1, according to use classification, planing tool can be divided into flat planer knives, knife, knife, bend plane cutter groove, planer knives for machining inner hole bend forming cutter and etc

( 1) Flat cutter: used for coarse and fine plane level. ( 2) Partial knife: used for processing at an Angle of the plane, inclined plane and vertical plane. ( 3) Knife: for cutting, cutting, plane surface steps. ( 4) Bend plane slot knife: used for processing t-slot, side slot, etc. ( 5) Inner hole Angle cutter: used for machining inner hole surface, such as the keyway. ( 6) Forming cutter: used for machining surface of special shape, the shape of the cutter for cutting edge and workpiece surface, forming at a time. 2, according to the structure classification, planing tool can be divided into integral cutter, welding type cutter and fabricated planing tool. ( 1) Monolithic cutter: monolithic cutter tool rod and made of the same material of the cutting tools, medium and small sizes of cutter are integral. ( 2) Welded cutter: welded cutter for cutting head and tool rod composed of two kinds of materials, welding, cutting head is commonly carbide insert. ( 3) Prefabricated planing tool: the large size of cutter for many fabricated. Cutting head and the cutter bar for different materials, with clamp and bolt head fastened on the tool holder. 4, the planer knives for machining precision can be divided into coarse and fine cutter. 5, according to the direction of feed can be divided into left cutter and right cutter.