微细电火花线切割表面三维粗糙度的结构性参数

doi:10.13229/j.cnki.jdxbgxb201503024

吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (3): 851-856.doi: 10.13229/j.cnki.jdxbgxb201503024

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Structural parameters of 3D roughness for micro wire electrical discharge machining surface

GUO Li-bin¹, ZHANG Bin¹, CUI Hai^{1, 2}, ZHANG Zhi-hang³

1.College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China;
2.Engineering Training Center, Harbin Engineering University, Harbin 150001, China;
3.Department of Mechanical Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China

Received:2013-08-22 Online:2015-05-01 Published:2015-05-01

Abstract

Abstract: The 3D microtopography of Micro Wire Electrical Discharge Machining (MWEM) surface is characterized by isotropy. The methods of roundness and second order of principal section are introduced to describe the complexity degree of MWEDM surface texture more precisely and simplify the calculation `process. The Gaussian curvature is adopted instead of zenith curvature to characterize the concave convex character of the surface, which can make the calculation not being limited by the measuring direction and improve the calculation precision. The surface geometry elements are cut apart by watershed method to simplify the characterization parameters and realize accurate counting of the surface peaks. It shows that, for estimating the isotropy MWEDM surface, the improved structural parameters of 3D roughness are more simplified and the characterizations are more precise.

Key words: mechanical manufacturing and automation, micro wire electrical discharge machining, surface micro-topography, 3D structural characters, 3D roughness

CLC Number:

TG661

GUO Li-bin, ZHANG Bin, CUI Hai, ZHANG Zhi-hang. Structural parameters of 3D roughness for micro wire electrical discharge machining surface[J].吉林大学学报(工学版), 2015, 45(3): 851-856.

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