Modular T-Slot Cutter Inserts for Adjustable Groove Geometry

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Solution Overview

Problem

Existing T-slot cutters require complex preparations for varying groove widths and angular shapes, leading to increased tool manufacturing costs and complex control issues.

Innovation Solution

A T-slot cutter design that allows for easy adjustment of groove width and angular shape by combining overlapping inserts with convex and concave portions, improving tool rigidity and reducing runout through a coaxial overlay configuration and attachment mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple different inserts are used to machine different groove widths and angular shapes, then the adaptability of the T-slot cutter is improved, but the device complexity and manufacturing costs increase

Engineering Contradiction:
Improveadjustability of groove width and angular shapeVSAvoidnumber of tools and control complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The insert is divided into multiple independent sections (first insert and second insert) that can be selectively combined. Each insert portion can be independently selected and combined to achieve different groove widths and angular shapes, replacing the need for multiple complete tools.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The T-slot cutter enables dynamic reconfiguration by allowing different insert portions to be combined in various ways. The selective combination of insert portions creates a dynamic system that adapts to different machining requirements without changing the basic tool structure.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If multiple different inserts are used to machine different groove widths and angular shapes, then the adaptability of the T-slot cutter is improved, but the manufacturing costs increase

Engineering Contradiction:
Improveadjustability of groove width and angular shapeVSAvoidtool manufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By segmenting the insert into multiple portions, the manufacturing cost is distributed across fewer complete tools. Each insert portion can be manufactured once and then combined in various ways, reducing the overall manufacturing cost compared to producing multiple complete inserts with different geometries.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insert portions are designed to be universal components that can serve multiple functions when combined differently. The same insert portions can create different groove widths and angular shapes, making the components multi-functional and reducing the need for specialized expensive tools for each application.

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

3Adaptability or versatility

If the insert portion is made by coaxially overlaying multiple inserts, then the adaptability is improved, but the protrusion length increases which reduces tool rigidity

Engineering Contradiction:
Improveconfiguration flexibility of insert portionVSAvoidtool rigidity
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The insert portions are nested or overlaid coaxially with each other, with one insert portion positioned within or adjacent to another. This nesting arrangement allows multiple insert portions to occupy a compact space, minimizing the overall protrusion length while maintaining the ability to create different groove configurations.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP3308891B1T-slot cutter
Publication Date: 2022.08.31 OSG
  • EP3308891B1 patent drawingFigure 1
  • EP3308891B1 patent drawingFigure 2
  • EP3308891B1 patent drawingFigure 3

AI summary

A T-slot cutter (1) is a tool for cutting a T-groove in a workpiece, and includes a body (2A) and an insert portion (3). The insert portion (3) is fixed to a leading end portion of the body (2A) using screws (8). The insert portion (3) is configured by overlaying inserts (4) and (5). By changing a combination of the inserts configuring the insert portion (3), a groove width and an angular shape of the T-groove cut in the workpiece can be easily adjusted. On mating faces of the inserts (4, 5), convex portions and concave portions of the mating face of the insert (4) overlap with concave portions and convex portions of the mating face of the insert (5). As a result, the inserts (4, 5) partially overlap with each other in a thickness direction, and thus a protrusion length of the insert portion (3) can be shortened.