Flanged Metal Pipe Forming for Higher Load-Direction Rigidity
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Solution Overview
Problem
Existing forming devices for metal pipes with flanges lack sufficient strength and rigidity, particularly in directions where loads are applied.
Innovation Solution
A forming device with a forming tool comprising first and second dies facing each other in a first direction and a third die on one side, where at least one of the first or second dies is divided to form flange portions by sandwiching the metal pipe material in a second direction, enhancing strength and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional forming devices with paired upper and lower dies are used, then the manufacturing process is simple, but the strength and rigidity of the metal pipe in load-bearing directions are insufficient
Solution Approach 1:
The forming tool is segmented into multiple independent dies: first and second dies for forming the pipe body, and third and fourth dies for forming flange portions. This segmentation allows each die to independently control the geometry and reinforcement features, enabling the metal pipe to achieve enhanced strength and rigidity through strategically positioned flange portions while maintaining a manageable overall device structure.
Solution Approach 2:
The invention transitions from a conventional two-die pairing arrangement to a multi-die configuration that operates in multiple directions. The third and fourth dies are positioned laterally to form flange portions extending in directions perpendicular to the main pipe axis, adding dimensional complexity to the forming process and enabling reinforcement in transverse load-bearing directions that a simple paired-die system cannot address.
2Reliability
If flange portions are added to improve strength and rigidity, then structural integrity is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The flange portions are formed during the initial forming process by the third and fourth dies acting on the metal pipe material before final pipe assembly. This preliminary formation of reinforcement features integrates the flange creation into the primary manufacturing step, avoiding the need for separate post-processing operations to add strengthening elements, thereby maintaining ease of manufacture while achieving enhanced structural integrity.
Data Source
AI summary
A forming device forms a metal pipe with a flange and includes a forming tool that forms the metal pipe, in which the forming tool includes a first die and a second die facing each other in a first direction in a cross-sectional view, and a third die disposed on at least one side of a metal pipe material in a second direction intersecting the first direction, and at least one of the first die and the second die is divided in the second direction and sandwiches a part of the metal pipe material in the second direction to form a flange portion.