Experimental study of the effect of tool orientation in five-axis micro-milling of brass using ball-end mills
Experimental study of the effect of tool orientation in five-axis micro-milling of brass using ball-end mills
复制标题
DOI：
10.1007/s00170-012-4549-6
复制
发表时间：
2013-07-01
影响因子：
3.4
通讯作者：
Bordatchev, Evgueni V.
中科院分区：
文献类型：
--
作者：
Fard, M. Javad Barakchi;Bordatchev, Evgueni V.
研究了球头铣刀五轴微细铣削黄铜时，刀具方位对最终表面几何形状和加工质量的影响。用不同的刀具倾角和倾角切割具有半圆形横截面的直槽，并用光学轮廓仪和显微镜对所得表面进行表征。为了研究刀具取向与加工表面质量之间的关系，同步记录了主轴电流和刀具运动的微切削力。各种切削试验和对最终表面几何形状的分析表明，改变刀具方向减少了黄铜球头铣削中经常出现的沟槽底部材料的摩擦，提高了最终表面质量。表面粗糙度的实验分析表明，采用15A的刀具倾角可以显著改善沟槽底部的表面粗糙度。对切削力的静态和平均峰谷(P-to-V)值的分析表明，当刀具倾角从0度增加到15A度时，静态切削力降低了一半。在倾斜加工中，沿进给方向的P-V切削力值也有所降低。
The effect of tool orientation on the final surface geometry and quality in five-axis micro-milling of brass using ball-end mills is investigated. Straight grooves with a semicircular cross section are cut with different tool inclination and tilt angles, and the resulting surfaces are characterized using an optical profilometer and microscope. Micro-milling cutting forces are recorded synchronously with spindle electric current and cutting motions in order to investigate the correlation between the tool orientation and the achieved surface quality. Results of various cutting experiments and analysis of the final surface geometry show that varying the tool orientation reduces rubbing of the material at the bottom of the grooves, which often occurs in ball-end milling of brass, and improves the final surface quality. The experimental analysis for surface roughness shows that applying a tool inclination angle of 15A degrees can considerably improve the surface roughness at the bottom of the grooves. Analysis of static and averaged peak-to-valley (P-to-V) values of the cutting forces show that the static cutting force values are reduced by half when the tool inclination was increased from 0 to 15A degrees. P-to-V cutting force values in along-the-feed direction were also decreased in the inclined machining.