Glass Sheet Polishing Assembly with Multi-Zone Control
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Solution Overview
Problem
Existing glass processing methods face challenges in achieving uniformity and accuracy in polishing glass sheets due to variations in tools and surface imperfections, leading to distortions and curvature issues that result in objectionable displacement and double image effects.
Innovation Solution
A glass polishing assembly with a support and mounting system that includes a movable polishing assembly with a continuous indexing path, driven by multiple motors to ensure precise and automated polishing, along with a control system regulating RPM, pressure, and temperature, and featuring suction devices for secure mounting, allowing for efficient processing of large glass sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional grinding and polishing tools are used on glass surfaces, then surfacing can be performed, but variations in tool performance cause lack of uniformity in surface finish
Solution Approach 1:
The glass sheet is divided into multiple zones (first zone, second zone, third zone) with different polishing parameters. Each zone has customized polishing head rotation speeds, feed rates, and abrasive wheel configurations to address local surface variations and achieve uniform finish across the entire sheet.
Solution Approach 2:
Different regions of the glass sheet receive tailored polishing treatment. The first zone uses one set of polishing parameters, the second zone uses another set, and the third zone uses a third set. This local quality approach ensures that each area is optimized for its specific requirements, eliminating the uniformity problems caused by single-parameter tools.
2Manufacturing precision
If glass surfaces are ground and polished to remove distortions, then surface imperfections can be corrected, but curvature variations and marginal distortions still occur
Solution Approach 1:
The polishing system dynamically adjusts parameters during operation. The abrasive wheels rotate at variable speeds, the polishing heads move at controlled feed rates, and the system can adapt to real-time measurements of glass thickness and curvature. This dynamic control prevents the development of marginal distortions and maintains surface flatness.
Solution Approach 2:
The system incorporates measurement and control mechanisms that monitor the glass sheet during polishing. Based on feedback about surface conditions, curvature variations, and dimensional accuracy, the system automatically adjusts polishing parameters to correct deviations and maintain the desired flatness, preventing distortion rather than just removing it.
3Productivity
If abrasive slurry is fed to grinding and polishing tools, then polishing action can be maintained, but uniform feeding of the medium presents difficulties
Solution Approach 1:
The system uses pneumatic or hydraulic mechanisms to deliver abrasive slurry to the polishing zones. Fluid pressure and flow control systems ensure uniform distribution of slurry across all three zones, eliminating the feeding difficulties associated with manual or gravity-based delivery methods while maintaining continuous polishing action.
4Manufacturing precision
If multiple zones with different parameters are used for polishing, then surface uniformity improves, but device complexity increases
Solution Approach 1:
The polishing assembly is designed as a multi-functional unit that can perform polishing operations on all three zones of the glass sheet. The system uses a family of related abrasive wheels and polishing heads that can be configured for different zones, allowing a single device to handle multiple polishing requirements rather than requiring separate machines for each zone.
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 accurate and uniform polishing of glass sheets, addressing surface imperfections and curvature issues, resulting in improved surface quality and reduced distortion, enhancing the processing efficiency and versatility of the glass polishing assembly.
Implementation Method 1
a plurality of suction devices (20) connected to and disposed for selectively engaging an undersurface of the glass sheet (100)
Implementation Method 2
a polishing assembly (30) structured to movably engage a corresponding surface of the glass sheet (100)
Data Source
AI summary
A glass sheet polishing assembly includes a support assembly having a mounting assembly disposed thereon. The mounting assembly interconnects the glass sheet and the support assembly in an operative position during a polishing procedure. A carriage is movable relative to the support assembly in a first direction relative to the glass sheet. A polishing assembly is movable along a length of the carriage in a second transverse direction. A drive assembly is disposed and structured to define a movable driving relation with the polishing assembly and the carriage to define a continuous path of travel of the polishing assembly over a surface of the glass sheet and to successively move both the carriage and the positioning assembly relative to the support assembly in the first direction and continuously move the polishing assembly along said carriage in the second transverse direction.