Diamond Internal-Tooth Ring Structure for Fine Tool Tooth Profiling

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Solution Overview

Problem

Existing tools for dressing or profiling fine-machining tools with external teeth struggle to accurately and efficiently map the required tooth geometry onto the tools, especially when the tools have coarse gearing, and existing solutions with thin diamond dressing wheels are limited in thickness and control.

Innovation Solution

A ring-shaped tool with internal teeth made of diamond material, supported by a steel support ring, allows for precise mapping of tooth geometry by a thin ring element that protrudes into the machining area, enabling secure engagement and material removal during the dressing process, with a thickness of up to 5 mm and segmented design for easy assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a thin diamond dressing wheel is used to dress fine-machining tools, then the dressing wheel can be moved freely along the tooth flanks and generate tooth geometry through controlled movement, but the dressing wheel requires precise positioning control and the tool structure becomes more complex

Engineering Contradiction:
Improvefreedom of movement along tooth flanksVSAvoidtool structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The dressing tool is segmented into a support ring structure and a separate thin diamond ring element. The diamond ring is divided into multiple segments that can be independently positioned and secured on the support ring, allowing flexible configuration while maintaining structural support.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A support ring acts as an intermediary between the tool holder and the thin diamond ring. The support ring provides mechanical support and positioning features, while the thin diamond ring provides the cutting function, separating the structural support function from the cutting function.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If a ring element with internal teeth made of diamond material is used, then exact mapping of tooth geometry is enabled with minimal effort, but the thin diamond ring element requires secure support during machining

Engineering Contradiction:
Improvetooth geometry mapping precisionVSAvoidstructural support of thin diamond ring
Core Design Contradiction:
Manufacturing precisionVSStrength

Solution Approach 1:

The diamond ring is segmented into multiple pieces that can be individually supported and secured on the support ring. Each segment can be independently positioned to ensure proper alignment while receiving localized support, preventing deformation during machining operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The tool combines diamond material for the cutting ring elements with a metallic support ring structure. The diamond provides extreme hardness and precision for tooth geometry mapping, while the metal support ring provides structural strength and flexibility to support the thin diamond segments during machining.

Inventive Principle:
Principle #40Composite materials

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 the exact mapping of tooth geometry onto fine-machining tools with minimal effort, ensuring precise machining results and handling various tooth shapes through controlled movement, while securely supporting the thin diamond ring element during machining operations.

Implementation Method 1

The ring element (6) is made of a diamond material, the teeth (10) of which have cutting edges (11) with which they remove material from the fine tool during toothing or dressing

Methodology Applied
Scientific EffectAbrasion: Abrasion

Data Source

PatentEP3592492B1Tool for cutting teeth or for dressing a fine machining tool having a set of external teeth
Publication Date: 2022.09.28 PRAEWEMA ANTRIEBSTECHNIK GMBH
  • EP3592492B1 patent drawingFigure 1~2
  • EP3592492B1 patent drawingFigure 3

AI summary

The invention relates to a tool (1) for dressing or cutting teeth of fine machining tools, which tool makes it possible to exactly reproduce, in a simple manner, the required tooth geometry on the fine machining tool which is to be dressed or in which teeth are to be cut. The tool (1) is annular and has a set of internal teeth (9), the teeth (10) of which mesh, during the tooth-cutting or dressing operation, with the set of external teeth of the fine machining tool in which teeth are to be cut or which is to be dressed. At the same time, the tool (1) has a central longitudinal axis (L), which extends through the center point of the opening (3) surrounded by the tool. According to the invention, the set of internal teeth (9) is now formed on a ring element (6), which is at most 5 mm thick and is produced from a diamond material. The teeth (10) of the set of internal teeth (9) have cutting edges (11), by means of which said teeth remove material of the fine tool during the tooth-cutting or dressing machining process. The ring element (6) is supported by a support ring (2), on which at least one support element (5) associated with the support ring opening (3) of the support ring (2) is provided. The ring element (6) is supported on said support element. The teeth (10) of the set of internal teeth (9) formed on the ring element (6) protrude beyond the edge of the support element (5) facing the support ring opening (3) at least over part of the length of the cutting edges (11) of said teeth in the direction of the central longitudinal axis (L) of the tool (1).