Effects of ultrasonic vibration on machining accuracy in microdrilling

Hiromichi Onikura, Osamu Ohnishi, Jinhai Feng, Toshikazu Kanda, Takahiro Morita, Urs Bopp

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)


    The purposes of the present paper are to investigate the effects of ultrasonic vibration on machining accuracy of duralumin and to clarify the mechanisms for the improvement of machining accuracy in microdrilling. Ultrasonic vibration of 40 kHz considerably reduces the friction on the rake face, makes chips thinner and then decreases cutting forces. This decrease in cutting forces, especially the mean radial force, leads to the improvement of cutting accuracy, i. e. smaller hole oversize, a little better roundness at hole entrance and smaller displacement of hole center under ultrasonic vibration. The thinner chip increases the velocity of chip flow and results in better characteristics of chip disposal and less tendency of drill breakage.

    Original languageEnglish
    Pages (from-to)210-216
    Number of pages7
    JournalInternational Journal of the Japan Society for Precision Engineering
    Issue number3
    Publication statusPublished - Sept 1996

    All Science Journal Classification (ASJC) codes

    • General Engineering


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