柯明峰,吕冰海,邵蓝樱,邵琦,周亚峰,王佳焕,袁巨龙.硬质合金刀片前刀面的剪切增稠抛光实验研究[J].表面技术,2022,51(1):220-228.
KE Ming-feng,LYU Bing-hai,SHAO Lan-ying,SHAO Qi,ZHOU Ya-feng,WANG Jia-huan,YUAN Ju-long.Experimental Study on ShearingThickening Polishing of Rake Surface of Cemented Carbide Inserts[J].Surface Technology,2022,51(1):220-228
硬质合金刀片前刀面的剪切增稠抛光实验研究
Experimental Study on ShearingThickening Polishing of Rake Surface of Cemented Carbide Inserts
投稿时间:2021-03-29  修订日期:2021-06-11
DOI:10.16490/j.cnki.issn.1001-3660.2022.01.023
中文关键词:  硬质合金刀片  剪切增稠抛光  表面粗糙度  田口法  方差分析
英文关键词:cemented carbide insert  shearing thickening polishing  surfaceroughness  Taguchi method  analysis of variance
基金项目:浙江省自然科学基金(LR17E050002)
作者单位
柯明峰 浙江工业大学 机械工程学院,杭州 310023 
吕冰海 浙江工业大学 机械工程学院,杭州 310023 
邵蓝樱 浙江工业大学 机械工程学院,杭州 310023 
邵琦 浙江工业大学 机械工程学院,杭州 310023 
周亚峰 浙江工业大学 机械工程学院,杭州 310023 
王佳焕 浙江工业大学 机械工程学院,杭州 310023 
袁巨龙 浙江工业大学 机械工程学院,杭州 310023 
AuthorInstitution
KE Ming-feng College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China 
LYU Bing-hai College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China 
SHAO Lan-ying College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China 
SHAO Qi College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China 
ZHOU Ya-feng College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China 
WANG Jia-huan College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China 
YUAN Ju-long College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China 
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中文摘要:
      目的 采用柔性的剪切增稠抛光(STP)方法抛光开设有弧形断屑槽的硬质合金刀片前刀面,降低其粗糙度,提高刀具的切削性能。方法 利用非牛顿幂率流体的剪切增稠效应与磨粒的微切削作用,实现对工件粗糙表面的微凸峰去除。以前刀面断屑槽的表面粗糙度为评价指标,采用田口法设计正交实验,分析抛光速度、磨粒浓度、倾斜角度以及磨粒粒度等抛光工艺参数对刀片前刀面表面粗糙度的影响,采用方差分析(ANOVA)法评估各因素的有效权重,得到优化工艺参数组合。结果 抛光速度对表面粗糙度的影响最大,为74%;磨粒粒度与磨粒浓度次之,均为11%;倾斜角度对刀片前刀面表面粗糙度的影响最小,仅为4%。在抛光速度为85 r/min、磨粒浓度为9%(质量分数)、倾斜角度为2°以及磨粒粒度为#8000的优化工艺参数组合下进行抛光实验,抛光15 min后,刀片前刀面断屑槽表面粗糙度从(120±20) nm下降到(7.2±0.6) nm,微观粗糙峰变得平滑,刃口完整无缺陷。结论 相对于传统毛刷抛光方法,剪切增稠抛光方法抛光硬质合金刀片前刀面的效率更高,抛光质量更好。通过优化抛光工艺参数,可以有效提高刀片表面质量,且不会造成刃口缺陷,为硬质合金刀片高效高质量抛光提供了新的方法。
英文摘要:
      A flexible shearing thickening polishing (STP) method can be used to polishthe rake surfaceof the cemented carbide insert with arcchipbreakerto reduce theroughnessofthe rakesurfaceandimprovethe cutting performance of the insert. The method utilizes the shearing thickening effect of non-Newtonian power-law fluid and the micro-cutting effect of abrasive particles to remove the micro-convex peaks on the rough surface of the workpiece. The surface roughness of the chipbreaker of the cemented carbide insert rake surfaceisused as the evaluation index. The Taguchi method is used to design the orthogonal experiment, and the influence of polishing speed, abrasive concentration, abrasive particlesize and inclination angle on the surface roughness of the insertrake surfaceisanalyzed. The analysis of variance (ANOVA) method, which is used to evaluate the effective weight of each factor, shows that the largest affecting factor forthe surfaceroughnessis the polishing speed (74%), followed by the abrasive particle size (11%), the abrasive concentration (11%) and theinclination angle (4%). Under the optimized processparameter combination:polishing speed 85 r/min, abrasive concentration 9wt%, inclination angle 2° and abrasive particlesize #8000, the surface roughness decreases from (120±20) nm to (7.2±0.6) nm, the rough micro-convex peaksbecome smoothand the cutting edge is complete without defects. Compared with traditional brush polishing method,STP method can realize higher efficiency and better quality for polishing the rake surface of the cemented carbide insert. By optimizing the polishing process parameters, the surface quality of the insert can be effectively improved and no defects are caused on the cutting edge. The result shows that the STP is a promising method for the efficient and high-quality polishing of the cemented carbide insert.
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