Adhesive Holding Element for Damage-Free Tool Guidance

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Solution Overview

Problem

Existing methods for supporting and guiding machine tools or workpieces, such as guide rails, often damage the workpiece with screws or nails and are difficult to handle, especially for precise machining tasks.

Innovation Solution

A holding element with a combination of adhesive and form-locking contours for secure attachment to a workpiece, allowing for easy replacement of worn retaining elements and enabling precise positioning of machine tools without damaging the surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If screws or nails are used to fasten the guide rail to the workpiece, then the attachment strength is improved, but the workpiece surface is damaged

Engineering Contradiction:
Improveattachment strengthVSAvoidsurface damage
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical fastening system (screws or nails) with an adhesive bonding system. The adhesive layer is applied between the guide rail and the workpiece surface, creating a chemical bond instead of a mechanical one, thereby achieving strong attachment without penetrating or damaging the workpiece surface.

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

2Object-affected harmful factors

If the guide rail is loosely placed on the workpiece with friction-fit components, then the workpiece surface is protected, but the holding stability is insufficient for precise machining

Engineering Contradiction:
Improvesurface protectionVSAvoidholding stability
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent merges two retention mechanisms into a single system: friction-fit components (such as rubber elements) and adhesive bonding. The friction-fit components provide initial positioning and protection, while the adhesive layer provides additional bonding strength, together achieving both surface protection and sufficient holding stability for precise machining.

Inventive Principle:
Principle #5Merging (Combining)

3Stability of the object's composition

If retaining elements are permanently fixed to the support body, then the structural integrity is improved, but the replaceability of worn components is lost

Engineering Contradiction:
Improvestructural integrityVSAvoidcomponent replaceability
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The patent segments the retaining element system into detachable components. The retaining elements (such as rubber friction-fit components) are made as separate, replaceable parts that can be independently removed and replaced. The support body includes receptacles or mounting structures that allow for easy installation and removal of these retaining elements, maintaining structural integrity while enabling component replaceability.

Inventive Principle:
Principle #1Segmentation

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 solution provides a firm, residue-free attachment of machine tools to workpieces, facilitating precise machining and easy replacement of retaining elements, while maintaining tool guidance and avoiding surface damage.

Implementation Method 1

an adhesive (70) is provided for adhering to the work surface (H)

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Data Source

PatentEP4721916A1Holding element for a support and/or guide device
Publication Date: 2026.04.08 FESTOOL GMBH
  • EP4721916A1 patent drawingFigure 1~8
  • EP4721916A1 patent drawingFigure 9~13
  • EP4721916A1 patent drawingFigure 14~18

AI summary

The invention relates to a holding element (60) for a device for supporting and/or guiding a machine tool (20) or a workpiece (W), wherein the device has a support body (40) with a contact surface (42) for contacting a working surface (H) of a workpiece (W) or a wall. The holding element (60) is provided to have an adhesive (70) for adhering to the working surface (H) and a fastening element for a releasable hold on the support body (40), wherein the fastening element comprises at least one positive-locking contour (90) for a positive-locking hold on a holding element receptacle (55) of the support body (40).