Attempts to fabricate micro injection molding tools and assemble molded micro parts on same EDM machine |
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Authors: | Kazuki Oshima Masanori Kunieda |
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Affiliation: | Department of Precision Engineering, The University of Tokyo, Japan |
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Abstract: | An EDM method for manufacturing plastic micro gear pumps is proposed. Micro gates and cavities for mating gears are machined by EDM in both sides of a stainless steel foil, respectively. The foil is then transferred to an injection molding machine, and fixed to a mold to form mating gears by injection molding. The mating gears formed on the foils are then re-positioned on the EDM machine, released from the foil, and placed in a second foil pre-machined by EDM for the pump housing, using an ejector pin fabricated by reshaping the tool electrode used to machine the two foils. |
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Keywords: | Electrical discharge machining Assembly Micro injection molding |
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