摘要
研究了纤维板铣削过程中切削速度和平均切削厚度对切削力和表面粗糙度的影响。结果表明:平行进给方向的切削分力Fx和垂直进给方向的切削分力Fy都会随着切削刃在工件中位置的变化而变化;切削分力Fx的最大值、切削分力Fy正值的最大值与负值的最小值的绝对值,以及表面粗糙度均随着平均切削厚度的增加而增大;高速铣削时的切削分力Fx的最大值、切削分力Fy正值的最大值和负值的最小值的绝对值,以及表面粗糙度均小于低速铣削时;当加工表面粗糙度要求相同时,高速铣削时的平均切削厚度可大于低速铣削时。因此,高速铣削不仅可以提高加工效率,还可以改善表面的加工质量。
As one of the most common machining operation, cutting speed and chip thickness during milling are two im- portant machining determinants of machining productivity, surface quality and cutting forces. The aim of this work is to invest the effect of cutting speed and chip thickness on cutting forces and machined surface roughness during peripheral milling of fiberboard. The results showed that cutting forces components of parallel force F~ and normal force Fy were var- ied with the change of cutting edge in workpiece during the cutting process ; the maximum value of parallel cutting force, the absolute value of maximum positive Fy value, the minimum negative Fy value, and surface roughness were all in- creased with the increase of average cutting thickness; the maximum Fx value, the absolute value of maximum positive Fy value, the maximum negative Fy value, and surface roughness during high-speed milling were all smaller than that of low-speed milling; when the required machined surface roughness value was same, the larger average cutting thickness could be allowed by high-speed milling compared with low-speed milling. In conclusion, high speed cutting conditions can not only improve the machining productivity, but also improve the quality of the machined surface.
出处
《林业工程学报》
北大核心
2016年第4期114-117,共4页
Journal of Forestry Engineering
基金
国家自然科学基金项目(31500480)
江苏高校优势学科建设工程资助项目(PAPD)
关键词
纤维板铣削
切削厚度
切削速度
切削力
表面粗糙度
fiberboard milling
chip thickness
cutting speed
cutting force
surface roughness
作者简介
郭晓磊，男，讲师，博士，研究方向为木材切削加工。E-mail：youngleiguo@hotmail．com
