Ratcheting Tube Flaring Tool With Clutch Over-Expansion Control
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Solution Overview
Problem
Conventional tube expanding tools often result in inconsistent and rough flares with burrs, especially when used in confined spaces, due to awkward access and mechanical limitations.
Innovation Solution
A manually operable flaring tool with a ratchet assembly, clutch system, and height guide for precise control, ensuring consistent and smooth flaring of malleable tubes by preventing over-expansion and accommodating various diameters through rotatable gripping dies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional tube expanding tools are used, then tube expansion can be achieved, but the flare quality is inconsistent and rough with burrs
Solution Approach 1:
The flare forming head is designed to reciprocate (move back and forth) during the flaring operation, dynamically adjusting the expansion force to achieve consistent and smooth flares without burrs, resolving the issue of inconsistent flare quality with conventional static tools
Solution Approach 2:
A clutch assembly provides mechanical feedback control by disengaging when the tube reaches the proper flare expansion, preventing over-expansion and ensuring consistent flare quality across multiple operations
2Adaptability or versatility
If conventional flaring tools are used in confined spaces, then tube expansion can be performed, but access to the actuating mechanism is awkward and encumbered
Solution Approach 1:
The actuating mechanism is redesigned with a ratchet assembly that operates in a different spatial dimension, allowing the user to apply force perpendicular to the tool axis rather than requiring awkward angular access, enabling easy operation in confined spaces
3Ease of operation
If manual actuation is used to overcome the biasing member force, then the flare forming head can be actuated, but over-expansion may occur
Solution Approach 1:
The clutch assembly monitors the expansion process and automatically disengages when the tube reaches the correct flare diameter, providing precise control that prevents over-expansion while maintaining simple manual actuation through the ratchet mechanism
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 tool provides consistent, smooth, and easy-to-use flaring in confined spaces, ensuring accurate and reliable expansion of tubes without burrs, enhancing user experience and operational efficiency.
Implementation Method 1
a biasing member urging the flare forming head axially towards the secured tube
Implementation Method 2
a clutch plate providing a drive interface between the first clutch shaft and the second clutch shaft
Data Source
AI summary
Tube flaring tool comprising a tube receiving region comprising first and second gripping dies retractable with respect to each other and positionable to cooperatively define an opening for receiving a tube; a first clutch shaft; a support housing having a bore for receiving a second clutch shaft; a clutch plate; a flare forming head operable to flare the free end of the tube; and a biasing member urging the flare forming head axially. The first clutch shaft may have an outer configuration adapted to be engaged by a 12 point or ⅜″ square drive SAE ratchet wrench for creating mechanical advantage to actuate the flare forming head. When the force that the biasing member urges the flare forming head axially is overcome, the clutch plate disengages from the second clutch shaft such that further actuation of the first clutch shaft does not rotate the flare forming head shaft, preventing over-flaring.