Cutting Insert Holder Coolant Channels for Full-Edge Cooling
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Solution Overview
Problem
Existing cutting tools with exchangeable inserts face challenges in efficient coolant delivery, leading to suboptimal cooling and rapid tool wear, especially when only a limited portion of the tool is effectively cooled, resulting in high manufacturing and maintenance costs.
Innovation Solution
A cutting tool design with a coolant supply system featuring multiple channels and slit-shaped outlets on both the face and sides of the cutting insert holder, allowing uniform coolant distribution to the entire cutting edge, minimizing flow loss and enhancing cooling efficiency across the critical regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If deep holes of relatively small diameters are bored or electrical discharge-machined in the tool holders to supply coolant to cutting inserts, then coolant can be delivered to the cutting inserts, but the manufacturing cost becomes very costly and the coolant delivery is suboptimal
Solution Approach 1:
The tool holder is divided into multiple segments with individual coolant channels for each cutting insert position. Each segment can be manufactured separately using simpler processes and then assembled, avoiding the need for complex deep hole drilling or electrical discharge machining through the entire tool holder. This segmentation allows coolant to be delivered effectively to each cutting insert while reducing manufacturing complexity and cost.
2Device complexity
If coolant is supplied only to a limited portion of the cutting tool, then the cooling system is simpler, but the tool durability decreases rapidly due to insufficient cooling of the entire cutting edge
Solution Approach 1:
The cooling system is designed to serve multiple cutting inserts simultaneously through a unified channel structure in the tool holder. The same basic channel design is replicated for each insert position, allowing the system to cool the entire cutting edge uniformly. This multi-functional approach extends tool durability by ensuring all cutting edges are adequately cooled without requiring vastly different cooling strategies for each position.
Solution Approach 2:
Coolant channels are configured to distribute coolant not only radially but also axially along the tool holder, ensuring that cutting inserts at different positions along the tool axis receive adequate cooling. This three-dimensional coolant distribution network extends cooling coverage to the entire cutting edge while maintaining a relatively simple channel geometry that can be manufactured efficiently.
3Device complexity
If conventional coolant supply methods are used, then the tool structure is simpler, but heat dissipation is insufficient leading to rapid tool wear
Solution Approach 1:
The tool holder structure itself acts as an intermediary coolant distribution system, with integrated channels that actively transport coolant to each cutting insert. This intermediary structure bridges the gap between the coolant source and the cutting edges, ensuring efficient heat dissipation through direct coolant contact at each cutting position while maintaining overall structural simplicity.
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 solution enables improved heat dissipation, extended tool durability, and enhanced machining performance by ensuring comprehensive cooling of the cutting inserts, allowing for multiple operations without significant degradation.
Implementation Method 1
coolant supply via a number of channels P in the holder N
Implementation Method 2
improved heat dissipation
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A cutting tool configured for being clamped in a machine tool, comprising at least one cutting insert (D) affixed to holder (N) of the cutting insert (D), where the holder (N) of the cutting insert (D) is provided with coolant supply (P). Exchangeable cutting insert (D) is available for cutting on the face (C) of the cutting insert (D) as well as both sides (B1) and (B2) of the cutting insert (D), where the slit (S)-shaped outlet of the coolant supply (P) is directed onto faces (C) and sides (B1) and (B2) of the cutting insert (D).