Page 208 - Parlec Catalog
P. 208
Features and Benefits
206 Selection Guide
BORING FEATURES
BRING BENEFITS!
SMALL DIAMETER BORING SYSTEMS
Boring bar receiver telescopes to minimize overhang.
Balanced Modular Boring Bars and Noses available as
standard combined with the balanceable head for extreme
high velocity boring.
.001” .02 mm
A .0001” (.002 mm)
Vernier is standard on all
.0001” .002 mm finish heads eliminating
the need to purchase
expensive heads
PRECISION FINISH BORING SYSTEMS Back Bore Diameter
Overhang
Extended length insert holders al-
low expansion of the boring range
Rigidity
PC Diameter
Created by Force - The face to face clamping forces are equal Through Bore Diameter
to the axial force Fa. Precision .0002" on Diameter.
Orientation - The cross pin orientates the PC screw and
transmits extreme forces.
Self Tightening THE PC CONNECTION
The torsional cutting forces are primarily transmitted by the Ft
friction between the matching faces. Fa' Fa'
Fa'
Any remaining torque will result in an additional wedge
action between the locking screw and inner member. Fr' Fa2
Due to very small resulting wedge angle, any increased Fa'
torsional force (Ff) will be transformed into very strong axial
clamping force (Fa2)
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