| 摘要 |
PURPOSE:To efficiently manufacture fluid passage parts with a low cost by combining a groove working roller provided with a groove working part in the peripheral direction of the surface of a roller, and the flat surface working roller of a large diameter, and bringing a metallic thick plate to roller forming. CONSTITUTION:a groove working part 4a to which cross-sectional shape is the same as that of a fluid passage is provided in the peripheral direction of the surface of a groove working roller 4. On the other hand, the diameter D of a flat surface working roller 5 is formed so as to be larger than the diameter (d) of the groove working roller 4. Both working rollers 4, 5 are combined, rotated in the directions as indicated with arrows 9, 10, respectively, and brought to roller forming by inserting a metallic thick plate 7 between them. As for the metallic thick pate 7, it is desirable that the tapered part 7a is formed in the inserting end so that it can be inserted easily. Also, it is desirable that a gap between both working rollers 4, 5 is adjusted by a groove depth measuring instrument 6 and a control unit 8. In such a way, by forming a groove 1a on one face 7b of the metallic thick plate 7, fluid passage parts are obtained.
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