【作者】 黄辉； 徐西鹏；

【Author】 Huang Hui , Xu Xipeng (Provincial Key Research Lab for Stone Machining, Huaqiao University, Quanzhou 362011, China)

【机构】 华侨大学石材加工研究福建省高校重点实验； 华侨大石材加工研究福建省高校重点实验；

【摘要】 本文运用点热源迭加法理论对两种不同磨削方式加工过程中磨削弧区的温度场进行了理论解析,并采用夹丝热电偶法实际测量了磨削弧区温度,通过将实验结果与理论解析结果进行拟合得到了传入工件的能量与传入工具的能量百分比,研究结果表明,垂直轴干磨削花岗石过程中磨削弧区内的花岗石表面的平均温度不超过100℃。工具与工件接蚀界面中约51%的热量传入工件,其他的热量传到的树脂结合剂砂轮。在平面磨削花岗石的过程中,磨削弧区温度不超过120℃,工具与工件接触界面中约有31%的热量传到工件,其他的热量传到了树脂砂轮。本文的研究结果对减小金刚石工具消耗,提高加工效率和石材表面质量有实际指导意义。更多还原

【Abstract】 An investigation is reported of theoretical analysis of the temperatures in the grinding zone, using the principle of point heat source superposition, when diamond disks grind granite with the vertical spindle surface grinding and with normal grinding. Temperature responses in the grinding zone were measured using a pair of constantan-iron foils. Comparing the temperature result of the analysis and experiment in the grinding zone, the rate of the heat partition at the interface of the tools and workpiece was studied, and the theory model of the rate of the heat partition was established. The experiment resuit showed that the average temperatures in the grinding zone of surface grinding were below 100"C and about 51% of the generated heats at the diamond disk-workpiece interface were conducted to the granite, Therefore, the average temperature of normal grinding were below 120℃ and about 31% of the generated heats were conducted to the workpiece. The findings will have some practical meaning to costefficiency machining granite with high surface quality.更多还原