Variable Tooth Coulter Blade with Sized Inserts for Stubble Cutting
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Solution Overview
Problem
Traditional agriculture tillage equipment struggles to effectively cut genetically modified organism (GMO) stubble, leading to soil compression and reduced root growth, air circulation, and product availability, while existing coulter blades often cause stubble plugs that require manual removal.
Innovation Solution
A discoidal coulter blade with a blade hub and a circumference featuring a plurality of teeth with rounded gullets and alternating sharpened sides, along with insert openings for customizable geometry, designed to minimize soil contact and maximize stubble cutting and aeration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional coulter blades are used to cut stubble, then the blade structure is simple, but the blade cannot effectively cut GMO stubble and causes soil compression
Solution Approach 1:
The coulter blade is segmented into multiple functional components: a discoidal blade body, multiple teeth with alternating sharpened sides, rounded gullets between teeth, and insert openings for customizable geometry. This segmentation allows each component to perform its specific function - teeth for cutting stubble, gullets for reducing and aerating soil, and inserts for enhancing cutting capability on GMO stubble - thereby resolving the contradiction between structural simplicity and cutting effectiveness.
Solution Approach 2:
Different regions of the coulter blade are given different properties: teeth have sharp cutting edges for stubble cutting, gullets are rounded for soil aeration and composting, and insert openings accommodate variable geometry inserts for enhanced cutting. This local differentiation of properties allows the blade to effectively handle GMO stubble while maintaining overall functional integration.
2Productivity
If traditional coulter blades interact with soil to cut stubble, then cutting action is provided, but soil compression increases leading to reduced root growth and air circulation
Solution Approach 1:
The coulter blade employs a discoidal (circular) blade body with rounded gullets between the teeth. This curved, spherical geometry allows the blade to cut through stubble and soil with minimal compression compared to traditional straight or angular blade designs. The rounded shape distributes pressure more evenly and reduces soil compaction, thereby maintaining root growth and air circulation while providing effective cutting action.
Solution Approach 2:
The blade is divided into multiple teeth with rounded gullets between them, creating discrete cutting points rather than a continuous cutting edge. This segmentation reduces the overall contact area with the soil, minimizing compression while maintaining cutting effectiveness. The gaps between teeth allow soil to pass through with less compression.
3Productivity
If existing coulter blades cut stubble, then cutting action is achieved, but stubble plugs form requiring manual removal
Solution Approach 1:
The blade features multiple teeth with rounded gullets between them, creating discrete cutting segments. This segmentation prevents continuous stubble accumulation that leads to plugging. The rounded gullets act as channels that guide cut stubble away from the blade face, preventing plug formation and eliminating the need for manual removal.
Solution Approach 2:
The rounded gullets between teeth provide curved pathways for stubble to exit the cutting zone. This curvature prevents stubble from accumulating against the blade face, thereby preventing plug formation and maintaining continuous operation without manual intervention.
4Ease of operation
If GMO stubble is left uncut, then no manual removal is needed, but soil aeration and root growth are reduced
Solution Approach 1:
The multiple teeth with rounded gullets create numerous small cutting points distributed around the blade circumference. This segmentation allows efficient cutting of substantial GMO stubble into smaller segments that can be easily composted and incorporated into the soil, improving aeration and root growth without requiring manual removal.
Solution Approach 2:
The blade provides localized cutting action through specifically designed teeth and gullets that optimize stubble reduction. The rounded gullets create channels for air circulation and root penetration, directly addressing the aeration and root growth benefits while maintaining operational simplicity.
Data Source
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AI summary
A system and method cuts and increases surface area of surface stubble material while contemporaneously mulching, tiling and aerating the soil. A discoidal coulter blade is configured with a plurality of circumferential teeth for cutting the surface stubble as well as reducing the downward pressure required for the blade to enter the type and depth of soil desired. The circular coulter blade is configured with a plurality of inserts oriented normal to the rotational movement of the blade as the blade cuts the soil. Each insert is shaped to aerate a specific type of soil anticipated by an operator. The inserts are positioned on the blade for desired impact with the soil and angled in placement on the blade to maintain the desired effect on the soil.