Each Niagara Cutter RFCB443 TiAlN-coated cobalt steel truncated chipbreaker rougher-finisher end mill in this six-piece set has four flutes and a non-center-cutting design, and removes material such as mild and cold-rolled steels in less time than conventional end mills while producing a finer finish than fine- or coarse-pitch roughers. The six-piece set includes one each of these cutting diameters: 3/16”, 1/4", 5/16”, 3/8”, 1/2", and 5/8”.
Truncated rougher-finisher end mills are special-purpose tools whose chip-breaking cutting edges create small chips for heavy cuts and remove more material in less time than conventional end mills. They produce a finer finish than fine- or coarse-pitch roughers, reducing the need for a second finishing cut in some applications. The TiAlN coating resists heat better than TiN and TiCN coatings, increasing tool life and performance. It also offers increased hardness for abrasion resistance and may reduce the need for lubricants based on the application. The chipbreaker tooth design makes end mills with this coating best suited for machining mild and cold-rolled steels. The cobalt steel substrate can be run at faster speeds and stays sharp longer than high-speed steel tools, while offering resistance to heat and abrasion.
Each end mill has four flutes to optimize the feed and cut rate. The 30-degree helix angle balances lower angles’ strong cutting edge for difficult-to-machine materials with higher angles’ increased cutting action. The tool’s square end creates sharp, unrounded cuts and has a corner chamfer on the cutting edges to provide more strength than standard square end tools in applications where cutting forces are high. The non-center-cutting design is for applications such as peripheral milling and finishing. Cutting diameter tolerance is +0.001” to -0.000". Each end mill has a Weldon shank.
End mills are designed to remove material and create multi-dimensional shapes and profiles. They have cutting edges along the outside diameter and flutes that remove chips from the cutting area and allow cooling fluids to enter. If heat is not reduced effectively, the tool’s cutting edges will dull and additional material buildup can occur. The number of flutes can range from two to eight. Two-flute designs offer the most efficient chip removal, but more flutes provide a smoother finish. The shank is the end of the tool held in place by a tool holder or machine. Center-cutting end mills can create three-dimensional shapes and profiles, and make plunge cuts similar to a drill bit. Non-center-cutting end mills are for applications such as peripheral milling and finishing, but cannot make plunge cuts.
Niagara Cutter has been designing and manufacturing precision cutting tools since 1954. Specializing in end mills, cutting mills, and saws, the company is based in New York and manufactures its tools at facilities in Pennsylvania and Massachusetts. This allows the company control over production, from substrate to coating, which is essential for customers in a variety of industries, especially aerospace and automotive.
.../ Niagara Cutter RFCB443 Cobalt Steel End Mill Set, Chipbreak Roughing Finishing, TiAlN Coated, 4 Flutes, 6-piece / Steel Tool
