作者：师超钰, 冯克明, 朱建辉

作者单位：郑州磨料磨具磨削研究所有限公司, 河南 郑州 450000

关键词：电镀砂轮;磨粒等高性;表征参数;磨削性能

摘要：

为解决电镀砂轮表面磨粒等高性差导致的磨削性能不佳的问题，提出磨粒等高性的测量方法和量化指标（Hr和Hs），采用金刚石滚轮对砂轮进行微量修整，检测磨削功率和磨削表面质量以评价砂轮磨削性能，分析磨粒等高性与砂轮磨削性能的关系。实验结果表明：微量修整可以明显提高电镀砂轮表面磨粒的等高性，从而改善磨削表面振纹和粗糙度，但应防止修整钝化；为获得良好修整效果，通过Hr定量分析，修整前Hr值不能大于磨粒直径的30%，修整后不宜大于磨粒直径的8%。

Research on influences of grain height consistency on grinding performance of electroplated wheel

SHI Chaoyu, FENG Keming, ZHU Jianhui

Zhengzhou Research Institute for Abrasive & Grinding Co., Ltd., Zhengzhou 450000, China

Abstract: To solve the problem of poor grinding capability of electroplated grinding wheel caused by the difference of height consistency of grains on surface electroplated grinding wheel, the measurement methods and quantification indexes(H_r and H_s) were proposed. Meanwhile, a precise dressing was carried out for the grinding wheel with a diamond roller, and the grinding performance was evaluated through monitoring the grinding power and grinding surface quality, and then, the correlation between grain height consistency and grinding performance of grinding wheel was analyzed. The results demonstrate that precise dressing can improve grain height consistency on the surface of electroplated grinding wheel distinctly, which can also improve the chatter mark and roughness of the grinding surface; however, blunt dressing should be avoided. In order to achieve great dressing effects, the value of H_r before dressing should not exceed 30% of the grain diameters and the value of H_r should not exceed 8% of the grain diameters after dressing based on H_r quantitative analysis.

Keywords: electroplated grinding wheel;grain height consistency;characterization parameters;grinding performance

2016, 42(8): 135-140  收稿日期: 2016-1-10;收到修改稿日期: 2016-2-27

基金项目: 国家科技支撑计划基金资助项目（2015BAF31B00）

作者简介: 师超钰(1988-),男,河南郑州市人,助理工程师,硕士,主要从事智能磨削监测与测试的研究。

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