They are capable of working at higher cutting parameters because they are strong. Any tool to be strong in operations needs to have very less positive rake. But when we design a tool with least positive rake it consumes more power and leads to vibrations sometimes. So to make a tools which consumes low power, does not lead to vibrations and still it needs to be strong, then we need to balance on rake angle.
In endmills the helix generates the rake angle. Hence helix plays a very important role. Hence the helix is designed in such a way that it works smooth and offers high strength to a tool. When we design a tool with high helix, we need to sacrifice on its strength. This is the reason a variable helix comes into the picture. These endmills enhances the performance and work on very difficult to machine materials. The Super Viper design is the next generation Viper Endmills. Unequal flute spacing results into non resonance zone which gives no chatter at all. The finish is exceptionally better.
Contact: cobra@cobracarbide.com
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