Synchronous Spindle; Synchronous Spindle (Coupdef, Coupdel, Coupon/Onc, Coupof/Ofs, Coupres) - Siemens SINUMERIK 840D sl Programming Manual

Additional functions

13.5 Synchronous spindle

13.5 Synchronous spindle
13.5
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
• when activating the coupling, previous programming of the following axis is transferred
• either a measured or a known synchronism variance is corrected
.
13.5.1 Synchronous spindle (COUPDEF, COUPDEL, COUPON/ONC,
COUPOF/OFS, COUPRES)
Function
The synchronous spindle function enables turning machines to perform workpiece transfer
from spindle 1 to spindle 2 on-the-fly, e.g. for final machining. This avoids downtime caused,
for example, by rechucking.
The transfer of the workpiece can be performed with:
• speed synchronism (n
• position synchronism (ϕ
• position synchronism with angular offset (ϕ
13-12
between master and following spindle specified
FS
= n )
LS
= ϕ )
FS LS
= ϕ
FS
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
+ ∆ϕ)
LS
Job planning