Programming instructions

NC Programming 17VRS Motion Blocks
4-59
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
zation speed, the NC switches to position control and rotates the syn-
chronized spindle to the set position within one revolution using the short-
est direction. If the master spindle and the synchronized spindle are
stopped, the synchronized spindle simply traverses to its command posi-
tion taking the existing translation ratio and the existing angular offset and
position offset into account.
The NC switches all spindles involved in the synchronization to position
control. If functions such as M03, M04 or G95 are active when main spin-
dle synchronization is activated, the NC continues position control mode
for these spindles. The changeover operation does not have any negative
effects on the surface of the workpiece.
Main spindle synchronization can be canceled without regard for the op-
erating mode by resetting the activation interface signal. All spindles in-
volved in the synchronization retain their speeds after cancellation. If the
spindles must stop after cancellation, this must be programmed by means
of M05 or M19 after synchronization has been canceled. When the syn-
chronization is deactivated, the NC switches the spindles which were in-
volved in the synchronization back to speed (rpm) control if a function
which normally runs under rpm control is active at this time.
NC Programming
None of the synchronized spindles which participate in main spindle syn-
chronization may be programmed during synchronized operation. How-
ever, if an attempt is made to do this, the NC terminates program execu-
tion and issues an error message.
Furthermore, the master and synchronized spindles must not be operated
in the rotary axis mode and a gear change must not be performed during
synchronized operation. Any attempt to do so will result in the termination
of the program and the issuance of an appropriate error message.
•
Synchronized operation remains active at the end of the program
(BST, RET, M02 and M30), with control reset or with jog in manual
mode if the SPS does not cancel the synchronized spindles which are
involved in synchronized operation.
•
The master spindle must be the main spindle during synchronized
operation. In synchronized operation, the functions G33, thread cut-
ting, G95 feed per revolution and G96 constant surface speed, apply
exclusively to the master spindle. For this reason, the master spindle
must be selected as the main spindle as soon as main spindle syn-
chronization is activated.
•
During synchronized operation, the user must not switch the spindles
which are involved in the main spindle synchronization from one proc-
ess to another. The use of the axis transfer commands GAX/FAX with
the spindles which are engaged in synchronized operation will cause
the program to terminate and an error message to be issued. Thus,
spindles which are part of the synchronized operation and belong to a
different primary process must be transferred to the respective proc-
ess before synchronized mode is activated, and they must not be re-
turned to the primary process until synchronized mode is canceled.
NOTE
The spindle which is engaged in tapping, G63, G63 or
G65, must not be a master spindle or a synchronized
spindle.
Cancel Synchronization