Roundness error evaluation of cold embossed hole based on profile measurement technique

Roundness is one of the main features to ensure the perfect mating of assembled parts. A coordinate measurement machine is commonly utilized for measurement, but the use of this machine is limited because of the small size and characteristics of the hole. This study aims to evaluate the quality of an AA6061 cold embossing hole. A simple approach based on profile deviation is proposed to evaluate the roundness of the hole. The profile is obtained with the use of InfiniteFocus Alicona system, a commercially available 3D surface measurement technique. Several specimens with various depths and diameters are prepared for measurement. Results are validated with the commercial Mitutoyo roundtest machine.

[1]  Zahurin Samad,et al.  A novel manufacturing method of propeller for autonomous underwater vehicle (auv) using cold forging process , 2012 .

[2]  Shi Zhaoyao,et al.  Development and application of convex hull in the assessment of roundness error , 2008 .

[3]  Xiulan Wen,et al.  An effective genetic algorithm for circularity error unified evaluation , 2006 .

[4]  Te-Hsiu Sun,et al.  Applying particle swarm optimization algorithm to roundness measurement , 2009, Expert Syst. Appl..

[5]  Jay F. Tu,et al.  Roundness modeling of machined parts for tolerance analysis , 2001 .

[6]  Zheng Yu-jun,et al.  A Method for Roundness Error Evaluation Based on Area Hunting , 2008 .

[7]  M. S. Shunmugam,et al.  Evaluation of circularity from coordinate and form data using computational geometric techniques , 2000 .

[8]  Mu-Chen Chen,et al.  Roundness measurements for discontinuous perimeters via machine visions , 2002, Comput. Ind..

[9]  Zhufeng Yue,et al.  The effect of holes quality on fatigue life of open hole , 2007 .

[10]  R. Leach.  Optical measurement of surface topography , 2011 .

[11]  Lin Hua,et al.  Numerical simulation and experimental study on geometry variations and process control method of vertical hot ring rolling , 2014 .

[12]  M Frennberg,et al.  International comparison of high-accuracy roundness measurements , 1996 .

[13]  Chyn-Shu Deng,et al.  Hole roundness in deep-hole drilling as analysed by Taguchi methods , 2005 .

[15]  Lianggang Guo,et al.  Research on the effects of coordinate deformation on radial-axial ring rolling process by FE simulation based on in-process control , 2014 .

[16]  P. H. Hopchev,et al.  Effects of roundness of laser formed film cooling holes on fatigue life of nickel based single crystal , 2014 .

[17]  Franz Helmli,et al.  Focus Variation Instruments , 2011 .

[18]  Utpal Roy,et al.  Development and application of Voronoi diagrams in the assessment of roundness error in an industrial environment , 1994 .

[19]  R. Danzl,et al.  Focus Variation – a Robust Technology for High Resolution Optical 3D Surface Metrology , 2011 .

[20]  Wei Gao,et al.  A new multiprobe method of roundness measurements , 1996 .

[21]  Zhaoyao Shi,et al.  The relationship between the minimum zone circle and the maximum inscribed circle and the minimum circumscribed circle , 2009 .

[22]  Dong Hwan Kim,et al.  Real time monitoring and diagnosis system development in turning through measuring a roundness error based on three-point method , 2005 .

[23]  E. S. Gadelmawla,et al.  Simple and efficient algorithms for roundness evaluation from the coordinate measurement data , 2010 .

[24]  S. M. Sapuan,et al.  Numerical investigation of geometrical defect in cold forging of an AUV blade pin head , 2013 .

[25]  S. Y. Luo,et al.  Effect of the geometry and the surface treatment of punching tools on the tool life and wear conditions in the piercing of thick steel plate , 1999 .

[26]  K. Kim,et al.  Assessing Roundness Errors Using Discrete Voronoi Diagrams , 2000 .