Determination of the Optimal Ball Grinding Parameters for the Bio-Ceramics ZrO₂ on a PC-Based Multi-Axis CNC Engraving Machine

Abstract:

The objective of this study is to determine the optimal ball grinding parameters of the bio-ceramics ZrO2 by executing the Taguchi’s L18 orthogonal array experiment, analysis of variation (ANOVA), and the full factorial experiment on a PC-based multi-axis CNC engraving machine. The manufacture of a ZrO2 coping using the optimal ball grinding parameters has also been studied based on a tooth plaster model via reverse engineering technique. The 3D data points of a tooth plaster model were digitized by the developed on-machine measurement system on a PC-based CNC multi-axis engraving machine by integrating a circular triangulation laser probe with the machine and a PC. A CAD model of a coping could then be constructed by Pro/Engineer software, based on the digitized 3D data points. With the help of the PowerMill CAM software, the machining path of a coping has been simulated, and the correspondent NC codes have been generated to fabricate the ZrO2 coping using the determined optimal ball grinding parameters, on the CNC multi-axis engraving machine. The average surface roughness of Ra=0.49 um for the ground ZrO2 ceramics coping could be obtained by utilizing the optimal flat surface grinding parameters.

• Periodical: Advanced Materials Research (Volumes 83-86)
• Pages: 630-636
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.83-86.630
• Online since: December 2009
• Authors: Fang Jung Shiou, Jian Chi Fang
• Keywords: Bio-Ceramics ZrO₂, PC-Based Multi-Axis Engraving Machine, Reverse Engineering (RE), Taguchi’s Experimental Method

References

[1] VITA, Working instructions - Fabrication of the frame, Brochure B (VITA Zahnfabrik H. Rauter GmbH & Co. KG, Germany 1998).

[2] C. -C. A. Chen, N.A. Duffie, and W.C. Liu, A Finishing Model of Spherical Grinding Tools for Automated Surface Finishing Systems, The International Journal for Manufacturing Science & Production, Vol. 1 (1) (1997), p.17.

DOI: 10.1515/ijmsp.1997.1.1.17

[3] F.J. Shiou, C. -C. A. Chen and W. -T. Li, Automated surface finishing of plastic injection mold steel with spherical grinding and ball burnishing processes, The International Journal of Advanced Manufacturing Technology, Vol. 28 (2006), p.61.

DOI: 10.1007/s00170-004-2328-8

[4] A. Georgiadis and E. Sergeev, Dry high speed milling as a new machining technology of ceramics for biomedical and other applications, Ceramic Engineering and Science Proceedings, Proc. ICACC 26 (6), Cocoa Beach, FL, United States, (2005), p.41.

DOI: 10.1002/9780470291269.ch6

[5] M. S. Phadke, Quality engineering using robust design (Prentice-Hall, N. J. 1989).

[6] J. C. Fang, Research on reverse engineering and the optimal grinding parameters of a ZrO2 fullceramic coping on a multi-axis CNC engraving machine, Master thesis, National Taiwan University of Science and Technology, Taiwan (2004)(in Chinese).

[7] CHUAN LIANG, Technical handbook of CL-2MD multi-axis engraving machine (CHUAN LIANG Co. Ltd., Taiwan 2001).

[8] D.C. Montgomery, Design and Analysis of Experiments (Wiley, New York 1991).