Guided Sheet Metal Edge Cutter for Precise Weld Seam Removal

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Solution Overview

Problem

Existing methods for removing sheet metal edges, particularly in vehicle repair, are cumbersome and risk damaging the body structure due to the difficulty in precisely cutting narrow edges using saws or abrasive methods like angle grinders.

Innovation Solution

An edge removal tool with a rotating chipping tool and a guide system that allows for precise movement along the sheet metal edge, featuring a milling cutter design with adjustable penetration depth to accommodate various angles and positions, ensuring accurate cutting of folded or assembled sheet metal edges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If abrasive methods like angle grinder are used to cut sheet metal edges, then cutting capability is improved, but precision and risk of damage to surrounding structures worsen

Engineering Contradiction:
Improvecutting capabilityVSAvoidcutting precision
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

A guide element is introduced as an intermediary between the cutting tool and the workpiece. This guide element runs along the edge to be cut and provides precise positioning, enabling accurate cutting while protecting surrounding areas from damage.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces abrasive cutting methods with a mechanical cutting system using a rotating cutting tool (milling cutter or similar). This mechanical approach, combined with the guide element, provides cleaner cuts with less risk of damaging adjacent bodywork.

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

2Manufacturing precision

If guide elements are added to improve cutting precision, then manufacturing precision is improved, but device complexity worsens

Engineering Contradiction:
Improvecutting precisionVSAvoidtool structure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The tool is divided into separate functional modules: a cutting tool portion and a guide element portion. These can be used separately or combined, allowing users to select only the components needed for their specific task, thereby reducing overall complexity while maintaining precision capabilities.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The guide element is designed to be versatile, capable of guiding various types of cutting tools (abrasive, mechanical, etc.). This multi-functionality reduces the need for multiple specialized tools, simplifying the overall device set while maintaining high precision.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If the cutting tool is designed to handle folded sheet metal with various angles, then adaptability is improved, but device complexity worsens

Engineering Contradiction:
Improveangle accommodation capabilityVSAvoidadjustment mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The tool incorporates adjustable components that can be dynamically reconfigured for different working conditions. The guide element and cutting tool can be adjusted to accommodate various sheet metal angles and fold configurations, enabling the tool to adapt to different geometries without requiring multiple specialized tools.

Inventive Principle:
Principle #15Dynamics

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 simple and precise removal of sheet metal edges, reducing the risk of damaging surrounding structures and accommodating edges with angles up to 90 degrees, thus improving the efficiency and accuracy of the process.

Implementation Method 1

a rotating cutting tool (12), in particular a milling cutter

Methodology Applied
Scientific EffectMechanical cutting:

Data Source

PatentEP3846958B1Edge-removing tool for sheet metal
Publication Date: 2024.10.02 WS WIELANDER SCHILL PROFESSIONELLE KAROSSERIE SPEZIALWERKZEUGE GMBH & CO KG
  • EP3846958B1 patent drawingFigure 1
  • EP3846958B1 patent drawingFigure 2
  • EP3846958B1 patent drawingFigure 3

AI summary

The invention relates to an edge-removing tool for sheet metal, comprising a head with a rotating cutting tool, wherein the head has at least one guide for an edge. The head preferably comprises a sleeve comprising the guide, and the tool can be used to separate edges of an angled and/or welded sheet metal connection.