Colletless IDCT Spindle |
Collet Style Spindle |
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| The IDCT spindle does not use
collets to hold the drill bit during operation. The drill bit is held
directly by the wheel drive mechanism, resulting in virtually unmeasurable
runout. |
Traditional collet type
spindles start with the runout of the drill itself, then add the runout of
the collet and the spindle itself into the runout total. |
 |
|
| Drill
runout |
Drill
runout |
| |
|
|
 |
| Drill
runout |
Drill
runout plus collet runout |
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|
|
 |
| Drill
runout |
Drill
runout plus collet runout plus spindle runout |
| |
|
What impact
does this have on your process?
-
Runout produces side loading which can overheat
the drill and cause premature breakdown of the drill structure. Hole
quality degrades quickly as the cutting edges decay.
-
The drill can pilot in off center, resulting in
straying hole centers and drill breakage, increasing your chances of
process scrap.
-
Hit counts of 1000-1500 hits are traditionally used
for many small drills to prevent poor hole quality or breakage. These
same drills can be used for 2000, 4000, even 8000 hits or more in the
IDCT spindle producing excellent hole quality and extremely low
occurances of breakage. (see Drill Life)
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