Dynamic Balance Testing Device Using Internal Support Rollers

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Solution Overview

Problem

Conventional dynamic balance testing devices require attaching and removing shafts for measurement, increasing man-hours and potentially damaging the rotating body and shaft, especially when measuring rotating bodies without pre-installed shafts.

Innovation Solution

A dynamic balance testing device utilizing a plurality of support rollers with adjustable rotation axes to support the specimen internally, allowing it to rotate about its central axis without the need for a measurement shaft, thereby eliminating the need for shaft attachment and detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a shaft for measurement is attached to the rotating body before measurement, then the dynamic imbalance can be measured, but more man-hours are required and potential damage may occur

Engineering Contradiction:

Improvedynamic imbalance measurementVSAvoidman-hours for shaft attachment and detachment

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The invention extracts and eliminates the shaft for measurement from the measurement system. Instead of attaching a shaft to the rotating body, the device uses support rollers that directly contact the rotating body's outer peripheral surface, allowing measurement without the intermediate shaft component.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The support rollers serve multiple functions: they support the rotating body during rotation, provide accurate rotational positioning, and enable direct measurement without shaft attachment. This multi-functional design eliminates the need for separate shaft attachment procedures.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If a shaft for measurement is attached to the rotating body, then accurate rotation about the measurement axis is achieved, but the rotating body and shaft may be damaged

Engineering Contradiction:

Improverotation accuracyVSAvoiddamage to rotating body and shaft

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The shaft for measurement is completely removed from the system. The support rollers directly contact the rotating body's outer peripheral surface, eliminating the interface between shaft and rotating body that could cause damage during attachment and detachment.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The support rollers act as intermediaries between the measurement system and the rotating body. They provide the necessary rotational support and positioning without requiring direct attachment to the rotating body, thus preventing damage.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If conventional support methods are used, then the rotating body can be supported, but the process requires shaft attachment and detachment procedures

Engineering Contradiction:

Improvesupport mechanismVSAvoidshaft attachment process

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The shaft for measurement is removed from the system, eliminating the complex attachment and detachment procedures. The support rollers directly engage with the rotating body's outer peripheral surface, simplifying the entire measurement setup process.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The rotating body itself serves as the measurement component by rotating on its own outer peripheral surface supported by the rollers. This self-service approach eliminates the need for external shafts and their associated attachment procedures.

Inventive Principle:

Principle #25Self-service

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

This solution reduces man-hours required for measurement, improves measurement accuracy, and minimizes damage to the rotating body and shaft by eliminating the need for shaft attachment and detachment, while stabilizing the specimen during testing.

Implementation Method 1

a plurality of support rollers having respective rotation axes extending in a predetermined direction, the plurality of support rollers being configured to support a specimen in internal contact with an inner periphery of the specimen in such a manner that the specimen is rotatable about a central axis of the inner periphery

Methodology Applied

Scientific EffectRolling: Roller

Data Source

PatentUS10794788B2Dynamic balance testing device

Publication Date: 2020.10.06 KOKUSAI KEISOKUKI KK

AI summary

A dynamic balance testing device includes a plurality of support rollers having respective rotation axes extending in a predetermined direction, the plurality of support rollers being configured to support a specimen in internal contact with an inner periphery of the specimen in such a manner that the specimen is rotatable about a central axis of the inner periphery, the plurality of support rollers including, a first support roller having a first rotation axis that is parallel to the central axis of the inner periphery of the specimen, and a second support roller having a second rotation axis that is parallel to the central axis of the inner periphery of the specimen and is positionally different from the first rotation axis of the first support roller.