HEIDENHAIN iTNC 530 (340 49x-02) Pilot - Manual (Page 58)

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Additional parameters on the drilling parameters detail form:
8 Depth at front: Depth for sinking at front.
8 Offset at front: Distance by which the TNC moves the tool center
out of the hole during countersinking at front.
Globally effective parameters on the global data detail form:
8 Set-up clearance
8 2nd set-up clearance
8 Positioning feed rate
8 Feed rate for traversing between machining positions
8 Climb milling, or
8 Up-cut milling