Diamond Back End Mill Max's Out The Workpiece

This test was performed at the Technical-Industrial Lab at Washtenaw Community College.

"Testing the capabilities of a 3 flute Diamondback serrated rougher endmill from Destiny Tool. This is our second test with the endmill and we have NOT YET MAXIMIZED THE TOOL NOR THE MACHINE. Instead we appear to have maxed out the workpiece...it started flexing like crazy once the bulk of the material had been removed removed (the base is only 0.175" thick).

We also made some features using other Destiny endmills, all 3 flute Viper stealth coated DVH. The stubby endmills could probably take a larger cut but the programmer didn't want to break them just to find out.

The machine is a 15 horsepower [sticker] Haas VF-2. We cannot push the machine any faster with this roughing setup, so we have to instead take bigger and bigger cuts in order to ping it. This workpiece's load never exceeded 40% except for the breakthroughs. How much faster will this tool go?
Our previous tests were with a 2 flute version of the same endmill, at similar speeds, but using a higher chipload. We are wondering if the 3 flute version needs more room to evacuate a giant 0.015" loaded chip....?"

Washtenaw Community College (WCC) offers classes in machining, CNC operation and programming, robotics, PLCs, factory automation, fluid power systems, welding, CAD, rapid prototyping, and much more. Our industrial tech facility is one of the most advanced in the region, with professional instructors and well over 2 million dollars of modern industrial equipment. Our highly hands-on approach produces some of the most sought-after graduates in the region. Check our course listings and see what we can offer you! www.wccnet.edu

Contact our Department Chair Gary Schultz for more information: gschultz@wccnet.edu