1. Characteristics of CNC tools

   In order to achieve the purpose of high efficiency, versatility, quick change and economy of tools on CNC machine tools, the tools used on CNC machine tools must have the following characteristics;

(1) CNC tools must have high cutting efficiency

(2) CNC tools must have high precision and repeatability of positioning

(3) The tool is required to have high reliability and durability

(4) Pre-adjustment of tool size and quick tool change

(5) Have a relatively complete tool system

(6) Establish a tool management system

(7) There should be tool online monitoring and size compensation system

2. Performance requirements of CNC tools

   In order to meet the requirements of high machining accuracy, high machining efficiency, concentrated machining procedures and fewer clamping times of CNC machine tools, CNC machine tools have many performance requirements for the tools used:

(1) Standardization of inserts, tool geometric parameters and cutting parameters;

(2) The selection principle of blade or tool material and the matching between cutting parameters and the material of the workpiece to be machined;

(3) Rationalization of the durability of the blade or tool and its economic life index;

(4) Optimization of the positioning datum of the blade or shank;

(5) Requirements for the relative position of the blade and the tool holder to the machine tool spindle;

(6) Requirements for the strength, rigidity and wear resistance of the handle;

(7) Requirements for the indexing, assembly and disassembly and repeatability of the tool holder;

(8) Requirements for the cutting position and direction of the blade and the handle;

(9) Generalization, regularization and serialization of blade and handle height.