Blade Sharpness Testing Without Carriage Position Tracking
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Solution Overview
Problem
Existing blade sharpness testing devices require the blade to be mounted on a carriage, limiting their ability to measure sharpness independently of the blade's position and movement.
Innovation Solution
A system comprising a mounting arrangement for a material to be cut, a force measuring device, and a control system that detects variations in force and provides an indication of blade sharpness without needing a carriage-mounted blade, allowing for independent blade control and position-independent testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the blade is mounted on a carriage for testing, then the blade position can be tracked and measured, but the system complexity increases and the blade cannot be tested independently of its mounting mechanism
Solution Approach 1:
The patent extracts the blade from the carriage mounting system and tests the blade independently. The blade is held by a simple holder that can be manually positioned, separating the blade testing function from the complex carriage positioning mechanism. This allows sharpness measurement without requiring the blade to be mounted on a carriage.
Solution Approach 2:
The force measuring device is designed to be universal, capable of measuring force at multiple positions along the blade without requiring different mounting arrangements. The same force sensor can measure force at the tip, middle, or any other position of the blade by simply moving the blade holder, making the system adaptable to various testing needs without increasing complexity.
2Force
If the blade is held by a carriage, then force measurement during cutting is possible, but the testing system loses flexibility and cannot accommodate independent blade control
Solution Approach 1:
The testing system is segmented into independent components: a simple blade holder for manual positioning, a separate force measuring device for force detection, and a control system for coordinating operations. This segmentation allows the blade to be controlled independently while still enabling force measurement during cutting.
Solution Approach 2:
The blade holder acts as an intermediary between the operator and the blade, providing a simple interface for holding and positioning the blade without the complexity of a carriage system. The force measuring device serves as an intermediary that captures cutting force data without requiring the blade to be mounted on a complex mechanism.
3Loss of information
If a carriage system is used to position the blade, then blade location can be recorded, but the ease of operation decreases due to complex mounting requirements
Solution Approach 1:
Instead of using a permanent, complex carriage system, the patent employs a simple, easily replaceable blade holder that can be quickly mounted and dismounted. This simple holder suffices for the duration of each test, providing adequate position information without the overhead of a complex carriage mechanism.
Solution Approach 2:
The blade holder is designed to be easily positioned and secured by the operator without requiring complex adjustment mechanisms or specialized mounting procedures. The simplicity of the holder allows operators to quickly set up tests with different blades, improving ease of operation while still enabling position tracking.
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
Enables accurate measurement of blade sharpness by detecting force variations along the blade, providing a peak sharpness score, and optionally aborting tests if pre-determined force levels are exceeded, without requiring a carriage or blade position data.
Implementation Method 1
a force measuring device operable, in use, to determine variations in force along a blade as parts of the blade contact the material
Data Source
AI summary
A system for testing blade sharpness comprises a mounting arrangement for mounting a material to be cut; a force measuring device operable, in use, to determine variations in force along a blade as parts of the blade contact the material; and a control system. The control system is adapted to receive a signal that a blade sharpness test is to be performed; in response to the signal, prepare the mounting arrangement for a blade sharpness test; detect when force on the material rises above a pre-determined level; detect when the blade sharpness test is completed; and provide an indication of the force of the blade on the material.