Spot Polishing Assembly for Metal Leveler Work Roll Uniformity
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Solution Overview
Problem
Conventional methods for polishing and cleaning work rolls in metal levelers are inefficient and pose safety risks due to manual operation and lack of uniformity, leading to variations in the quality of polished metal sheets or plates.
Innovation Solution
An apparatus with a spot polisher frame, airbags, and polisher arms with abrasive surfaces that can be inflated and deflated to position polishers radially for localized polishing of work rolls, allowing for efficient and safe cleaning of specific areas on the rolls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual polishing with hand grinder is used, then the work rolls can be polished, but operator safety is compromised and polishing uniformity varies
Solution Approach 1:
The automated polishing apparatus performs the polishing function without requiring operator intervention inside the leveler. The system uses self-contained polishing heads with abrasive belts that automatically contact and polish the work rolls as they rotate, eliminating the need for manual operation and ensuring consistent results through automated control mechanisms.
Solution Approach 2:
The invention replaces the manual mechanical grinding operation with an automated mechanical polishing system. The apparatus uses powered polishing heads with abrasive belts driven by motors, substituting the operator's hand grinder with a controlled mechanical system that maintains constant polishing pressure and speed through automated mechanisms.
2Reliability
If automated cleaning with brushes or air bladders is used, then operator safety is improved, but localized polishing capability is reduced
Solution Approach 1:
The polishing apparatus is divided into multiple independent polishing heads, each capable of being positioned independently to polish specific locations on the work rolls. Each polishing head can be activated or deactivated separately, allowing selective polishing of different roll surfaces while maintaining automated safety benefits.
Solution Approach 2:
The polishing heads are mounted on movable arms or positioning mechanisms that allow dynamic adjustment of their positions relative to the rotating work rolls. This enables the system to adapt to different polishing requirements, targeting specific areas on the rolls while maintaining automated operation and operator safety.
3Manufacturing precision
If full automated polishing system is implemented, then polishing consistency is improved, but device complexity increases
Solution Approach 1:
The polishing apparatus is designed to polish both upper and lower work rolls using similar polishing head mechanisms, making the system multi-functional. The same basic polishing head design can be applied to different roll positions, reducing overall system complexity while maintaining polishing consistency across all rolls.
Solution Approach 2:
The system uses identical or similar polishing head designs for different work rolls, copying the successful polishing mechanism across multiple locations. This standardization of components simplifies the overall device structure while ensuring uniform polishing quality across all rolls through replicated proven designs.
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 solution enables safe and efficient polishing of work rolls, ensuring consistent quality by allowing for targeted cleaning of specific areas, reducing operator risk and improving the uniformity of the polishing process.
Implementation Method 1
The airbag is configured to inflate and deflate with air. While the airbag is inflated with air, the polisher is at a first position, and while the airbag is deflated, the polisher is at a second position.
Data Source
AI summary
An apparatus for spot polishing the work rolls of a metal sheet or plate leveler having a series of upper work rolls and a series of lower work rolls. The apparatus includes an assembly comprising a spot polisher frame, an airbag or other position translation element, and a polisher, including an abrasive surface, configured to radially polish only a portion of an upper or lower work roll. The apparatus further includes a polisher arm, to which the abrasive polisher is attached, at a first end of the polisher arm. The apparatus further includes a second end of the polisher arm hingedly connected to the spot polisher frame so as to enable the repositioning of the abrasive surface between a polishing and non-polishing orientation.