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Lead In and Lead Out Motions

When you create profile milling sequences, you can use a
number of parameters to control lead in and lead out motions.
• CUTCOM
Lead In and Lead Out Motion Parameters
• CUT_ENTRY_EXT
• CUT_EXIT_EXT
• LEAD_RADIUS
• TANGENT_LEAD_STEP
• NORMAL_LEAD_STEP
• OVERTRAVEL_DISTANCE
• APPROACH/EXIT
– APPROACH_DISTANCE
– EXIT_DISTANCE

Lead In and Lead Out Motions 1
Figure 1 – Lead In and Lead Out Tool Motion
Lead In and Lead Out Motion Parameters
When you create profile milling sequences, you can use a number of
parameters to control lead in and lead out motions.
• CUTCOM – Turns cutter compensation on or off in the CL data file. When
configuring a workcell, you can specify whether the cutter compensation
is toward the tool center (default) or tool edge.
• CUT_ENTRY_EXT/CUT_EXIT_EXT – Set to LEAD_IN/LEAD_OUT, tool
enters and exits the workpiece along a tangent arc.
• LEAD_RADIUS – Radius value of the tangent circle move for lead in or
lead out.
• TANGENT_LEAD_STEP – Linear distance of the tangent section of a lead
in or lead out motion.
• NORMAL_LEAD_STEP – Linear distance of the normal section of a lead
in or lead out motion.
• OVERTRAVEL_DISTANCE – For profile milling. The distance the tool
travels past the start of a profile pass.
• APPROACH/EXIT – For profile milling, this is an optional element. It
enables creation of approach and exit moves. You can use these as an
alternative to lead in and lead out motions.
– APPROACH_DISTANCE – You can use this parameter when creating
cut motions or using the approach/exit option. The distance of an
approach move for a tangent or normal approach.
– EXIT_DISTANCE – You can use this parameter when creating cut
motions or using build cut. The distance of an exit move for a tangent
or normal exit.

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