Synchronous Spindle - Siemens Sinumerik 840D sl Programming Manual

9.5

Synchronous spindle

Function
Synchronous operation involves a following spindle (FS) and a leading spindle (LS), referred
to as the synchronous spindle pair. The following spindle imitates the movements of the
leading spindle when a coupling is active (synchronous operation) in accordance with the
defined functional interrelationship.
The synchronous spindle pairs for each machine can be assigned a fixed configuration by
means of channel-specific machine data or defined for specific applications via the CNC parts
program. Up to two synchronized spindle pairs can be operated simultaneously on each NC
channel.
Refer to the parts program for the following coupling actions
• defined or changed
• activated
• deactivated
• deleted
from the parts program.
In addition, depending on the software status
• it is possible to wait for the synchronism conditions
• the block change method can be changed
• either the setpoint coupling or actual value coupling type is selected or the angular offset
between master and following spindle specified
• when activating the coupling, previous programming of the following axis is transferred
• either a measured or a known synchronism variance is corrected
.
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
Axis couplings
9.5 Synchronous spindle
543