Wire Cutting Orientation for Gravity-Based Part Collection

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Solution Overview

Problem

Current wire cutting apparatuses for separating parts from a base plate are laborious and costly, as they are not designed for automation or efficient collection of parts, particularly in additive manufacturing processes like DMLS, where parts protrude vertically and are difficult to collect manually.

Innovation Solution

A wire cutting apparatus that holds the base plate in a separation position such that parts protrude vertically downwards, allowing them to fall by gravity into a collecting element, enabling automated and efficient collection, with a holding device and separation element that can move relative to each other and a collecting element designed to receive and segregate the parts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If parts protrude vertically upwards from the base plate in conventional wire cutting apparatus, then the additive manufacturing process can be maintained, but the parts become difficult to collect manually and automation is cumbersome

Engineering Contradiction:
Improveease of part collectionVSAvoidautomation capability
Core Design Contradiction:
Ease of operationVSExtent of automation

Solution Approach 1:

The holding device is configured to hold the base plate in a separation position such that parts protruding from the base plate point vertically downwards along a gravitational vector, inverting the conventional upward protrusion orientation. This inversion enables parts to fall automatically into a collecting element positioned below, achieving full automation without complex collection systems

Inventive Principle:
Principle #13The other way round (Inversion)

2Productivity

If manual collection of parts is used, then no additional automated collection systems are needed, but the process becomes laborious and costly

Engineering Contradiction:
Improveproduction efficiencyVSAvoidmanufacturing cost
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The system uses gravity as a free resource to enable parts to fall automatically into the collecting element without requiring manual collection or complex automated handling systems. The holding device configures the base plate orientation so that parts naturally descend along the gravitational vector, making the collection process self-service and eliminating laborious manual operations

Inventive Principle:
Principle #25Self-service

3Extent of automation

If the base plate is held in conventional orientation, then the additive manufacturing process remains unchanged, but parts cannot fall naturally and require dedicated collection systems

Engineering Contradiction:
Improveautomated part collectionVSAvoidcollection system complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The holding device inverts the base plate orientation during the separation process, configuring it to hold parts protruding vertically downwards along the gravitational vector. This simple inversion eliminates the need for dedicated and expensive automated collection systems, achieving full automation with minimal device complexity

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The invention replaces complex mechanical collection systems with a gravity-based passive collection mechanism. By orienting the base plate so parts fall naturally along the gravitational vector, the system substitutes expensive automated handling machinery with a simple gravity-driven collection process

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

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

Facilitates a fully automated and cost-effective system for collecting and processing parts, reducing manual labor and enhancing the efficiency of additive manufacturing processes by allowing parts to fall naturally into a well-defined collection area.

Implementation Method 1

the holding device is configured to hold the base plate in the separation position in such a manner, that the at least one part protruding from the base plate points vertically downwards, i.e. along a gravitational vector. Thus, parts separated from the base plate will automatically fall in a well-defined direction, i.e. downwards, driven by gravity

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP3360636B1Wire cutting apparatus and method for separating parts from a base plate by means of a wire cutting apparatus
Publication Date: 2024.06.12 AGIE CHARMILLES SA
  • EP3360636B1 patent drawingFigure 1
  • EP3360636B1 patent drawingFigure 2
  • EP3360636B1 patent drawingFigure 3

AI summary

The invention is related to a wire cutting apparatus (1) for separating parts (3) from a base plate (5), comprising: a separation device (7), configured to separate at least one part (3) from a base plate (5) from which the at least one part (3) protrudes, and a holding device (9), configured to hold the base plate (5) in at least a separation position relative to the separation device (7). The wire cutting apparatus (1) is characterized in that the holding device (9) is configured to hold the base plate (5) in the separation position in such a manner, that the at least one part (3) protrudes downward from the base plate (5).