Cutting Tool Internal Coolant Channel for Chip Undermining
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting tools with internal coolant channels struggle to effectively cool the hottest machining point due to chip shadowing, leading to inefficient cooling, increased wear, and reduced productivity.
Innovation Solution
The cutting tool is designed with an internal coolant channel oriented to undermine the chip, ensuring targeted coolant delivery to the rake face, enhancing cooling efficiency and chip evacuation, while minimizing tool wear through a guided coolant flow that reaches the hottest zone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant is supplied via nozzle spraying randomly into the machining area, then cooling is provided to the general area, but the hottest point on the chip face is not reached due to chip shadowing
Solution Approach 1:
The coolant supply system is segmented into multiple internal channels within the cutting insert, with specific outlet orifices positioned at strategic locations. This segmentation allows targeted coolant delivery to specific zones including the chip face, rather than random spraying, enabling precise cooling where most needed.
Solution Approach 2:
The patent introduces an intermediary structure - the cutting insert with integrated coolant channels - that mediates between the coolant source and the machining zone. This intermediary directs coolant flow through controlled passages to overcome chip shadowing and deliver cooling precisely to the hottest points on the chip face.
2Manufacturing precision
If internal coolant channels are guided through the cutting insert to reach the chip face directly, then cooling precision is improved, but the production cost increases and the cutting insert is weakened
Solution Approach 1:
The cutting insert design integrates multiple functions: it serves as both the cutting tool and the coolant distribution system. The seat surfaces and wall sections that form the coolant channels also provide structural support and mounting functions, eliminating the need for separate coolant delivery components and reducing overall system complexity.
Solution Approach 2:
The patent modifies the physical parameters of the cutting insert by creating groove-like depressions in the wall sections. These grooves form the coolant channels through geometric design rather than complex internal drilling, changing the manufacturing approach from high-precision internal channel formation to surface-level groove creation that is more cost-effective.
3Device complexity
If coolant flows randomly sprayed, then simple delivery is achieved, but chip evacuation is poor and built-up edges form
Solution Approach 1:
The patent creates a replicated flow path through corresponding wall sections on both sides of the cutting insert. The groove-like depressions in matching wall sections form paired coolant channels that work together to deliver coolant effectively, copying the channel geometry across symmetric surfaces for enhanced performance.
Solution Approach 2:
The patent utilizes hydraulic principles by directing coolant flow through controlled channels to create a flushing action. The coolant acts as a fluid medium that physically removes chips from the machining zone through directed flow, leveraging fluid dynamics to achieve chip evacuation rather than relying on mechanical means.
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 design achieves improved cooling and rinsing effects, allowing higher cutting speeds and feeds, reduced built-up edge formation, and increased surface quality, resulting in extended tool life and enhanced productivity.
Implementation Method 1
the coolant emerging from it flows on the chip face in the direction of the cutting edge in such a way that a chip produced during machining is undermined
Implementation Method 2
the area on the chip face that is becoming hottest is practically not reached... the hottest point during machining, which is in the rake face lies
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The cutting tool (11) has a cutting edge (13) that is formed between a clamping surface (14) and a free surface (15). An internal coolant channel is provided, by which coolant is transported to the cutting wedge. The internal coolant channel is oriented such that coolant flows on clamping surface in the direction of cutting edge.