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Home » Iscar's Chatterfree End Mills Bring Longer Tool Life

Iscar's Chatterfree End Mills Bring Longer Tool Life

July 20, 2011

With a new level of built-in asymmetry, Iscar EC-H Chatterfree solid carbide endmills bring a new level of speed and process security to slotting and shoulder milling of ferrous metals. On alloy and stainless steel, users report 20-25 percent longer tool life than with ordinary variable-pitch endmills. Familiar variable-pitch flutes have proven out for years for their vibration-dampening characteristics in solid carbide endmills.Now Iscar has gone one step better by varying the helixes as well.  Two flutes have a 35 degree helix angle and the other two ascend at 37 degrees. Iscar's theory is that the more asymmetry they design into a solid carbide tool, the greater its resistance to harmonic vibration and chatter.

The variable helix adds one extra dampening influence against harmonic vibrations, a principal cause of tool fracture in hard but brittle solid carbide endmills.  By the same mechanism it also further minimizes chatter marks in the workpiece. EC-H Chatterfree endmills are available in the diameter range of 6-25 mm, with either Weldon (relieved) or cylindrical (straight) shanks. All have corner radii and are made of IC900, the most versatile PVD coated grade available today.

 

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