Dual-Jaw Sheet Metal Folding for Precise Hem and S-Bends
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Solution Overview
Problem
Conventional methods for folding sheet metal are cumbersome, time-consuming, and require expertise with multiple tools, often resulting in misaligned or poor-quality folds, especially for customized applications like HVAC ducts.
Innovation Solution
A tool with a first pair of jaws spaced at a first distance and a second pair of jaws spaced at a greater second distance, allowing for the formation of primary and secondary bends to create customized sheet metal segments without the need for multiple tools or expertise, using a body to span between the jaws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional folding techniques are used, then multiple tools are required, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines multiple folding functions into a single tool by integrating two pairs of jaws with different spacing capabilities. The first pair of jaws performs initial folding operations while the second pair completes secondary folding, eliminating the need to switch between multiple tools and reducing operational complexity.
Solution Approach 2:
The tool is designed with universal functionality to perform both primary and secondary folding operations on sheet metal. The body structure accommodates two pairs of jaws that can handle different folding requirements, making the tool versatile for various HVAC duct fabrication tasks without requiring specialized tools for each operation.
2Adaptability or versatility
If conventional folding techniques are used, then multiple tools are required, but expertise with multiple tools is needed
Solution Approach 1:
The patent merges the functionality of multiple specialized tools into one integrated device. By combining primary and secondary folding capabilities within a single tool body, it reduces the complexity of managing multiple tools while maintaining adaptability for different folding operations.
Solution Approach 2:
The tool achieves universality by incorporating two pairs of jaws with different spacing capacities into one device. This allows a single tool to perform both primary and secondary folding operations, reducing the need for workers to master multiple specialized tools while maintaining versatility for various duct fabrication tasks.
3Manufacturing precision
If conventional folding techniques are used, then folds may be misaligned, but the quality of folds deteriorates
Solution Approach 1:
The tool segments the folding process into two distinct stages performed by two pairs of jaws. The first pair creates the primary bend with precise alignment, and the second pair completes the secondary bend. This segmentation ensures that each folding stage maintains proper alignment, resulting in high-quality, precisely aligned folds.
Solution Approach 2:
The patent replaces the manual, less precise conventional folding method with a structured mechanical system featuring two pairs of jaws. This mechanical system provides controlled bending forces and precise geometric constraints, ensuring consistent alignment and fold quality without relying on operator skill alone.
4Adaptability or versatility
If multiple tools are used, then functionality is limited, but the complexity of operation increases
Solution Approach 1:
The tool achieves universality by incorporating two pairs of jaws with different spacing capacities into one device. This allows a single tool to perform both primary and secondary folding operations, reducing the need for workers to master multiple specialized tools while maintaining versatility for various duct fabrication tasks.
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 efficient, high-quality folding of sheet metal onsite for HVAC applications, such as plenum end caps and odd-sized duct segments, reducing time and labor while ensuring precise alignment.
Implementation Method 1
the first pair of jaws is configured to form a hem on the piece of sheet metal via the edge portion being bent when the first pair of jaws is moved relative to the piece of sheet metal
Implementation Method 2
the second pair of jaws is configured to bend the piece of sheet metal containing the hem when the second pair of jaws is moved relative to the piece of sheet metal
Data Source
AI summary
This disclosure enables various tools for folding pieces of sheet metal and methods of manufacture and use thereof. For example, some of such tools include a first pair of jaws spaced apart from each other at a first distance, a second pair of jaws spaced apart from each other at a second distance greater than the first distance, and a body spanning between the first pair of jaws and the second pair of jaws. By having the second distance being greater than the first distance, a user may use the body to form a primary bend (e.g., a hem) on a piece of sheet metal via bending the piece of sheet metal via the first pair of jaws, or vice versa, and then a secondary bend of the primary bend to form a desired shape (e.g., an S-shape) on the piece of sheet metal via the second pair of jaws, or vice versa.