Coolant-Passage Cutting Insert for Tip Heat and Wear Control
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Solution Overview
Problem
Current cutting tools lack effective cooling mechanisms for the cutting tip, leading to reduced machining accuracy and accelerated wear due to high temperatures.
Innovation Solution
A cutting insert design featuring a base insert with brazed cBN sintered cutting tips and internal coolant passages that facilitate direct coolant flow to the cutting edges, enhancing heat dissipation and chip control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If no cooling mechanism is provided for the cutting tip, then the structure remains simple, but the cutting tip temperature rises causing deterioration in machining accuracy and accelerated wear
Solution Approach 1:
The cooling system is segmented into multiple coolant supply holes positioned at different locations (including the cutting tip and flank areas) to provide targeted cooling to specific high-temperature zones, rather than using a single general cooling mechanism
Solution Approach 2:
Coolant is introduced as an intermediary substance to transfer heat away from the cutting tip and surrounding areas, mediating the thermal interaction between the cutting edge and the workpiece to maintain machining precision
2Duration of action of stationary object
If no cooling mechanism is provided for the cutting tip, then the device complexity remains low, but the tool life is reduced due to high temperature wear
Solution Approach 1:
The coolant delivery system serves multiple functions simultaneously: it cools the cutting tip, cools the flank area, and helps control chip formation, making the cooling system multi-functional rather than requiring separate systems for each purpose
Solution Approach 2:
The cooling system is designed with local quality by positioning coolant supply holes at specific locations where heat generation is most intense (cutting tip and flank areas), providing concentrated cooling exactly where needed rather than uniform cooling throughout
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 design extends tool life by efficiently cooling the cutting tip, improving machining accuracy and chip control through targeted coolant delivery and heat management.
Implementation Method 1
a cutting insert where a cutting tip is cooled effectively so as to achieve an extended tool life
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
A cutting insert 10 comprising a cutting tip 14 and a base insert 12 on which the cutting tip 14 is mounted, the cutting insert 10 being provided with a passage PA which is formed along a boundary surface between the cutting tip 14 and the base insert 12 so as to extend from a boundary part, in an upper surface of the cutting insert 10, between the cutting tip 14 and the base insert 12 to another boundary part, in a lower surface of the cutting insert 10, between the cutting tip 14 and the base insert 12.