Mobile Additive Manufacturing With Feedback-Guided Large-Area Deposition

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Solution Overview

Problem

Current additive manufacturing technologies are limited by the dimensions of objects that can be produced, as they are often restricted by the workspace and mobility of the manufacturing apparatus, which hinders the creation of complex shapes and large-scale structures.

Innovation Solution

The development of mobile additive manufacturing systems, such as the Addibot, which combines robotic mobility with advanced navigation, control, and sensing systems to enable the independent and automated deposition of materials across large areas, allowing for the creation of complex shapes and structures by using multiple materials and algorithms to guide the additive manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of stationary object

If traditional additive manufacturing apparatus are used, then manufacturing precision can be maintained, but the workspace dimensions and object size are limited

Engineering Contradiction:
Improveobject sizeVSAvoidapparatus mobility
Core Design Contradiction:
Volume of stationary objectVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by transforming the additive manufacturing apparatus from a static configuration to a mobile robotic system. The apparatus incorporates robotic manipulators with multiple degrees of freedom that can dynamically reposition the print head throughout a large workspace, enabling the fabrication of oversized objects while maintaining manufacturing precision through real-time coordinate control and path planning algorithms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements dimensionality change by extending the traditional two-dimensional XY plane movement to include vertical Z-axis movement and rotational degrees of freedom. This multi-dimensional mobility allows the extrusion head to access any location within a large three-dimensional workspace, effectively removing the size constraints of conventional desktop 3D printers while maintaining precision through coordinated multi-axis control systems.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Volume of stationary object

If the workspace dimensions are increased, then larger objects can be produced, but the manufacturing precision may deteriorate

Engineering Contradiction:
Improveworkspace volumeVSAvoiddeposition accuracy
Core Design Contradiction:
Volume of stationary objectVSManufacturing precision

Solution Approach 1:

The patent applies feedback principles through integrated sensing systems that continuously monitor the position and orientation of the extrusion head, as well as the geometry of the deposited material. Real-time feedback from encoders, laser scanners, and vision systems allows the control system to compensate for positioning errors and maintain manufacturing precision across the entire large workspace through closed-loop control algorithms.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces traditional mechanical positioning systems with hybrid systems that combine robotic manipulation with computer-controlled motion. Instead of relying solely on mechanical rigidity to maintain precision over large distances, the system uses software-based path compensation, dynamic calibration, and intelligent trajectory planning to achieve accurate material deposition across extended workspaces.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Shape

If multiple materials are used to create complex shapes, then structural complexity increases, but the process control becomes more difficult

Engineering Contradiction:
Improvestructural complexityVSAvoidprocess control
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the complex multi-material fabrication process into distinct operational modules: material selection, path planning, extrusion control, and layer consolidation. Each module is independently controlled and optimized, allowing the system to handle multiple materials and complex geometries through coordinated execution of segmented tasks rather than monolithic process control.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements universality through a multi-functional robotic system that can handle various material types (thermoplastics, composites, metals) and perform multiple operations (extrusion, deposition, consolidation) using a single integrated platform. The universal end-effector design and flexible control architecture enable the same apparatus to manufacture diverse complex structures with different material combinations without requiring specialized equipment for each material type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11905667B2Methods and apparatus for mobile additive manufacturing
Publication Date: 2024.02.20 FLITSCH ROBERT A
  • US11905667B2 patent drawing
  • US11905667B2 patent drawing
  • US11905667B2 patent drawing

AI summary

The present disclosure provides various advancements for mobile and automated processing utilizing additive manufacturing. The present disclosure includes methods for the utilization of mobile and automated processing apparatus and may include examples of sealcoating operations. In some examples, omnidirectional drive systems such as Mecanum wheels may create novel operational aspects. Artificial intelligence techniques may enhance operations and may be used to create model for the processing apparatus.