Additively Manufactured Cutting Tool Holder for Directed Coolant Jetting
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Solution Overview
Problem
Existing cutting tool holders face inefficiencies in cooling lubricant distribution, leading to inadequate cooling and chip removal, particularly during machining processes like grooving and parting, due to high consumption and insufficient local cooling at the cutting edge.
Innovation Solution
A cutting tool holder design featuring obliquely aligned cooling lubricant channels with multiple outlet openings on the side and end surfaces, allowing directed jetting of coolant onto the cutting tool, combined with an additive manufacturing method for cost-effective production, enabling efficient chip evacuation and reduced thermal expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cooling lubricant is supplied via flexible hoses with large volume flows, then the cooling lubricant supply is simple, but the cooling lubricant consumption is very high and the cooling effectiveness is insufficient
Solution Approach 1:
The patent extracts the cooling lubricant supply directly at the cutting edge location by integrating channels into the cutting tool holder and insert, eliminating the need for flexible hoses and achieving precise local cooling with reduced consumption
Solution Approach 2:
The patent implements local quality by providing cooling lubricant channels specifically at the cutting edge location where heat is generated, rather than using general-purpose hoses, thereby achieving efficient local cooling with minimal lubricant consumption
2Loss of substance
If cooling lubricant is supplied directly to the cutting tool seat via channels in the holder body, then the cooling lubricant consumption is reduced, but the chip removal capability is insufficient due to low pressure flow
Solution Approach 1:
The patent segments the cooling lubricant flow path into multiple independent channels - one for cooling the cutting edge and another for chip removal, allowing each channel to be optimized for its specific function with appropriate pressure and flow characteristics
Solution Approach 2:
The patent applies local quality by providing different channel configurations at different locations - high-pressure channels for chip removal and controlled-flow channels for cooling, ensuring each location receives the appropriate fluid dynamics for its specific function
3Reliability
If multiple channels and outlet openings are provided for improved cooling and chip removal, then the cooling effectiveness and chip evacuation are improved, but the device complexity increases
Solution Approach 1:
The patent merges the cooling function and chip removal function into a single integrated cutting tool holder structure with multiple channels, achieving reliable cooling and chip evacuation without requiring separate external systems
Solution Approach 2:
The cutting tool holder serves multiple functions simultaneously - it holds the cutting insert, provides cooling lubricant to the cutting edge, and facilitates chip removal, thereby achieving high reliability through multi-functionality rather than through complex multi-component systems
4Ease of manufacture
If conventional manufacturing methods are used for the cutting tool holder, then the manufacturing process is simple, but complex channel geometries cannot be produced
Solution Approach 1:
The patent replaces conventional mechanical manufacturing methods (milling, drilling, boring) with additive manufacturing technology, enabling the production of complex three-dimensional channel geometries and outlet openings that cannot be achieved with traditional subtractive or formative processes
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 provides improved local cooling and chip removal efficiency, reducing coolant consumption and extending cutting tool lifespan by ensuring controlled, high-pressure delivery of coolant to the cutting edge, while enabling complex geometries that conventional methods cannot produce.
Implementation Method 1
allows cooling lubricant to be conveyed directly to the cutting tool under high pressure
Implementation Method 2
a jet of cooling lubricant that comes out of this cooling lubricant channel can be directed onto a surface of a cutting tool
Data Source
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AI summary
The present invention discloses a cutting tool holder (1) with a holder body (1') having a cutting tool seat (123). The holder body (1') has a clamping section (11) for clamping the cutting tool holder (1) in a machine tool. The holder body (1') contains at least one first coolant channel (193) which has at least one outlet opening (18a, 18b) on a side surface (122") of the holder body and exits obliquely from the side surface (122"). The outlet opening (18a) is oriented such that a coolant jet (K) exiting the coolant channel (193) can be directed onto a surface of a cutting tool that is received in the cutting tool seat (123). Furthermore, a manufacturing method for the cutting tool holder (1) using an additive manufacturing device and a use of the additive manufacturing device are disclosed.