Adjustable Timepiece Assembly with Micrometric Pivot Alignment
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Solution Overview
Problem
Existing timepiece mechanisms face challenges in achieving high precision alignment of pivot points due to manufacturing tolerances, which can result in significant alignment errors, particularly in complex geometries that are difficult to produce and maintain a traditional aesthetic appearance.
Innovation Solution
An adjustable timepiece assembly featuring a base bar and an adjustable bar that are angularly adjustable via press-fit pinions and toothed sectors, allowing precise micrometric adjustments along two axes while maintaining a traditional aesthetic appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complex geometry bars are used to adjust pivot point positions, then alignment precision is improved, but manufacturing difficulty increases
Solution Approach 1:
The bar is divided into multiple modular components: a base bar with mounting members, adjustable bars with connection members, and micrometric displacement mechanisms. This segmentation allows each component to be manufactured separately using standard processes, then assembled to achieve the required alignment precision without requiring complex monolithic geometries.
Solution Approach 2:
Micrometric displacement mechanisms serve as intermediary elements between the base bar and adjustable bars. These mechanisms enable precise position adjustment through standardized threaded connections, avoiding the need to manufacture complex adjustable geometries directly into the bars themselves.
2Shape
If traditional aesthetic appearance is maintained, then visual appeal is preserved, but adjustment mechanism complexity increases
Solution Approach 1:
The adjustment mechanisms are extracted and positioned on the periphery of the bar assembly, separate from the main visible bar structure. This allows the bars themselves to maintain traditional aesthetic appearances while the adjustment mechanisms, which add complexity, are located in less visually prominent areas or integrated into mounting structures.
Solution Approach 2:
The adjustment mechanism uses standardized micrometric displacement components that are replicated from existing precision engineering solutions. This allows complex adjustment functionality to be achieved through copying proven designs rather than creating entirely new complex mechanisms, simplifying the overall design process.
3Measurement precision
If micrometric displacement mechanism is used, then position adjustment precision is improved, but device complexity increases
Solution Approach 1:
The micrometric displacement mechanisms utilize standardized threaded parameters and pitch dimensions that are commonly available in precision engineering. By changing to these standardized parameters, high precision adjustment is achieved without requiring custom-designed complex mechanisms, as the thread geometry and lead screws are well-established standard components.
Data Source
AI summary
An adjustable timepiece assembly, including a base bar and an adjustable bar whose position is adjustable with respect to the base bar, parallel to a reference plane, the adjustable assembly includes a first part guided in rotation on a first pin integral with the base bar and which includes a first toothed sector meshing with a first adjustment pinion press fit in the base bar, and which is subjected to the return force exerted by a first return spring to take up play, and the adjustable bar is guided in rotation on a second pin integral with the first part, and includes a second toothed sector meshing with a second adjustment pinion press fit in the first part, the adjustable bar being subjected to the return force of a second return spring.