Modular Bore Polishing Device with Media Distribution

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Solution Overview

Problem

Existing methods for polishing internal surfaces of bores are inefficient, inconsistent, and pose safety hazards due to manual operation and the need for expensive dedicated equipment.

Innovation Solution

A modular tool system with a cylindrical head portion that radially preloads abrasive paper against the workpiece surface, allowing for rotational and axial movement to polish the surface, and includes a distribution and collection system for refreshing and replacing the abrasive paper.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual polishing with abrasive paper on a fingertip or stick is used, then the process is simple and requires no expensive equipment, but the operator safety is compromised and finishing consistency deteriorates

Engineering Contradiction:
Improvesimplicity of processVSAvoidoperator safety
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a stick or rod as an intermediary tool between the operator's hand and the abrasive paper. This mediator allows the operator to apply pressure and control the polishing process without direct finger contact with rotating components or exposed abrasive paper, thereby maintaining process simplicity while improving operator safety.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs disposable abrasive paper that is replaced when worn rather than attempting to restore or reuse it. This approach maintains simplicity by avoiding complex reusable polishing tooling while ensuring consistent finishing quality through regular replacement of the abrasive medium.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Ease of manufacture

If manual polishing with frequent paper replacement is used, then the process requires no specialized equipment, but productivity deteriorates due to time spent replacing paper

Engineering Contradiction:
Improveavoidance of expensive equipmentVSAvoidproductivity
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent implements preliminary action by pre-attaching abrasive paper to the polishing tool before the polishing operation begins. This allows the operator to prepare the tool in advance and focus on the polishing task itself without frequent interruptions for paper replacement, thereby improving productivity while avoiding complex automated paper feed systems.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent aims to achieve continuity of useful action by minimizing interruptions during the polishing process. Through improved paper attachment methods and tool designs that allow for quicker paper changes, the system reduces non-productive time while maintaining the simplicity of manual operation without expensive automated equipment.

Inventive Principle:
Principle #20Continuity of useful action

3Device complexity

If manual polishing with inconsistent pressure application is used, then the process requires no automated control systems, but manufacturing precision deteriorates due to inconsistent finishes

Engineering Contradiction:
Improvecomplexity of control systemVSAvoidfinishing consistency
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by modifying the physical characteristics of the polishing tool, such as the stiffness and geometry of the stick or rod, to influence pressure distribution. By carefully selecting material properties and dimensional parameters of the tool components, the system achieves more consistent pressure application during manual polishing without requiring automated control systems.

Inventive Principle:
Principle #35Parameter changes

4Manufacturing precision

If dedicated honing, lapping, or superfinishing equipment is used, then manufacturing precision is improved, but device complexity and cost increase

Engineering Contradiction:
Improvebore surface finish qualityVSAvoidcomplexity of polishing equipment
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the polishing function into separate, interchangeable components such as the stick, abrasive paper, and attachment mechanisms. This modular approach allows for specialized polishing action comparable to dedicated equipment while maintaining overall system simplicity and reducing cost by avoiding integrated complex machine tools.

Inventive Principle:
Principle #1Segmentation

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

The tool system enables efficient, consistent, and safe polishing of bore surfaces, reducing operator risk and improving productivity by allowing quick and automatic refreshment of abrasive paper.

Implementation Method 1

hold a section of abrasive paper on a fingertip or at the end of a stick while manually pressing the abrasive paper against the interior surface

Methodology Applied
Scientific EffectAbrasion: Abrasion

Implementation Method 2

manually pressing the abrasive paper against the interior surface, rotating the workpiece, and moving the paper axially along the bore

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS20250187130A1Modular bore polishing devices, and associated systems and methods
Publication Date: 2025.06.12 BLUE ORIGIN MANUFACTURING LLC
  • US20250187130A1 patent drawing
  • US20250187130A1 patent drawing
  • US20250187130A1 patent drawing

AI summary

A representative tool system for polishing and/or finishing a surface can include an arbor portion and an interchangeable (i.e., modular) head portion. The arbor portion can include a body portion, one or more media collection elements, a rotation mechanism positioned to rotate the one or more media collection elements relative to the body portion, and one or more media distribution elements. The head portion can include a media distribution region for receiving a media distribution element, a media collection region for receiving a media collection element, and media channels connecting the media distribution region and the media collection region to one or more openings at the exterior perimeter of the head portion for passing the media to the exterior perimeter of the head portion. In some embodiments, the head portion can carry the one or more media collection elements.