Coulter Blade With Step Plane Notches for Consistent Soil Cuts
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Solution Overview
Problem
Existing agricultural blades, such as coulters and discs, struggle with inconsistent cuts and soil throwing due to varying soil types and crop conditions, particularly in no-till farming, necessitating a need for consistent penetration and reduced soil throwing.
Innovation Solution
The agricultural blade features a disc or coulter with a circular outer periphery and multiple step plane notches that taper from a thicker radial inside to a thinner, sharpened edge, ensuring uniform penetration and residue sizing with reduced soil throwing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional agricultural blades are used, then they can penetrate the soil, but they produce inconsistent cuts and excessive soil throwing
Solution Approach 1:
The blade edge is segmented into multiple discrete cutting elements (teeth) rather than a continuous edge. Each tooth is independently shaped with specific geometry to control soil interaction, allowing consistent penetration and cut while reducing unwanted soil throwing through the segmented contact points.
Solution Approach 2:
Different portions of the blade have different geometries optimized for specific functions. The cutting teeth have sharp edges for penetration, while the blade body has a curved profile that controls soil flow. Each local region of the blade is designed with quality (geometry) tailored to its specific operational requirement.
2Manufacturing precision
If the blade edge is made thinner for sharper cutting, then penetration improves, but structural strength decreases
Solution Approach 1:
The blade is divided into multiple teeth rather than a single thin edge. This segmentation allows each tooth to be thin and sharp for effective penetration, while the overall blade structure remains thick and strong due to the distributed geometry of multiple teeth spaced along the blade arc.
Solution Approach 2:
The blade features a curved profile with teeth arranged along an arc rather than a straight line. This curvature distributes the mechanical loads across the blade structure, enhancing strength while maintaining sharp cutting edges. The arc geometry allows the blade to flex and absorb impacts without breaking.
Data Source
AI summary
A ground engaging agricultural blade, coulter, or disc having a central opening adapted to be attached to an implement for rotation about a substantially horizontal axis of rotation; the coulter or disc have an outer periphery; and plurality of step plane notches disposed in the outer periphery. The blade can be used with a hub disposed around the central opening or a spacer spool on a shaft extending through the central openings of adjacent blades, the spacer spools extending radially outwardly by a distance.