Page 280 - Iscar

USER GUIDE
PLUNGING CUTTERS

When plunging starts from a pre-drilled hole, Sketch 5
the initial diameter of the hole Di should be Di > Dt
larger than the plunger diameter Dt. Dt Di

Note: After each axial plunge stroke, move 45º from the horizontal, a ae max = 11 mm
distance of at least 0.5 mm. Only after this move can you move up and
away for a rapid exit.
See Sketch 6.
Sketch 6

The PLH...- type (trepanning) plungers have a 0.5 mm min
hollow center. This requires a specific pattern
so the column that remains after each plunge
is removed completely and smoothly.

The coordinates in Table 1 produce
the pattern shown in Sketch 7.
This provides the optimal results for the PLH 45 ϒ
D75-27-13 type plunger (outer diameter of
75 mm, inner diameter of 24 mm).

Sketch 7

C
C C
F H F

B B B

Y Y E Y E

X X X
A A A G

D
D

Table 1
Hole X Y
A 0.0000 0.0000
B 0.0000 43.300
C 0.0000 86.601
D 37.125 -21.650
E 37.125 21.650
F 37.125 64.951
G 24.750 0.0000
H 12.375 64.951

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