Feedrate For Tapping Without Compensating Chuck (G331, G332) - Siemens SINUMERIK 840D sl Function Manual

Figure 17-9
17.2.4

Feedrate for tapping without compensating chuck (G331, G332)

Function
A thread can be tapped without compensating chuck with the functions G331 (tapping) and
G332 (tapping retraction).
Requirement
The technical requirement for tapping without compensating chuck is a position-controlled
spindle with position measuring system.
Speed S, feedrate F, thread pitch
A revolutional feedrate [mm/rev] is used for G331 and G332. The revolutional feedrate is
defined by programming the thread pitch [mm/rev].
The speed of the axes for the thread length is calculated from the programmed spindle speed
S and the thread pitch.
Feedrate F [mm/min] = speed S [rev/min] * pitch [mm/rev]
Override
The revolutional feedrate in G331 and G332 can be influenced by an override.
Depending on the configuration, the override affects either the spindle speed or the path
feedrate:
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Convex thread in the clockwise direction with end and intermediate point programming
V1: Feedrates
17.2 Path feedrate F
1331