Land Preparation Tool Mounting Interface for Vibration-Resistant Fit
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Solution Overview
Problem
Existing land preparation tools face challenges in securely attaching cutting, grinding, and mulching tools to vehicles due to vibration and shock loading, leading to loose connections and increased manufacturing costs.
Innovation Solution
The use of non-planar profiles on tool holders and land preparation tools with inverse mounting surfaces, combined with intermediate connectors, provides a secure interference fit and reduces the risk of loosening, while allowing for cost-effective manufacturing and easy replacement of worn parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flat mounting surfaces are used for attaching land preparation tools, then manufacturing is simpler, but the connection becomes loose under vibration and shock loading
Solution Approach 1:
The patent applies curved surfaces instead of flat surfaces by providing a tool holder with a convex curved mounting surface and a tool with a corresponding concave curved mounting surface. This curvature creates an interference fit that maintains secure connection under vibration and shock loading while remaining manufacturable through standard forming processes.
2Reliability
If precision-machined flat surfaces are used to prevent loosening, then connection stability improves, but manufacturing costs increase
Solution Approach 1:
The curved interference fit surfaces provide inherent stability against loosening without requiring high-precision machining. The curvature itself generates the securing force, allowing manufacturing through less expensive forming and casting processes while maintaining reliable attachment under operational loads.
3Stability of the object's composition
If flat mounting surfaces with tight tolerances are specified, then tool stability improves, but manufacturing precision requirements and costs increase
Solution Approach 1:
The curved surfaces create an interference fit where the geometry itself provides the stabilizing force. This approach is more tolerant of variations in surface finish and dimensional tolerances compared to flat surfaces, as the curvature ensures proper engagement and load distribution even with moderate manufacturing variations.
4Reliability
If secure attachment features are added to prevent loosening, then connection reliability improves, but device complexity increases
Solution Approach 1:
The patent achieves secure attachment through the simple geometric feature of curved surfaces on the tool holder and tool. This single geometric modification provides both the interference fit for security and the tolerance for misalignment, eliminating the need for additional complex fastening mechanisms or multiple attachment features.
Data Source
AI summary
A land preparation tool includes a cutting surface having a blade and a mounting interface opposite the cutting surface. The mounting interface of the land preparation tool is configured to detachably connect to a tool holder having a top surface, an end surface, a mounting surface opposite the end surface, and opposing first and second side surfaces extending between the end surface and the mounting surface. The mounting surface has an apex extending downwardly from the top surface and first and second mounting faces. The first mounting face extends inwardly from the first side surface toward the apex and the second mounting face extends inwardly from the second side surface toward the apex.