Ring tool unit, method for manufacturing the same, sleeve, and mandrel

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United States of America Patent

PATENT NO 9895758
SERIAL NO

15126185

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Importance

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Abstract

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An object is to prolong the life of a ring tool, and improve the productivity of a welded pipe. A ring tool unit is held in a downstream-side end portion of a mandrel to be inserted into a welded pipe currently being manufactured from the upstream side of a welding position, and is used as a cutting tool for continuously cutting a bead produced on the inner surface of the welded pipe, wherein the ring tool unit is formed by fitting a ring tool having a ring-like blade in a sleeve having a circular hole for holding the outer circumference of the ring tool.

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Patent Owner(s)

Patent OwnerAddress
NAKATA MANUFACTURING CO LTDOSAKA-SHI OSAKA 532-0027

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miura, Takamitsu Osaka, JP 2 19
Nakano, Tomoyasu Osaka, JP 20 138
Nakata, Mitsuru Osaka, JP 22 5076
Sato, Takeyuki Osaka, JP 9 3
Wang, Feizhou Osaka, JP 19 30

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