Timepiece Component Surface Marking With Etched Material-Filled Cavities
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Solution Overview
Problem
Decorating or marking timepiece movement components is challenging due to their small size and precise geometry, which requires methods that do not compromise functionality or aesthetics.
Innovation Solution
A method involving etching of the component's surface using deep reactive ion etching by photolithography to create cavities, followed by material deposition within these cavities, allowing for visible markings without affecting the component's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If marking or decoration methods are applied to timepiece movement components, then visual attractiveness is improved, but the precise geometry and functionality of the component may be impaired
Solution Approach 1:
The patent applies decoration only to specific exterior surfaces of the component that are not critical for functionality. By limiting the etching and material deposition to non-critical zones, the visual attractiveness is enhanced while the precise geometry and functionality of the critical parts remain preserved.
Solution Approach 2:
The etching depth is controlled to be shallow, only penetrating the non-critical exterior portions of the component. This partial action allows decoration to be applied without excessively removing material that would compromise the component's functional geometry or structural integrity.
2Illumination intensity
If deep etching is performed to create visible markings, then visual effect is improved, but the structural integrity and precision of the component is worsened
Solution Approach 1:
The etching process is localized to specific exterior surfaces that do not require high geometric precision for functionality. By confining the etching to these non-critical zones, visible markings are created without affecting the precision of the functional geometry.
Solution Approach 2:
The etching depth is deliberately limited to a shallow level, sufficient to create visible markings but not deep enough to compromise the component's structural integrity or precise geometric requirements.
3Illumination intensity
If material is deposited in etched cavities for decoration, then aesthetic appearance is improved, but the complexity of the manufacturing process increases
Solution Approach 1:
The patent combines the etching process with subsequent material deposition in a integrated sequence. By merging these steps and using the etched cavities as preparation for material deposition, the aesthetic appearance is enhanced while the overall process complexity is managed through systematic integration of steps.
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
This method enables attractive visual effects on timepiece movement components, such as hairsprings, by creating shallow cavities and depositing materials like metals or luminescent composites, ensuring the markings are legible and functional.
Implementation Method 1
Etching said surface of the timepiece movement component or a blank of the component to form at least one cavity; Said etching may advantageously implement deep reactive ion etching by photolithography through a mask
Implementation Method 2
Depositing a material in said at least one cavity
Data Source
AI summary
The method for manufacturing a timepiece movement component (1) having at least a first portion comprising a surface (11), in particular an upper surface, includes etching (E3) the surface (11) of the timepiece movement component (1) or of a blank (1a) of the timepiece movement component (1) in order to form at least one cavity (7); and depositing a material (E4) in the at least one cavity (7).