BT CNC tool is a tool used for cutting in mechanical manufacturing, also known as cutting tool. Cutting tools in a broad sense include both cutting tools and abrasives; At the same time, "NC tool" includes not only the blade for cutting, but also the accessories such as tool bar and tool handle! The difference between BT CNC tool and ordinary tool. When applied to high-performance and high-precision CNC machine tools, in order to achieve stability and good machining efficiency, generally higher requirements are put forward for NC tools in terms of design, manufacturing and use than ordinary tools. The main differences between CNC tools and ordinary tools are in the following aspects: 1. Wide application of cutting tool materials In order to prolong the service life of the tool and improve the strength of the tool, the tool body materials of many CNC tools adopt high-strength alloy steel and undergo heat treatment (such as nitriding and other surface treatment), so that they can be suitable for large cutting quantities, and the tool life can be significantly improved (ordinary tools generally use medium carbon steel after quenching and tempering treatment). In terms of cutting edge materials, CNC cutting tools use more cemented carbide (fine or ultra-fine particles) and superhard cutting tool materials of various new brands. 2. High precision manufacturing quality In order to stably process the surface of high-precision parts, more stringent requirements are put forward for the manufacturing of tools (including tool parts) in terms of accuracy, surface roughness and shape and position tolerance than ordinary tools, especially indexable tools. In order to ensure the repeated accuracy of the size of blade tip (cutting edge) after rotation, the size and accuracy of key parts such as tool body, groove and positioning parts The surface roughness must be strictly guaranteed. At the same time, in order to facilitate the tool setting and dimension measurement of the tool in the tool setting instrument, the machining accuracy of the base surface should also be guaranteed. 3. Reasonable selection of chip breaking groove
The cutter used in CNC machine tool has strict requirements for chip breaking groove. During machining, if the cutting tool keeps chipping, the machine tool cannot work normally (some CNC machine tools and cutting are carried out in a closed state). Therefore, regardless of CNC lathe, milling, drilling or boring machine, the blade selects a reasonable chip breaking groove type for different machining materials and processes, so that stable chip breaking can be obtained during cutting.
4. Optimization of tool structure The advanced tool structure can greatly improve the cutting efficiency. For example, the structure of high-speed steel CNC milling tools has mostly adopted the structure of wave edge and large spiral angle, while the carbide indexable tools adopt the structure of internal cooling, blade vertical installation, module replaceable and adjustable, while the internal cooling structure is not applicable to ordinary machine tools.
February 09, 2022
