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Table material suitable for machining various tools
Ceramic tools have been used to process a variety of cast iron, steel, thermal spray welding materials, nickel-based superalloys.
Diamond tools are suitable for processing non-metallic materials, non-ferrous metals and their alloys. Due to the poor thermal stability of diamond, the hardness is lost when the cutting temperature reaches 800 °C. Because diamond and iron have strong chemical affinity, iron atoms easily interact with carbon atoms at high temperatures to convert them into graphite structures, and the tools are easily damaged. Therefore, diamond tools are not suitable for processing steel materials, when cutting non-ferrous metals. The life of PCD tools is tens or even hundreds of times that of cemented carbide tools.
Cubic boron carbide tools are suitable for roughing and finishing of hardened steel, bearing steel, high speed steel and chilled cast iron, and are also suitable for high speed cutting of high temperature alloys, thermal spray materials, hard alloys and other difficult materials. The CBN tool is one of the best tools for car grinding.
2 tools
The following describes the common tools for machining housings on machining centers.
1, milling cutter
In face milling, size and position are important factors due to the relationship between the milling cutter and the workpiece. When selecting a tool, the width of the workpiece determines the diameter of the milling cutter. For small machining parts, the general tool diameter is 30% larger than the workpiece, but machine power and stability play a decisive role in many cases. Face milling often takes several passes to complete.
The blade of the milling cutter is another important factor in optimizing the milling results. It is an advantage to have more than one blade to be cut at the same time in any one milling, but too many blades participating in the cutting are disadvantages. It is impossible for each cutting edge to cut at the same time during cutting, and the required power is related to the number of cutting edges participating in the cutting. The position of the milling cutter relative to the workpiece plays an important role in the chip formation process, the cutting edge load and the machining results. In face milling, with a milling cutter that is approximately 30% larger than the cutting width and positions the milling cutter close to the center of the workpiece, the chip thickness does not change much. The chip thickness cut in and out is slightly thinner than the cutting thickness at the center cutting.
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