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Machine capability index evaluation of machining center

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Abstract

Recently, there has been an increasing need to produce more precise products, with only the smallest deviations from a defined target value. Machine capability is the ability of a machine tool to produce parts within the tolerance interval. Capability indices are a statistical way of describing how well a product is machined compared to defined target values and tolerances. Currently, there is no standardized way to acquire a machine capability value. This paper describes how machine capability indices are evaluated in machining centers. After the machining of specimens, straightness, roundness and positioning accuracy were measured using CMM(coordinate measuring machine). These measured values and defined tolerances were used to evaluate the machine capability index. It will be useful for the industry to have standardized ways to choose and calculate machine capability indices.

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Authors and Affiliations

  1. IT converged process R&D group, Korea Institute of Industrial Technology, Ansan, 426-791, Korea

    Won-Pyo Hong

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  1. Won-Pyo Hong
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Correspondence to Won-Pyo Hong.

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Recommended by Guest Editor Haedo Jeong

Won-Pyo Hong received B. S. (1993) degree in Precision Engineering and Mechatronics from KAIST, Korea. He received M. S. (1995) and Ph.D. (2001) degrees in Mechanical Engineering from KAIST. Dr. Hong is currently a Principal Researcher at the IT converged process R&D group of KITECH in Ansan, Korea.

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Hong, WP. Machine capability index evaluation of machining center. J Mech Sci Technol 27, 2905–2910 (2013). https://doi.org/10.1007/s12206-013-0801-8

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  • DOI: https://doi.org/10.1007/s12206-013-0801-8

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