1. There are many ways to classify CNC tools:
According to the tool structure, it can be divided into
(1) Integral;
(2) Mosaic type, which adopts welding or machine-clamp connection, and the machine-clamp type can be divided into two types: non-indexable and indexable;
(3) Special types, such as compound knives, shock-absorbing knives, etc.

According to the material used to manufacture the tool, it can be divided into:
(1) High-speed steel cutting tools;
(2) Carbide cutting tools;
(3) Diamond tools;
(4) Other material tools, such as cubic boron nitride tools, ceramic tools, etc. >>Detailed introduction of turning tool material

From the cutting process, it can be divided into:
(1) Turning tools, including external circles, internal holes, threads, cutting tools, etc.;
(2) Drilling tools, including drills, reamers, taps, etc.;
(3) Boring tools;
(4) Milling tools, etc.

In order to meet the requirements of CNC machine tools for tools that are durable, stable, easy to adjust, and replaceable, machine-clamped indexable tools have been widely used in recent years, reaching 30% to 40% of the entire CNC tools. The amount accounts for 80% to 90% of the total.

2. Compared with the tools used on ordinary machine tools, CNC tools have many different requirements, mainly including the following characteristics:
(1) Good rigidity (especially roughing tools), high precision, small vibration resistance and thermal deformation; good interchangeability, easy to quickly change tools;
(2) Long service life, stable and reliable cutting performance;
(3) The size of the tool is easy to adjust to reduce the tool change adjustment time;
(4) The tool should be able to break chips or roll chips reliably to facilitate the removal of chips;
(5) Serialization standardization to facilitate programming and tool management.