Oscillating Tool Accessory Stiffening Bead Design
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Solution Overview
Problem
Large-area accessories for oscillating machine tools face challenges in mechanical stability and efficient material suction, as they tend to deform and have longer distances to the suction device, making them unusable.
Innovation Solution
The design incorporates a bead structure on the underside for enhanced mechanical stability and suction, with elevations on the top to stiffen the accessory and elongate structures radiating from the center for improved rigidity and cost-effective production, allowing for effective material removal without increasing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If large-area accessories are used to machine larger areas, then productivity is improved, but mechanical stability deteriorates due to bending and deformation
Solution Approach 1:
The accessory is divided into multiple segments or sections with individual structures between the top and bottom surfaces. These structures create a segmented framework that maintains mechanical stability while allowing the overall accessory to cover large areas without excessive bending or deformation.
Solution Approach 2:
The invention adds a third dimension by incorporating structures that extend between the top and bottom surfaces of the accessory. This vertical dimension creates a three-dimensional framework that significantly enhances mechanical stability and resistance to bending, transforming a flat two-dimensional accessory into a structurally robust three-dimensional component.
2Productivity
If large-area accessories are used to reduce working time, then productivity is improved, but material extraction becomes difficult due to greater distances
Solution Approach 1:
The accessory incorporates multiple separate structures distributed across its large surface area, with each structure having its own material extraction opening. This segmentation allows removed material to be extracted at multiple locations simultaneously, reducing the effective extraction distance and preventing material accumulation across the large accessory surface.
Solution Approach 2:
The invention integrates material extraction openings within the three-dimensional structures that extend between the top and bottom surfaces. This vertical integration allows extraction to occur at multiple height levels and spatial locations, effectively reducing the horizontal distance material must travel to reach an extraction point.
3Productivity
If accessory size is increased to cover larger areas, then productivity is improved, but weight increases which affects handling and performance
Solution Approach 1:
The accessory utilizes thin-walled structures and shell-like formations between the top and bottom surfaces. These thin-walled three-dimensional structures provide the necessary mechanical strength and stability for large-area processing while minimizing material usage and overall weight compared to solid constructions.
Solution Approach 2:
By transitioning from two-dimensional flat surfaces to three-dimensional structures with vertical elements, the invention achieves high mechanical strength-to-weight ratio. The three-dimensional framework provides structural support with minimal material, enabling large-area accessories to maintain stability without excessive weight increase.
Data Source
Figure 1
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Figure 3~4
AI summary
The invention relates to an accessory (5), in particular a grinding plate, scraper, or rasp, for an oscillating machine tool having an upper face (11) and a lower face (12), wherein when the accessory is used on an oscillating machine tool the lower face (12) faces away from the machine tool and the upper face (11) faces the machine tool, wherein the accessory (5) can be or is gripped in the machine tool and wherein the accessory (5) has a structure (6, 7) for increasing the mechanical stability of the former, wherein the structure (6, 7) is formed as a raised area on the upper face (11).