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Experimental studies on tool wear in μ-RUM process

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Abstract

Tool wear in micro-manufacturing process is of paramount importance to meet stringent design requirements of workpiece in a cost-effective manner. In present work, tool wear in micro-rotary ultrasonic machining (μ-RUM) has been investigated for Ø300-μm peck drilling operation. Two sets of experiments have been conducted using electroplated hollow diamond tool and borosilicate glass as workpiece to evaluate the effects of μ-RUM parameters on tool wear. In the first set, the effects of tool-based parameters like grain size and thickness of hollow tool have been studied using full factorial design and optimum tool design was obtained. In second set, the effects of process-related parameters like spindle speed, distance traverse in each stroke, table feed rate, vibration amplitude, and vibration frequency on tool wear were studied using central rotatable composite design with optimum tool designed in first step. Analysis of variance has been used to study the significance of μ-RUM factors on tool wear. After investigation and analysis of the data, it has been concluded that thickness and grain size of hollow diamond tool had an inverse effect on tool wear. Tool with 100-μm thickness and 30-μm grain size was best possible tool for minimum tool wear. It has also been found that process parameters like traverse in each stroke, vibration amplitude, vibration frequency, and spindle speed have affected tool wear, but vibration frequency was most influencing process parameter and resulted in rapid tool wear if not selected properly.

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Authors and Affiliations

  1. Advance Manufacturing Facility/Internal Fabrication facility/Material Mechanical Entity, Vikram Sarabhai Space Centre, Indian Space Research Organization, Trivandrum, Thiruvananthapuram, Kerala, India

    Anil Kumar Jain

  2. Department of Mech Eng., IIT Delhi, India, IIT Delhi, India

    Pulak M. Pandey

Authors
  1. Anil Kumar Jain
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  2. Pulak M. Pandey
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Correspondence to Anil Kumar Jain.

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Jain, A.K., Pandey, P.M. Experimental studies on tool wear in μ-RUM process. Int J Adv Manuf Technol 85, 2125–2138 (2016). https://doi.org/10.1007/s00170-015-8248-y

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  • DOI: https://doi.org/10.1007/s00170-015-8248-y

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