Method for rolling conical barrel through plate rolling machine

Abstract

The invention discloses a method for rolling a conical barrel through a plate rolling machine. A cone rolling tool is arranged on the inner side of a turnover rack or the inner side of a fixed rack, and comprises a support, two sets of friction limiting devices are arranged on the support, and the structures of the two friction limiting devices are arranged in an axial symmetry mode. Each friction limiting device comprises a supporting seat fixedly connected with the support, a pin shaft, a hinge supporting shaft and a rolling sleeve. Supporting shafts are arranged on the upper portions of the hinge supporting shafts, locating pull arms are arranged on the lower portions of the hinge supporting shafts, and mounting holes are formed in the middles of the hinge supporting shafts. The locating pull arms are fixedly connected with the supporting seats through pins, the hinge supporting shafts are rotatably connected to the pin shafts, the two ends of each pin shaft are respectively and fixedly arranged on the corresponding supporting seat, and the rolling sleeves are fixed to the supporting shafts. When a workpiece is rolled on the plate rolling machine, the outer circle faces of the rolling sleeves are close to the small end face of the rolled conical barrel. The method has the advantages that the operation is easy and convenient, work efficiency is high, and the precision for rolling the conical barrel is high. The method is especially suitable for rolling the large-diameter thin-walled conical barrel with the conical angle larger than 15 degrees on the plate rolling machine.

Description

Technical field [0001] The invention relates to a method for rolling a cone, in particular to a method for rolling a cone using a plate rolling machine. Background technique [0002] At present, the production of wind turbine towers requires a dedicated four-roller plate bending machine, which is expensive. In the case of the existing three-roller plate rolling machine, the winding of the fan tower is very difficult. The operator needs to adjust the angle of the upper roller and master the downward pressure of the upper roller, and the work efficiency is low. The concentricity and the amount of wrong side of the tube and the mouth are large. Due to the thin wall thickness, a crane needs to be lifted during the rolling process. The crane is occupied for a long time, and due to its own weight, the roundness tolerance after rolling is relatively large, which increases the difficulty of rounding. Summary of the invention [0003] In order to solve the technical problems existing in ...

AI Technical Summary

Problems solved by technology

[0002] At present, the production of wind turbine towers requires a special four-roller plate rolling machine, which is expensive

In the case of the existing three-roll plate rolling machine, it is very difficult to roll the fan tower. The concentricity of the big and small openings of the cylinder and the amount of misalignment are relatively large

Due to the thin wall thickness, a crane is required to lift one end during the rolling process. The crane is occupied for a long time, and due to its own weight, the roundness tolerance after rolling is relatively large, which increases the difficulty of circle calibration.

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