Razor Blade Tip 3D Measurement for Edge Process Optimization
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Solution Overview
Problem
Existing methods fail to effectively utilize spatial information from razor blade measurements to optimize blade edge design, manufacturing processes, and blade array configurations, lacking insights into skin interaction and cutting performance.
Innovation Solution
Utilize an atomic force microscope with a high aspect ratio probe to measure and analyze spatial information of razor blade tips, generating two- and three-dimensional representations to adjust manufacturing processes such as sharpening, coating, and electrochemical processes, and optimize blade array designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional measurement methods are used to measure razor blade tips, then measurement capability is limited, but measurement precision and ability to capture spatial information are insufficient
Solution Approach 1:
The patent replaces conventional mechanical measurement systems with atomic force microscopy (AFM), which uses a cantilever probe with a tip radius of curvature of 10-100 nanometers to physically scan and measure the razor blade tip geometry at the nanoscale, achieving unprecedented measurement precision without relying on optical or electron microscopy limitations
Solution Approach 2:
The patent transitions from two-dimensional surface measurements to three-dimensional spatial information capture by using the AFM probe to scan across the tip geometry and reconstruct the complete three-dimensional shape, including height, width, and curvature variations, enabling comprehensive characterization of the razor blade tip
2Manufacturing precision
If spatial information is not utilized, then manufacturing process optimization is limited, but valuable insights into blade characteristics, skin interaction, and cutting performance are lost
Solution Approach 1:
The patent implements a feedback loop where three-dimensional spatial information measured by AFM is fed back to manufacturers to optimize sharpening processes, coating applications, and electrochemical treatments, creating a continuous improvement cycle that refines blade edge geometry and manufacturing parameters based on actual measured characteristics
Solution Approach 2:
The patent enables preliminary optimization of manufacturing processes by using measured spatial information to predict and adjust sharpening parameters, coating thicknesses, and electrochemical treatment conditions before production, preventing defects and optimizing blade performance in advance
3Object-affected harmful factors
If blade array design is not optimized using spatial information, then cutting performance and skin damage reduction are limited, but insights into blade-hair-skin interaction are unavailable
Solution Approach 1:
The patent applies local quality optimization by using three-dimensional spatial information to design blade arrays where each blade's tip geometry is precisely characterized and positioned, allowing optimization of local interaction characteristics between individual blades, hair, and skin to minimize skin damage while maintaining cutting effectiveness
Solution Approach 2:
The patent enables parameter changes in blade array design by using measured spatial information to adjust critical parameters such as blade spacing, angle of attack, and tip geometry variations, optimizing the overall system performance for reduced skin irritation and improved cutting efficiency
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
Improves razor blade manufacturing processes and blade array configurations by reducing skin damage and cutting force, enhancing cutting performance and consistency.
Implementation Method 1
measuring, using an atomic force microscope including a probe having a high aspect ratio of a length to a half side angle and a probe tip with a radius less than a radius of an ultimate tip of the tip portion of the razor blade, the spatial information by traversing the probe across the tip portion of the razor blade
Data Source
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Figure 2~3B
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AI summary
A method of optimizing a manufacturing process or a blade array of a razor cartridge using spatial information for a tip portion of a razor blade comprises the steps of : measuring, using an atomic force microscope including a probe having a high aspect ratio of a length to a half side angle and a probe tip with a radius less than a radius of an ultimate tip of the tip portion of the razor blade, the spatial information by traversing the probe across the tip portion of the razor blade; analyzing, by one or more processors, the spatial information as measured by the atomic force microscope, to determine one or more blade characteristics; and using the blade characteristics to adjust the manufacturing process to improve a design of the razor blade or to adjust a design characteristic of the blade array to improve a design of the razor cartridge.