Metal Pipe Flange Forming with a Misalignment-Correcting Third Die
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Solution Overview
Problem
Existing forming devices struggle to form metal pipes with precise and uniform flange sizes due to difficulties in regulating the expansion of flange portions during the forming process.
Innovation Solution
A forming device with a forming tool comprising first and second dies facing each other, and a third die that regulates the flange portion, allowing for correction of misalignment until clamping, and moves away from the material as the first and second dies approach, using a tapered structure and elastic mechanism to control flange expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a forming device uses only first and second dies for forming metal pipe, then the device structure is simple, but the flange portion expansion cannot be regulated and misalignment cannot be corrected
Solution Approach 1:
The forming tool is segmented into multiple independent dies: first die for initial forming, second die for opposing forming, and third die for flange regulation. Each die performs a specific function, allowing precise control over flange expansion while maintaining overall system manageability
Solution Approach 2:
The third die acts as an intermediary component between the first and second dies, specifically regulating the flange portion during forming. This intermediate element provides the necessary control mechanism for flange size uniformity without requiring complete redesign of the entire forming system
2Manufacturing precision
If the third die remains stationary during forming, then the device structure is simple, but the flange portion misalignment cannot be continuously corrected
Solution Approach 1:
The third die is designed with dynamic capability to move in the width direction during the forming process. This movement allows the third die to continuously track and correct flange portion misalignment as the first and second dies clamp the metal pipe, ensuring consistent alignment accuracy throughout the forming operation
3Manufacturing precision
If the third die moves away from metal pipe material as first and second dies approach, then the flange expansion is properly regulated, but the device requires complex coordination mechanisms
Solution Approach 1:
The forming process employs periodic action where the third die moves away from the metal pipe material in coordination with the approaching first and second dies. This periodic movement pattern ensures that flange expansion is regulated at the appropriate stage of forming, preventing excessive expansion while allowing necessary dimensional control
Solution Approach 2:
The coordinated movement between the three dies creates a dynamic forming system where the third die's retraction timing is synchronized with the clamping action of the first and second dies. This dynamic coordination enables precise flange dimension control through the interplay of die movements rather than static positioning
Data Source
AI summary
A forming device is a forming device that forms a metal pipe with a flange and includes a forming tool for forming the metal pipe, in which the forming tool includes a first die and a second die that face each other in a first direction in a cross-sectional view, and a third die for regulating a planned flange portion of a metal pipe material, and the third die continues to correct misalignment of the planned flange portion until the first die and the second die are clamped.