Epicyclic Gear Kit With Standardized Modulus for Torque Reconfiguration

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Solution Overview

Problem

Existing epicyclic gear systems lack flexibility in configuration, limiting their ability to produce different output torques and requiring complex reconfiguration for various applications and maintenance.

Innovation Solution

A kit of parts comprising sun gears, planet gears, and ring gears with the same modulus, allowing for interchangeable components to create multiple gear arrangements, facilitating easy assembly and disassembly for various configurations and applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional epicyclic gear systems use fixed configurations with different gear components, then multiple drive modes with different output torques can be provided, but the system lacks flexibility and requires complex reconfiguration for various applications

Engineering Contradiction:
Improveconfiguration flexibilityVSAvoidreconfiguration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by making all gear components (sun gears, planet gears, ring gears) interchangeable through standardized modulus. This allows a single set of components to serve multiple functions and configurations, enabling the same parts to be used in different drive modes and applications without requiring separate specialized components for each configuration.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent segments the epicyclic gear system into interchangeable modular components with standardized modulus. This segmentation allows individual gears to be independently selected and reconfigured, facilitating easy assembly and disassembly while maintaining system functionality across different configurations.

Inventive Principle:
Principle #1Segmentation

2Productivity

If traditional epicyclic gear systems use specialized gear components for different drive modes, then multiple output torques can be achieved, but prototyping and maintenance become time-consuming

Engineering Contradiction:
Improveprototyping speedVSAvoidreconfiguration time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent changes the key parameter of gear modulus to a standardized value across all components. This parameter standardization enables quick reconfiguration by simply changing which standardized components are assembled together, rather than modifying or adapting specialized components, thereby significantly reducing prototyping and maintenance time.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If epicyclic gear systems use interchangeable components with the same modulus, then flexibility in configuration is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improvecomponent interchangeabilityVSAvoidmodulus consistency
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent applies homogeneity by ensuring all gear components have the same modulus value. This creates a homogeneous set of interchangeable parts where the standardized parameter ensures compatibility across different component types (sun gears, planet gears, ring gears), enabling flexibility without requiring excessive manufacturing precision beyond the standardized modulus specification.

Inventive Principle:
Principle #33Homogeneity

Data Source

PatentEP4400745A1Epicyclic gear system
Publication Date: 2024.07.17 GOODRICH ACTUATION SYST
  • EP4400745A1 patent drawingFigure 1A~1B
  • EP4400745A1 patent drawingFigure 2
  • EP4400745A1 patent drawingFigure 3

AI summary

A kit of parts to provide a reconfigurable epicyclic gear system, the kit of parts comprising: at least one sun gear; a planet carrier; a plurality of sets of planet gears configured to be mounted on the planet carrier and to mesh with the at least one sun gear; and a plurality of ring gears configured to mesh with the plurality of sets of planet gears; wherein the at least one sun gear, the plurality of sets of planet gears and the plurality of ring gears all have the same modulus such that they can be arranged in different configurations that each produce a different output torque.