Toolholder With Orientation Capability; General - Siemens SINUMERIK 828D Function Manual

18.6

Toolholder with orientation capability

18.6.1

General

Introduction
The orientation of the tool can vary (e.g. due to retooling) for one single class of machine tools. When the
machine is operating, the orientation that has been set is permanent, however, and cannot be changed during
traversing. For this reason, kinematic orientation transformation (3-, 4- or 5­axis transformations, TRAORI) is
neither necessary nor does it make sense for such machines. However, it is necessary to take account of the
changes in the tool length components caused by changing the orientation, without having to trouble the user
with mathematics involved. The control performs these calculations.
Availability
For SINUMERIK 828D, the "toolholder with orientation capability" function is only available for the milling
versions.
Required data
The following requirements must be met if the control is to take tool compensations into account for toolholders
with orientation capability:
• Tool data (geometry, wear, etc.)
• Toolholder data (data for the geometry of the toolholder with orientation capability)
Toolholder selection
A toolholder defined in the control must be specified for the "Toolholder with orientation capability" function. The
NC program command below is used for this purpose:
TCARR = m
m: Number of the toolholder
The toolholder has an associated toolholder data block, which describes its geometry.
Activating the toolholder and its block has an immediate effect, i.e. from the next traversing block onwards.
Assignment tool/toolholder
The tool that was active previously is assigned to the new toolholder.
From the point of view of the control, toolholder number m and tool numbers T can be combined freely. In the real
application, however, certain combinations can be ruled out for machining or mechanical reasons. The control
does not check whether the combinations make sense.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
18.6 Toolholder with orientation capability
W1: Tool offset
1497