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What are the differences between CNC cutting tools and ordinary shearing machines?
2021-04-25
The difference between CNC shearing machine tool and ordinary shearing machine
1. High-precision manufacturing quality
In order to stably process the surface of high-precision parts, more stringent requirements are put forward for the manufacture of tools (including tool parts) in terms of precision, surface roughness, form and position tolerance, etc. than ordinary tools, especially indexable tools. In order to ensure the repeat accuracy of the blade tip (cutting edge) after indexation, the size, accuracy and surface roughness of key parts such as the tool body groove and positioning parts must be strictly guaranteed, at the same time, in order to facilitate the tool in the tool set and size measurement, the base surface machining accuracy 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 tool in the structure has been more use of wave edge and large helix angle structure, carbide indexable tool is used in the cooling, blade vertical, module can be replaced and adjustable structure, and such as internal cooling structure, is the general general machine tool can not be applied.
3. Wide application of high-quality cutting tool materials
In order to prolong 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 parameters, and tool life can be significantly improved (ordinary tools are generally used after quenching and tempering treatment of medium carbon steel). In the cutting edge material, CNC tool is more selected a variety of new grades of cemented carbide (fine particles or ultrafine particles) and superhard tool materials.
4. Selection of reasonable chip breaking groove
Cutting tools used on CNC machine tools have strict requirements on chip breaker. When machining, the machine tool cannot work normally (some CNC machine tools and cutting are carried out in a closed state). Therefore, regardless of CNC turning, milling, drilling or boring machine, the blade is preferably a reasonable chip-breaking groove type for different processing materials and processes, so that stable chip-breaking can be obtained during cutting.
5. Surface coating treatment
The emergence and development of 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, so in all kinds of carbide indexable CNC tools more than 80% of the use of coating technology.
2021
/
04-25
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Industry Information
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