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DETERMINATION OF TEMPERATURE DURING DEPTH GRINDING AND CONDITIONS FOR ITS DECREASE

机译：在深度研磨期间测定温度和减少条件

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摘要

A theoretical analysis of the conditions for reducing the temperature of grinding has been carried out and it has been shown that temperature of deep grinding is greater than under conventional multi-pass grinding with the same processing capacity. It is possible to reduce the temperature of deep grinding by increasing the cutting ability of the wheel and providing abundant heat removal from the cutting zone by using coolant, as well as reducing the speed of the wheel to reduce the friction intensity in the cutting zone. With a significant increase in the speed of the wheel (to values of 300 m/s), the main part of the heat released in the cutting zone is carried away with chips, and the grinding temperature decreases. This allows efficient use of deep grinding scheme. It is theoretically established that in this case the heating temperature of the chips is determined solely by the conditional cutting stress. Therefore, reducing it can reduce the temperature of grinding. The obtained results of theoretical studies were used to create a high-performance technological process of diamond electro-erosive grinding (diamond-spark grinding) of cutting multiblade carbide tools with elevated grinding depths (up to 0.6 mm) and a relatively low part speed (0.5 ... 1 m / min). This ensures the high quality of the surfaces to be treated (there are no burns, microcracks and other temperature defects).
机译：已经进行了降低研磨温度的条件的理论分析，并且已经表明深磨削的温度大于具有相同处理能力的常规多通磨削。通过增加车轮的切割能力并通过使用冷却剂从切割区域提供充分的热量，可以减少深度研磨的温度，以及降低车轮的速度以降低切割区中的摩擦强度。车轮速度的显着增加（为300米/秒的值），切割区中释放的热量的主要部分用碎片承载，并且研磨温度降低。这允许有效地利用深层研磨方案。理论上，在这种情况下，在这种情况下，芯片的加热温度仅通过条件切割应力来确定。因此，减少它可以降低研磨的温度。所获得的理论研究结果用于制造切割倍闻碳化物工具的金刚石电腐蚀研磨（金刚石火花磨削）的高性能技术过程，升高磨削深度（高达0.6mm）和相对较低的部分速度（ 0.5 ... 1米/分钟）。这确保了待处理的表面的高质量（没有烧伤，微裂纹和其他温度缺陷）。

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