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Micromachines 2016, 7(6), 105; doi:10.3390/mi7060105

Fabrication of Dish-Shaped Micro Parts by Laser Indirect Shocking Compound Process

School of Mechanical Engineering, Jiangsu University, Zhenjiang 212000, China
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Author to whom correspondence should be addressed.
Academic Editor: Maria Farsari
Received: 6 April 2016 / Revised: 5 June 2016 / Accepted: 14 June 2016 / Published: 20 June 2016
(This article belongs to the Collection Laser Micromachining and Microfabrication)
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Abstract

Compound process technology has been investigated for many years on a macro scale, but only a few studies can be found on a micro scale due to the difficulties in tool manufacturing, parts transporting and punch-die alignment. In this paper, a novel technology of combining the laser shock wave and soft punch was introduced to fabricate the dish-shaped micro-parts on copper to solve these difficulties. This compound process includes deep drawing, punching and blanking and these processes can be completed almost at the same time because the duration time of laser is quite short, so the precision of the micro-parts can be ensured. A reasonable laser energy of 1550 mJ made the morphology, depth of deformation, dimensional accuracy and surface roughness achieve their best results when the thickness of the soft punches was 200 μm. In addition, thicker soft punches may hinder the compound process due to the action of unloading waves based on the elastic wave theory. So, the greatest thickness of the soft punches was 200 μm. View Full-Text
Keywords: laser compound process; dish-shape micro parts; soft punch; deep drawing; punching; blanking laser compound process; dish-shape micro parts; soft punch; deep drawing; punching; blanking
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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. (CC BY 4.0).

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MDPI and ACS Style

Liu, H.; Sha, C.; Shen, Z.; Li, L.; Gao, S.; Li, C.; Sun, X.; Wang, X. Fabrication of Dish-Shaped Micro Parts by Laser Indirect Shocking Compound Process. Micromachines 2016, 7, 105.

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