A method for quick assembly of rolling mill back-up rolls

Abstract

The invention discloses a fast assembling method for a supporting roll of a rolling mill and belongs to the technical field of rolling mill equipment maintenance. A radial positioning principle is adopted, any end point of the roll diameter part of the supporting roll of the rolling mill serves as a positioning point, the positioning point is positioned through radial projection positioning, and the positioning point is located on a radial; and a same-side end point of the outer hole diameter part, parallel to the roll diameter part defining the positioning point of the supporting roll of the rolling mill, of a bearing hole of a bearing base serves as a tangent line point, the tangent line point is tangent to the radial transmitted by a radial transmitting device all the time, it is ensured that the central axis of the supporting roll of the rolling mill coincides with the central axis of the bearing hole of the bearing base all the time, and therefore the position relation between a roll diameter inner sleeve of the supporting roll of the rolling mill and a bearing in the bearing base is accurately determined, and assembling is completed rapidly and accurately. According to the fast assembling method for the supporting roll of the rolling mill, fast assembling of the supporting roll of the rolling mill and the bearing base is achieved, the phenomena that the bearing is knocked to be damaged and the roll diameter inner sleeve is scratched in the assembling process of the supporting roll of the rolling mill are effectively avoided, the working efficiency is improved, the service life of the roll diameter inner sleeve of the supporting roll of the rolling mill and the bearing is prolonged, and cost is reduced.

Description

technical field [0001] The invention relates to a quick assembly method for a backup roll of a rolling mill, and belongs to the technical field of rolling mill equipment maintenance. Background technique [0002] As the key equipment in cold rolling production, the back-up rolls of the rolling mill need to be replaced periodically. After the back-up rolls of the rolling mill are replaced, the bearings need to be disassembled to complete the periodic cleaning of the bearings. The back-up rolls of the rolling mill are ground to achieve the Surface process requirements; after the bearing is cleaned, it is assembled in the bearing hole of the bearing seat. During the reassembly process of the rolling mill back-up roll and the bearing seat, the bearing seat and the roll diameter of the rolling mill back-up roll need to be positioned to complete the assembly; The fit clearance of the bearing in the bearing seat is small, and there is no uniform position standard for the inner slee...

AI Technical Summary

Problems solved by technology

[0002] As the key equipment in cold rolling production, the back-up rolls of the rolling mill need to be replaced periodically. After the back-up rolls of the rolling mill are replaced, the bearings need to be disassembled to complete the periodic cleaning of the bearings. The back-up rolls of the rolling mill are ground to achieve the Surface process requirements; after the bearing is cleaned, it is assembled in the bearing hole of the bearing seat. During the reassembly process of the rolling mill back-up roll and the bearing seat, the bearing seat and the roll diameter of the rolling mill back-up roll need to be positioned to complete the assembly; The fit clearance of the bearing in the bearing seat is small, and there is no uniform position standard for the inner sleeve of the roll diameter and the bearing. Only relying on the visual inspection of the fit clearance between the two for assembly, it is impossible to accurately determine the relative positional relationship of the assembly parts. The entire assembly process not only consumes It is time-consuming and labor-intensive, and the phenomenon of bearing damage and inner sleeve scratches often occurs due to inaccurate alignment, which affects the service life of the inner sleeve of the roll diameter and the bearing, and will cause instability in the cold rolling production process, resulting in extreme cold rolling. big economic loss

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