Page 45 - Parlec Catalog
P. 45
ER Toolholders
High Precision Toolholding Solutions 43
Effects of Runout on the Cutting Edges
Flute 1 Flute 2 Flute 3
High runout flute takes a Middle runout flute performs as Low runout flute does not take
heavier than planned cut requiring planned. enough chip to dissipate heat and
slowing of planned feed. wears prematurely.
Technical Features
Standard DIN style nuts can restrict the uniform contact of
the top angle of the collet creating uneven clamping. This
will create runout in addition to the normal result of the
collet seat and collet. Nuts with friction races are designed
to increase grip force and decrease angular deflection. Use
Collet Chucks with the Parlec Power Nut for best results.
Other AA Collet Design Features and Benefits
12 slots instead of 16 allows for more than enough collapse and
increase in the area of contact with less tendency to distort.
All edges are deburred and rounded to promote good interface
with the taper of the chuck without the tendency to damage it. This
results in more consistent repeatability of the system.
Collets are polished to eliminate minor blemishes that tend to
promote corrosion. Better corrosion resistance will result in longer
product life of both the collet and the holder.
Highly polished OD surfaces reduce the amount of force absorbed
by friction between the collet and the collet chuck seat, increasing
the grip force on the cutting tool. The inside bore of the collet is
intentionally left unpolished to increase the friction between the
collet and the cutting tool shank.
The result of an improved AA collet in a quality chuck is increased
gripping force, improved rigidity, decreased runout and an overall
satisfaction in your collet chuck system.
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