2013年8月26日星期一

diamond cutter tool wear and process parameters

Diamond hard chemicals belonging to a substance, so the diamond tool is manufactured so hard, diamond tool wear and tool process parameters and the coordination between process parameters have a great relationship, it is necessary to process parameters optimized.
(1) Processing Conditions
Because diamond tool wear their concrete saw blades  load status are closely related, so the processing conditions will have a significant impact on wear. Daixiang Guo and other analysis of engineering ceramic diamond wheel cutting wheel life when the process parameters on the impact that when the other parameters constant, corresponding to the depth of each cut exists an optimum wheel speed; when the cutting depth and the wheel speed is constant, there is a optimum feed rate; various process parameters on the grinding wheel wear effects radial order was: wheel speed - cutting depth - feed speed. Tool wear and machining process parameters and the core drill bits  coordination between process parameters have a great relationship, it is necessary to optimize the process parameters. ZJPei analyzed the situation when grinding wafers, the following conclusions: When the wheel speed is 4350rpm, chuck speed is 590rpm, the grinding force increases, when it reaches a certain peak, back to a lower value, and Click cycle continues, gradually become dull wheel described, when the grinding force reaches a certain value, broken grains; when the wheel speed is 2175rpm, the chuck speed of 40rpm, the grinding wheel when the grinding force is smaller broken. Therefore, the grinding force is substantially constant and high wear rates.
(2) Work material
Different workpiece materials, the sanding belt   fracture toughness, hardness etc difference is large, also affects the properties of the workpiece material wear of diamond tools. It is a professional with a diamond saw cutting tool wear when different stone and said: When cutting hard granite, the diamond saw abrasive wear is mainly macro broken and fall off, because the holding power is not enough, the cutting conditions bad; when cutting softer granite, the full microscopic crystal and abrasive crushing larger proportion, while still high proportion of grain shedding, such wear to keep the blade cutting capacity. XU Xi Peng said: granite in different minerals is to determine the nature and mechanism of deformation failure mode of diamond key. Quartz content is higher, the more intense wear diamond; orthoclase content is clearly high, the sawing process is relatively difficult to carry out; under the same cutting conditions, coarse granularity finer granularity than granite granite more difficult to cleavage fracture occurs.

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