Multi-Layer Sanding Element with Segmented Abrasive Grains
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Solution Overview
Problem
Existing sanding elements require multiple operations and tools to smooth and polish metal workpieces, as they cannot effectively remove material and achieve a polished surface in a single operation, leading to inefficiencies and increased time and storage needs.
Innovation Solution
A disc-shaped sanding element with three-dimensional thread or fibre structure, comprising a central layer and edge layers with different abrasive grain sizes and compressibility, allowing for simultaneous material removal and surface smoothing/polishing using the same tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a sanding element uses a single layer with uniform abrasive grain size, then the structure is simple and easy to manufacture, but it cannot simultaneously remove material and polish the surface
Solution Approach 1:
The sanding element is divided into multiple layers, each with different abrasive grain sizes. The first layer contains coarse abrasive grains for material removal, while the second layer contains fine abrasive grains for polishing. This segmentation allows each layer to perform its specific function optimally, enabling the sanding element to both remove material and polish the surface in a single operation.
Solution Approach 2:
The patent combines multiple layers with different abrasive grain sizes into a single sanding element structure. By adhering the first layer with coarse abrasive grains and the second layer with fine abrasive grains together, the invention merges the material removal function and the polishing function into one integrated tool, eliminating the need to switch between separate sanding and polishing elements.
2Productivity
If multiple sanding elements are used for different operations, then each element can be optimized for its specific function, but it requires frequent tool changes and increases storage needs
Solution Approach 1:
The sanding element is designed as a universal tool that can perform both material removal and surface polishing functions. By incorporating layers with different abrasive grain sizes in a single element, the invention eliminates the need to switch between separate sanding and polishing tools, thereby increasing productivity and reducing the time lost to tool changes.
Solution Approach 2:
The patent merges the functions of multiple sanding elements (coarse sanding and fine polishing) into a single multi-layer element. This allows the user to complete both operations without removing the tool or changing abrasive surfaces, significantly reducing downtime and improving overall processing efficiency.
3Manufacturing precision
If the sanding element uses only fine abrasive grains, then the surface can be polished smoothly, but material removal becomes inefficient
Solution Approach 1:
The sanding element is segmented into layers with different abrasive grain sizes. The first layer uses coarse abrasive grains that are effective for rapid material removal, while the second layer uses fine abrasive grains that provide smooth surface polishing. This segmentation allows each layer to excel at its specific task, maintaining both high material removal rate and surface smoothness.
Solution Approach 2:
Different regions of the sanding element (different layers) have different local qualities in terms of abrasive grain size. The outer layer has coarse grains for aggressive material removal, while the inner layer has fine grains for delicate polishing. This local differentiation of quality enables the element to perform both roughing and finishing operations effectively.
4Productivity
If the sanding element uses only coarse abrasive grains, then material removal is efficient, but the surface cannot be polished to a smooth finish
Solution Approach 1:
The sanding element is divided into functional segments (layers) with different abrasive grain sizes. The first layer contains coarse abrasive grains optimized for high material removal rates, while the second layer contains fine abrasive grains optimized for achieving smooth surface finishes. This segmentation ensures that both productivity and manufacturing precision requirements are met within a single tool.
Solution Approach 2:
The invention merges the coarse sanding capability and fine polishing capability into one integrated element. The combination of layers with different abrasive grain sizes allows the element to first efficiently remove material with the coarse layer, then immediately polish the surface with the fine layer, achieving both high productivity and surface smoothness in sequence.
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
Enables efficient removal of material and smoothing/polishing of metal workpieces in a single operation, reducing the need for multiple tools and time, while maintaining flexibility and durability.
Implementation Method 1
a sanding element which allows to remove material from the surface of a workpiece by sanding it
Implementation Method 2
the compressibility of the central layer is smaller than that of said edge layers
Data Source
AI summary
Disc-shaped sanding element (1) and method for manufacturing this sanding element (1) with a circular circumference with at least two layers (4,5,6) bonded to each other containing abrasive grains (11, 12), wherein these layers (4,5,6) extend at least to the circumference of the sanding element (1) in order to form a sanding edge (8) on this circumference (7), wherein each of these layers (4,5,6) has layer properties including compressibility, abrasive grain density, abrasive grain size and grain material. The layers (4,5,6) contain a three-dimensional thread or fibre structure in which said abrasive grains (11,12) are distributed, wherein adjacent layers (4,5,6) have at least one different layer property.