微切削加工Al7050-T7451过程切屑形貌及尺度效应研究

山东大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (3): 148-153.

微切削加工Al7050-T7451过程切屑形貌及尺度效应研究

周军^1,2,李剑峰^1,2,孙杰^1,2

1. 山东大学机械工程学院, 山东济南 250061;
2. 高效洁净机械制造教育部重点实验室(山东大学), 山东济南 250061

收稿日期:2009-10-20 出版日期:2010-06-16 发布日期:2009-10-20
作者简介:周军(1982-), 男,山东博兴人,博士研究生,主要研究方向为金属微切削加工机理及其过程仿真. E-mail:zhoujun19820622@gmail.com
基金资助:
国家重大科技专项资助项目(2009ZX04012-032-01)

Experimental study on chip geometry and size effect in micro-cutting aluminum 7050-T7451

ZHOU Jun1,2, LI Jian-feng1,2, SUN Jie1,2

1. School of Mechanical Engineering, Shandong Univesity, Jinan 250061, China; 2. Key Laboratory of High Efficiency and
Clean Mechanical Manufacture (Shandong Univerisity), Ministry of Education, Jinan 250061, China

Received:2009-10-20 Online:2010-06-16 Published:2009-10-20

摘要/Abstract

关键词: 微切削, 切屑形貌, 切削力, 尺度效应

Abstract:

The micro-scale machining characteristics of a non-ferrous structural alloy aluminum 7050-T7451 were investigated through a series of orthogonal cutting experiments. A carbide tool was used and the effect of cutting edge radius was considered. The workpiece was prepared as thin wafers so that orthogonal turning experiments could be conducted on the NC milling center. Different cutting speeds and various depths of cut were adopted in the single factor cutting experiments. Chips under different cutting parameters were collected for the investigation of chip geometry. The effect of cutting parameters and cutting edge radius on chip thickness and curls were investigated. The cutting forces were measured with the Kistler 9257B dynamometer. The characteristic of cutting forces and thrust forces were analyzed via considering the effect of cutting edge radius and the effects of cutting speed and depth of cut on cutting forces and size effect in orthogonal micro-scale cutting of Al 7075-T7451 were presented.

Key words: micro cutting, chip morphology, cutting forces, size effect

周军1,2,李剑峰1,2,孙杰1,2. 微切削加工Al7050-T7451过程切屑形貌及尺度效应研究[J]. 山东大学学报(工学版), 2010, 40(3): 148-153.

ZHOU Jun1,2, LI Jian-feng1,2, SUN Jie1,2. Experimental study on chip geometry and size effect in micro-cutting aluminum 7050-T7451[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(3): 148-153.

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