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Sensors 2008, 8(1), 211-221; doi:10.3390/s8010211
Article

Application of Design of Experiment Method for Thrust Force Minimization in Step-feed Micro Drilling

1,* , 1
, 2
 and 3
Received: 4 December 2007; Accepted: 8 January 2008 / Published: 21 January 2008
(This article belongs to the Special Issue Modeling, Testing and Reliability Issues in MEMS Engineering)
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Abstract: Micro drilled holes are utilized in many of today’s fabrication processes.Precision production processes in industries are trending toward the use of smaller holeswith higher aspect ratios, and higher speed operation for micro deep hole drilling. However,undesirable characteristics related to micro drilling such as small signal-to-noise ratios,wandering drill motion, high aspect ratio, and excessive cutting forces can be observedwhen cutting depth increases. In this study, the authors attempt to minimize the thrustforces in the step-feed micro drilling process by application of the DOE (Design ofExperiment) method. Taking into account the drilling thrust, three cutting parameters,feedrate, step-feed, and cutting speed, are optimized based on the DOE method. Forexperimental studies, an orthogonal array L27(313) is generated and ANOVA (Analysis ofVariance) is carried out. Based on the results it is determined that the sequence of factorsaffecting drilling thrusts corresponds to feedrate, step-feed, and spindle rpm. Acombination of optimal drilling conditions is also identified. In particular, it is found in thisstudy that the feedrate is the most important factor for micro drilling thrust minimization.
Keywords: Step-feed micro drilling process; Thrust force; Cutting condition optimization; DOE (Design of Experiment); ANOVA (Analysis of Variance). Step-feed micro drilling process; Thrust force; Cutting condition optimization; DOE (Design of Experiment); ANOVA (Analysis of Variance).
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Kim, D.-W.; Cho, M.-W.; Seo, T.-I.; Lee, E.-S. Application of Design of Experiment Method for Thrust Force Minimization in Step-feed Micro Drilling. Sensors 2008, 8, 211-221.

AMA Style

Kim D-W, Cho M-W, Seo T-I, Lee E-S. Application of Design of Experiment Method for Thrust Force Minimization in Step-feed Micro Drilling. Sensors. 2008; 8(1):211-221.

Chicago/Turabian Style

Kim, Dong-Woo; Cho, Myeong-Woo; Seo, Tae-il; Lee, Eung-Sug. 2008. "Application of Design of Experiment Method for Thrust Force Minimization in Step-feed Micro Drilling." Sensors 8, no. 1: 211-221.


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