1. Basic Knowledge of CNC Cutting Tool
Commonly Used Material of CNC Tools
Materials CNC tool is broadly divided into the following categories: high-speed steel, carbide,
cermet, ceramic, polycrystalline cubic boron nitride, and polycrystalline diamond. Here mainly
mention the ceramic, the time of the use of ceramics for the cutting tool is earlier than
carbide, but due to their brittleness, the development is very slow. But since the 1970s, it still
gets a relatively fast development. There are two major lines in the ceramic tool materials,
namely alumina-based and silicon nitride department. Ceramics, as a cutting tool, have the
advantages of low cost, high hardness, high temperature performance and a good prospect.
Category of CNC Cutting Tool
According to cutting exercise and the blade shape, CNC cutting tool can be divided into three
categories. The general-purpose tool, such as turning tools, planer, milling cutters (excluding
forming lathe tool, shaping the planer and forming cutter), boring tools, drill bits, reamers,
reamers and saws, etc.; the forming tool, this type of tool blade has the same or nearly the
same shape with the workpiece cross section, such as forming turning tools, molding planer,
shaping cutters, broaches, tapered reamer and threaded processing tool; The generating tool
is to use the generating method to process gear tooth surface or similar artifacts, such as
hobs, shaper cutters, gear shaving cutters, bevel gear planer and bevel gear milling cutter.
Cutting tools, if classified in the form of the workpiece surface, can be divided into five
categories. Cutting tools used to process a variety of the outer surface are including turning
tools, planer, milling, outer surface pull knife and rasp; hole-making tools, including drills,
reamers, boring tool, reamer and the inner surface of the broach; the thread processing tools,
including taps, dies, thread cutting head automatically opening and closing, thread turning
and thread milling cutters, etc.; and the gear cutting tools, including hobs, shaper knife,
shaving cutter, bevel gear processing tool; the cutting tool, including inserts tooth circular
saw blades, band saw, bow saw, cut off lathe tool and blade cutter.

2. Alloy End Mills
The carbide end mills are the milling cutter made with carbide material. If you want to learn
carbide cutters then you need to know what the cemented carbide is. Cemented carbide is
based on the high hardness micron level refractory metal carbide (WC, TiC) powder as a
main component, and powder metallurgy products uses cobalt (Co) or nickel (Ni),
molybdenum (Mo) as a binder, fired in a vacuum oven or hydrogen reduction furnace.
Carbide cutter is mainly divided into: solid carbide tools, carbide straight shank slot cutters,
carbide blade cutter, carbide spiral drill cutter, carbide machine reamer cutter, carbide end
mill and carbide ball end mill.
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