degrees/min] on standard metric systems
• [inch/min, degrees/min] on standard imperial systems
Revolutional feedrate (G95)
The revolutional feedrate is programmed in the following units relative to a master spindle:
• [mm/rev] on standard metric systems
• [inch/rev] on standard imperial systems
• [degrees/rev] on a rotary axis
The path velocity is calculated from the actual speed of the spindle according to the following
formula:
9 Q)
V: Path velocity
n: Master spindle speed
Where
F: Programmed revolutional feedrate
Note
The programmed F value is deleted when the system switches between the feedrate types
G93, G94 and G95 .
In JOG mode the behavior of the axis/spindle also depends on the setting of setting data:
SD41100 JOG_REV_IS_ACTIVE (revolutional feedrate when JOG active).
• If this setting data is active, an axis/spindle is always moved with revolutional feedrate
machine data:
MD32050 JOG_REV_VELO (revolutional feedrate with JOG)
or
MD32040 JOG_REV_VELO_RAPID
(revolutional feedrate with JOG with rapid traverse overlay)
depending on the master spindle.