Arc Weld Bead Lamination With Table Tilting for Large Metal Builds

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Solution Overview

Problem

Existing metal laminating and modeling methods face challenges in forming large modeled objects without significantly increasing the size of the apparatus, particularly due to the need for a large gate-shaped frame.

Innovation Solution

A metal laminating and modeling method that utilizes a rotatable and tiltable table with a movable welding torch, allowing for the formation of weld beads on a horizontal surface and at varying angles to create large modeled objects without enlarging the apparatus footprint.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a gate-shaped frame with welding torch is used for metal laminating and modeling, then weld beads can be formed by arc discharge, but the apparatus size becomes large when forming large modeled objects

Engineering Contradiction:
Improveweld bead formation qualityVSAvoidapparatus size
Core Design Contradiction:
Manufacturing precisionVSArea of stationary object

Solution Approach 1:

The patent divides the gate-shaped frame into a movable section and a fixed section. The movable section can be moved along the fixed section, allowing the welding torch to reach different positions without requiring the entire frame to be large. This segmentation enables compact apparatus design while maintaining the capability to form weld beads for large modeled objects.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces movability to the gate-shaped frame structure. By making part of the frame movable rather than fixed, the apparatus can adapt its configuration to accommodate large modeled objects without permanently requiring a large apparatus size. The movable section adjusts its position dynamically during the welding process.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If the table is inclined at a larger angle for modeling, then the flow of molten metal can be controlled, but the welding torch configuration becomes more complex

Engineering Contradiction:
Improvesurface quality of modeled objectVSAvoidtorch inclination angle adjustment mechanism
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent combines the table inclination function with the torch inclination function into a coordinated system. Both the table and the welding torch are inclined at corresponding angles, and their inclination mechanisms are linked or synchronized. This merging approach allows the system to handle molten metal flow control efficiently without requiring entirely separate complex adjustment mechanisms for each component.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables the formation of large modeled objects while keeping the apparatus size manageable, improving the quality and reducing the risk of the modeled object falling during formation, and allowing for complex shapes without additional processing.

Implementation Method 1

forming a weld bead that becomes a part of the modeled object by arc welding with the welding torch

Methodology Applied
Scientific EffectArc welding: Electric Arc

Data Source

PatentEP3868505B1Metal laminating and modeling method
Publication Date: 2026.04.29 MITSUBISHI HEAVY INDUSTIES COMPRESSOR CORP
  • EP3868505B1 patent drawingFigure 1
  • EP3868505B1 patent drawingFigure 2~3
  • EP3868505B1 patent drawingFigure 4

AI summary

A metal laminating and modeling method includes a first inclination angle modeling step including a first inclination step of setting a table on which the metal layers are to be formed at a first table inclination angle and setting a welding torch at a first torch inclination angle and a first welding step of forming a weld bead that becomes a part of the modeled object by arc welding with the welding torch and a second inclination angle modeling step including a second inclination step of inclining the table at a second table inclination angle that is larger than the first table inclination angle and setting the welding torch at a second torch inclination angle and a second welding step of forming the weld bead.