| 摘要 |
PURPOSE: A sizing mill device for manufacturing a seamless pipe is provided to improve the dimensional accuracy of a product by forming a first molded material secondly through a plurality of roller stands. CONSTITUTION: A sizing mill device for manufacturing a seamless pipe comprises a plurality of roller stands(311) and a plurality of drive motors. Each roller stand comprises a drive shaft(371) and first and second idle shafts(372,373) to which first to third sizing rollers(381-383) are respectively coupled. The first to third sizing rollers have a depressed arc shaped pressing surface. First and second drive connect gears(374,375) are installed to shafts of the first sizing roller installed in the drive shaft. First and second connect gears(376,377) engaging with the first and second drive connect gears are installed on the first and second idle shafts, respectively.
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