V-Notched Tillage Disc Geometry for Uniform High-Speed Wear

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Agricultural tillage blades experience uneven wear across their notches during high-speed operation, leading to deformation of the blade profile and reduced efficiency.

Innovation Solution

The agricultural tillage blade features a unique geometry with V-notches and compound bevels that prevent uneven wear, allowing for high-speed operation while maintaining a defined profile.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If notched blades are used for high-speed tilling, then productivity is improved, but wear uniformity deteriorates

Engineering Contradiction:

Improvehigh-speed operationVSAvoidwear uniformity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies local quality by creating V-shaped notches with specific angular geometry (30-60 degrees) at precise locations on the blade perimeter. This localized geometric modification concentrates stress and wear in controlled areas while maintaining the overall blade structure, thereby enabling high-speed operation without compromising wear uniformity across the notch regions.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The invention employs asymmetry through the V-shaped notch configuration where the notch angle is deliberately designed to be asymmetric relative to the blade surface normal. This asymmetric geometry creates optimized stress distribution patterns that prevent uniform wear across the entire blade, allowing high-speed tilling while maintaining operational reliability through controlled wear in specific asymmetric regions.

Inventive Principle:

Principle #4Asymmetry

2Productivity

If notched blades operate at high speed, then productivity is improved, but blade profile stability deteriorates

Engineering Contradiction:

Improvehigh-speed operationVSAvoidblade profile stability

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The V-shaped notch design with specific angular parameters (30-60 degrees) provides localized structural reinforcement at critical stress points on the blade perimeter. This local geometric enhancement maintains blade profile stability during high-speed rotation by preventing deformation in the notch regions, thereby preserving overall blade integrity and operational stability.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent incorporates curved transition zones within the V-shaped notches that smoothly connect the notch walls to the blade surface. These curved geometries reduce stress concentration effects and prevent sharp angular features from deforming under high-speed operational loads, thereby maintaining blade profile stability while enabling high-speed productivity.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentUS20260060159A1Disc blade with v-notch and associated systems and methods

Publication Date: 2026.03.05 OSMUNDSON MANUFACTURING CO

AI summary

Disclosed herein are various implementations relating to agricultural tillage discs with a geometry that provides significant advantages over existing models. This improved geometry allows for high-speed tillage while maintaining surface edges more uniformly than would be anticipated in prior models. Additionally, a new edge design allows for an improved edge-durability while maintaining soil penetration.