Adhesive Workpiece Fixing Element for Carrier Positioning

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Solution Overview

Problem

Existing devices for fixing workpieces to carriers are structurally complex, heavy, and require significant manual effort for attachment and detachment, making the process time-consuming.

Innovation Solution

A device featuring a detachable contact and fixing element with shaped surfaces for adhesive connection, magnetic positioning, and mechanical release mechanisms, allowing for quick and easy attachment and separation without manual complexity, and enabling flexible positioning without guides.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If guides are used to position workpieces on carriers, then positioning accuracy is improved, but device complexity and weight increase

Engineering Contradiction:
Improvepositioning accuracyVSAvoidstructural complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent removes the guide structure from the workpiece carrier entirely. Instead of having guides that constrain workpiece positioning, the invention uses adhesive bonding to attach workpieces directly to the carrier surface, extracting the positioning function from mechanical guides and replacing it with a simpler adhesive-based system.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical guide system with an adhesive bonding system. The guide structure that mechanically constrained workpiece position is substituted by adhesive layers that bond workpieces to the carrier, eliminating the need for complex mechanical guiding infrastructure.

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

2Manufacturing precision

If guides are used to fix workpieces, then positioning is improved, but weight of the carrier increases

Engineering Contradiction:
Improvepositioning accuracyVSAvoidcarrier weight
Core Design Contradiction:
Manufacturing precisionVSWeight of stationary object

Solution Approach 1:

The guide structure is completely removed from the carrier design. The positioning function previously provided by heavy mechanical guides is extracted and replaced by a lightweight adhesive bonding system, significantly reducing the overall weight of the workpiece carrier assembly.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If adjustment elements in guides are used, then workpiece fixing is achieved, but attachment and detachment becomes time-consuming

Engineering Contradiction:
Improveworkpiece fixingVSAvoidattachment and detachment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent employs disposable adhesive bonds for fixing workpieces to the carrier. After use, the adhesive connection can be broken and the workpiece removed without needing to detach complex adjustment elements from guides. The adhesive serves its purpose once and is then discarded, enabling rapid workpiece changeover.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

4Manufacturing precision

If guides are used for workpiece positioning, then positioning accuracy is improved, but guides stick repeatedly causing operational issues

Engineering Contradiction:
Improvepositioning accuracyVSAvoidoperational reliability
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The guide structure that causes sticking problems is completely removed from the system. Workpieces are positioned and fixed using adhesive bonding instead of mechanical guides, eliminating the sticking issue entirely while maintaining positioning accuracy through the adhesive bonding process.

Inventive Principle:
Principle #2Taking out (Extraction)

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 rapid and effortless fixing and separation of workpieces from carriers, reduces manual effort, and prevents sticking issues, while allowing for various adhesive forms and easy cleaning.

Implementation Method 1

with at least one first shaped body surface (18) for receiving a first adhesive volume (20) and for fixing an adhesive surface (26) of the workpiece (12) with the positioning and fixing element (16) and at least one second shaped body surface (22) for receiving a second adhesive volume (24) and for fixing a support and adhesive surface (28) of the workpiece carrier (14) with the positioning and fixing element (16)

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Implementation Method 2

The positioning device comprises at least one first magnetic element, the first magnetic element for positioning being magnetically attachable to at least one second magnetic element, which is formed in the area of the support and adhesive surface (28) of the workpiece carrier (14)

Methodology Applied
Scientific EffectMagnetic positioning: Magnetism

Data Source

PatentEP2408595B1Device for fixing workpieces on a workpiece carrier and method for machining workpieces
Publication Date: 2016.08.31 MTU AERO ENGINES GMBH
  • EP2408595B1 patent drawingFigure 1~2
  • EP2408595B1 patent drawingFigure 3~4
  • EP2408595B1 patent drawingFigure 5~6

AI summary

The present invention relates to a device (10) for fixing at least one workpiece (12) on at least one workpiece carrier (14) having at least one engaging and fixing element (16) for releasably disposing between the workpiece (12) and the workpiece carrier (14), wherein at least one first mold surface (18) is designed for receiving a first volume of adhesive (20) and for fixing an adhesive surface (26) of the workpiece (12) to the engaging and fixing element (16). According to the invention, at least one second mold surface (22) of the engaging and fixing element (16) is designed for receiving a second volume of adhesive (24) and for fixing a contact and adhesive surface (28) of the workpiece carrier (14) to the engaging and fixing element (16). The invention further relates to a method for machining workpieces.