Pivoting Fixture Block With Stop Key Mechanism
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Solution Overview
Problem
Existing fixturing devices lack accuracy and are not designed for heavy test features in harsh environments, and they often require unnecessary travel for feature positioning, which affects precision and reliability.
Innovation Solution
A pivoting fixture device with a low-profile, modular design using a pivot pin and stop key mechanism, composed of high-strength materials like hot-rolled steel, allowing for precise location and locking of check features with improved ergonomics and one-handed operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hinges and similar devices are used for fixturing, then the device can be simple in structure, but the accuracy and reliability are insufficient for heavy test features in harsh environments
Solution Approach 1:
The fixture is divided into modular components including a base, platform, pivot pin, stop key, and locking mechanism. Each component serves a specific function and can be independently manufactured and assembled, allowing the system to achieve high reliability through modular design while maintaining reasonable complexity
Solution Approach 2:
The platform is designed to pivot dynamically about a fixed axis defined by the pivot pin, allowing the fixture to adapt to different test feature positions and orientations. The stop key provides dynamic locking capability that can be engaged or disengaged as needed, enhancing reliability without requiring a completely rigid fixed structure
2Measurement precision
If features are positioned with unnecessary travel, then the device can be simpler to operate, but the precision and accuracy of locating positions are reduced
Solution Approach 1:
The stop key is pre-configured with a tapered surface that guides the platform into the precise locating position during the locking action. This preliminary guidance ensures that the platform reaches the correct position accurately without requiring excessive travel or complex adjustment mechanisms, maintaining both precision and operational simplicity
Solution Approach 2:
The stop key acts as an intermediary element between the operator's locking action and the platform's final position. The tapered surface of the stop key mediates the transition, guiding the platform smoothly and accurately into the locating position while minimizing unnecessary travel and maintaining operational ease
3Area of stationary object
If a low-profile modular design is used, then the device footprint is reduced and ergonomics are improved, but the strength and durability for heavy test features must be maintained
Solution Approach 1:
The fixture components are manufactured from high-strength steel materials that provide the necessary structural strength and durability to handle heavy test features. The use of strong materials allows the fixture to maintain a compact low-profile design while still achieving the required strength and durability for harsh environment applications
Solution Approach 2:
The modular segmented design allows each component (base, platform, pivot pin, stop key) to be optimized for its specific function while maintaining overall compactness. The segmentation enables a smaller footprint by eliminating unnecessary structural elements between modules, while the strong materials ensure each module maintains the required strength for heavy test features
Data Source
AI summary
The present disclosure relates generally to fixturing devices and more specifically to a pivoting fixture device configured to locate and lock a check feature in a precise location.