Regenerated Shearing Blade Build-Up Welding

Solution Overview

Problem

Conventional shearing type grinders experience early wear of cutting blades, leading to reduced grinding performance and efficiency, requiring frequent and costly replacements, which is inefficient and wasteful.

Innovation Solution

The regeneration of cutting blades through build-up welding to restore the leading end edge and side edges, with the addition of slip preventive build-up welding parts to maintain the blade width and prevent workpiece slipping, allowing for efficient shearing and grinding similar to new blades.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If cutting blades are used in shearing type grinder, then grinding function is achieved, but leading end edge and side edge wear out early reducing grinding performance

Engineering Contradiction:

Improvegrinding performanceVSAvoidblade service life

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent applies the discarding and recovering principle by collecting worn cutting blades after they have served their initial purpose and regenerating them through build-up welding. Instead of discarding worn blades entirely, the invention recovers their value by adding new material to restore the leading end edge and side edge, extending their service life and maintaining grinding performance without requiring complete blade replacement

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The patent applies composite materials principle by combining the base blade material with welding material to create a composite structure. The build-up welding process creates a composite of the original blade substrate and the added welding material, forming a renewed cutting edge that combines the durability of the base material with the sharpness and geometry of the newly formed edge

Inventive Principle:

Principle #40Composite materials

2Reliability

If entire cutting blades are replaced when worn, then grinding performance is restored, but cost and labor for replacement increase significantly

Engineering Contradiction:

Improvegrinding performanceVSAvoidreplacement time and labor

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies the discarding and recovering principle by collecting worn cutting blades after they have served their initial purpose and regenerating them through build-up welding. Instead of discarding worn blades entirely, the invention recovers their value by adding new material to restore the leading end edge and side edge, extending their service life and maintaining grinding performance without requiring complete blade replacement

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The patent applies segmentation by separating the cutting blade into the base blade structure and the wear-prone cutting edges. Rather than replacing the entire blade assembly, the invention selectively regenerates only the worn leading end edge and side edge portions through build-up welding, while the intact base structure is reused, thereby reducing material waste and replacement costs

Inventive Principle:

Principle #1Segmentation

3Duration of action of moving object

If build-up welding is applied to regenerate cutting edges, then blade service life is extended, but blade width may decrease due to wearing loss

Engineering Contradiction:

Improveblade service lifeVSAvoidblade width

Core Design Contradiction:

Duration of action of moving objectVSLength of moving object

Solution Approach 1:

The patent applies the discarding and recovering principle by collecting worn cutting blades after they have served their initial purpose and regenerating them through build-up welding. Instead of discarding worn blades entirely, the invention recovers their value by adding new material to restore the leading end edge and side edge, extending their service life and maintaining grinding performance without requiring complete blade replacement

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The patent applies parameter changes by modifying the physical dimensions of the cutting blade through material addition. The build-up welding process changes the blade's geometry by increasing the width at the cutting edge area, compensating for the width loss that occurred during wear. This parameter change restores the blade to its original or even improved dimensions

Inventive Principle:

Principle #35Parameter changes

4Reliability

If slip preventive build-up welding parts are added, then workpiece slipping is prevented, but manufacturing complexity increases

Engineering Contradiction:

Improveworkpiece grippingVSAvoidblade structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies the discarding and recovering principle by collecting worn cutting blades after they have served their initial purpose and regenerating them through build-up welding. Instead of discarding worn blades entirely, the invention recovers their value by adding new material to restore the leading end edge and side edge, extending their service life and maintaining grinding performance without requiring complete blade replacement

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The patent applies local quality by applying build-up welding selectively to specific areas of the cutting blade rather than uniformly across the entire blade. The welding is concentrated at the leading end edge and side edge where wear occurs and where slip prevention is needed, leaving the rest of the blade structure unchanged. This localized approach prevents workpiece slipping while minimizing the increase in overall structural complexity

Inventive Principle:

Principle #3Local quality

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 regenerated cutting blades enhance grinding efficiency and prevent workpiece slipping, reducing the need for full blade replacement, thus saving time, labor, and resources while maintaining performance close to new blades.

Implementation Method 1

The leading end edge and the side edges are regenerated and formed by build-up welding

Methodology Applied

Scientific EffectWelding: Welding

Data Source

PatentUS10046330B2Regenerated cutting blade and shearing type grinder

Publication Date: 2018.08.14 KINKI KK

AI summary

A regenerated cutting blade to be mounted and used in a shearing type grinder. The cutting blade includes a fixed part and a blade tip projecting outward from this fixed part, in which the blade tip has a leading edge pointed toward the rotating direction. Side edges 110 on the lateral side outer periphery including the blade tip, the leading end edge and the side edges are regenerated and formed by build-up welding. The lateral sides are provided with slip preventive build-up welding parts 111, 112, 113 extending from the side edges 110 toward the central side of its rotation or the central direction, and the build-up welding parts are formed by three regenerating processes.