38 Degree Double Variable Helix – Primarily for materials such as Stainless Steel & Titanium.
Dia: -0.000" to -0.002"
Shank Dia: +0.000" to -0.0003"
Raptor 3/6 DVH - This group of tools evolved from our Raptor DVH end mills designed for high temperature alloy machining in materials such as Stainless Steel & Titanium. As you know, these softer gummy materials are often considered "difficult to machine" because of material buildup and and thermal expansion rates (material memory). We designed this for getting superior finishes in those materials.
The DVH, Double Variable Helix, design is unique to Destiny Tool.
Single Variable Helix
A typical variable helix end mill consists of unequal flute spacing at various points along the cutting edge of the tool. The unequal flute spacing dampens vibration that is generated by the milling process.
This vibration dampening permits faster feed rates and improved surface finishes when properly applied. Our tools do that, but then we take an additional step...
Double Variable Helix
To further dampen the vibration, and dramatically reduce the harmonics that cause chatter in the workpiece, Destiny's DVH end mills have taken the next step in the design: EACH INDIVIDUAL FLUTE has a helix that varies!
As a result, our unique designs in both our Raptor DVH and our Raptor DVH 3/6 not only provide exceptional material removal rates and chip evacuation but most of the heat is removed with the chip!
We induce less heat in the base material which translates into better finish, faster part production AND longer tool life "in-the-cut". And, of course, we break up the harmonics so you have superior finishes even in your 'roughing' operations!
Single Variable Helix vs Double Variable Helix
What make the 3/6 different form the DVH?
It's the applications! The 3/6 is designed for profiling but not for slotting. It's a profiling / finishing end mill!
The Trailing Edge of the 3/6
Similar to a double edge razor blade, the first flute edge takes the heaviest cut followed by a lighter chip load cut with the trailing edge. This variation in chip load leas to a superior finish in profiling applications. It's a VERY UNIQUE TOOL!!!