Convex Abrasive Sanding Tool for Wood Surfaces
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Solution Overview
Problem
Existing sanding machines require different tools for flat and grooved/raised surfaces of wooden products, leading to inconsistent results and the need for additional manual finishing operations.
Innovation Solution
A sanding machine with a rotating sanding tool featuring a convex geometric abrasive surface, such as a Reuleaux triangle or square, capable of moving along three orthogonal axes, allowing for efficient sanding and polishing of flat, grooved, and raised surfaces, including 90° angles, using a combination of mechanical and electronic control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different sanding tools (sanding pads for flat surfaces, abrasive brushes for grooved/raised parts) are used, then sanding capability is improved, but device complexity and process consistency deteriorate
Solution Approach 1:
The patent applies universality by designing a single sanding tool with a convex abrasive surface that can perform multiple sanding functions. The convex shape enables the tool to effectively sand flat surfaces, grooved surfaces, raised parts, and 90° angles, replacing the need for multiple specialized tools (sanding pads and abrasive brushes) with one versatile tool that maintains consistent results across different surface types.
2Productivity
If multiple distinct sanding tools are used for different surfaces, then sanding effectiveness is improved, but manufacturing precision and finishing consistency worsen
Solution Approach 1:
The convex abrasive surface provides universal sanding capability across all surface types while maintaining consistent finishing quality. The geometric shape ensures uniform contact and material removal rates whether sanding flat surfaces, grooves, or raised parts, eliminating the variability that occurs when switching between different tool types.
Solution Approach 2:
The convex abrasive surface utilizes curvature to achieve consistent sanding results. The rounded geometry allows the abrasive surface to maintain optimal contact with various surface contours, ensuring uniform pressure distribution and consistent material removal across different wood surfaces, thereby improving finishing consistency.
3Ease of operation
If traditional sanding tools are used, then flat surface sanding is effective, but the ability to sand 90° angles and complex cavities deteriorates
Solution Approach 1:
The convex abrasive surface employs curvature to access and effectively sand complex geometries including 90° angles and cavities. The rounded shape allows the tool to reach into tight spaces and conform to angular surfaces that flat sanding pads cannot access, while still maintaining effective sanding action on flat surfaces.
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 reliable and efficient sanding and polishing of both flat and complex surfaces in a single operation, eliminating the need for manual finishing and improving the consistency of the finishing process.
Implementation Method 1
at least one sanding unit (14) comprising in turn at least one sanding device (16) having at least one rotating sanding tool (18) provided with an abrasive surface (20)
Data Source
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AI summary
A machine for sanding surfaces of wooden products is described comprising: a support structure (12); at least one sanding unit (14) comprising at least one sanding device (16); and linear movement means (38, 40, 42) arranged to move the sanding device (16) along at least two axes (A, B, C) orthogonal to each other. The said sanding device (16) comprises at least one rotating sanding tool (18), driven by a respective motor (22) to rotate around its own rotation axis (D). The rotating sanding tool (18) is provided with an abrasive surface (20) which extends on a plane (P) substantially perpendicular to said rotation axis (D) and which is configured for performing the sanding and/or polishing of the surfaces of the wooden products. At least the abrasive surface (20) of the rotating sanding tool (18) has a plan shape, that is to say obtained on the plane (P), of a flat and convex geometric figure having three or more sides (20A, 20B, 20C, 20D) of equal length.