Micro-scale six-roller mill with static stability

Abstract

The invention discloses a micro-scale six-roller mill with static stability. The six-roller mill is characterized in that parallel positioning devices are utilized to position the axial lines of six rollers of upper and lower bearing roller systems (2, 7), upper and lower middle roller systems (3, 6) and upper and lower working roller systems (4, 5) in the same vertical plane, i.e., the offset distance among the six rollers is zero. A micro-scale mechanism with static stability is arranged between the upper and lower bearing roller system (2, 7); and a micro-scale eccentric shaft mechanism with static stability is arranged between the middle roller operating side end cover (35) and middle roller axial moving mechanism of the upper and lower middle roller systems (3, 6). In the invention, a rolling mill roller system can maintain the equivalent static-stability condition of a mechanism under the condition of alternating the running state of no load during rolling intermission and high load during rolling, and the dynamic micro-scale crossing behavior of two rollers of bearing base kinematic pair with a backlash under an external interference moment is prevented so that the radial loadings of each line of rollers of the columnar rolling bearing are uniformly distributed to prolong the service life, therefore, the safe and stable operation of the six-roller mill can be realized under a heavy-load and high-speed condition.

Description

technical field [0001] The invention relates to the technical field of heavy metallurgical machinery, in particular to a micro-scale static deterministic six-high rolling mill. Background technique [0002] The roll system of the modern six-high rolling mill for rolling thin strips is a micro-scale statically indeterminate mechanism, which includes two aspects, 1) The unavoidable clearance required for the convenience of roll replacement and assembly and compensation for the thermal expansion of the bearing seat becomes the rolling condition The source of the static instability (instability) of the roll system, plus the "parallel positioning" offset setting between the axes of the six rolls cannot achieve the setting effect, and the initial crossing and dynamic micro-scale crossing phenomena will inevitably occur between the rolls, resulting in super large axial force And the deviation of the rolling support reaction force. The variation range of the micro-scale crossing an...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the disadvantages of micro-scale static indetermination existing in the roll system of the existing thin-strip six-high rolling mill, the present invention provides a micro-scale static six-high rolling mill

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