碳化硅微结构超声辅助磨削试验研究
Experimental Study on Ultrasonic Assisted Grinding of Silicon Carbide Microstructure
李红博 1陈涛 1段振岩 1张益文1
作者信息
- 1. 武汉理工大学机电工程学院,湖北 武汉 430070
- 折叠
摘要
为了提高无压烧结碳化硅微结构加工质量,开展了普通磨削和超声辅助磨削对比试验,探究了工艺参数对加工质量的影响规律.结果表明,加工过程磨削力、表面粗糙度及棱边圆弧半径均随主轴转速的提高而降低、随进给速度的提升而增大,且进给速度对磨削力的影响远大于主轴转速,但对于表面粗糙度和棱边圆弧半径,两工艺参数对其影响程度类似;超声振动可有效降低磨削力、表面粗糙度和棱边圆弧半径,降幅分别为(9.4～34.6)%、(12.9～28.9)%、(4.8～16.3)%;加工表面微观形貌表明,材料在加工过程中塑性去除行为与脆性去除行为并存,超声辅助磨削更易实现塑性去除,故所得加工质量较好.
Abstract
To improve the machining quality of silicon carbide ceramic microstructure,both conventional grinding and ultrason-ic assisted grinding were conducted to investigate the influence of processing parameters on the surface quality.The results demon-strate that the grinding force,surface roughness and edge arc radius decrease with the increase of spindle speed and increase with that of the federate.The influence of feed speed on grinding force is much greater than that of spindle speed,while the influence de-gree of these two parameters on surface roughness and edge arc radius is similar.The application of ultrasonic vibration can effec-tively reduce grinding force,surface roughness and edge arc radius by(9.4～34.6)%、(12.9～28.9)%、(4.8～16.3)%,respective-ly.Furthermore,the micro morphology of the machined surface shows that the plastic removal behavior and brittle removal behav-ior coexist during the grinding process.Ultrasonic assisted grinding is easier to achieve material plastic removal and can gain bet-ter machining quality compared to conventional grinding.
关键词
碳化硅/微结构/超声辅助磨削/磨削力/加工质量Key words
Silicon Carbide/Microstructure/Ultrasonic Assisted Grinding/Grinding Force/Machining Quality引用本文复制引用
基金项目
装备预先研究领域基金(61409230116)
出版年
2024
NETL
NSTL
万方数据