SGS Tool Co.’s patented Z-Carb-AP Variable Rake End Mill offers what the company claims is superior chatter suppression. With most end mills, the cutting teeth enter and exit the material creating a natural rhythm that results in damaging harmonics. The harmonics produce a frequency that resonates through the entire tool, resulting in one of the most damaging forms of cutter wear known as chatter. The Z-Carb-AP, with its patented geometry, offers three stages of chatter suppression resulting in the quietest, most stable milling experience available.
In Stage One, unequal flute spacing helps to disrupt the rhythmic pattern created by the cutting edge of typical end mills, which helps to suppress the development of damaging harmonics. In Stage Two, the patented unequal helix design aids in eliminating the damaging harmonics that occur during typical machining by changing the angle at which each cutting edge enters and exits the material during the milling process. In Stage Three, the rake angle determines the size and shape of the chip, as well as the pressure and temperature of the cutting zone. By incorporating the SGS Patented Variable Rake Geometry, the Z-Carb-AP can alter and control the cutting dynamic like no other tool available, claims SGS, which takes chatter suppression to a whole new level of advanced productivity.
Testing has shown that the three stages of chatter suppression result in a tool that produces up to 75 per cent less sound and a surface finish that is up to 321 per cent smoother than competitive products. It also offers enhanced corner geometry with a tighter tolerance corner radius for more accurate machining and geometry that offers improved shearing capabilities while producing less tool pressure. Lower cutting forces promote longer tool life, and testing has shown that after 500 inches of use, the Z-Carb-AP showed 43 per cent less edge wear over the nearest competitive product. The end mills are coated with SGS’ exclusive Ti-NAMITE-A (AlTiN) coating for increased tool life.
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