HEIDENHAIN TNC 620, User Manual

Page: 296 / 521

Testing and running | Running CAM programs
6
Possibilities for intervention on the control
Cycle
32 TOLERANCE
is available for influencing the behavior of
CAM programs directly on the control. Please note the information
describing the functioning of Cycle
32
. Also note the interactions
with the chord error defined in the CAM system.
Further information: User's Manual for Programming of Machining
Cycles
Refer to your machine manual.
Some machine tool builders provide an additional
cycle for adapting the behavior of the machine to
the respective machining operation (e.g., Cycle
332
Tuning). Cycle
332
can be used to modify filter settings,
acceleration settings, and jerk settings.
Example
34 CYCL DEF 32.0 TOLERANCE
35 CYCL DEF 32.1 T0.05
36 CYCL DEF 32.2 HSC MODE:1 TA3
ADP motion control
This function must be enabled and adapted by the
machine manufacturer.
An insufficient quality of data in NC programs created on CAM
systems frequently causes inferior surface quality of the milled
workpieces. The
ADP
(Advanced Dynamic Prediction) feature
expands the conventional look-ahead of the permissible maximum
feed rate profile and optimizes the motion control of the feed axes
during milling. This enables clean surfaces with short machining
times to be cut, even with a strongly fluctuating distribution of points
in adjacent tool paths. This significantly reduces or eliminates the
reworking complexity.
These are the most important benefits of ADP:
Symmetrical feed-rate behavior on forward and backward paths
with bidirectional milling
Uniform feed rate curves with adjacent cutter paths
Improved reaction to negative effects (e.g. short, step-like
contours, coarse chord tolerances, heavily rounded block end-
point coordinates) in NC programs generated by CAM systems
Precise compliance to dynamic characteristics even in difficult
conditions
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HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022