Single-Piece Woodworking Cutter With Interchangeable Inserts

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Solution Overview

Problem

Existing cutters for processing complex wood profiles, such as window frames, require multiple interconnected bodies, leading to potential damage, assembly issues, and manual operation, with limited precision and high risk of errors.

Innovation Solution

A single-piece cutter with a single body and interchangeable cutting inserts, featuring containment elements and adjustable screws for secure attachment, allowing high-speed processing without oscillation and simplifying tool replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple cutter bodies are connected to process complex profiles, then the ability to machine multiple protrusions and recesses is improved, but the stability and precision are worsened due to oscillations and movements between connected bodies

Engineering Contradiction:
Improveability to machine complex profilesVSAvoidprecision of profile processing
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The cutter body is divided into multiple independent cutting elements (first cutting element, second cutting element, third cutting element) that are integrated into a single piece structure. Each element can perform specific cutting functions (cutting, engraving, shaving) while maintaining stable connection to the cutter body, eliminating oscillations between separate bodies while preserving the ability to machine complex profiles with multiple protrusions and recesses

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If multiple cutter bodies are assembled together, then the functionality for different profile features is improved, but the device complexity and assembly difficulty increase

Engineering Contradiction:
Improvefunctionality for different profile featuresVSAvoidnumber of cutter bodies to assemble
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple cutting elements that would traditionally require separate cutter bodies are merged into a single integrated cutter body structure. The first, second, and third cutting elements are all固定在 the same cutter body at different positions and orientations, eliminating the need to assemble multiple separate bodies while maintaining the full functionality to machine various profile features

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single cutter body is designed with multiple cutting elements that perform different functions (cutting, engraving, shaving) and can be selectively engaged. This universal design allows one cutter body to replace multiple specialized cutter bodies, reducing assembly complexity while maintaining versatility for processing different profile features

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

3Adaptability or versatility

If multiple cutter bodies are used, then the capability to process different profile sections is improved, but the ease of operation and setup time are worsened due to assembly and disassembly requirements

Engineering Contradiction:
Improvecapability to process different profile sectionsVSAvoidease of assembly and disassembly
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The multiple cutting elements are permanently integrated into a single cutter body, eliminating the need for repeated assembly and disassembly operations. The unified structure allows the operator to simply mount one cutter body and perform all required cutting operations without manual assembly steps, significantly improving ease of operation while maintaining the capability to process different profile sections

Inventive Principle:
Principle #5Merging (Combining)

4Adaptability or versatility

If a single small tool is used to follow the profile, then the adaptability to complex shapes is improved, but the productivity and speed are worsened due to manual operation requirements

Engineering Contradiction:
Improveadaptability to complex shapesVSAvoidprocessing speed
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The cutter body incorporates multiple specialized cutting elements (cutting elements, engraving elements, shaving elements) that can simultaneously or sequentially engage with different parts of the profile. This segmented design allows high-speed automated processing of complex shapes, replacing manual single-tool operations while maintaining adaptability to intricate profile geometries

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4461489B1Single-piece cutter
Publication Date: 2025.09.10 TWT SRL
  • EP4461489B1 patent drawingFigure 1~2
  • EP4461489B1 patent drawingFigure 3~6
  • EP4461489B1 patent drawingFigure 7A~8C

AI summary

The invention refers to a cutter (100) for woodworking, comprising a rotating work tool (2) and a milling element inserted into the rotating work tool (2), which includes removable tools (13). The cutter (100) is made in a single body (10).