Adjustable Multi-Blade Knife for Precise Variable-Width Cutting
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Solution Overview
Problem
Traditional knives with single, fixed blades are inefficient for tasks requiring different blade spacings, leading to time-consuming and inconsistent cutting results, and traditional multi-blade knives lack adjustability, limiting their functionality.
Innovation Solution
A multi-blade knife with a handle and adjustable blade spacing mechanism, allowing blades to move relative to each other while maintaining parallel orientation, facilitated by mechanisms like thumb screws or wheels, enabling precise adjustment and locking for various cutting tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional knives with single, fixed blades are used, then the structure is simple and easy to manufacture, but cutting efficiency is low and tasks requiring different blade spacings are time-consuming
Solution Approach 1:
Multiple blades are merged into a single knife body, allowing multiple cutting functions to be performed simultaneously or sequentially. The blades are integrated with common support members and adjustment mechanisms, combining what would traditionally require multiple separate knives into one unified tool.
Solution Approach 2:
The knife is designed with multiple blades that can be adjusted to different spacings and configurations, enabling a single tool to perform multiple cutting tasks that would otherwise require different specialized knives. The adjustable mechanism allows the same blade assembly to adapt to various cutting requirements.
2Adaptability or versatility
If traditional multi-blade knives with fixed blade spacing are used, then the structure is simpler than adjustable mechanisms, but functionality is limited and cannot accommodate different cutting tasks
Solution Approach 1:
The blade spacing is made dynamic and adjustable rather than fixed. The adjustment mechanism allows users to change the distance between blades according to different cutting requirements, transforming a static structure into an adaptable one that can respond to varying task demands.
Solution Approach 2:
The physical parameter of blade spacing is made variable through the adjustment mechanism. Users can modify the distance between blades by operating the adjustment components, allowing the same knife to accommodate different cutting widths and patterns by changing this key geometric parameter.
3Adaptability or versatility
If adjustable blade spacing mechanisms are added to multi-blade knives, then versatility for different cutting tasks is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The knife is divided into modular components including multiple blades, support members, and adjustment mechanisms that can be manufactured separately and then assembled. This segmentation allows each component to be optimized and manufactured independently using standard machining processes, reducing overall manufacturing complexity.
Solution Approach 2:
Adjustment mechanisms such as thumb screws or wheel mechanisms serve as intermediaries between the user and the blade positioning system. These intermediary components provide a user-friendly interface for adjusting blade spacing while simplifying the mechanical linkage required to move the blades, making the overall system easier to manufacture and operate.
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
Enhances cutting efficiency and precision, allowing customization for different materials, reducing the need for multiple knives, and providing a versatile, hygienic, and user-friendly cutting tool.
Implementation Method 1
The blade spacing adjustment mechanism can include a thumb screw and an elongate screw member extending from the thumb screw. The support member can include a screw interface for interfacing with the elongate screw member. The screw interface of the support member and the elongate screw member of the blade spacing adjustment mechanism can form a screw-and-nut mechanism such that rotation of the thumb screw can cause the elongate screw member to screw into or unscrew from the screw interface.
Data Source
AI summary
An adjustable multi-blade knife is disclosed that includes a handle, a plurality of blades, and a blade spacing adjustment mechanism. The blades are oriented in parallel with each other and supported by the handle. The blade spacing adjustment mechanism is operable to cause movement of the second blade relative to the first blade while retaining a substantially parallel orientation with the first blade.