Burnishing Tool With Integrated Force Detector

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Solution Overview

Problem

Conventional surface finishing techniques like grinding, lapping, and polishing are time-consuming and cause abrasion, while existing burnishing tools lack accurate measurement of burnishing force, affecting processing accuracy.

Innovation Solution

A burnishing tool with a built-in force detector and elastic component, which includes a load cell to measure and adjust burnishing force, ensuring accurate force application and stability, and an edge detector for precise positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If burnishing technique is used to improve surface smoothness, then processing time is shortened and surface hardness is improved, but burnishing force control becomes critical for processing accuracy

Engineering Contradiction:

Improvesurface finishing timeVSAvoidprocessing accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies feedback principle by incorporating a force detector that continuously monitors the burnishing force applied to the workpiece. The detector provides real-time feedback about the actual force being applied, allowing the system to maintain optimal burnishing force levels. This ensures that the plastic deformation effect is achieved consistently without exceeding force limits that would compromise processing accuracy, while maintaining the high productivity benefits of burnishing.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces the traditional mechanical force application system with an instrumented system that includes a force detector integrated into the burnishing component. This substitution allows for electronic measurement and control of burnishing force, transforming a purely mechanical process into a controlled system that can maintain precision while achieving high productivity through burnishing.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If conventional grinding, lapping, or polishing techniques are used to improve surface smoothness, then surface quality is improved, but processing time is extended and equipment wear increases

Engineering Contradiction:

Improvesurface smoothnessVSAvoidprocessing time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent applies parameter changes by transitioning from the material removal mechanisms of grinding, lapping, or polishing to the plastic deformation mechanism of burnishing. This fundamental change in the processing parameter (from removal to deformation) achieves comparable or superior surface smoothness while dramatically reducing processing time and eliminating the wear issues associated with abrasive materials and tools.

Inventive Principle:

Principle #35Parameter changes

3Duration of action of stationary object

If burnishing component is made of hard materials to avoid abrasion, then component durability is improved, but burnishing force measurement becomes necessary for accuracy control

Engineering Contradiction:

Improvecomponent durabilityVSAvoidmeasurement system complexity

Core Design Contradiction:

Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The patent applies merging by integrating the force detector directly into the burnishing component structure. The detector is embedded within the hard-material burnishing component, combining the durable hard material function with the measurement function in a single integrated unit. This reduces overall system complexity compared to having separate measurement equipment, while maintaining both component durability and measurement capability.

Inventive Principle:

Principle #5Merging (Combining)

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 enhances processing accuracy and stability by accurately measuring and controlling burnishing force, reducing abrasion and processing time, and improving surface smoothness and hardness.

Implementation Method 1

a detector disposed in the bushing portion, for measuring a burnishing force performed on the burnishing component

Methodology Applied

Scientific EffectForce detection: Force

Implementation Method 2

the produced extruding force (burnishing force) may plastically deform the workpiece, so as to improve the surface smoothness and surface hardness of the workpiece

Methodology Applied

Scientific EffectPlastic deformation: Plasticity

Data Source

PatentUS8296912B2Burnishing tool

Publication Date: 2012.10.30 NAT TAIWAN UNIV OF SCI & TECH

AI summary

A burnishing tool includes a bushing portion, a burnishing component connected to the bushing portion, and a detector disposed in the bushing portion, for measuring a burnishing force performed on the burnishing component.