Modular Isotropic Lattice Extruder System for Scalable Assembly
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Solution Overview
Problem
Existing methods for assembling digital material structures from discrete parts are limited by scalability, reversibility, and the need for manual assembly, which restricts throughput and scale, especially in creating volumetric structures with high performance and structural integrity.
Innovation Solution
A system that uses triangular base elements to form discrete cellular lattices through three assembly strategies: mechanical timing, distance constraints, and the Modular Isotropic Lattice Extruder System (MILES), which enables the creation of rigid or deformable lattice structures by interlocking elements into a rigid structure, leveraging error correction and interlocking properties for precise assembly with imprecise tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual assembly methods are used for discrete cellular lattices, then assembly precision can be achieved through interlocking, but throughput and scale are limited
Solution Approach 1:
The discrete parts are designed with self-aligning and self-locking features that enable automatic assembly without complex external positioning systems. The interlocking geometry inherently guides parts into correct positions, allowing high-speed assembly while maintaining precision.
Solution Approach 2:
The lattice structure is divided into discrete modular parts that can be manufactured separately and assembled systematically. This segmentation enables parallel manufacturing of multiple components and simplifies the assembly process into repetitive, high-speed operations.
2Productivity
If 3D printing of lattices is used, then ultralight high performance structures are achieved, but scalability beyond the printing machine is limited
Solution Approach 1:
The lattice is manufactured as discrete parts that can be produced using high-speed, automated processes. These segmented components maintain precision through standardized interlocking features while enabling scalable production beyond single-printing-machine constraints.
Solution Approach 2:
The discrete lattice parts serve as intermediaries between manufacturing and final assembly. They are pre-manufactured with precise interlocking features, then rapidly assembled into large-scale structures, decoupling the precision manufacturing step from the scaling step.
3Reliability
If discrete parts are assembled with imprecise tools, then fault tolerance and error correction are enabled, but assembly precision requires passive constraint mechanisms
Solution Approach 1:
The parts incorporate self-aligning geometric features that automatically correct positioning errors during assembly. The interlocking geometry itself provides the constraint mechanism, eliminating the need for external positioning devices or complex control systems.
Solution Approach 2:
The discrete part design includes built-in tolerance compensation features that absorb and correct for manufacturing variations before final assembly. This beforehand cushioning allows imprecise tools to be used while maintaining final assembly precision and structural reliability.
4Strength
If traditional lattice assembly methods are used, then structural integrity is achieved, but the need for external fasteners and binders increases device complexity
Solution Approach 1:
The structural load-bearing function and the connection function are merged into a single interlocking feature. The discrete parts connect through integrated geometric interfaces that simultaneously provide mechanical strength and structural integrity, eliminating separate fasteners and binders.
Solution Approach 2:
The external fastening and binding systems are extracted and replaced by inherent interlocking features of the discrete parts themselves. This takes out the complexity of external connection mechanisms while maintaining or enhancing structural integrity through the unified part design.
Data Source
AI summary
A set of machines and related systems build structures by the additive assembly of discrete parts. These digital material assemblies constrain the constituent parts to a discrete set of possible positions and orientations. In doing so, the structures exhibit many of the properties inherent in digital communication such as error correction, fault tolerance and allow the assembly of precise structures with comparatively imprecise tools. Assembly of discrete cellular lattices by a Modular Isotropic Lattice Extruder System (MILES) is implemented by pulling strings of lattice elements through a forming die that enforces geometry constraints that lock the elements into a rigid structure that can then be pushed against and extruded out of the die as an assembled, load bearing structure.