Experimental evaluation of grinding zirconia ceramics with vein bionic fractal textured diamond grinding wheel
-
摘要: 针对氧化锆陶瓷在传统砂轮磨削过程中,存在磨削力大、加工质量较差等问题。根据叶脉的分形结构在减阻导流与散热传质方面的优异性能,建立了叶脉自适应生长模型和分形角模型,设计了三种不同分形角度(30°、45°、60°)的叶脉仿生分形纹理化金刚石砂轮。对比分析原始砂轮与三种仿生分形砂轮对氧化锆陶瓷磨削表面粗糙度、磨削力和磨削力比的影响。试验结果表明:与原始砂轮相比,仿生分形砂轮的法向磨削力有效降低了12.7%~55.8%,切向磨削力有效降低了8.1%~40.3%,分形角为30°时获得磨削力比最小值1.4~3.0与最小的表面粗糙度值。这表明仿生分形砂轮比原始砂轮具有更好的磨削性能,并为构建基于叶脉的仿生分形纹理化砂轮的方法提供了进一步证据。Abstract: In the traditional grinding process of zirconia ceramics, there are problems such as large grinding force and poor processing quality. According to the excellent performance of the fractal structure of the veins in drag reduction, diversion and heat and mass transfer, the adaptive growth model and fractal angle model of the veins were established, and the bionic fractal textured diamond grinding wheels with three different fractal angles ( 30 °, 45 °, 60 ° ) were designed. The effects of the original grinding wheel and three bionic fractal grinding wheels on the surface roughness, grinding force and grinding force ratio of zirconia ceramics were compared and analyzed. The experimental results show that compared with the original grinding wheel, the normal grinding force of the bionic fractal grinding wheel is effectively reduced by 12.7 % ~ 55.8 %, and the tangential grinding force is effectively reduced by 8.1 % ~ 40.3 %. When the fractal angle is 30 °, the minimum grinding force ratio is 1.4 ~ 3.0 and the minimum surface roughness value is obtained. This indicates that the bionic fractal grinding wheel has better grinding performance than the original grinding wheel, and provides further evidence for the method of constructing bionic fractal textured grinding wheel based on veins.
点击查看大图
计量
- 文章访问数: 174
- HTML全文浏览量: 63
- 被引次数: 0