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Understanding Turning Material Removal

A material removal feature can be generated following each NC
step. The purpose of this feature is to reshape the workpiece so
the part looks just as it will during the actual machining process
at the completion of that NC step.

Understanding Turning Material Removal 1
Figure 1 – Model without a Material
Removal Feature
Material Removal

Understanding Turning Material Removal 2
Figure 2 – Model with a Material
Removal Feature
A material removal feature can be generated following each NC step. The
purpose of this feature is to reshape the workpiece so the part looks just as it
will during the actual machining process at the completion of that NC step.
There are two types of material removal features.
• Automatic
• Construct
The easiest method to create material removal features is to create them
automatically, where the system creates it based on the information it has.
Sometimes the system does not have sufficient information. The system
then provides the option of manually constructing a material removal feature
(except for Thread steps). The means for constructing a manual material
removal feature are identical to those for creating other sketched features.
If the system does not enable you to create the manual material
removal feature, it means an incomplete automatic material removal
feature has been created and this has to be deleted.
When the cut geometry for Area and Groove turning has been defined by
sketching, the system enables you to create the material removal feature
automatically. Since Area and Groove cut geometries are determined by the
workpiece boundaries, it is recommended that a material removal feature be
created following each NC step to avoid air machining in later steps.

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