If you are engaged in NC machining, are you not clear about the key number code on the cutter box when you use the CNC blade; Are you worried about how to choose the right type of blade in the face of many blades? If you have such problems at present, please watch the following content, which will be helpful to you. Because, in the complex world of metal cutting, correct metal cutting means that the first need to understand the workpiece material, and then choose the correct blade groove shape and grade to adapt to specific applications, so as to get twice the result with half the effort!
In the article "how to distinguish the material grades of workpieces in numerical control processing technology", I explained the characteristics and applicable occasions of the material grades of workpieces (P, m, K, N, s, H). On the toolbox plate in the figure below, P indicates that this type of blade is suitable for cutting steel. The two-digit data not exceeding 50 after P indicates the tool performance, from high wear resistance to high toughness. The performance of p10-p30 in this figure is moderate. In addition, the reference cutting parameters suitable for this tool are also marked. You can understand the above.
So what does CNMG120404-PM on the cutter box plate mean? This is the focus of this paper. Next, mainly explain the meaning of the model. After mastering the basic knowledge of cutting tools, you only need a picture to completely master the rules of blade coding! In the process of NC turning, the workpiece material has a direct impact on tool wear. For example: in steel processing, the main problems are flank wear, crater wear and plastic deformation; In the process of stainless steel processing, the main problems are chip accumulation and groove wear; In cast iron machining, the main problems are flank wear and plastic deformation, which is very necessary for tool selection.
Therefore, the selection of the blade should be based on the material type and application of the workpiece, but also on the shape of the blade. The tip angle of the blade should be from the minimum 35° Change to round blade, as shown in the figure below, and each shape of blade has different characteristics, how to select? Look down.
ISO(the first character)
The larger the tip angle, such as R, means the greater the strength of the blade and the higher the feed rate, but it will increase the cutting force and vibration, which is suitable for rough machining, hard material machining and discontinuous machining;
The smaller the tip angle, such as V, means that the cutting edge strength is worse, but it has better accessibility in profiling, which can reduce the cutting force and vibration, and is suitable for finishing, profiling, longitudinal turning, etc.
After mastering the above knowledge, you can master the tool coding rules and understand the meaning of cnmg120404-pm by looking at the figure below.
Now you can understand the meaning of this blade code! If you find it useful, please pay attention to it and collect it!
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