HEIDENHAIN iTNC 530 (340 49x-03) smarT.NC Pilot - Manual (Page 87)

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fining Machining O
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Unit 22 Fine Roughing
With the fine roughing unit you can use a smaller tool to rework a contour
pocket that has been roughed-out with unit 122. In this step, smarT.NC
machines only the places the previous tool did not reach.
Parameters on the overview form:
8 T: Tool number or name (switchable via soft key)
8 S: Spindle speed [rpm] or cutting speed [m/min or ipm]
8 F: Feed rate for plunging [mm/min], FU [mm/rev] or FZ [mm/tooth]
8 F: Feed rate for plunging [mm/min] or FU [mm/rev] or FZ [mm/tooth]
8 Coarse roughing tool: Number or name of the tool (switchable via
soft key) with which you have coarse-roughed the contour.
8 Plunging depth: Infeed per cut.