基于回归模型的钻削力组成定量测试研究  

Quantitative Test of Composition of Drilling Force Based on Regression Model

作　　者：屈植华 周志雄[1] 黄威武[2,3] 罗胜[2,3] 汤爱民[2,3] 王社权[2,3] 

机构地区：[1]湖南大学,湖南长沙410082 [2]株洲钻石切削刀具股份有限公司,湖南株洲412000 [3]硬质合金国家重点实验室,湖南株洲412000

出　　处：《硬质合金》2015年第5期330-334,共5页Cemented Carbides

基　　金："精密工具创新能力平台建设"科技重大专项(2015ZX04005008)

摘　　要：在本研究中,以轴向切削力Fz为例,通过特殊的试验设计(DOE),将钻削过程简化成定位、切入和正常切削3个阶段,并对切入过程进行等分处理,获得不同轴向切削深度h时的轴向切削力数值,采用相关和回归分析方法,获得经F-检验(显著水平α=0.01)的回归方程,其截距b0为横刃产生的轴向切削力Fch,系数b1为主切削刃产生的轴向切削力Fma。正常切削阶段与主切削刃完全切入时的轴向切削力之差ΔFz即为副切削刃产生的轴向切削力Fmi。在本次测试中,横刃轴向切削力Fch=263.49 N,主切削刃轴向切削力Fma=412.74 N,副切削刃轴向切削力Fmi=108.16 N,分别占比33%、53%和14%。Taking axial cutting force Fzas an example, through a special design of experiments（DOE）, the drilling process was simplified into three stages, such as positioning, plunging and normal cutting. The axial cutting force Fzat different axial cutting depth h was measured by dividing the plunging stage. The regression equation is obtain by the analysis of correlation and regression method using F test（level of significance α=0.01）, the intercept b0 is the axial cutting force of chisel edge marked as Fch, the coefficient b1 is the axial cutting force of main cutting edges marked as Fma. The difference of the axial cutting force marked as ΔFzbetween the normal cutting stage and when the main cutting edge is completely cut into, is the axial cutting force of the minor cutting edge marked as Fmi. In this test, the axial cutting force of chisel edge Fchis263.49 N, the axial cutting force of main cutting edges Fmais 412.74 N and the axial cutting force of minor cutting edge Fmiis108.16 N, accounted for 33%, 53% and 14% of total cutting force, respectively.

关 键 词：钻削力组成 试验设计 相关分析 回归分析 F-检验 

分 类 号：TG52[金属学及工艺—金属切削加工及机床]