Contoured Cutting Element for Even Crop Flow and Lower Knife Wear

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Solution Overview

Problem

Cutting elements in agricultural equipment face issues with uneven distribution of plant material, lateral movement causing clogging, and uneven wear on knives due to serrated edges, which affect throughput and performance.

Innovation Solution

A cutting element with a linear cutting edge and a contoured surface featuring undulations to resist lateral movement of plant materials, reducing knife wear and improving material distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a serrated cutting edge is used, then cutting performance is improved, but knife wear increases unevenly

Engineering Contradiction:

Improvecutting performanceVSAvoidknife wear uniformity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The cutting element divides the cutting edge into multiple discrete cutting points or teeth along the edge, rather than using a continuous serrated pattern. This segmentation allows each cutting point to distribute wear more evenly across the knife surface while maintaining effective cutting action, resolving the contradiction between cutting performance and wear uniformity.

Inventive Principle:

Principle #1Segmentation

2Productivity

If plant material is fed through the cutter, then material processing is achieved, but lateral movement causes clogging

Engineering Contradiction:

Improvematerial processingVSAvoidclogging from lateral movement

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The cutting element incorporates a curved or contoured cutting edge geometry rather than a straight edge. This curvature guides plant material through the cutting zone in a controlled manner, preventing lateral movement and clogging while maintaining processing throughput. The curved path naturally directs material flow, eliminating the harmful lateral movement effect.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Reliability

If a linear cutting edge is used, then knife wear is reduced, but material distribution becomes uneven

Engineering Contradiction:

Improveknife wearVSAvoidmaterial distribution uniformity

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The cutting element features varying tooth spacing or geometry along the cutting edge, with different sections having optimized characteristics for specific functions. This local variation ensures even material distribution across the cutting width while maintaining reduced wear through the overall linear geometry and segmented structure, resolving the contradiction between wear reduction and distribution uniformity.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12484485B1Cutting element with contoured surface

Publication Date: 2025.12.02 KOOIMA AG INC

AI summary

A cutting system may have at least one cutting element having an inventive combination of features including a body having a first cutting edge, a first base surface extending from the first cutting edge with the body being elongated with a first end and a second end, the first cutting edge being linear and lying in a base plane, and the first base surface having contouring including undulations in the first base surface.