Rotating Cutting Tool Segmental Edges for Knife Mark Depth
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Solution Overview
Problem
Conventional surface cutting methods using rotating cutting tools often result in knife marks with insufficient depth-to-width ratios, failing to produce aesthetically pleasing decorative patterns and lacking functional benefits like nonskid properties or light diffusion.
Innovation Solution
A processing method that employs rotating cutting tools with segmental edges of varying pitches and arc radii, ensuring a depth-to-width ratio of at least 3/100 for knife marks, allowing for enhanced aesthetic and functional outcomes such as improved design quality and nonskid functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional surface cutting methods are used with rotating cutting tools, then cutting can be performed on the workpiece surface, but knife marks are formed with insufficient depth-to-width ratios resulting in poor aesthetic appearance
Solution Approach 1:
The cutting edge is divided into multiple segmental edges with different arc radii along the rotation axis direction. This segmentation creates variable depth cuts that form knife marks with sufficient depth-to-width ratios (3/100 or more) while maintaining a systematic manufacturing approach through defined geometric parameters.
Solution Approach 2:
Different portions of the cutting edge have different arc radii, creating localized variations in cutting depth. This local quality variation ensures that knife marks achieve the required depth-to-width ratio in critical areas while maintaining overall pattern consistency, resolving the contradiction between precision and manufacturing ease.
2Adaptability or versatility
If conventional cutting edges are used, then cutting operation can be performed, but the knife mark cannot provide functional benefits such as nonskid properties or light diffusion
Solution Approach 1:
The cutting edge design with segmental edges of varying arc radii creates knife marks that simultaneously provide decorative patterns and functional benefits including nonskid properties, light diffusion, and oil reservoir function. This multi-functionality is achieved through the geometric configuration rather than additional components, balancing versatility with manageable complexity.
Solution Approach 2:
The cutting edge incorporates segmental edges with different arc radii, creating curved cutting paths that form embossed patterns with height differences. This curvature enables the knife marks to provide light diffusion and nonskid properties while maintaining a relatively simple cutting tool design.
3Shape
If segmental edges with varying arc radii are used, then decorative patterns with significant height differences can be formed, but the cutting tool design becomes more complex
Solution Approach 1:
The cutting edge parameters (arc radii of segmental edges) are systematically varied within defined ranges to achieve the desired height differences in embossments. By controlling parameters such as arc radius variations and pitch distances, significant height differences are obtained while maintaining manufacturable tool designs through parameter optimization rather than structural complexity.
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 method effectively creates decorative patterns with significant height differences, enhancing aesthetic appeal and functional benefits like nonskid properties and light diffusion, while also providing an oil reservoir function on metal surfaces.
Implementation Method 1
processing method for forming a cut pattern by rotationally cutting a surface of a workpiece using a rotating cutting tool
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
An end mill (10) has a small-diameter body (13) coaxially connected to an end portion of a large-diameter shank (11) via a connection portion (12) . At two circumferentially equally separated positions on an outer circumference of the body (13), the end mill (10) has a pair of cutting edges (14, 15) extending in a rotation axis direction. Each of the cutting edges (14, 15) comprises a plurality of segmental edges (14a, 15a) successively arranged in the rotation axis direction and having the same pitch P (the same length) . An edge of each of the segmental edges (14a, 15a) has a shape of an arc protruding radially with an edge arc radius R. The segmental edges (14a) are shifted by a half pitch in the rotation axis direction with respect to the segmental edges (15a).