RF Layer Alignment Features for Additive Manufacturing Inspection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Layered additive manufacturing (LAM) processes for radio-frequency (RF) electronics face challenges in aligning and inspecting multi-material layers for high-quality RF performance, especially in ultra-high vacuum operations, where existing methods lack precision in positional and rotational accuracy.
Innovation Solution
Incorporating geometric features such as pockets, bosses, alignment vias, and inspection features like concentric-circular, stair-step, and stair-pattern patterns across layers to facilitate alignment and post-bonding inspection, ensuring precise positional and rotational alignment of RF structures like waveguides and Traveling Wave Tubes (TWTs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional layered additive manufacturing processes are used for RF electronics, then manufacturing capability is achieved, but alignment precision and rotational accuracy between layers deteriorate
Solution Approach 1:
The patent applies preliminary action by incorporating alignment features (pockets, bosses, alignment holes) and inspection features into the layer designs before the bonding process. These features are pre-positioned to guide accurate alignment during assembly and enable post-bonding verification, thereby achieving high manufacturing precision without requiring complex real-time adjustment mechanisms during the bonding process.
Solution Approach 2:
The patent uses alignment features such as pockets, bosses, and alignment holes as intermediary elements between layers. These intermediaries facilitate precise positioning and alignment during assembly by providing mechanical guidance and reference points, thereby improving alignment precision without directly modifying the bonding process itself.
2Manufacturing precision
If alignment features are added to layers, then alignment precision improves, but manufacturing complexity increases
Solution Approach 1:
The patent segments the alignment and inspection functions into distinct geometric features (pockets, bosses, alignment holes, inspection patterns) that can be independently designed and manufactured. This segmentation allows each feature to be optimized for its specific function while using standard additive manufacturing capabilities, thereby maintaining manufacturing ease while achieving high positional accuracy.
Solution Approach 2:
The patent employs parameter changes by varying the geometric parameters of alignment features (such as hole diameters, pocket dimensions, and feature positions) to achieve the desired alignment precision. These parameter adjustments are made within the capabilities of existing additive manufacturing processes, allowing high positional accuracy to be achieved without fundamentally changing the manufacturing method.
3Measurement precision
If inspection features are incorporated across layers, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent merges the alignment features and inspection features into a unified geometric structure that serves both functions simultaneously. For example, alignment holes also serve as inspection references, and pockets are designed to facilitate both mechanical alignment and optical inspection. This merging reduces the need for separate alignment and inspection mechanisms, thereby improving measurement precision without proportionally increasing device complexity.
Solution Approach 2:
The patent applies universality by designing geometric features that serve multiple functions. Alignment pockets and holes are configured to provide both mechanical alignment guidance and optical inspection references. This multi-functionality allows a single feature to contribute to both alignment precision and measurement precision, thereby reducing the overall structural complexity while achieving high inspection accuracy.
Data Source
AI summary
A method of manufacturing a radio frequency (RF) or electron beam structure, comprises forming each layer of multiple layers to be assembled and bonded together with positional alignment, the forming each layer including forming a first via segment of a first particular shape and dimension in the layer at a first location in the layer, such that when the first via segments of the multiple layers are assembled with positional alignment the multiple first via segments align to form a first via; and inserting a first analogous pin into the first via, the first analogous pin being formed based on the first particular shape and dimension of each of the first via segments, such that inserting the first analogous pin into the first via assists in causing the multiple layers to be assembled with positional alignment.