knurling tools
ACCU TRAK TOOL CORP.
PRECISION KNURLING TOOLS
(800) 433-4933
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Convex Knurls (for Axial Feeding)



Inch
EPV Series - - 1/2 x 3/16 x 3/16
GKV Series - - 5/8 x 1/4 x 1/4
KNV Series - - 3/4 x 1/4 x 1/4
KPV Series - - 3/4 x 3/8 x 1/4
PHV Series - - 1-1/4 x 1/2 x 1/2

Accu Trak's Inch Series Convex Knurls have an "extended wear" treatment and are made from Hi-Cobalt Steel


Metric
MRV Series - - 20 x 6 x 6

Accu Trak's Metric Series Convex Knurls are coated with Ferritic Nitro-carburizing (FNC) and made from High Speed Steel

 

Our Convex-Axial Feeding knurling wheels have greatly improved the ability of novice and experienced CNC lathe operators to produce quality knurled parts on their machines. All of the inch convex wheels are made from hi-cobalt steel and have an "extended wear" treatment. The unique full form radiused edges of the wheels significantly reduce the knurling forces in both the "X" and "Z" axis. As compared to using a standard knurl with a chamfer on the edges, the convex wheel is similar to a "canoe" slicing through the water as opposed to a "pram" plowing through. Also, because of the smaller surface area on first contact, these tools normally penetrate deeper into the workpiece on the first revolution which tends to reduce "double tracking" problems. The above typically results in longer tool life, better looking parts and higher productivity.

Remember that this type knurling wheel is designed only for axially feeding to produce a knurl length that is wider than the wheel being used. If the diameter of the part is less than 1/2", we would normally recommend using a straddle type two die holder. For work 3/4" and larger, a single or two die bump should be suitable.


THESE ARE THE ULTIMATE TOOLS
FOR *AXIAL FEED KNURLING

*for Knurling long patterns - feeding tools along the axis of part


TOOL IS FEEDING
AXIALLY ON PART


 

Knurling wheels with a full form convex radius on each edge produce the best finishes and increase tool life when AXIAL FEEDING as shown in the comparison below.

 



POOR: For axial Feed Knurling the Sharp Corners on the leading edge of tool see heavy loading, wear rapidly and can break off in extreme conditions.


BETTER: Beveled edge spreads out load, but now the leading edge is a blunt surface requiring higher forces on tool and holder to deform material.


BEST: Full Form CONVEX radiused edges SPREAD OUT the loading on the sharp leading edge resulting in a smoother precision finish, longer tool life and lower forces on the holder and spindle bearings.

2011 Accu Trak Tool Corp.

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