Insert Holder Void Structure for Lower Weight and Rigidity

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Solution Overview

Problem

Existing insert holders in metal cutting tools face a challenge in reducing weight while maintaining rigidity, as conventional weight-reducing features do not effectively balance material savings with structural integrity.

Innovation Solution

The insert holder features a unitary one-piece construction with a weight-reducing cavity and a plurality of cavity through recesses that connect the interior and exterior surfaces, reducing material usage while maintaining strength through strategically placed shank support members and a cooling conduit for enhanced performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If weight-reducing cavities are added to the insert holder, then the weight of the insert holder is reduced, but the rigidity of the insert holder deteriorates

Engineering Contradiction:

Improveweight of insert holderVSAvoidrigidity of insert holder

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The insert holder incorporates a weight-reducing cavity with a porous or honeycomb-like internal structure formed by multiple cavity through recesses. This porous configuration reduces material usage and weight while the distributed wall structure maintains structural integrity and rigidity during metal cutting operations.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The cavity structure is segmented into multiple cavity through recesses that penetrate through the holder wall. These segmented openings are strategically positioned to reduce weight in non-critical areas while leaving critical load-bearing regions intact, thus maintaining rigidity while achieving weight reduction.

Inventive Principle:

Principle #1Segmentation

2Loss of substance

If material is removed to create cavities, then material usage is reduced, but structural integrity deteriorates

Engineering Contradiction:

Improvematerial usageVSAvoidstructural integrity

Core Design Contradiction:

Loss of substanceVSStrength

Solution Approach 1:

The cavity through recesses are strategically positioned in non-critical regions of the insert holder where material removal does not compromise structural integrity. The holder maintains full material density in load-bearing areas while having reduced material in areas where weight reduction is beneficial, achieving local optimization of material distribution.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20230182212A1Insert holder having weight-reducing voids and cutting tool

Publication Date: 2023.06.15 ISCAR LTD

AI summary

An insert holder includes a cutting portion and a shank portion. The insert holder further includes a cavity which includes a cavity chamber and a plurality of cavity through recesses which serve to reduce the weight of the insert holder. The plurality of cavity through recesses open out to the cavity chamber and to the periphery of the shank portion. A cutting tool is provided having a cutting insert releasably attached to the insert holder.