Classification of carbide cutting tools

1. Carbide-cutting tools can be divided into five categories according to the form of the workpiece surface.


Carbide tool classification


1) Tools for processing various outer surfaces


Including turning tools, planers, milling cutters, external surface broaches and files, etc.


2) Hole processing tool


Including drills, reamers, boring tools, reamers and inner surface broaches, etc.


3) Thread processing tools


Including taps, dies, automatic opening and closing thread cutting heads, thread turning tools and thread milling cutters, etc.


4) Gear machining tools


Including hobs, gear shaping cutters, gear shaving cutters, bevel gear processing cutters, etc.


5) Cutting tool


Including serrated circular saw blades, band saws, bow saws, cut-off turning tools, saw blade milling cutters and more. In addition, there are combination knives.


2. According to the cutting motion mode and the corresponding blade shape, the cutting tools can be divided into three categories.


1) General tool


Such as turning tools, planing cutters, milling cutters (excluding formed turning tools, formed planing cutters and formed milling cutters), boring cutters, drills, reamers, reamers and saws, etc.


2) Forming tool


The cutting edge of this type of tool has the same or nearly the same shape as the section of the workpiece to be processed, such as forming turning tools, forming planers, forming milling cutters, broaches, conical reamers and various thread processing tools.


3) Developing tools


The gear tooth surface or similar workpieces are processed by the generation method, such as hobs, gear shaping cutters, gear shaving cutters, bevel gear planers and bevel gear milling cutter discs, etc.

The structure of various tools is composed of a clamping part and a working part. The clamping part and the working part of the overall structure tool are made on the cutter body; the working part (cutter teeth or blade) of the insert structure tool is mounted on the cutter body.

There are two types of clamping parts with holes and handles. The tool with a hole is set on the main shaft or mandrel of the machine tool by means of the inner hole, and the torsional moment is transmitted by means of an axial key or an end face key, such as a cylindrical milling cutter, a shell face milling cutter, etc.

Shank knives usually have three types: rectangular shank, cylindrical shank and conical shank. Turning tools, planning tools, etc. are generally rectangular shanks; conical shanks bear axial thrust by a taper, and transmit torque with the help of friction; cylindrical shanks are generally suitable for smaller twist drills, end mills and other tools. The resulting frictional force transmits the torque. The shank of many shank knives is made of low alloy steel, and the working part is made of high-speed steel butt welding the two parts.


The working part of the carbide tool


The working part of the tool is the part that generates and processes chips, including structural elements such as the blade, the structure that breaks or rolls up chips, the space for chip removal or chip storage, and the passage of cutting fluid.

The working part of some tools is the cutting part, such as turning tools, planers, boring tools and milling cutters; the working part of some tools includes cutting parts and calibration parts, such as drills, reamers, reamers, internal surface pull Knives and taps etc. The function of the cutting part is to remove chips with the blade, and the function of the calibration part is to smooth the machined surface and guide the tool.

The structure of the working part of the tool has three types: integral type, welding type and mechanical clamping type. The overall structure is to make a cutting edge on the cutter body; the welding structure is to braze the blade to the steel cutter body; there are two mechanical clamping structures, one is to clamp the blade on the cutter body, and the other is It is to clamp the brazed cutter head on the cutter body. Cemented carbide tools are generally made of welded structures or mechanical clamping structures; porcelain tools are all mechanical clamping structures.

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