压铸铝合金用铣刀表面微织构及切削特性研究

doi:10.16183/j.cnki.jsjtu.2020.195

上海交通大学学报 ›› 2021, Vol. 55 ›› Issue (6): 750-756.doi: 10.16183/j.cnki.jsjtu.2020.195

所属专题：《上海交通大学学报》2021年“金属学与金属工艺”专题；《上海交通大学学报》2021年12期专题汇总专辑

压铸铝合金用铣刀表面微织构及切削特性研究

何利华¹, 潘建峰²(), 倪敬¹, 冯凯¹, 崔智¹

1.杭州电子科技大学机械工程学院, 杭州 310018
2.杭州职业技术学院特种设备学院, 杭州 310018

收稿日期:2020-10-21 出版日期:2021-06-28 发布日期:2021-06-30
通讯作者: 潘建峰 E-mail:57776984@qq.com
作者简介:何利华(1987-),男,浙江省杭州市人,博士,讲师,从事绿色微纳制造技术、精密特种加工技术研究
基金资助:
国家自然科学基金项目(51775153);浙江省自然科学基金项目(LQ20E050012);浙江省基础公益技术研究计划(LGG20E050002)

Surface Micro-Texture and Cutting Characteristics of Milling Cutter for Die-Casting Aluminum Alloy

HE Lihua¹, PAN Jianfeng²(), NI Jing¹, FENG Kai¹, CUI Zhi¹

1. School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
2. Special Equipment Institute, Hangzhou Vocational and Technical College, Hangzhou 310018, China

Received:2020-10-21 Online:2021-06-28 Published:2021-06-30
Contact: PAN Jianfeng E-mail:57776984@qq.com

摘要/Abstract

摘要：

针对压铸铝合金在切削力影响下加工精度低、表面质量不高等问题,提出在铣刀前刀面加工沟槽和V型阵列表面微织构的方法.通过三向力传感器监测并分析铣削过程中的铣削力变化情况,重点分析y向铣削力(F_y)频谱特性.将采集到的F_y 进行快速傅里叶变换,得到3种不同铣刀F_y 的频谱分析图,利用表面形貌和表面粗糙度评价表面微织构铣刀的铣削性能.结果表明:相较于普通铣刀在x、y和z方向的铣削力均值,沟槽阵列表面微织构铣刀的均值分别降低了3.8%、0.29%和11.7%,V型阵列表面微织构铣刀的均值分别降低了8.5%、14.3%和12.4%;在6倍主轴频率处的F_y高频幅值的大小关系为普通铣刀>沟槽阵列铣刀>V型阵列铣刀;采用微织构铣刀加工的表面,其表面粗糙度比普通铣刀的小,且V型阵列铣刀加工工件的表面质量最好.研究结果将为压铸铝合金精密铣削提供理论依据.

关键词: 表面微织构, 压铸铝合金铣削, 铣削力, 频谱特性, 表面粗糙度

Abstract:

Aimed at the problems of low processing accuracy and surface quality of die-casting aluminum alloy under the influence of cutting force, a method of using surface micro-textured milling cutter with groove and V-shaped arrays on the rake face was proposed. The variations of milling forces were monitored and analyzed by using tri-direction-force transducer, and the spectrum characteristics of the y-direction milling force (F_y) was emphatically analyzed. The spectrum analysis diagrams of F_y of three different milling cutters were obtained by fast Fourier transform. The milling performance of the micro-textured milling cutters was evaluated by surface topography and surface roughness. The results show that compared with the average values in the x, y, and z directions of the conventional milling cutter, the values of the groove micro-structured milling cutter are reduced by 3.8%, 0.29%, and 11.7%, while those of the V-shaped micro-structured milling cutter are reduced by 8.5%, 14.3%, and 12.4%. The relationship between high frequency amplitudes of F_y at 6 times spindle frequency are proposed as conventional milling cutter>groove arrays milling cutter>V-shaped arrays milling cutter. Compared with the conventional milling cutter, the surface roughness is decreased when using micro-textured milling cutters, and the surface quality of the workpiece processed by the V-array milling cutter is the best. This paper will provide a theoretical basis for precision milling of die-cast aluminum alloys.

Key words: surface micro-texture, milling die-casting aluminum alloy, milling force, spectrum characteristics, surface roughness

中图分类号:

TG54
TG714

何利华, 潘建峰, 倪敬, 冯凯, 崔智. 压铸铝合金用铣刀表面微织构及切削特性研究[J]. 上海交通大学学报, 2021, 55(6): 750-756.

HE Lihua, PAN Jianfeng, NI Jing, FENG Kai, CUI Zhi. Surface Micro-Texture and Cutting Characteristics of Milling Cutter for Die-Casting Aluminum Alloy[J]. Journal of Shanghai Jiao Tong University, 2021, 55(6): 750-756.

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类型	F_x/N	ΔF_x/%	F_y/N	ΔF_y/%	F_z/N	ΔF_z/%
普通铣刀	79.93	—	24.52	—	27.42	—
沟槽阵列铣刀	76.89	3.8	24.44	0.29	24.20	11.7
V型阵列铣刀	73.11	8.5	20.99	14.3	24.02	12.4

压铸铝合金用铣刀表面微织构及切削特性研究

Surface Micro-Texture and Cutting Characteristics of Milling Cutter for Die-Casting Aluminum Alloy

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