Calibration tool and method for rolling roll gap

Abstract

The invention discloses a calibrating tool and method for spacing among rotary-expanding rollers. The tool comprises a mould base, an elastic part, a slide block mechanism and a lifting ruler, whereina slide block mounting hole and a lifting hole are separately formed in the two sides of the mould base; the elastic part is arranged in the corresponding slide block mounting hole; one end of the slide block mechanism is limited in the corresponding slide block mounting hole, and the other end of the slide block mechanism is positioned outside the slide block mounting hole and abuts against thecorresponding roller; the slide block mechanism comprises a variable-diameter section; the bottom end of the lifting hole communicates with the corresponding slide block mounting hole; and the liftingruler is positioned in the corresponding lifting hole, and the bottom end of the lifting ruler abuts against the variable-diameter section, and the lifting ruler is driven by the variable-diameter section to lift. According to the calibrating tool and method for spacing among rotary-expanding rollers disclosed by the invention, the slide block mechanism moves along with the roller, so that the lifting ruler lifts along with action of the slide block mechanism; and readings of the lifting ruler are observed, so that the practical position of the roller can be obtained; and the roller spacing is calibrated, so that consumption of labor power is reduced, and calibrating precision can be improved.

Description

technical field [0001] The invention relates to the technical field of steel pipe forming, in particular to a roll gap calibration tool and method for rotary expansion rolls. Background technique [0002] On the steel pipe hot rolling line, the solid pipe billet undergoes the piercing and diameter expansion processes in sequence to form a seamless steel pipe. The diameter expansion is carried out by the rotary expansion machine, the main body of the rotary expansion machine is horizontal, and two sets of disc rotary expansion rolls are arranged on the left and right. By adjusting the motor to drive the turbine and worm to drive the left and right rolls to move, the adjustment of the roll distance is realized. The adjustment of the spacing of the rotary expansion rolls needs to be set strictly in accordance with the process requirements, which will directly affect the quality of the finished steel pipe. The adjustment of roll spacing is based on accurate calibration, so it ...

AI Technical Summary

Problems solved by technology

Due to the large uncertainty of manual measurement and poor repeatability, the calibration accuracy of the rotary rolling roll gap is poor, which in turn affects the quality of the finished pipe

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