Forged Blending Blade Edges for Sharpness and Wear Resistance
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Solution Overview
Problem
Existing blending devices face challenges in maintaining the sharpness and efficiency of blending blades, especially when processing hard ingredients like ice and frozen fruit, which affects the uniformity and quality of blended beverages.
Innovation Solution
The development of a blending blade with a body portion and wing portions featuring a beveled leading edge, increased hardness through forging or coining processes, and a variable hardness gradient, which maintains sharpness and reduces wear, allowing for efficient blending of ingredients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the blending blade is made with a sharp leading edge to minimize power consumption, then the power required to operate the blending machine is reduced, but the blade loses sharpness quickly when processing hard ingredients like ice and frozen fruit
Solution Approach 1:
The patent applies a variable hardness treatment to the blade, creating a hardness gradient where the leading edge has higher hardness (58-65 HRC) than the body (45-55 HRC). This parameter change allows the leading edge to maintain sharpness under high stress from hard ingredients while the softer body provides toughness and resistance to deformation, resolving the contradiction between initial sharpness and durability.
Solution Approach 2:
The blade effectively becomes a composite structure with two distinct material zones: a hardened surface layer at the leading edge and a softer core material in the body. This composite approach combines the advantages of hard materials (sharpness retention) with soft materials (toughness and flexibility), allowing the blade to withstand impact from ice and frozen fruit while maintaining cutting efficiency.
2Reliability
If the blending blade is made with increased hardness to maintain sharpness and reduce wear, then the blade retains its shape and sharpness under heavy use, but the blade becomes more susceptible to breaking or deformation
Solution Approach 1:
The patent implements local quality by applying selective hardening only to specific regions of the blade, particularly the leading edge and cutting surfaces, while keeping the body portion softer. This localized approach ensures that hardness is concentrated where it is most needed for maintaining sharpness, while the softer body provides overall structural strength and resistance to catastrophic failure.
Solution Approach 2:
The variable hardness treatment creates a gradual transition in material properties from the hardened surface to the softer core. This parameter gradient allows the blade to exhibit hard, wear-resistant behavior at the cutting interface while maintaining ductile, impact-resistant properties in the body, effectively resolving the contradiction between hardness and toughness.
3Adaptability or versatility
If the blending blade is designed to be flexible to adapt to different ingredients, then the blade can handle various materials effectively, but the blade bends and changes shape over extended use
Solution Approach 1:
The variable hardness profile allows the blade to exhibit appropriate flexibility in the body portion while maintaining dimensional stability in the critical leading edge regions. The softer body can flex and adapt to different ingredient loads and container geometries, while the hardened leading edge maintains its precise geometry for consistent cutting performance across extended use.
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 results in improved blending efficiency, reduced power consumption, and consistent product quality by maintaining the blade's shape and sharpness, even under heavy commercial use, and effectively breaks down ingredients like ice and frozen fruit.
Implementation Method 1
increased hardness through forging or coining processes
Data Source
AI summary
A blade configured for use in a blending apparatus includes a body portion and a pair of wing portions extending from the body portion. At least a leading edge of the blade is forged to increase a hardness property. The leading edge may have a minimum thickness that provides a relatively blunt leading edge. The wing portions of the blade may be formed after forging the blade.