Siemens SINUMERIK 840D sl Operating Manual page 210

Simulating machining
5.1 Overview
Machine references
The simulation is implemented as workpiece simulation. This means that it is not assumed
that the zero offset has already been precisely scratched or is known.
In spite of this, unavoidable machine references are in the programming, such as for
example, the tool change point in the machine, the retraction position when swiveling and
the table components of a swivel kinematic. Depending on the actual zero offset - in the
worst case - these machine references can mean that collisions are shown in the simulation
that would not occur for a realistic zero offset - or vice versa, collisions are not shown, which
could occur for a realistic zero offset.
Programmable frames
All frames and zero offsets are taken into account in the simulation.
Note
Manually swiveled axes
Note that swivel movement in simulation and during simultaneous recording is also displayed
when the axes are swiveled manually at the start.
Simulation display
You can choose one of the following types of display:
● Material removal simulation
● Path display
Note
Thread turns not displayed
For thread and drill thread milling, the thread turns are not displayed in the simulation and for
simultaneous recording.
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During simulation or simultaneous recording you can follow stock removal from the
defined blank.
You have the option of including the display of the path. The programmed tool path is
displayed.
Note
Tool display in the simulation and for simultaneous recording
In order that workpiece simulation is also possible for tools that have either not been
measured or have been incompletely entered, certain assumptions are made regarding
the tool geometry.
For instance, the length of a miller or drill is set to a value proportional to the tool radius
so that cutting can be simulated.
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Milling