Disc Cutter Cooling Cannula for Lower-Sector Heat Removal
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Solution Overview
Problem
Current cooling devices for disc cutters have limited cooling capacity due to coolant being thrown tangentially at high rotational speeds, primarily cooling the upper half of the disc, which does not effectively address the heating issues in the contact and penetration areas during cutting.
Innovation Solution
A cooling device with a curved, tubular guide and a semi-rigid cannula allowing longitudinal movement, coupled with a nozzle that pours coolant tangentially onto the lower sector of the disc, ensuring effective cooling in the contact and penetration areas, and a nozzle design that applies coolant to both opposite faces and the periphery for uniform cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If coolant is supplied on the upper half of the cutter disc, then the construction is simple, but the cooling effectiveness is low due to high rotational speed throwing coolant tangentially
Solution Approach 1:
The invention inverts the conventional cooling approach by supplying coolant to the lower half of the disc instead of the upper half. The nozzle is positioned below the disc and directs coolant upward onto the lower surface, allowing the coolant to remain in contact with the disc longer and cool the bearing area more effectively before being thrown tangentially by rotation.
Solution Approach 2:
The invention adds a vertical dimension to the cooling system by positioning the nozzle below the disc and using a curved cannula that extends downward. This dimensional change allows coolant to be applied from the bottom surface, creating a more effective cooling path that addresses the bearing area where heat is generated.
2Reliability
If fins are added to lateral walls to redirect coolant, then coolant redirection is improved, but device complexity increases
Solution Approach 1:
The invention extracts the coolant redirection function from the protective cover structure by removing the need for internal fins. Instead, the system uses a separate movable cannula with a nozzle that actively directs coolant to the correct location, separating the cooling function from the protective cover's structural role.
Solution Approach 2:
The invention introduces a curved cannula as an intermediary element between the coolant supply tube and the disc surface. This cannula acts as a mediator that guides and positions the coolant flow, enabling effective cooling without modifying the protective cover's internal structure with fins.
3Reliability
If nozzle is moved closer to cutting area, then cooling of contact area is improved, but maintaining constant separation from disc periphery becomes difficult
Solution Approach 1:
The invention makes the cannula movable along a curved guide, allowing the nozzle to dynamically adjust its position. The cannula can move between an upper position (when the cover is closed) and a lower position (when the cover is open), enabling the nozzle to approach the cutting area for effective cooling while maintaining proper separation through controlled movement.
Solution Approach 2:
The semi-rigid cannula's own flexibility and curvature allow it to self-adjust to maintain the correct separation distance from the disc periphery while reaching the cutting area. The curved geometry of the cannula naturally positions the nozzle at the optimal distance from the rotating disc during operation.
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 enhances cooling efficiency by targeting the specific area of heat generation during cutting, providing uniform and effective cooling without the need for lateral fins, improving the disc's operational life and cutting performance.
Implementation Method 1
a nozzle (5) that pours the coolant on the disc
Implementation Method 2
said nozzle for supplying coolant being coupled to the lower end of the cannula and being movable over a lower sector of the periphery of the disc... said nozzle being attached during the cutting of parts of different thicknesses in a disc contact and penetration area
Data Source
AI summary
The present invention relates to a cooling device for disc cutters, which can include: a curved, tubular guide (6), with a radius of curvature slightly greater than the cutter disc and concentric with the periphery of the disc (2); a curved cannula (4), made of semi-rigid material, mounted inside the curved guide capable of longitudinal movement between two end positions, connected to a tube (3) for supplying coolant to a nozzle (5); and means for attaching the cannula (4) in any position comprised between the two end positions of movement with respect to the curved guide. The nozzle (5) moves over a lower sector (21) of the periphery of the disc, and during the cutting of parts (P) of different thicknesses, said nozzle (5) is located at different heights and facing the disc (2) contact and penetration area in the part (P) to be cut.