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About the knowledge of diamond tools


Natural diamond has excellent properties such as high hardness, wear resistance, small friction coefficient and good thermal conductivity. It is an ideal material for cutting non-ferrous and non-metallic cutting tools. It uses natural single crystal diamond tools to cut fine ultra-fine parts. , began in the late 1950s. Later, it was required to process aspherical curved mirrors, and then required to process large mirrors. High dimensional accuracy and small surface roughness are required. Nowadays, the use of natural single crystal diamond tools is now quite sophisticated, but due to its low output value and high price, coupled with the appearance of artificial diamonds, the increasing trend of the use of natural single crystal diamond tools in the fine processing category has been weakened. Artificial diamonds have gradually occupied a relatively low-demand processing mall with its outstanding functional price ratio and gradually sophisticated application skills. 3 Use of diamond tools Class 07 Machine Y4 Name Wang Qin Student number 07120431 Submitted date 2010.5.25 The excellent function of diamond determines its extensive use in machining. 3.1 Processing of difficult-to-machine non-ferrous metals When processing non-ferrous metals such as copper, zinc, aluminum and their alloys, these materials are adhered to the tool and should not be processed. Diamond tools made of diamond with low friction coefficient and low affinity with non-ferrous metals prevent metal from sticking to the tool. Since the modulus of elasticity of the diamond is large, the deformation of the blade portion during cutting is small, and the deformation of the non-ferrous metal to be cut is small, so that the cutting process is completed under a small deformation, and the appearance quality of the cutting can be improved. 3.2 Processing of difficult-to-machine non-metallic materials Processing difficult-to-machine non-metallic materials containing many high-hardness particles, such as glass fiber reinforced plastics, silicon-filled materials, and hard carbon fiber/epoxy composite materials, the hard points of the data make the tool The wear is severe, and it is difficult to machine with a carbide tool, and the diamond tool has high hardness and good wear resistance, so the processing efficiency is high. 3.3 Super-fine machining With the advent of modern integration skills, machining is carried out in a high-precision direction, which places considerable demands on tool functions. Due to the small friction coefficient of diamond, low thermal expansion coefficient and high thermal conductivity, it can cut very thin chips, and the chips flow out easily. The affinity with other substances is small, the built-up edge is not easy to occur, the heat generation is small, the thermal conductivity is high, and heat can be prevented. The influence of the blade and the workpiece, so the blade is not easy to passivate, the cutting deformation is small, and a higher quality appearance can be obtained.