Drill Spindle Fluid Conveyor for Consistent Cooling
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Solution Overview
Problem
Existing drilling tools face challenges in reliably controlling the cooling and lubrication fluid provision during operations, leading to inconsistent fluid delivery, which affects drilling precision and causes overheating due to either excessive or insufficient fluid supply.
Innovation Solution
A spindle design with a fluid conduit system that includes a socket portion and a fluid conveyor with specific diameters to prevent fluid accumulation in the interface space between the spindle and drill bit, ensuring consistent fluid delivery through a narrower fluid conduit and conveyor, which connects directly to the drill bit, preventing peripheral fluid gathering and ensuring continuous lubrication and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a fluid conduit with larger diameter is used to ensure sufficient fluid flow, then fluid delivery is improved, but fluid accumulates in the interface space between spindle and drill bit causing inconsistent fluid delivery
Solution Approach 1:
The patent applies parameter changes by precisely controlling the diameter of the fluid conduit to be narrower than the interface space dimensions. This parameter optimization allows sufficient fluid flow while preventing accumulation, resolving the contradiction between fluid quantity and delivery consistency.
2Object-affected harmful factors
If fluid is provided through the rotating spindle during drilling, then cooling and lubrication is achieved, but fluid provision varies over time with too much fluid at start-up and too little during operation
Solution Approach 1:
The patent uses parameter changes by optimizing the fluid conduit diameter relative to the interface space, ensuring stable fluid provision throughout the drilling operation. The narrower conduit prevents fluid accumulation that causes variability, maintaining consistent cooling and lubrication from start-up through completion.
3Temperature
If too much fluid is provided through the drill bit, then cooling and lubrication is excessive, but drilling precision is reduced and excess fluid must be washed away
Solution Approach 1:
The patent applies parameter changes by precisely controlling the fluid conduit diameter to deliver the optimal amount of fluid. This prevents both overheating and excessive fluid application, maintaining drilling precision while providing sufficient cooling and lubrication.
4Quantity of substance
If the fluid conduit diameter is increased to improve fluid flow, then fluid delivery is enhanced, but fluid gathers in the periphery of the interface space
Solution Approach 1:
The patent uses parameter changes by optimizing the fluid conduit diameter to be narrower than the interface space. This ensures adequate fluid flow while preventing peripheral accumulation, maintaining uniform fluid distribution throughout the drilling 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 provides a reliable and predictable fluid provision, enhancing drilling precision by maintaining optimal lubrication and cooling throughout the operation, reducing the risk of overheating and fluid excess, thereby improving the overall drilling process.
Implementation Method 1
the fluid conveyor having a third diameter which is narrower than the first diameter, so as to avoid that fluid is gathered in a periphery of the interface space between the fluid conduit and the drill bit
Implementation Method 2
provide a fluid for cooling and/or lubrication through the drill bit
Implementation Method 3
provide a fluid for cooling and/or lubrication through the drill bit
Data Source
AI summary
A spindle of a drilling tool includes a socket portion having a first axial length (a1) of a first diameter (d1) for receiving and attaching a drill bit to the spindle. The spindle includes a fluid conduit having a second diameter (d2) narrower than (d1) for conveying a fluid to the socket portion. An interface space with diameter (d1) is formed between the fluid conduit and the drill bit when the drill bit is installed in the socket portion. A fluid conveyor, having a third diameter (d3) narrower than (d1), connects the fluid conduit to the drill bit to avoid fluid gathering in a periphery of the interface space. The fluid conveyor includes a first O-ring abutting a mouth of the fluid conduit, a second O-ring abutting a mouth of a fluid channel of the drill bit, and a spring between the first and second O-rings.