Cylinder Surface Transformation Tracyl - Siemens SINUMERIK 840DE sl Function Manual

Importing the rotary axis offset from the work offset upon selection of the transformation:
● 0 = Axial offset of the rotary axis is not taken into account.
● 1 = axial offset of the rotary axis is taken into account.
● 2 = Axial offset of the rotary axis is taken into account up to the SZS. SZS is the settable zero
system. The SZS frames contain transformed rotations around the rotary axis.
Definition of the last element in the kinematic chain
$NT_CNTRL Bit 19 is used to define that the last element of the kinematic chain is a rotary axis
or a constant rotation. The direction vector of the rotary axis defines the Z direction of the tool
coordinate system. If the system variable $NK_A_OFF of this chain element contains a value
not equal to zero, the tool coordinate system is also rotated about the coordinate axis with this
angle.
If $NT_CNTRL Bit 20 is also defined, the sign of the Z direction of the axis for the determination
of the WCS is inverted.
Example program for TRANSMIT
You will find a simple part program using TRANSMIT under Part program for TRANSMIT
(Page 332).
4.1.5

Cylinder surface transformation TRACYL

In this chapter, a description is provided as to how cylinder surface transformations (TRACYL)
are mapped using a kinematic chain and parameterized in the control system using system
variables.
The system variables are retentively saved in the NC and can be archived and/or read as "NC
data" via SINUMERIK Operate using the commissioning archive.
The machine kinematics are defined using two kinematic chains, see Definition of kinematic
transformations (Page 256).
The following graphic shows an example of a cylinder surface transformation:
Transformations
Function Manual, 06/2019, A5E47435470B AA
K12 transformation definitions with kinematic chains
4.1 Function description
265