CNC tools are applied in high-performance and high-precision CNC machine tools. In order to obtain stable and good processing efficiency, CNC tools are generally put forward higher requirements than ordinary tools from design, manufacturing and use. The main difference between CNC tools and ordinary tools is in the following aspects.
(1) High precision manufacturing quality
In order to stabilize the machining of high-precision parts, the manufacturing of tools (including tool parts) has more stringent requirements than ordinary tools in terms of accuracy, surface roughness, form and position tolerance, especially indexable tools, in order to ensure the repeated accuracy of the blade tip (cutting edge) after the rotation of the size, The size, accuracy and surface roughness of key parts such as the tool groove and positioning parts of the tool body must be strictly guaranteed. At the same time, in order to facilitate the measurement of the tool and the size of the tool in the tool setting instrument, the machining accuracy of the base surface should also be guaranteed.
(2) Optimization of tool structure
Advanced tool structure can greatly improve the cutting efficiency, such as high-speed steel CNC milling tools in the structure has been more waveform edge and large spiral Angle structure, carbide indexable tools are used in the internal cooling, blade vertical mount, module replaceable and adjustable structure, and such as internal cooling structure, it is the general ordinary machine tool can not be applied.
(3) Wide application of high-quality materials for cutting tools
In order to extend the service life of the tool and improve the strength of the tool, many CNC tool body materials are made of high-strength alloy steel, and heat treatment (such as nitriding and other surface treatment), so that it can be applied to large cutting amounts, and the tool life can also be significantly improved (ordinary tools are generally used after tempering treatment of medium carbon steel). In the tool edge material, CNC tools are more used a variety of new grades of cemented carbide (fine particles or ultrafine particles) and superhard tool materials.
(4) Reasonable selection of chip breaker
The cutting tools used in CNC machine tools have strict requirements for chip-breaking slots. When processing, the tool continuously chips, the machine tool can not work normally (some CNC machine tools, cutting is in a closed state), so regardless of CNC turning, milling, drilling or boring machine, the blade is optimized for different processing materials and processes of reasonable chip breaking slot, so that the cutting can be stable chip breaking.
(5) Coating treatment of the surface of the tool (blade)
The emergence and development of tool (blade) surface coating technology is 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 efficiency and service life, most of the coating technology is used in all kinds of cemented carbide indexable CNC tools. The coated carbide blade can also be dry cut, which also creates favorable conditions for protecting the environment to achieve green cutting.
Post time: Aug-15-2023