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Advanced burr-free hole machining using newly developed micro compound tool

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Abstract

This paper focuses on the efforts for minimization of burr formation and improvement of hole surface roughness following machining of micro through-hole. The main idea deals with the development of a micro compound tool consisting of two different parts: a micro flat drill (drilling part) and a micro diamond-electroplated-tool (grinding part). The finishing diameter of each drilling and grinding parts are 90 µm and 100 µm, respectively. Furthermore, the study also focuses on the effect of entrance taper of grinding part, drill diameter and web thickness. The used wokrpiece was made of stainless steel (SUS304) with a thickness of 100 µm. From the experiment, it was found that the tool having entrance taper, drill diameter and web thickness of 10/100, 90 µm and 50 µm, respectively, shows the best performance in hole machining especially in burr minimization. Furthermore, the developed micro compound tool showed significant better surface roughness and burr minimization compared to usual micro twist drill and micro flat drill.

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Authors and Affiliations

  1. Solution Research Laboratory, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, Japan, 152-8550

    Muhammad Aziz

  2. Department of Intelligent Machinery and Systems, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Japan, 819-0395

    Osamu Ohnishi & Hiromichi Onikura

Authors
  1. Muhammad Aziz
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  2. Osamu Ohnishi
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  3. Hiromichi Onikura
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Correspondence to Muhammad Aziz.

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Aziz, M., Ohnishi, O. & Onikura, H. Advanced burr-free hole machining using newly developed micro compound tool. Int. J. Precis. Eng. Manuf. 13, 947–953 (2012). https://doi.org/10.1007/s12541-012-0123-2

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  • DOI: https://doi.org/10.1007/s12541-012-0123-2

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