Tool Holder Cooling Nozzle for Straight Spray at Rotating Cutters
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Solution Overview
Problem
Current cooling water spray systems in machine tools face inefficiencies due to centrifugal force dispersing water, making it difficult to directly reach the cutting tool, leading to reduced machining speed and precision, and environmental issues like mist generation.
Innovation Solution
A Tool Holder with Straight Spray of Cooling Water that converts centrifugal force into centripetal force, using a cap nozzle unit with drain holes and a side rod unit to efficiently direct cooling water to the cutting tool, minimizing scattering and ensuring consistent delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cooling water is sprayed using an external nozzle on the side, then the working environment is improved, but the cooling water cannot directly reach the cutting tool face due to centrifugal force and chip interference
Solution Approach 1:
The patent embeds the cooling water supply system within the tool holder structure itself, nesting the nozzle inside the tool holder body rather than using an external nozzle. This allows cooling water to be delivered directly to the cutting tool face from the interior, overcoming the limitations of external spraying where centrifugal force and chips prevent direct delivery.
Solution Approach 2:
The tool holder acts as an intermediary device that channels cooling water from the supply source directly to the cutting tool face. By incorporating internal passages and nozzles within the tool holder, it mediates the delivery of cooling water, ensuring it reaches the precise location needed despite the rotational motion and chip interference.
2Manufacturing precision
If cooling water is sprayed at 360 degrees around the cutter, then the cooling coverage is improved, but the cooling water scatters due to spindle rotation generating excessive mist
Solution Approach 1:
Instead of uniform 360-degree spraying, the patent employs strategically positioned nozzles that direct cooling water locally and precisely where needed on the cutting tool face. The nozzle arrangement and angling are optimized to target specific areas, providing effective cooling coverage without unnecessary dispersion that would create mist.
Solution Approach 2:
The cooling water is delivered to the cutting zone before the chips and heat fully develop, and the nozzle positioning is pre-configured to account for the rotational motion. By anticipating the tool's position and directing water accordingly, the system achieves effective cooling without the scattering and mist generation associated with post-rotation spraying.
3Manufacturing precision
If internal supply method is used to spray cooling water, then the cooling water delivery is improved, but the cooling water scatters when the spindle rotates limiting cooling action
Solution Approach 1:
The patent incorporates dynamic nozzle positioning or adjustable spray angles that adapt to the spindle rotation. The nozzle configuration allows the cooling water trajectory to dynamically track with the cutting tool face position, maintaining direct delivery effectiveness throughout the rotation cycle rather than relying on static positioning that becomes ineffective due to centrifugal force.
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 solution enhances cooling water spray efficiency, increasing machining speed and precision, extending tool lifespan, and reducing production costs by effectively lowering cutting heat and improving the working environment.
Implementation Method 1
the cooling water in the retention space is discharged through the plurality of drain holes while rotating in the same direction as the tool by receiving rotational force from the rotating tool in the retention space, and secures straightness toward the end of the tool by the centripetal force formed in the retention space
Data Source
AI summary
A Tool Holder with Straight Spray of Cooling Water for Machine Tool includes: a body that provides a mounting space in which the tool is mounted, and is linked to the rotational motion of the machine tool; a housing unit that covers the outer surface of the body; a cap nozzle unit that is disposed to surround the outer circumferential surface of the tool while being connected to the lower side of the housing unit; an adapter unit that is mounted on the machine tool, providing a passage for cooling water supplied from the cooling water supply unit, and determining a mounting position of the body to the machine tool; and a side rod unit that connects the adapter unit and the housing unit while being connected to the side of the housing unit, and moves the cooling water supplied from the adapter unit to the cap nozzle unit.