Rotary Knife Steeling Tool With Self-Aligning Contact Assemblies

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Solution Overview

Problem

Conventional steels are not adapted for use with rotary knives, leading to frequent replacement instead of maintenance.

Innovation Solution

A steeling tool with a frame, steeling component assemblies, and stops that limit operational positioning, allowing for effective alignment and maintenance of rotary knife blades.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional steels are used for rotary knives, then the structure is simple, but the steeling effectiveness is poor leading to frequent replacement

Engineering Contradiction:
Improvesteeling effectivenessVSAvoidtool structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The steeling tool is divided into multiple steeling members (at least two) that can be independently positioned and adjusted. Each steeling member can be separately configured to contact different portions of the rotary knife blade, allowing precise adaptation to the blade geometry and achieving effective steeling while maintaining manageable structural complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The steeling members are made movable relative to the support members through pivotal attachment and spring biasing mechanisms. This dynamic configuration allows the steeling members to automatically adjust their positions to match the curvature and dimensions of different rotary knife blades, significantly improving steeling effectiveness without requiring a completely rigid complex structure

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If steeling members are pivotally attached and spring-biased, then the steeling adaptability is improved, but the device complexity increases

Engineering Contradiction:
Improvesteeling member positioningVSAvoidsupport member structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The spring-biased steeling members automatically self-adjust to the appropriate position when a rotary knife blade is inserted. The springs provide continuous force that pushes the steeling members into contact with the blade, and the pivotal attachment allows them to self-align with the blade's curvature without requiring external adjustment mechanisms, achieving high adaptability with minimal added complexity

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The positioning of steeling members is controlled by changing the spring force parameters and pivotal joint characteristics. By adjusting spring constants and pivot point locations, the system achieves versatile adaptation to different blade sizes and shapes while maintaining a relatively simple overall structure

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If stops are used to limit operational positioning, then the operational precision is improved, but the device complexity increases

Engineering Contradiction:
Improveknife interface positioningVSAvoidframe structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

Stops are pre-positioned on the support members at specific locations that correspond to the correct operational positioning of steeling members. When the tool is assembled, the stops are already in place to guide and limit the movement of steeling members, ensuring precise knife interface positioning without requiring complex real-time control mechanisms

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The stops act as intermediary elements between the support members and steeling members. They provide a simple mechanical constraint that indirectly controls the positioning of steeling members, achieving precise operational positioning while adding minimal structural complexity

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables efficient maintenance of rotary knife blades, extending their lifespan and reducing the need for replacement.

Implementation Method 1

a resilient element (i.e., spring) associated with the first steeling component assembly and configured to bias the first steeling component assembly against the stop

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4260981B1A tool for steeling a rotary knife
Publication Date: 2025.07.23 HANTOVER INC
  • EP4260981B1 patent drawingFigure 1
  • EP4260981B1 patent drawingFigure 2
  • EP4260981B1 patent drawingFigure 3

AI summary

A tool (20) for steeling a knife (22) includes a frame (36) and first and second second steeling components (64). Each component (64) is shiftably mounted relative to the frame (36) for movement between a first position (96) and a second position (98) to cooperatively define a knife interface (104) configured to engage and thereby steel (20) the knife (22). The steeling components (64) are resiliently biased into the first position (96), with the knife interface (104) moving as the steeling components (64) shift between the first and second positions (96).