(1) high precision production quality

In order to process the surface of high-precision parts stably, more stringent requirements are put forward for the manufacturing of cutting tools (including tool parts) in terms of accuracy, surface roughness, shape and position tolerance, etc., especially for indexable tools. In order to ensure the repeated accuracy of the blade tip (cutting edge) after the rotation, the dimension and precision of the key parts such as the cutter body, the cutter groove and the positioning parts are required The degree and surface roughness must be strictly guaranteed. Together, in order to facilitate the tool setting and measurement in the tool setting instrument, the machining accuracy of the base surface should also be ensured.

(2) optimization of tool structure

Advanced tool structure can greatly improve cutting power. For example, high-speed steel CNC milling tools have more wave edge and large helix angle structure in structure, while carbide indexable cutter has selected internal cooling, blade vertical installation, module replaceable and adjustable structure, while internal cooling structure is not suitable for general machine tools.

(3) the wide use of high quality data of cutting tools

In order to prolong tool life and improve tool strength, high strength alloy steel is selected for tool body data of many CNC tools, and heat treatment (such as nitriding and other surface treatment) is carried out to make it suitable for large cutting parameters, and the tool life is also significantly improved (generally, medium carbon steel after quenching and tempering is generally selected). In terms of cutting edge data, CNC tools use more new grades of cemented carbide (fine or ultra-fine particles) and superhard tool data.

(4) reasonable selection of chip breaking groove

The cutting tools used in CNC machine tools have strict requirements for chip breaking groove. When machining, if the cutting tool is constantly chipping, the machine tool can not work normally (some CNC machines and cutting are carried out in a closed state). Therefore, whether CNC lathe, milling, drilling or boring machine, the reasonable chip breaking groove type for different processing data and procedures is optimized, so that the chip breaking can be stable during cutting.

(5) coating treatment of tool (blade) surface

The appearance and development of tool (blade) surface coating skills are mainly due to the emergence and development of CNC tools. Because the coating can significantly improve the hardness of the tool, reduce friction, improve cutting power and service life, more than 80% of all kinds of cemented carbide indexable CNC tools are selected coating skills. The coated cemented carbide blade can also be used for dry cutting, which also creates favorable conditions for environmental protection and green cutting.

Source: Zhongshan tungsten steel milling cutter http://www.bjhtbj.cn