Removable Stop With Central Claw For Plate Cutting Tool

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Solution Overview

Problem

Existing plate cutting tools for reconstituted materials are inefficient, costly, and cumbersome due to their high material and weight requirements, which increase the price and hinder precise cutting and transportability, especially when cutting angles and dust interference are considered.

Innovation Solution

A removable stop with a central claw and lateral wedges, along with a support lip, is integrated into the cutting tool, allowing for adjustable cutting angles and reduced material usage, enhancing precision and versatility while minimizing dust interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a wide support with a large contact surface is used to ensure regular cuts, then cutting precision is improved, but the weight and raw material consumption increase

Engineering Contradiction:
Improvecutting precisionVSAvoidtool weight
Core Design Contradiction:
Manufacturing precisionVSWeight of moving object

Solution Approach 1:

The support structure is segmented into a narrow web and separate stabilizing elements (wings and soul) that are folded or welded together. This segmentation allows the contact surface area to be maintained for cutting precision while the overall material consumption and weight are reduced, as the segments can be optimized independently rather than requiring a uniformly wide support structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support transitions from a two-dimensional wide flat structure to a three-dimensional inverted U-shaped structure with wings and soul. This dimensional change allows the narrow web to provide sufficient contact surface area for precision cutting while the vertical dimension (height of wings and depth of soul) provides structural stability and weight distribution without requiring excessive material width.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If cutting accessories such as trestles and angularly adjustable stops are added to enable versatile cutting, then adaptability is improved, but the device complexity and cost increase

Engineering Contradiction:
Improvecutting versatilityVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The stabilizing wings and support soul are merged into an integrated inverted U-shaped structure that combines multiple functions: providing structural stability, supporting the plate during cutting, and enabling various cutting angles. This merging eliminates the need for separate trestles and adjustable stops, reducing device complexity while maintaining cutting versatility.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The inverted U-shaped support structure serves multiple functions simultaneously: it stabilizes the plate, provides cutting surfaces at different angles, and supports the blade mechanism. This multi-functionality allows the tool to perform various cutting operations (transverse cuts, longitudinal edging, angular cuts) without requiring additional specialized accessories, thereby improving versatility while controlling complexity.

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

3Manufacturing precision

If a fixed stop with means of cooperation with angular cutting accessories is provided, then cutting angle precision is improved, but the raw material consumption and weight increase

Engineering Contradiction:
Improvecutting angle precisionVSAvoidraw material consumption
Core Design Contradiction:
Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The stop structure is designed with localized features (specific geometric shapes and contact surfaces) at critical positions rather than uniformly throughout the structure. This allows precise angle control at the cutting interface while minimizing material consumption in non-critical areas of the support structure.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The stop and support structure employs asymmetric geometry optimized for specific cutting angles and directions. Rather than symmetric designs that require more material, the asymmetric configuration provides precise angular positioning with minimal material, as each side of the structure is tailored to its specific functional requirement.

Inventive Principle:
Principle #4Asymmetry

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 lightweight, cost-effective, and versatile cutting tool capable of precise cuts in both transverse and longitudinal directions, reducing material waste and dust interference, thus improving cutting efficiency and usability on-site.

Implementation Method 1

The blade performs, in cooperation with the edges of the slot, a double shear: the flat, sharp cutting edge of the blade slides along the longitudinal edges of the blade, like two scissors. This double shear has the effect that the blade does not penetrate, during cutting, in the usual way into the plate to be cut to split it, but removes a strip of material from the plate

Methodology Applied
Scientific EffectShear stress: Shear Stress

Implementation Method 2

a central claw, intended to be inserted by force under the shoulder of the slot

Methodology Applied
Scientific EffectMechanical force: Mechanical Force

Data Source

PatentEP2907630B1Removable stop for a device for cutting plates and cutting device incorporating it.
Publication Date: 2016.11.23 ESTAB PIERRE GREHAL & CO SA
  • EP2907630B1 patent drawingFigure 1~5
  • EP2907630B1 patent drawingFigure 6~11

AI summary

The present invention provides an economical and efficient stop for a plate cutting tool, the tool comprising: • a support, • a blade pivotally mounted on the support by a pivot, between an open position to receive, between the support and the blade, the plate to be cut, and a closed position at the end of a cut, • a slot intended to receive at least a part of the blade during the cut, the slot being carried by a portion of the support and comprising a proximal end close to the pivot and a distal end away from the pivot having a shoulder; The stop (200) is characterized in that it comprises, with respect to the position of use: • a contact face (201) with the plate to be cut; and • a central claw (202), intended to be press-fitted under the shoulder (4) of the slot.