Multi-Axis Fixture for Turbine Workpiece Alignment

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Solution Overview

Problem

Current methods for adjusting projecting members of workpieces, such as transition pieces in turbine systems, are inaccurate and inefficient, often requiring manual alignment using tools like mallets, which can lead to misalignment and inefficiency.

Innovation Solution

A fixture system that includes holding devices to secure the workpiece and adjustment devices capable of moving projecting members along multiple axes, such as x, y, and z axes, with hydraulic or pneumatic actuators, allowing precise and efficient alignment within specifications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual adjustment methods using mallets are used to align projecting members, then the adjustment process can be performed with simple tools, but the alignment accuracy deteriorates and the process becomes inefficient

Engineering Contradiction:
Improvealignment accuracyVSAvoidadjustment efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent replaces manual mechanical adjustment methods (using mallets and visual estimation) with an automated system that uses electronic sensors, digital displays, and motorized actuators to achieve precise alignment of projecting members, thereby improving both accuracy and efficiency

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses digital replication of alignment measurements and positions through electronic sensors and display systems, allowing for precise measurement and adjustment without relying on manual visual estimation, thus improving alignment accuracy

Inventive Principle:
Principle #26Copying

2Manufacturing precision

If multiple adjustment devices are added to improve alignment precision, then the positioning accuracy improves, but the device complexity increases

Engineering Contradiction:
Improvepositioning accuracyVSAvoidfixture complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent designs adjustment devices that can operate along multiple axes (X, Y, Z) and perform both positioning and alignment functions, reducing the need for separate specialized devices while maintaining high positioning accuracy

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

Solution Approach 2:

The patent combines multiple adjustment functions (positioning, alignment, measurement) into integrated adjustment devices that operate cooperatively, reducing overall system complexity while achieving precise positioning

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

Enables accurate and efficient adjustment of projecting members, ensuring proper alignment and mounting of workpieces, reducing the risk of misalignment and improving operational efficiency in turbine systems.

Implementation Method 1

with hydraulic or pneumatic actuators

Methodology Applied
Scientific EffectHydraulic actuation: Hydraulic Press

Implementation Method 2

with hydraulic or pneumatic actuators

Methodology Applied
Scientific EffectPneumatic actuation: Gas Compressor

Data Source

PatentEP2662181B1Fixture and method for adjusting workpiece
Publication Date: 2016.08.03 GENERAL ELECTRIC CO
  • EP2662181B1 patent drawingFigure 1~2
  • EP2662181B1 patent drawingFigure 3
  • EP2662181B1 patent drawingFigure 4

AI summary

A fixture 100 and method for adjusting a workpiece 26 are disclosed. The fixture includes a holding device 102 engageable to a workpiece to secure the workpiece, and an adjustment device 106 engageable to a projecting member of the workpiece and movable along a first axis and a second axis. Movement of the adjustment device 106 along the first axis when engaged to the projecting member adjusts the projecting member along the first axis, and movement of the adjustment device 106 along the second axis when engaged to the projecting member adjusts the projecting member along the second axis.