196 8 Milling and Drilling
8.2 Additional Milling Functions
The percentage must be 50% or less. This is required to make sure
that all material is removed.
The pocket is machined at the feed rate programmed in the custom
pocket step. When the tool makes a cut greater than the step over,
the full cut override is applied to the feed. Depending on the
complexity of the pocket, the tool will change feed as needed. The
full cut override only applies to the rough pass. Bottom and side
finish passes run entirely at the programmed finish feed.
The Z step size is determined by the system and will not exceed the
specified distance or number of passes.
The tool retracts to the active datum's retract position between Z
passes.
A finish allowance is optional but recommended. If specified, this
amount is left on the bottom and sides of the pocket and islands to
be removed on the finish pass.
When the finish feed is 0, the finish pass will be skipped. The tool
retracts to the active datum's retract height and the specified
"staging" position between rough, bottom finish, and side finish
operations.
A Custom Pocket will include all Islands that are within the
custom pocket reguardless of which step has been
selected when the GO key is pressed.
When a finish cut is specified on a 2 axis system, the
finish applies only to the side. The system runs a rough
pass at programmed depth followed by a separate side
finish pass. For additional control over rough, bottom and
side finish operations, use the advanced custom pocket
cycles described in the next section.
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