Two-Point Support Cutting Wire for Carbonaceous Crucible Manufacturing

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Solution Overview

Problem

Conventional methods for manufacturing a member with a closed-bottom hole portion using a carbonaceous crucible face issues with low production yield, durability problems due to one-point support of the saw blade, and high force requirements for cutting.

Innovation Solution

A method utilizing a cutting wire with a two-point support structure to form the hollowed-out bottom portion, reducing the necessary trench width and distributing stress, thereby improving yield and durability while reducing the force needed for cutting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a saw blade with one-point support is used to form the hollowed-out bottom portion, then the cutting operation can be performed, but the cylindrical trench must be wide to accommodate the saw blade, resulting in low material yield

Engineering Contradiction:

Improvematerial yieldVSAvoidtrench width requirement

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces the traditional saw blade cutting mechanism with a wire cutting mechanism. The wire cutting device uses a thin wire instead of a broad saw blade, eliminating the need for a wide cylindrical trench. This substitution dramatically reduces material waste while maintaining effective cutting capability, directly resolving the contradiction between material yield and device complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If a saw blade with one-point support structure is used, then the cutting operation can be performed, but excessive stress acts on the support portion during cutting, causing deformation and breakage

Engineering Contradiction:

Improvecutting blade durabilityVSAvoidstress on support portion

Core Design Contradiction:

ReliabilityVSStress or pressure

Solution Approach 1:

The patent transitions from a one-point support structure to a two-point support structure for the cutting wire. By distributing the load across two support points instead of concentrating it at one point, the stress on each support portion is reduced, preventing deformation and breakage during cutting operations, thereby improving the reliability of the cutting blade.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If a saw blade with one-point support structure is used, then the cutting operation can be performed, but the force required for rotating the saw blade is large

Engineering Contradiction:

Improveforce required for cuttingVSAvoidforce for rotating cutting blade

Core Design Contradiction:

Ease of operationVSForce

Solution Approach 1:

The patent replaces the high-force saw blade rotation mechanism with a wire cutting mechanism. The wire cutting device requires significantly less force to operate compared to rotating a heavy saw blade, making the cutting operation easier to perform while maintaining effective material removal capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 method enhances material yield, improves cutting wire durability, and reduces the load on the apparatus by using a cutting wire with a two-point support structure, allowing for more efficient and effective cutting.

Implementation Method 1

pressing the cutting wire being supported at the two points in a direction approaching an axis line of the raw material

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

while rotating the raw material

Methodology Applied

Scientific EffectRotation:

Data Source

PatentUS9630262B2Method of manufacturing member having closed-bottom hole portion, and working tool

Publication Date: 2017.04.25 TOYO TANSO KK

AI summary

Provided are a method of manufacturing, and a working tool for, a member having a closed-bottom hole portion that can achieve a good yield of the material, can improve the durability of the cutting blade, and can reduce the force required for the work, by forming a hollowed-out bottom portion using a cutting wire having a two-point support. A method of manufacturing a member having a closed-bottom hole portion by inside-removing-working a raw material made of a carbonaceous material, the closed-bottom hole portion having a hollowed-out side portion and a hollowed-out bottom portion formed by hollowing out an inner portion of the raw material, including: a step of forming a cylindrical trench by digging the raw material frontward from a near-side end face of raw material while rotating the raw material, to form the hollowed-out side portion; and a step of forming the hollowed-out bottom portion by supporting a cutting wire inserted into a bottom portion of the cylindrical trench at two points while rotating the raw material, and pressing the cutting wire being supported at the two points in a direction approaching an axis line of the raw material.