Measuring Tool Centring Coaxial Bores Positioning
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Solution Overview
Problem
Existing measuring tools face challenges in accurately positioning themselves relative to production parts, particularly in coaxial bores, which affects the precision and reliability of dimensional characteristic measurements.
Innovation Solution
A measuring tool with first and second centring means that contact coaxial bores and mechanical link means allowing relative displacement of measuring apparatuses, enabling precise positioning and tracing of inner surfaces within these bores, thereby defining measurement areas and limiting degrees of freedom to prevent measurement falsification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional positioning methods are used, then the measuring tool can be positioned on the production part, but the positioning accuracy is insufficient and measurement reliability is compromised
Solution Approach 1:
The positioning system is divided into two independent centring means, each responsible for positioning in one coaxial bore. This segmentation allows each component to focus on a specific positioning task, improving overall positioning accuracy and reliability by reducing the complexity of positioning multiple features simultaneously.
Solution Approach 2:
The mechanical link means act as an intermediary between the positioning means and the measuring apparatus. This intermediary component transmits and maintains the positioning relationship, ensuring that the measuring apparatus accurately reflects the position defined by the centring means in both coaxial bores.
2Ease of operation
If the measuring apparatus is allowed to move freely, then ease of operation is improved, but positioning stability and measurement reliability deteriorate
Solution Approach 1:
The system provides dynamic positioning capability through the mechanical link means, allowing the measuring apparatus to move within defined limits while maintaining its positional relationship with the centring means. This dynamic design enables easy operation for measuring different points on the inner surfaces while preserving positioning stability through the constrained movement mechanism.
3Adaptability or versatility
If multiple measurement points are to be traced, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The measuring apparatus is designed with universal capability to measure multiple dimensional characteristics by tracing different points on the inner surfaces of the coaxial bores. The same basic apparatus, when displaced by the mechanical link means, can perform various measurement functions, reducing the need for multiple specialized tools and minimizing overall device complexity.
Data Source
AI summary
A measuring tool (1) for measuring dimensional characteristics (D) of a production part (2). The tool (1) comprises a unit (3a, 3b) for positioning the measuring tool (1) relative to the part (2) and at least one measuring apparatus (4a, 4b) mechanically linked to the positioning unit (3a, 3b) by a mechanical link (5). The positioning unit (3a, 3b) comprises a first centring device (6a) for coming into contact against an inner surface (7a) of a first bore (22a1) of the production part (2) and a second centring device (6b) for coming into contact against an inner surface (7b) of a second bore (22b1) of the production part (2), the first and second bores (22a1,22b1) being coaxial. The mechanical link (5) allows the relative displacement of the measuring apparatus (4a, 4b) relative to the first and second centring devices (6a, 6b).