Grinding of microstructured functional surfaces: a novel strategy for dressing of microprofiles |
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Authors: | Berend Denkena Luis de Leon Bo Wang |
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Affiliation: | 1. Institute of Production Engineering and Machine Tools (IFW), Leibniz University Hannover, An der Universit?t 2, 30823, Garbsen, Germany
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Abstract: | For the grinding of microstructured functional surfaces called riblets, a novel dressing strategy using diamond profile rollers
was introduced for the generation of microprofiles on vitrified grinding wheels. The purpose of the present study is to grind
special designed riblets (microgrooves with a width of 40 μm and depth of 20 μm) on the surfaces of compressor blades with
the purpose of drag reduction in turbulent flow. It is currently not possible to achieve the desired microprofiles on grinding
wheels by profile dressing directly, due to the limited producible minimal profile tip geometry on the dressing roller. The
new profile dressing strategy using a profile shift kinematic allows generating microscopic roof profiles with an ideal sharp
profile tip. Compared with dressing using form rollers, the new dressing method using profile rollers offers a much higher
dressing efficiency and process stability at dressing microprofiles. |
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Keywords: | Production process Surface structuring Riblets |
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