knurling tools
ACCU TRAK TOOL CORP.
PRECISION KNURLING TOOLS
(800) 433-4933
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Three Die End Rolling Holders


HEAVY DUTY COMPACT 3 DIE EXTERNAL KNURLING HOLDER


Compact design makes it ideal for use on screw machines and CNC lathes when axial feed knurling from the turret. Parts are self supported and they can extend thru the shank for long jobs. We recommend using "CONVEX" Knurls Holder can also be adapted for burnishing and internal knurling.

To Set Up: Determine Blank Diameter using Table I. Subtract the approximate knurl depth to obtain the minor diameter of the part. IN THE MACHINE set the three carrier blocks to this size or a few thousandths larger and test roll some parts. For further small adjustments move only one of the blocks. NOTE: Adjustments are made from the front of the holder. Recommended feed rate is .010 - .030" per rev. (off twice as fast) with a spindle speed of approximately 50 - 150 SFPM.


three die head

end rolling holder
 






COMPACT SELF-CENTERING 3 DIE HOLDER
with SYNCHRONIZED ADJUSTMENT

Knurl head for knurling small diameter components. Fitted with three jaws arranged at 120º which can be adjusted simultaneously by means of a synchronizing ring. This tool has a built-in mechanism that compensates any misalignment between the chuck and turret centerlines. Recommended for use on CNC, automatic, multi-spindle lathes and others.



CAM ADJUSTABLE INTERNALLY SYNCHRONIZED
3 DIE SPLINE ROLLING HEADS


Synchronized spline rolling heads are used to roll precision parts which must fit with a mating part. They are also used where the length of the part would cause excessive deflection when rolling from one side. A synchronizing mechanism is needed when more than one straight die is used to prevent mis-tracking and minimize spacing error. Mis-tracking is when rolling dies produce the wrong number of teeth (often twice as many as desired). Spacing error is when the distance from tooth to tooth varies, causing mating parts not to fit together.

The synchronizing gear aligns the teeth on each rolling die in relation to the others. When rolling the synchronizing gear is pushed back into the head. When the part is retracted, a spring returns the synchronizing gear to its original position.

The cam adjustable type allows the three dies to be adjusted with a single adjustment, making setup easier than heads with independent adjustment.


spline rolling head

CUSTOM CONFIGURATIONS -PLEASE CALL FOR INFO

508-892-1787




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