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Compact Module for Maskless and Simultaneous 2D Laser Chemical Machining

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Part of the book series: Lecture Notes in Production Engineering ((LNPE))

Abstract

In the course of miniaturisation the demand of novel manufacturing methods and tailored machine tools is ever-increasing. For manufacturing metallic micro-components the laser chemical machining presents a promising approach for a localised and smooth material processing. Its applied low laser power densities (<100 kW/cm2) open up the opportunity of using optical diffractive elements for a maskless beam shaping. In this work, Digital Micromirror Device technology (DMD) and laser processing are combined for the first time in a laser chemical machining procedure. A novel compact machining module is presented, which enables large angle illumination of DMD with diffraction efficiencies up to 9.6%. It is shown that the direct amplitude modulation is affected by optical distortions and inhomogeneous intensity profiles. As result, the material removal cannot be allocated to the related shaping. To overcome these limitations, an optical modelling of the DMD-pattern was performed taking into account the device tilting. Thus a highly accurate beam shaping has been achieved.

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Correspondence to Hamza Messaoudi .

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Messaoudi, H., Vollertsen, F. (2017). Compact Module for Maskless and Simultaneous 2D Laser Chemical Machining. In: Wulfsberg, J., Sanders, A. (eds) Small Machine Tools for Small Workpieces. Lecture Notes in Production Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-49269-8_4

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  • DOI: https://doi.org/10.1007/978-3-319-49269-8_4

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-49267-4

  • Online ISBN: 978-3-319-49269-8

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