Metal Sheet Repair Frame for One-Sided Cutting and Welding
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Solution Overview
Problem
Conventional methods for repairing metal sheets, such as steel belts, are limited by the size of cutouts, require manual welding from both sides, and involve complex processes that can introduce defects and are time-consuming, especially when dealing with large defects or heavy metal sheets.
Innovation Solution
An apparatus with a base unit that remains attached to the metal sheet for continuous bracing during cutting and welding, allowing for automatic welding of a replacement metal disc without repositioning, and enabling welding from only one side, using a cutting unit with a rotating cutting force and a welding unit with a rotating platform for efficient repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional manual welding from both sides is used, then welding can be performed on damaged areas, but the repair process becomes time-consuming and complex
Solution Approach 1:
Instead of welding from both sides as in conventional methods, the patent inverts the approach by performing welding from only one side using a specialized welding apparatus that can access and weld the damaged area from a single side, thereby reducing repair time while maintaining welding quality
Solution Approach 2:
The welding process is segmented into controlled passes with the welding torch moving in specific patterns, allowing comprehensive welding coverage from one side only, eliminating the need for flipping or accessing the other side of the metal sheet
2Stability of the object's composition
If bracing structure is used during cutting, then cutting stability is improved, but the process becomes more complex and introduces defects
Solution Approach 1:
The bracing structure is merged with the cutting apparatus itself, where the cutting machine's frame and support structures serve dual purposes as both cutting equipment and bracing elements, eliminating the need for separate bracing structures and reducing process complexity
Solution Approach 2:
The cutting apparatus is designed with multi-functionality, serving both as the cutting tool and as the bracing structure that stabilizes the metal sheet during the cutting process, thereby simplifying the overall process while maintaining cutting stability
3Adaptability or versatility
If base unit is removed between cutting and welding, then equipment repositioning is possible, but the metal sheet stability is compromised
Solution Approach 1:
The cutting and welding operations are merged into a single continuous process using an integrated apparatus that performs both cutting and welding without removing the base unit, thereby maintaining metal sheet stability while providing the versatility of combined operations
Solution Approach 2:
The apparatus is designed with multi-functionality to perform both cutting and welding operations from the same base position, eliminating the need to remove or reposition the base unit between operations, thus maintaining stability while providing operational versatility
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 larger cutouts, reduces repair time, minimizes defects, and maintains the metal sheet's stability during the process, allowing for efficient and precise repair of metal sheets without the need for manual welding from both sides.
Implementation Method 1
a motor for providing a rotating cutting force for the cutting unit
Implementation Method 2
a gear ring on the fixed platform; a weld rotation motor for rotating a rotation platform over the gear ring; a drive gear configured to contact the gear ring, the drive gear being further configured to be rotated by the weld rotation motor to rotate the rotation platform over the gear ring
Implementation Method 3
a welding assembly configured to automatically weld a replacement metal piece to the metal sheet, the welding assembly comprising a torch configured to perform a weld
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
An apparatus for repairing a metal sheet and method of operating the same are provided. The apparatus includes: a base unit including: a frame and an attachment feature on the frame, a cutting unit removably attachable to the base unit to cut out a damaged portion of the metal sheet, and a welding unit removably attachable to the base unit. The cutting unit includes: a cutting arm including a cutting blade, and a motor for operating the cutting arm. The welding unit includes: a fixed platform, a weld movement motor for moving a moveable platform on the fixed platform, and a welding assembly, attached to the moveable platform, to automatically weld a replacement piece to the metal sheet. In operation, the frame is continuously attached to the metal sheet during cutting of the damaged portion and welding of the replacement piece, providing a stable and repeatable frame of reference.