陶瓷CBN砂轮修整方法及修整工艺研究  

Research on dressing method and technology for vitrified CBN grinding wheel

作　　者：王爱珍[1] 王战[2] 

机构地区：[1]南京航天航空工业大学,南京210016 [2]郑州磨料磨具磨削研究所,郑州450013

出　　处：《金刚石与磨料磨具工程》2008年第2期64-68,共5页Diamond & Abrasives Engineering

摘　　要：本文论述了陶瓷CBN砂轮修整的重要性,对修整的整形和修锐两个步骤进行了评述。使用电镀金刚石滚轮对用于数控磨削凸轮轴的高速陶瓷CBN砂轮进行了修整工艺的实验研究,得出了滚轮与砂轮的速差是影响修整效果的重要因素,顺修的修整效果优于逆修方式。顺修时速差不能过小,否则容易造成磨削振纹。必须使用逆修的场合,速差不能过大,建议对砂轮采取降速修整。根据实验结果,得出了速差的合适范围——顺向修整速差不能小于11 m/s,逆向修整速差不能大于95 m/s;滚轮相对砂轮纵向走刀速度推荐使用600 mm/min。在此参数范围内修整出的砂轮,用于磨削冷激铸铁凸轮轴凸轮,表面粗糙度为0.63μm,凸轮桃尖部无振纹、麦穗纹及单斜纹,质量达到了工件的技术要求。Dressing technology for vitrified CBN grinding wheel was discussed in two aspects including truing and sharpening. An electroplated diamond dressing roller was used for dressing test on high speed vitrified CBN wheel during cam shaft NC grinding. The results showed that , the speed difference between roller and grinding wheel is the main affecting factor on the dressing effect ;down-dressing is superior in effect to up-dressing;with too low speed difference during down-dressing,ground wave could appeare on the workpiece;reduced grinding wheel speed is suggested during up-dressing to prevent from too high speed difference. An adaptable speed difference was obtained from a great lot of tests which is 〉 11 m/s for down-dressing , and 〈 95 m/s for updressing. 600 mm/min is suggested for longitudinal feeding speed of the roller versus the grinding wheel. With the above suggested parameters,a grinding test on cold quenched east iron earn showed that , the workpiece surface roughness is 0.63 μm, no vibration wave nor wheat ear-like or single oblique stripe was observed.

关 键 词：陶瓷CBN砂轮 修整 滚轮 

分 类 号：TQ164[化学工程—高温制品工业]