Blade Insert Extension Assemblies for Wear Compensation

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Solution Overview

Problem

Existing wood cutters and chippers face challenges in extending the life and effectiveness of their blades due to wear and tear, requiring frequent sharpening and replacement, which increases operational costs and reduces efficiency.

Innovation Solution

The blade insert extension assemblies, featuring a blade insert with a trailing insert surface and an insert extension assembly that includes at least one extension block, allow for adjustable length extension of the blade insert, enabling the blade to be sharpened and reused multiple times by extending the cutting distance and compensating for metal loss during sharpening.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If the blade insert is made longer to extend cutting life, then the duration of action is improved, but the device complexity increases due to additional extension blocks and adjustment mechanisms

Engineering Contradiction:

Improveblade insert cutting lifeVSAvoidblade insert structure

Core Design Contradiction:

Duration of action of moving objectVSDevice complexity

Solution Approach 1:

The blade insert is divided into a base insert and one or more extension blocks that can be selectively added. Each extension block is a separate component that attaches to the base insert, allowing the cutting edge length to be segmented and extended in discrete increments without redesigning the entire blade insert.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The extension blocks are designed to nest with the base insert structure, where each extension block contains features that interface with the previous block or base insert. This nested arrangement allows multiple extension blocks to be stacked or connected in sequence, progressively extending the cutting edge while maintaining a compact overall structure when extensions are not deployed.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Length of moving object

If extension blocks are added to extend the blade insert, then the cutting distance is improved, but the weight of the moving object increases

Engineering Contradiction:

Improvecutting distanceVSAvoidblade insert weight

Core Design Contradiction:

Length of moving objectVSWeight of moving object

Solution Approach 1:

The blade insert system transitions from a static fixed-length design to a dynamic adjustable-length design. Extension blocks can be selectively added or removed based on operational requirements, allowing the cutting distance to be dynamically adjusted. This enables the system to optimize between cutting distance and weight by only adding extension blocks when extended cutting life is needed.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system allows changing the effective length parameter of the blade insert by adding or removing extension blocks. This parameter change directly affects both the cutting distance and the weight, providing flexibility to optimize performance based on specific operational conditions rather than being constrained to a fixed design.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If the blade insert is extended using multiple extension blocks, then the adaptability is improved, but the ease of manufacture decreases

Engineering Contradiction:

Improveblade length adjustmentVSAvoidblade insert assembly

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The blade insert system is segmented into standardized components (base insert and multiple identical extension blocks) that can be manufactured using the same processes and tooling. This segmentation allows each component to be produced independently and efficiently, then assembled through standardized interfaces, maintaining ease of manufacture while achieving adaptability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The extension blocks are designed as universal components that can be used with any base insert of the same type, and multiple extension blocks can be combined in various configurations. This universality means a single extension block design serves multiple purposes and can be applied across different blade insert assemblies, simplifying the manufacturing process through component standardization.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10814412B1Blade insert extension assemblies

Publication Date: 2020.10.27 SMITH SAWMILL SERVICE (BID) US INC

AI summary

Blade insert extension assemblies may include a blade insert configured for placement in the insert seat of the adjustable blade. The blade insert may have a leading insert surface and a trailing insert surface. An insert extension assembly may be carried by the blade insert. The insert extension assembly may include at least one extension block disposed generally along at least a portion of the trailing insert surface.