Segmented Slitter Disc Structure for Precise Deep Cutting

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing slitters face challenges with integral designs that require replacement of the entire unit upon tooth damage, and non-integral designs are less precise, thicker, and less user-friendly, while indexable inserts are limited by diameter and have non-operative edges preventing deep cuts.

Innovation Solution

A disc segment design with non-projecting abutment surfaces and a segment hook for stable mounting, allowing precise cutting edges and high tooth density, and a slitter body with smoothly-curved pockets for efficient segment attachment, enabling deep cuts without replacing the entire slitter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If integral slitter design is used, then precision and tooth density are improved, but the entire slitter must be replaced when a single tooth is damaged

Engineering Contradiction:

Improvecutting precisionVSAvoidtooth replacement ease

Core Design Contradiction:

Manufacturing precisionVSEase of repair

Solution Approach 1:

The slitter is divided into a slitter body and multiple replaceable disc segments. Each disc segment contains multiple teeth, and when teeth are damaged, only the affected disc segment needs to be replaced rather than the entire slitter. This segmentation maintains high precision through consistent disc segment manufacturing while significantly improving ease of repair.

Inventive Principle:

Principle #1Segmentation

2Ease of repair

If non-integral disc segments are used, then tooth replacement ease is improved, but manufacturing precision and compactness deteriorate

Engineering Contradiction:

Improvetooth replacement easeVSAvoidcutting precision

Core Design Contradiction:

Ease of repairVSManufacturing precision

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

3Ease of repair

If indexable inserts with locating means are used, then tooth replacement ease is improved, but cut width increases and deep cutting capability is reduced

Engineering Contradiction:

Improvetooth replacement easeVSAvoidcut width

Core Design Contradiction:

Ease of repairVSLength of moving object

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of having cutting edges project outward from the disc segment (which would prevent deep cuts), the cutting edges are positioned at the periphery of the disc segment with non-projecting abutment surfaces. This inverted arrangement allows deep cutting capability while maintaining ease of replacement.

Inventive Principle:

Principle #13The other way round (Inversion)

4Ease of manufacture

If cemented carbide components are used, then machining capability is improved, but diameter limitation increases due to pressing requirements

Engineering Contradiction:

Improvemachining capabilityVSAvoidslitter diameter

Core Design Contradiction:

Ease of manufactureVSLength of stationary object

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250205915A1Slitter having slitter body and disc segments

Publication Date: 2025.06.26 ISCAR LTD

AI summary

A slitter having a slitter body and a plurality of disc segments mounted to pockets formed in the slitter body. The disc segments each have a plurality of integrally formed teeth. The slitter has a smoothly curved peripheral surface against which the disc segments abut when mounted thereto.