Threaded Cutter Assembly Retainer for Bit Alignment and Retention

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Solution Overview

Problem

Existing cutter assemblies with interchangeable cutter bits often suffer from misalignment and inadequate retention, leading to precision issues during cutting operations.

Innovation Solution

A cutter assembly design featuring a retainer component with a slot and threaded retainer that securely aligns and retains the cutter bit along a rotational axis, utilizing external and internal threads, and seating surfaces to ensure central positioning and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a cutter bit is bolted onto a hub in existing cutter assemblies, then the cutter bit can be interchangeably mounted, but the cutter bit becomes misaligned and is not retained effectively

Engineering Contradiction:

Improveinterchangeability of cutter bitVSAvoidalignment precision of cutter bit

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The cutter assembly is divided into distinct components: a hub with a slot, a retainer component with a cutter aperture, and a threaded retainer. This segmentation allows the cutter bit to be interchangeably mounted while each component contributes to precise alignment and retention through its specific geometric features.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The retainer component acts as an intermediary between the hub and the cutter bit. It features a slot that receives the cutter bit and a cutter aperture that aligns with the hub's slot, mediating the connection to ensure both interchangeability and precise alignment through its structured geometry.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a cutter bit is bolted onto a hub in existing cutter assemblies, then the cutter bit can be interchangeably mounted, but retention effectiveness is insufficient

Engineering Contradiction:

Improveinterchangeability of cutter bitVSAvoidretention effectiveness of cutter bit

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The hub and retainer component are pre-configured with aligned slots and apertures before the cutter bit is installed. This preliminary alignment ensures that when the cutter bit is mounted, it is automatically positioned correctly and secured effectively, combining interchangeability with reliable retention.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The retainer component serves as an intermediary that enhances retention effectiveness. Its structured design with a slot and cutter aperture, combined with the threaded retainer, provides secure holding of the cutter bit while maintaining ease of interchangeability.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Manufacturing precision

If multiple retainment features are added to secure the cutter bit, then retention and alignment improve, but device complexity increases

Engineering Contradiction:

Improvealignment precision of cutter bitVSAvoidstructural complexity of cutter assembly

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The hub and retainer component are designed as integrated structures where the slot and cutter aperture are pre-aligned. This merging of alignment and retention functions into unified components achieves precise cutter bit positioning without requiring separate adjustment mechanisms, thereby controlling structural complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The retainer component performs multiple functions: it provides the cutter aperture for alignment, houses the slot for cutter bit reception, and works with the threaded retainer for secure retention. This multi-functionality achieves precise alignment and reliable retention without proportionally increasing structural complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11980953B1Cutter assembly

Publication Date: 2024.05.14 MULTIPLE CUTTER LLC

AI summary

A cutter assembly is configured to interchange a cutter bit and has a plurality of retaining features to secure the cutter bit to ensure positive retention and alignment along a rotational axis. A cutter bit is retained within a slot of the retainer component and the retainer component is coupled to a chuck component. The retainer component may be detachably attachable to the chuck component by external threads that are configured to thread into the internal threads of the chuck component. The cutter bit may be retained in the slot by a threaded retainer that extends through one side of the retainer component, through a cutter aperture in the cutter bit, through the slot and into a threaded retainer aperture in the opposing side of the retainer component. The threaded retainer is configured to extend orthogonally to the slot to pull the first side of the retainer component to the second side and pinch or compress against the cutter bit therein.