3D Printed Antenna Flange Geometry Without Support Structures
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Solution Overview
Problem
Conventional methods for additive manufacturing of antennas, particularly flanges, face challenges such as deformation, shrinkage, and the need for secondary support structures, leading to non-functional or sub-optimal antenna performance due to geometric constraints and material limitations.
Innovation Solution
The development of novel flange geometry with an angled and horizontal portion that diverges from the elongate body at an acute angle, allowing for integrally formed, additively manufactured flanges that reduce melt pool area and eliminate the need for secondary supports, enhancing dimensional stability and enabling precise geometric control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional flange designs are used in additive manufacturing, then the antenna component can be produced, but geometric distortion and deformation occur due to material shrinkage at transitions
Solution Approach 1:
The flange geometry parameters are specifically modified to include an angled portion (e.g., 45-degree angle) between the horizontal flange surface and the vertical wall, and optimized thickness ratios. These parameter changes prevent excessive melt pool area during additive manufacturing, eliminating the need for support structures and preventing geometric distortion while maintaining manufacturing precision
Solution Approach 2:
The flange design transitions from a simple two-dimensional perpendicular extension to a three-dimensional angled structure. By adding the angular dimension between the horizontal and vertical portions, the design accommodates the build direction requirements of additive manufacturing while maintaining functional integrity
2Manufacturing precision
If support structures are used during additive manufacturing of flanges, then geometric stability is improved, but production time and complexity increase
Solution Approach 1:
The flange geometry is pre-designed with built-in stability features (angled portions and optimized thickness) that prevent deformation before printing begins. This preliminary geometric configuration eliminates the need for support structures during the additive manufacturing process, reducing production time while maintaining geometric stability
Solution Approach 2:
The flange structure is designed to be self-supporting during additive manufacturing through its angled geometry and optimized dimensions. The structure serves itself by providing inherent stability without requiring external support structures, thereby eliminating additional post-processing tasks and reducing production complexity
3Ease of operation
If conventional flange geometry is used, then mounting functionality is provided, but material shrinkage causes circumferential recesses and deformities on the inner surface
Solution Approach 1:
The flange parameters (angle, thickness, radius) are optimized to control material shrinkage during additive manufacturing. The angled portion and specific thickness ratios ensure uniform cooling and solidification, preventing circumferential recesses and deformities that would compromise antenna performance consistency while maintaining mounting functionality
Solution Approach 2:
Different portions of the flange have different geometric qualities optimized for their specific functions: the angled portion is optimized for additive manufacturing stability, the horizontal portion for mounting functionality, and the thickness distribution for controlling shrinkage. This local optimization ensures both operational capability and performance reliability
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 solution enables the 3D printing of antenna components with improved dimensional stability, reduced deformation, and consistent geometry, resulting in functional antennas with optimized performance and reduced production costs and time.
Implementation Method 1
Each time a new layer of raw material (typically granules or powder) is deposited, it is then selectively joined or fused by a heat source to build (i.e., 'print') the desired object. Common raw materials may include thermoplastic polymer, metal powder, metal alloy powder, or ceramic powder, while heat sources are often computer-controlled laser or electron beams.
Implementation Method 2
Examples of additive manufacturing techniques include selective laser melting, direct metal laser sintering, selective laser sintering, fused deposition modeling, and electron beam melting.
Implementation Method 3
Examples of additive manufacturing techniques include selective laser melting, direct metal laser sintering, selective laser sintering, fused deposition modeling, and electron beam melting.
Implementation Method 4
disclosed flange geometry for antenna components may reduce the melt pool area at the flange cross-section
Data Source
AI summary
Antenna components include an additively manufactured elongate body portion and one or more additively manufactured flanges. The elongate body portion extends from a base portion to an aperture opposite the base portion. The elongate body portion is at least substantially hollow and is configured to direct radio frequency signals. Each flange extends radially outwardly from the elongate body portion and around an outer circumference of the elongate body portion. Each flange is integrally formed with the elongate body portion, and includes an angled portion and a horizontal portion. The angled portion of the flange diverges from the elongate body portion at an acute angle, and the horizontal portion is at least substantially perpendicular to a longitudinal axis of the elongate body portion. Satellite systems including said antenna components also are disclosed, along with related methods of additively manufacturing antenna components with integral flanges.