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Grinding burn limits: Generation of surface layer modification charts for discontinuous profile grinding with analogy trials
CIRP Journal of Manufacturing Science and Technology ( IF 4.8 ) Pub Date : 2020-11-07 , DOI: 10.1016/j.cirpj.2020.09.014
Nikolai Guba , Jonas Heinzel , Carsten Heinzel , Bernhard Karpuschewski

By means of surface layer modification charts, the occurrence of thermal impact and thus the risk of grinding burn can be detected. With the present work it was shown that surface layer modification charts for discontinuous profile grinding can be generated using analogy trials carried out on a surface grinding machine for investigation of different grinding conditions and varied tilt angles in profile grinding. The experimental and the analysis effort for the analogy trials prove to be significantly more time and cost saving. The results also suggest that system parameters such as the grinding wheel specification or the cooling strategy are taken into account by the specific grinding power. Thus, the experimental results of this work allow the assumption that the determined process limit is not or just to a low extent depending on the system parameters. This assumption is supported by the thermal process limit determined by Malkin and converted in surface layer modification charts. Malkin's limit, identified for different ground steels with surface and cylindrical grinding processes and thus different system and process parameters, corresponds to the results generated in this work at workpieces ground with a kinematically more complex process. The results reveal that there is at least a group of steel materials which seems to share a similar thermal process limit.



中文翻译:

磨削极限:通过类比试验生成用于不连续轮廓磨削的表面层改性图

借助表面层改性图表,可以检测到热冲击的发生,从而发现磨擦的危险。通过目前的工作表明,可以使用在表面磨床上进行的类比试验来研究不连续轮廓磨削的表面层改性图,以研究轮廓磨削中的不同磨削条件和不同的倾斜角度。类比试验的实验和分析工作证明可以节省更多的时间和成本。结果还表明,特定的磨削功率会考虑系统参数,例如砂轮规格或冷却策略。从而,这项工作的实验结果可以假设所确定的过程极限不是或只是很小程度取决于系统参数。该假设得到了Malkin确定的热工艺极限的支持,并在表面层改性图表中进行了转换。马尔金极限值是针对采用表面和圆柱磨削工艺的不同磨削钢而确定的,因此具有不同的系统和工艺参数,对应于这项工作在运动学上更复杂的工件上产生的结果。结果表明,至少有一组钢铁材料似乎具有相似的热处理极限。对于具有表面和圆柱磨削工艺的不同磨削钢,因此具有不同的系统和工艺参数,这些结果与在运动学上更复杂的磨削工件时产生的结果相对应。结果表明,至少有一组钢铁材料似乎具有相似的热处理极限。对于具有表面和圆柱磨削工艺的不同磨削钢,因此具有不同的系统和工艺参数,所确定的结果与以运动学上更复杂的工艺磨削的工件所产生的结果相对应。结果表明,至少有一组钢铁材料似乎具有相似的热处理极限。

更新日期:2020-11-09
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