| 摘要 |
PURPOSE: A method for manufacturing an oval gear of an oil meter is provided to maximize the accuracy of flow rate measurement by employing extrusion and anodizing of aluminium. CONSTITUTION: An oil meter comprises a main body, a measuring chamber, a plurality of shafts, and an oval gear. The main body has flanges on both ends which are coupled other pipes, respectively. The measuring chamber is formed inside the main body. The oval gear is coupled to the shafts and rotated together. A method for manufacturing the oval gear of the oil meter comprises steps of putting and heating an aluminum material in a mold(S1,S2), cutting the heated material coming out of the mold to correspond to the oval gear(S3), putting the cut material in an extrusion mold to extrude the material with an inner groove(S4), and anodizing the extruded oval gear(S5).
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