Cutting-Wheel Handle Geometry for Precise Ceramic Cutting Alignment

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Solution Overview

Problem

Manual ceramic cutting devices face issues with the correct positioning and firm fixation of the cutting-wheel handle, leading to axial deviation and lack of parallelism between the rotation plane and the cutting line, which compromises cutting efficiency and shortens the life of the cutting element.

Innovation Solution

A cutting-wheel handle with a uniform cross-section featuring points arranged in two opposed straight rows and curved line segments, providing enhanced mechanical stress distribution and frictional engagement with the handle holder, along with a drilling process to align the through holes accurately, ensuring precise alignment and immobilization of the cutting-wheel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a semi-cylindrical cutting-wheel handle with a flat chamfered face is used, then the handle can be inserted and adjusted in height in the through hole of the holder, but the fixation is not firm and axial deviation occurs during cutting operation

Engineering Contradiction:

Improveease of insertion and height adjustmentVSAvoidfirmness of fixation

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies curvature by replacing the flat chamfered face with a curved surface featuring longitudinal grooves. This curved geometry with grooves increases the contact area and frictional engagement between the handle and the through hole, preventing axial deviation while maintaining ease of insertion and adjustment operations.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Ease of operation

If the circular external face of the handle slides along the internal face of the through hole, then insertion is possible, but the cutting parallelism deteriorates due to axial deviation under high cutting forces

Engineering Contradiction:

Improveease of insertionVSAvoidcutting parallelism

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The curved surface with longitudinal grooves replaces the sliding circular face, eliminating axial deviation under cutting forces while preserving insertion capability.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The curved surface is segmented into longitudinal grooves that increase frictional engagement and prevent sliding, thereby maintaining cutting parallelism without compromising insertion ease.

Inventive Principle:

Principle #1Segmentation

3Device complexity

If a semi-cylindrical handle with chamfered face is used, then the structure is simple, but the positioning of the cutting-wheel is not correct leading to axial deviation

Engineering Contradiction:

Improvesimplicity of handle structureVSAvoidpositioning accuracy

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The curved surface with longitudinal grooves provides enhanced positioning accuracy and eliminates axial deviation while adding minimal complexity to the handle structure, maintaining overall simplicity.

Inventive Principle:

Principle #14Spheroidality (Curvature)

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

The solution achieves improved alignment and firm fixation of the cutting-wheel handle, eliminating axial deviation and ensuring parallelism between the rotation plane and the cutting line, thereby enhancing cutting efficiency and extending the life of the cutting element.

Implementation Method 1

the outer contour of which includes points arranged following two curved line segments of the edge of a circle... providing enhanced mechanical stress distribution and frictional engagement with the handle holder

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS11590675B2Cutting tool for a ceramic cutting device, a cutting-wheel handle holder, a cutting assembly and a ceramic cutting device

Publication Date: 2023.02.28 CORTAG INDA E COMERCIO

AI summary

A cutting tool includes a cutting-wheel handle with an uniform cross-section with an outer contour including points arranged following two opposed straight rows and points arranged following one or more curved line segment of the edge of a circle enclosing an area into which the opposed straight rows lie and a cutting wheel mounted on the cutting-wheel handle to rotate along a rotation plane parallel or substantially parallel to the two opposed straight rows. A cutting-wheel handle holder has a body including a through hole for the insertion therethrough of the cutting-wheel handle, to a cutting assembly including the cutting tool and the cutting-wheel handle holder, and to a ceramic cutting device including the cutting assembly pivotably mounted to a support movably mounted on longitudinal guides mounted to a base.