Общий каталог Widia 2017 - страница 551

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Internal Groove Depth versus Bar Interference

minimum bore diameter at maximum groove depth

maximum groove depth

NOTE: Internal grooving depth limits are a function of bar clearance versus bore diameters.

Machining Guidelines for Back Turning/Turning/Profi ling

The NP-K-style TopGroove inserts were engineered specifi cally for back turning on small automatic lathes, but they also fi nd applications for other light turning and profi ling operations. For general applications, maximum depth of cut should not exceed 2,74mm for size 2 inserts or 3,84mm for size 3 inserts.

Machining Guidelines for Using TopGroove Deep Grooving Inserts (NGD)

Typically, those NGD- and NRD-style inserts with twoadd to Cadd to F
cutting edges require no machine offset changes.dimensiondimension
insert
However, those inserts with only one cutting edgecatalogue numbermmmm
do require offset changes. Refer to the chart here
to ensure proper offset adjustments.NGD-30620,000,00
NGD-30942,542,54
NGD-31252,542,54
NGD-31892,542,54
NGD-41250,000,00
NGD-41893,183,18
NGD-42506,356,35
NRD-30310,000,00
NRD-30622,542,54
NRD-40620,000,00
NRD-40946,356,35
NRD-41256,356,35

TopGroove Insert Selection Guide

  • All TopGroove inserts are precision ground to provide accurate edge location and secure locking of the insert in the toolholder pocket.
  • TopGroove inserts can be used in either toolholders or boring bars.
  • Right-hand TopGroove toolholders use right-hand inserts. Left-hand TopGroove toolholders use left-hand inserts.
  • Right-hand TopGroove boring bars use left-hand inserts. Left-hand TopGroove boring bars use right-hand inserts.

left-hand insert right-hand insert