Spool-Fed Friction Stir Deposition for Uniform Wire Feed

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Solution Overview

Problem

Existing additive friction stir deposition systems face inefficiencies due to time-consuming bar preparation, frequent reloading by human operators, non-uniform material flow, and potential defects during transitions, leading to inhomogeneous material addition and quality issues.

Innovation Solution

A manufacturing installation featuring a spool of manufacturing material with a neutral fiber, a rotary unwinding device, and a guiding device that unwinds and guides the material in a controlled, symmetrical trajectory, ensuring uniform feed and reduced operator risk.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If bars of manufacturing material with square cross-section are used in barrels or magazines, then the material can be fed to the manufacturing system, but the material flow becomes non-uniform and defects are introduced during transitions between bars

Engineering Contradiction:
Improvemanufacturing efficiencyVSAvoidmaterial flow uniformity
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The invention changes the shape parameter of the manufacturing material from square cross-section bars to circular cross-section wire, and changes the feeding mechanism from discrete bar loading to continuous wire unwinding. This parameter change eliminates transitions between discrete material units, ensuring uniform material flow and eliminating defects associated with bar transitions while maintaining high manufacturing efficiency

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The wire is pre-coiled into spools with controlled geometry and tension characteristics before being loaded into the feed system. This preliminary preparation ensures that the wire unwinds uniformly and consistently during manufacturing, eliminating the need for frequent reloading operations and maintaining steady material flow throughout the manufacturing process

Inventive Principle:
Principle #10Preliminary action

2Reliability

If barrels or magazines are frequently reloaded with bars by human operators, then continuous material supply is maintained, but operator risk increases and manufacturing complexity increases

Engineering Contradiction:
Improvecontinuous material supplyVSAvoidoperator risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The feed system is designed to automatically unwind and feed the wire from pre-prepared spools without requiring human operators to manually reload material during manufacturing. The system self-regulates the wire feed through tension control mechanisms and automated spool rotation, eliminating operator exposure to hazardous areas while maintaining continuous material supply

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Material is pre-loaded onto spools in a safe, controlled environment before manufacturing begins. This preliminary action removes the need for operators to handle hot or hazardous material during active manufacturing, eliminating the associated risks while ensuring continuous material availability throughout the manufacturing process

Inventive Principle:
Principle #10Preliminary action

3Quantity of substance

If square cross-section bars are used, then material can be stored in barrels or magazines, but preparation of bars is time-consuming and tedious

Engineering Contradiction:
Improvematerial storage capacityVSAvoidbar preparation time
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The invention changes the material form from square bars requiring precise dimensional preparation to circular wire that can be directly wound onto spools. This parameter change eliminates the time-consuming bar preparation step while maintaining adequate material storage capacity through the use of large-diameter spools that can hold extensive wire lengths

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

Wire is pre-coiled onto spools in advance with controlled tension and geometry, eliminating the need for on-demand bar preparation. This preliminary coiling action stores large quantities of material in a ready-to-feed state, eliminating preparation time during manufacturing while maintaining sufficient material supply for extended production runs

Inventive Principle:
Principle #10Preliminary action

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

The installation provides a fast, efficient, and safer process for manufacturing high-quality objects by ensuring uniform material flow and minimizing defects, enhancing operational safety and product consistency.

Implementation Method 1

additive friction stir deposition

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS12440918B2Installation for manufacturing a manufactured object by additive friction stir deposition and associated manufacturing method
Publication Date: 2025.10.14 DASSAULT AVIATION SA
  • US12440918B2 patent drawing
  • US12440918B2 patent drawing
  • US12440918B2 patent drawing

AI summary

An manufacturing installation for manufacturing a manufactured object by additive friction stir deposition includes a manufacturing system configured to manufacture a manufactured object by additive friction stir deposition from a manufacturing material, and a feed system configured to feed the manufacturing system with manufacturing material. The feed system includes a spool of a manufacturing material wire wound about a spool axis; an unwinding device configured to unwind the wire, to drive the spool in rotation about a principal axis of rotation and to drive the wire in rotation about its neutral fiber; and a device for guiding the unwound wire to the manufacturing system.