Rotor Disk Scribing Device for Precise Annular Marking
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Solution Overview
Problem
Conventional scribe marking tools fail to accurately and precisely mark scribe lines on rotor disks of gas turbine engines, and the process is time-consuming.
Innovation Solution
A scribing device with adjustable and slidable scribing assemblies, each equipped with a scribing tool and biasing member, allows for precise marking of annular scribe marks on the rotor disk's circumferential surface by rotating relative to the component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional scribe marking tools are used, then the marking process is simple, but the marking precision and accuracy are insufficient
Solution Approach 1:
The scribing device is divided into multiple scribing assemblies (first scribing assembly, second scribing assembly, etc.), each capable of independent adjustment and operation. Each scribing assembly can be positioned at different locations along the rail portion, allowing precise marking at multiple positions simultaneously or sequentially, thereby improving marking precision while maintaining manageable device complexity through modular design
Solution Approach 2:
The scribing assemblies are designed to be slidable along the rail portion, enabling dynamic adjustment of their positions. The biasing members provide continuous adjustable force to control the engagement of scribing tools with the component surface. This dynamic capability allows the device to adapt to different marking requirements and positions, significantly improving marking precision
2Productivity
If conventional scribe marking tools are used, then the device structure is simple, but the marking efficiency is low and time-consuming
Solution Approach 1:
Multiple scribing assemblies are combined into a single integrated device with a common holder and rail portion. This allows multiple scribe marks to be made simultaneously or in rapid succession on different locations of the component, dramatically improving marking efficiency. The unified structure maintains reasonable complexity while enabling parallel operation
Solution Approach 2:
The scribing device is designed with universal functionality to mark multiple types of features (different scribe lines at different positions) using the same device. The slidable scribing assemblies can be positioned and configured for various marking tasks, making the device versatile and efficient for different marking requirements without needing multiple separate tools
3Manufacturing precision
If multiple scribe lines are marked at different positions, then the alignment precision is improved, but the device complexity increases
Solution Approach 1:
The device introduces a longitudinal dimension along the rail portion, allowing scribing assemblies to be positioned at different locations. This dimensional extension enables precise alignment control for multiple scribe lines while maintaining a relatively simple structure through the use of a common rail and holder system
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 marking of scribe lines at desired locations, reducing assembly time and post-weld testing efforts by ensuring precise alignment and depth of scribe marks.
Implementation Method 1
a first biasing member configured to bias the first scribing tool towards the circumferential surface of the component
Data Source
AI summary
A scribing device for a component includes a holder and a first scribing assembly coupled to the holder. The first scribing assembly includes a first scribing tool including a first scribing tip configured to define a first annular scribe mark on a circumferential surface of the component, and a first biasing member configured to bias the first scribing tool towards the circumferential surface of the component. The scribing device further includes a second scribing assembly. The second scribing assembly includes a second scribing tool including a second scribing tip configured to define a second annular scribe mark on the circumferential surface of the component, and a second biasing member configured to bias the second scribing tool towards the circumferential surface of the component.