Work Roll Polishing Assembly for Uniform Metal Leveler Finishing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for polishing work rolls in metal sheet or plate levelers are inefficient, unsafe, and lack uniformity, leading to inconsistencies in the quality of the metal sheets or plates produced.
Innovation Solution
A polishing apparatus with multiple polishers on upper and lower platforms, equipped with expandable elements such as air bags, allows for simultaneous polishing of all work rolls during rotation, ensuring consistent contact and pressure distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual hand grinder polishing is used by operators, then the work rolls can be polished, but operator safety is compromised and polishing uniformity varies
Solution Approach 1:
The work rolls polish themselves by rotating and contacting the stationary polishing pads. The system uses the inherent rotation of the work rolls during leveler operation to perform the polishing action, eliminating the need for manual intervention and ensuring consistent, safe polishing without operator exposure to hazards
Solution Approach 2:
The manual mechanical hand grinder operation is replaced with a stationary mechanical polishing pad system. The polishing action is achieved through the interaction between the rotating work roll surface and the stationary pad, substituting the dangerous manual grinding process with an automated mechanical system
2Manufacturing precision
If manual polishing is performed, then work rolls can be cleaned, but polishing consistency and quality uniformity deteriorate
Solution Approach 1:
The system eliminates operator dependency by using the work roll's own rotation to bring the entire surface into contact with the stationary polishing pads. This self-service mechanism ensures every point on the work roll surface receives uniform polishing contact without variation in operator pressure or technique
Solution Approach 2:
The polishing system is divided into multiple stationary pads positioned at different locations around the work roll circumference. Each pad polishes a specific section of the work roll surface, and the segmentation allows comprehensive coverage while maintaining uniform polishing conditions across all sections
3Productivity
If the leveler is braced in open position for polishing, then operator accessibility is improved, but polishing efficiency and productivity decrease
Solution Approach 1:
The polishing action occurs continuously during the normal operation of the leveler. The work rolls rotate continuously as they process metal sheets, and the polishing pads continuously contact the rotating surfaces, eliminating the need to stop or brace the leveler for polishing operations
Solution Approach 2:
The polishing pads are pre-positioned in stationary locations around the work roll path before the leveler operates. The work roll rotation automatically brings all surfaces into contact with the pre-positioned pads, eliminating the need for complex leveler bracing or positioning arrangements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus enables safe, efficient, and uniform polishing of work rolls, enhancing the quality of metal sheets or plates by reducing scratches and improving surface finish.
Implementation Method 1
expandable elements such as air bags, allows for simultaneous polishing of all work rolls during rotation, ensuring consistent contact and pressure distribution
Implementation Method 2
each polisher comprising a rigid concave pan, resilient liner and abrasive material, the abrasive material shaped to conform to the outer surface of the corresponding work roll
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An apparatus and method for safely and efficiently polishing the work rolls of a metal sheet or plate leveler. The apparatus includes a support and one or more polisher assemblies to be inserted between the upper and lower work rolls of the leveler, for simultaneously polishing the upper and/or lower work rolls of the leveler during the rotation of the work rolls.