Coupled Motion (Trailon, Trailof) - Siemens SINUMERIK 808D User Manual

● It is possible to change OFFN within a part program. This could be used to shift the groove center line from the center
(see diagram).
● Guiding grooves:
TRACYL does not create the same groove for guiding grooves as it would be with a tool with the diameter producing the
width of the groove. It is basically not possible to create the same groove side geometry with a smaller cylindrical tool as
it is with a larger one. TRACYL minimizes the error. To avoid problems of accuracy, the tool radius should only be slightly
smaller than half the groove width.
N o te
OFFN and TRC
With TRAFO_TYPE_n = 512, the value is effective under OFFN as an allowance for TRC. With TRAFO_TYPE_n = 513, half
the groove width is programmed in OFFN. The contour is retracted with OFFN-TRC.
11.19

Coupled motion (TRAILON, TRAILOF)

Fu n ctionality
When a defined leading axis is moved, the coupled-motion axes assigned to it traverse through the distances described by
the leading axis, allowing for a coupling factor.
Together, the leading axis and all the coupled-motion axes assigned to it form a coupled axis group.
A coupled axis group can consist of any desired combinations of linear and rotary axes. A spindle, however, can form a
coupled axis group with a spindle only. A simulated axis can also be defined as a leading axis.
Ap plication examples
● Traversal of an axis by means of a simulated axis. The leading axis is a simulated axis and the coupled-motion axis a
real axis. In this way, the real axis can be traversed as a function of the coupling factor.
● Two-sided machining with a coupled axis group: leading axis Z, coupled-motion axis W.
Programming
TRAILON(<coupled-motion axis>,<leading axis>,<coupling factor>)
TRAILOF(<coupled-motion axis>,<leading axis>)
TRAILOF(<coupled-motion axis>)
Me aning
TRAILON
<coupled-motion axis>
<leading axis>
150
Command for activating and defining a coupled axis group
Effectiveness: modal
Parameter 1: Axis name of the coupled-motion axis
N o te:
A coupled-motion axis can neither be assigned simultaneously to over one leading axis,
nor act as the leading axis for other coupled-motion axes.
Parameter 2: Axis name of the leading axis
Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA6, 09/2017