xiehe model

(1) Select the tool according to the material of the part. Such as turning or milling high-strength steel, titanium, and stainless steel parts, it is recommended to use indexable carbide tools with better wear resistance.

(2) Select the tool according to the stage of precision cnc machining. That is to say, the rough machining stage is mainly to remove the allowance, and the tool with good rigidity and low precision should be selected. In the semi-finishing stage, in order to ensure the accuracy and quality of the parts, the tool with high durability and relatively high precision should be selected. The lowest tool precision and the finishing stage using the highest precision tool.

If the same tool is selected for roughing and finishing, it is recommended to choose the roughing tool produced by finishing, because the wear of the blade part of the tool produced by finishing is mostly mild wear, and the continued use of the worn coating wiper will affect the quality of finishing. But it has little effect on the finishing quality. roughing.

(3) Select the tool and geometric parameters according to the characteristics of the processing area. Small tools with a large diameter and aspect ratio should be used in the part structure permit; when cutting thin-walled parts, the center of the thin-walled part passing the blade should have sufficient end center angle to reduce the cutting tool and cutting force of the part. For processing parts made of soft materials such as aluminum and copper, a milling cutter with a slightly larger rake angle should be selected, and the number of teeth should not exceed four.

When selecting a tool, the size of the tool should be adapted to the surface size of the workpiece. Production, around the contour processing of plane parts, often use end mills; milling plane, need to choose carbide blade milling cutter; processing boss, high speed steel milling cutter groove; processing rough surface or rough machining hole, you can choose hard alloy blade milling cutter; Alloy inserts or corn milling inserts; ball mills, ring mills, cone mills and disc mills are often used for bevel machining of some three-dimensional surfaces and contour changes.

On the free-form surface, since the ball end mill is zero, the line distance to ensure precise cutting is generally small, so the ball end mill is suitable for surface finishing. This kind of end mill is far superior to the ball cutter in terms of surface processing and processing efficiency. Therefore, under the premise of ensuring the processing of parts, but under the premise of rough machining and semi-finishing surface cutting, try to choose the side milling cutter. In addition, the durability and precision of the tool have a great relationship with the price of the tool, and we must note that in most cases, although the choice of a good tool increases the cost of the tool, the resulting processing quality and efficiency can be greatly improved. cut costs.