Cutting Tool Cooling Coupling With Fastener-Integrated Fluid Passages
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Solution Overview
Problem
Existing cooling systems in cutting tools require additional space and recesses for fluid delivery, leading to sealing issues and structural thickness problems when integrated into cutting tools with replaceable blade holders.
Innovation Solution
A coupling system with a fastener having a shank, head, longitudinal passage, and radial opening in the head, allowing for fluid flow communication without the need for additional recesses or openings on the tool shank, utilizing a non-circular passage for secure attachment and an annular groove for fluid flow, enabling efficient fluid delivery to the cutting area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bolt or screw head is provided on the blade holder side facing the tool shank for cooling system integration, then cooling and lubricating fluid can be delivered to the cutting site, but additional openings and recesses are required in the tool shank surface, increasing device complexity and space requirements
Solution Approach 1:
The cooling system integration is merged with the existing fastener structure. The fastener serves dual purposes: mechanically securing the blade holder to the tool shank and providing fluid delivery pathways through its shank and head. This eliminates the need for separate cooling system components and additional openings in the tool shank.
Solution Approach 2:
The fastener is designed with multi-functionality, serving both as a mechanical fastening element and as a fluid conduit. The longitudinal passage through the fastener axis and radial openings in the head enable fluid delivery, while the fastener itself provides structural attachment, reducing overall device complexity.
2Reliability
If cylindrical heads with radial bores are used for cooling system integration, then fluid flow is enabled, but the structure increases thickness requirements and creates sealing difficulties
Solution Approach 1:
The fastener head incorporates a thin-walled cylindrical structure with radial openings that provides fluid flow pathways without significantly increasing overall thickness. The thin-walled design allows the fluid channels to be integrated into the head geometry itself, eliminating the need for additional thick sealing structures or recesses.
Data Source
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AI summary
A coupling (23) is provided for a cooling system in a cutting tool (21). The coupling includes a fastener (39) including a shank (43) having a first end (45) and a second end (47), the first end (45) of the shank (43) defining the first end (49) of the fastener (39), a head (51) at the second end of the shank (43), a top (53) of the head (51) defining a second end (55) of the fastener (39), a longitudinal passage (57) in the shank (43), and a radial opening (69) in the head (51) in flow communication with the longitudinal passage (57). The application further relates to a blade holder (29).