Cutting Tool Groove Layout for Cutting Fluid Distribution
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Solution Overview
Problem
Conventional cutting tools with parallel grooves on the rake surface face issues with insufficient cutting fluid distribution near the cutting edge, leading to reduced tool life due to inadequate lubrication and increased wear.
Innovation Solution
The cutting tool features a configuration with aligned grooves and connecting grooves on the rake and relieved surfaces, allowing for better fluid distribution and preventing dead ends, ensuring that cutting fluid can spread effectively across the contact areas with the chip and to-be-cut surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If grooves are arranged substantially parallel to each other on the rake surface, then the structure is simple and easy to manufacture, but the cutting fluid is unlikely to move between the grooves in the contact part, resulting in insufficient lubrication and reduced tool life
Solution Approach 1:
The groove arrangement is segmented into two distinct patterns: aligned grooves for fluid distribution and radiating grooves for fluid storage. This segmentation allows each pattern to perform its specific function optimally, resolving the contradiction between manufacturing simplicity and tool life
Solution Approach 2:
Different groove patterns are applied to different regions of the rake surface based on local requirements. The aligned grooves are positioned where fluid distribution is needed, while radiating grooves are positioned in contact areas where fluid storage and lubrication are critical, achieving local optimization of both manufacturing ease and tool reliability
2Device complexity
If grooves are arranged adjacent to each other without connecting grooves, then the structure is simpler, but the cutting fluid cannot spread effectively in the contact part of the rake surface, leading to increased wear
Solution Approach 1:
Connecting grooves act as intermediaries that link the aligned grooves to the radiating grooves, enabling cutting fluid to flow from the distribution channels to the storage reservoirs. This intermediary structure facilitates effective fluid distribution without significantly increasing overall complexity
Solution Approach 2:
The groove system transitions from a single-dimension parallel arrangement to a two-dimensional pattern incorporating both aligned and radiating grooves connected by linking grooves. This dimensional expansion enables effective fluid distribution across the rake surface contact area
3Device complexity
If cutting fluid is not sufficiently supplied to the part in proximity to the cutting edge, then the groove structure can be simpler, but the tool life is reduced due to insufficient lubrication
Solution Approach 1:
The radiating grooves are pre-formed on the rake surface to create fluid reservoirs before cutting begins. This preliminary structuring ensures that cutting fluid is immediately available in the contact areas from the start of operation, extending tool life without requiring complex fluid delivery mechanisms
Solution Approach 2:
The groove system is designed to automatically distribute and store cutting fluid through its aligned and radiating patterns, eliminating the need for additional active fluid delivery components. The structure itself performs the lubrication service, extending tool life with minimal added 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
This configuration enhances tool life by ensuring sufficient cutting fluid supply to the cutting edge, reducing wear and preventing fluid accumulation, thereby improving the tool's performance and longevity.
Implementation Method 1
because the cutting fluid can move through the connection groove between the aligned grooves connected to each other by the connection groove, the cutting fluid can easily spread in a contact part (in proximity to the cutting edge) of the at least one of the rake surface and the relieved surface
Data Source
AI summary
A cutting tool according to this invention includes a cutting edge configured to cut a workpiece; a rake surface configured to come in contact with a chip, which appears when the workpiece is cut by the cutting edge; and a relieved surface configured to come in contact with a to-be-cut surface of the workpiece. A plurality of first grooves are formed on a cutting edge side of the rake surface. The plurality of first grooves includes a plurality of aligned grooves arranged adjacent to each other, and a connection groove connecting at least two of the plurality of aligned grooves to each other.