基于单颗磨粒磨削的超声振动参数与磨削参数匹配性研究

发布时间：2018-05-27 09:30

本文选题：超声辅助磨削 + 单颗磨粒磨削　；参考：《机械工程学报》2017年19期

【摘要】：超声辅助磨削是一种适于加工陶瓷等硬脆材料的先进复合加工技术。超声辅助磨削过程中,超声振动参数与磨削用量的匹配性决定了超声振动作用对磨削过程的影响程度,目前尚缺乏深入的研究。针对这一问题,采用单颗磨粒工具对Si C陶瓷工件抛光表面进行超声辅助磨削及普通磨削试验,通过单颗磨粒磨削力、力比、磨削划痕形貌的对比,分析超声振动作用对磨削过程的影响随磨削用量变化的规律。结果表明,相同条件下单颗磨粒超声辅助磨削的磨削力与力比均小于普通磨削时;磨削用量较小时,单颗磨粒超声辅助磨削划痕形貌呈明显的锤击作用及断续磨削特征。随磨削用量的增大,超声辅助磨削过程中的锤击作用显著弱化,断续磨削特征趋于消失,两种方法之间的磨削力差异减小,即超声振动参数与磨削用量的匹配性变差。
[Abstract]:Ultrasonic assisted grinding is an advanced composite machining technology suitable for machining hard and brittle materials such as ceramics. In the process of ultrasonic assisted grinding, the matching between ultrasonic vibration parameters and grinding parameters determines the degree of influence of ultrasonic vibration on grinding process. In order to solve this problem, ultrasonic assisted grinding and common grinding experiments were carried out on the polishing surface of sic ceramic workpiece by single abrasive particle tool. The grinding force, force ratio and grinding scratch morphology of single abrasive particle were compared. The influence of ultrasonic vibration on grinding process is analyzed. The results show that the grinding force and force ratio of ultrasonic assisted grinding with single abrasive particle is lower than that of ordinary grinding under the same condition, and the grinding scratch morphology of ultrasonic assisted grinding with single abrasive particle has obvious hammering and intermittent grinding characteristics when the grinding amount is small. With the increase of grinding amount, the hammering effect in the ultrasonic assisted grinding process is weakened significantly, the characteristic of intermittent grinding tends to disappear, and the difference of grinding force between the two methods decreases, that is, the matching between ultrasonic vibration parameters and grinding dosage becomes poor.
【作者单位】：江苏理工学院机械工程学院;南京航空航天大学机电学院;
【基金】：江苏省高校自然科学研究(15KJB460010) 常州市应用基础研究计划(CJ20160039)资助项目
【分类号】：TG580.616

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