Grooved Fluid Supply Structure for Fine-Bubble Machining Cooling
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Solution Overview
Problem
Conventional fluid supply apparatuses for machine tools face challenges in providing adequate lubricity, penetrability, and cooling effects due to inefficient fluid penetration and high costs associated with gas emission systems, and require complex alignment of separate metal parts, which reduces efficiency and increases costs.
Innovation Solution
A fluid supply apparatus with a housing and internal structure featuring a shaft portion with protrusions and grooves, designed to swirl and guide the fluid, enhancing lubricity and penetrability through the generation of fine bubbles, which improves cooling and reduces tool wear, and is easier to manufacture with integrated components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a gas emitting means is provided to forcibly infiltrate machining liquid into contact portion, then penetration ability is improved, but apparatus cost and size increase
Solution Approach 1:
The invention extracts the gas emission function from a separate apparatus and integrates it into the fluid supply system through a simple mixing chamber where ambient air is drawn in and mixed with the machining liquid, eliminating the need for complex gas emission equipment while maintaining penetration ability
Solution Approach 2:
The invention merges the fluid supply function with air mixing function into a single integrated nozzle assembly, where the mixing chamber combines ambient air with machining liquid in one component, reducing apparatus complexity and cost
2Ease of manufacture
If air is emitted in the same direction as grindstone rotation, then gas emission is simplified, but machining liquid cannot sufficiently reach contact portion
Solution Approach 1:
Instead of emitting air in the direction of grindstone rotation, the invention uses the centrifugal force generated by the rotating grindstone to draw air inward toward the contact portion, inverting the conventional approach and enabling sufficient liquid penetration despite simplified emission
3Adaptability or versatility
If spiral blade body and flip-flop phenomenon generating shaft body are separate parts, then functional requirements are met, but alignment complexity and machining precision requirements increase
Solution Approach 1:
The invention merges the spiral blade body and flip-flop phenomenon generating shaft body into a single integrated shaft component, eliminating the need for precise alignment between separate parts while maintaining all required functions through carefully designed integrated features
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 apparatus improves machining precision, extends tool life, reduces maintenance costs, and simplifies assembly by providing optimized fluid flow and enhanced cooling effects while decreasing surface tension and increasing penetrability.
Implementation Method 1
an internal structure which is housed in the hosing. The internal structure includes a shaft portion and a plurality of protrusions protruding from the outer circumferential surface of the shaft portion. A plurality of flow paths are formed between the plurality of protrusions
Implementation Method 2
a groove having a predetermined depth from the outer circumferential surface of the shaft portion is formed in each of at least a part of the plurality of flow paths
Data Source
AI summary
A fluid supply apparatus according to an embodiment of the invention includes a housing and an internal structure which is housed in the hosing. The internal structure includes a shaft portion and a plurality of protrusions protruding from the outer circumferential surface of the shaft portion. A plurality of flow paths are formed between the plurality of protrusions, and a groove having a predetermined depth from the outer circumferential surface of the shaft portion is formed in each of at least a part of the plurality of flow paths.