Target Holding Jig Guide Portion for Measurement Accuracy
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Solution Overview
Problem
Existing measurement apparatuses face inaccuracies when measuring the distance to or bending angle of objects, particularly plate-shaped members like seal fins, due to shifting contact positions between spherical targets and the objects, leading to measurement errors.
Innovation Solution
A target holding jig with a supporting portion, guide portion, and coupling mechanism that accurately positions a spherical target in contact with the object, utilizing a detection unit and notification system to ensure precise contact and prevent positional shifts, allowing for accurate measurement across multiple points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a spherical target is brought into contact with a plate-shaped object to be measured, then the measurement can be performed, but the contact position of the target shifts in the thickness direction, causing measurement error
Solution Approach 1:
A guide portion is introduced as an intermediary component between the spherical target and the plate-shaped object. This guide portion regulates the contact position of the target with the object surface, ensuring that the target contacts the object at the correct position (normal line direction) rather than shifting in the thickness direction. The guide portion acts as a mediator that transfers and controls the contact interaction, thereby eliminating measurement errors caused by positional shifts.
2Adaptability or versatility
If the target is moved along the object to measure bending angle, then multiple measurement points can be accessed, but the contact position shifts occur at each position, accumulating measurement errors
Solution Approach 1:
The target holding jig is designed with movable components that allow dynamic adjustment along the object surface. The guide portion can be positioned at different locations along the plate-shaped object, and the target can be moved to each position while maintaining proper contact alignment. This dynamic capability enables measurement at multiple points without compromising contact position accuracy, as the guide portion ensures correct positioning at each measurement location.
3Stability of the object's composition
If a rigid target holding structure is used, then the target position is stable, but the device complexity increases
Solution Approach 1:
The target holding jig is divided into separate functional segments: a supporting portion for holding the target, a guide portion for regulating contact position, and a coupling portion for attaching to the object. This segmentation allows each component to perform its specific function efficiently without requiring the entire structure to be overly complex. The modular design achieves target position stability through coordinated action of simple, well-defined segments rather than through complex integrated structures.
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 target holding jig ensures high-accuracy contact between the spherical target and the object, reducing measurement errors and enabling precise distance and angle measurements, especially for thin plate-shaped objects like seal fins.
Implementation Method 1
a target (8) including a reflection mechanism for reflecting measurement light emitted from a light source
Data Source
AI summary
The target holding jig which holds a spherical target including a reflection mechanism for reflecting measurement light emitted from a light source, and brings the target and an end surface of an object to be measured into contact with each other, includes a supporting portion configured to support the target being in contact with the object to be measured, a guide portion disposed on a side of the supporting portion facing the object to be measured, regulating a contact position of the target with the object to be measured in a short side direction of the end surface of the object to be measured, and restricting the movement of the target in the short side direction of the end surface of the object to be measured, and a coupling portion fixed to the supporting portion, and removably coupled to the object to be measured.