Annular Flange Removal Assembly for Precise Weld Cutting
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Solution Overview
Problem
Existing methods for removing flanges and welds from pressure vessels are inefficient, often resulting in excessive material removal from fittings, which can render them unusable, and are time-consuming due to the need for manual adjustment and repeated grinding processes.
Innovation Solution
A flange removal tool assembly featuring an annular cutting tool with a 90-degree cutting tip, positioned by a cutting tool actuator, that precisely removes the flange and weld of a device from a pressure vessel fitting while minimizing material removal from the fitting, using a vise to secure the vessel and a motor-driven spindle for controlled cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a grinder or specialized hand tool is used to remove the weld and flange, then the weld and flange can be removed, but excessive material is removed from the fitting flange, rendering it unusable
Solution Approach 1:
A guide ring is introduced as an intermediary component that fits over the fitting and device assembly. The guide ring provides a precise reference surface and physical barrier that prevents the cutting tool from removing excessive material from the fitting flange, ensuring only the intended weld and device flange are removed
Solution Approach 2:
The manual, operator-dependent grinding process is replaced with an automated cutting tool system that uses a guide ring for precise positioning and depth control. This mechanical substitution eliminates the variability and excessive material removal associated with manual tools
2Manufacturing precision
If a specialized hand tool is used to remove the weld and flange, then the weld and flange can be removed, but the process is time-consuming due to manual adjustment and repeated operations
Solution Approach 1:
The guide ring is pre-positioned on the fitting and device assembly before the cutting operation begins. This preliminary action establishes the correct cutting depth and positioning in advance, eliminating the need for repeated manual adjustments during the cutting process
Solution Approach 2:
The manual adjustment and inspection process is replaced with an automated cutting tool system that maintains consistent depth and positioning throughout the operation, significantly reducing the time required for flange removal while maintaining precision
3Manufacturing precision
If manual grinding is used to remove the weld and flange, then the weld and flange can be removed, but the operator must repeatedly adjust and inspect, reducing efficiency
Solution Approach 1:
The guide ring serves as a mediator that provides continuous visual and physical reference during the cutting operation. Operators can quickly verify progress by observing the guide ring's position relative to the fitting, eliminating time-consuming measurement and adjustment cycles
Solution Approach 2:
The manual measurement and adjustment system is replaced with a guide ring-based reference system that provides immediate visual feedback and maintains consistent cutting depth, dramatically reducing the time required for precision material removal
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
Enables consistent and accurate removal of flanges and welds, preventing damage to the fittings and allowing for quick replacement of devices, while ensuring the fittings can be reused, thus improving efficiency and reducing material waste.
Implementation Method 1
A flange removal tool is provided that utilizes an annular cutting tool with a 90-degree cutting tip to remove the weld and flange
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A flange removal tool assembly includes a cutting tool actuator, vise, annular cutting tool, and center support and accurately removes a weld and a flange of a device, while the device is attached to a fitting in a pressure vessel. Once the weld and the flange are removed, the device can be removed from the fitting and replaced. The assembly allows the operator to quickly inspect the flange of the device during the removal process and reduces the probability of damaging a flange of the fitting.