Dual-Diameter Conduit Offset Bender With Rotating Dies
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Solution Overview
Problem
Conventional conduit offset benders are limited to bending only one size of conduit, necessitating separate tools for different diameters.
Innovation Solution
A conduit offset bender design featuring upper and lower dies with offset grooves of different sizes, compression springs, guide plates, and an actuation device, allowing for the bending of two different conduit diameters with a single tool by rotating the dies and reattaching guide plates with quick release pins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single conduit bender is designed for one specific conduit diameter, then the bending precision for that diameter is optimized, but the tool cannot bend other diameters requiring multiple separate tools
Solution Approach 1:
The conduit bender is designed with interchangeable guide plates and adjustable die positioning that allow the same tool to bend multiple conduit diameters (e.g., 1/2 inch and 3/4 inch). The guide plates have different configurations that can be swapped out, and the dies can be positioned at different locations on the bender body, enabling one tool to perform functions that previously required multiple specialized tools
Solution Approach 2:
The bender is divided into modular components including separate guide plates, adjustable die assemblies, and interchangeable blocks that can be reconfigured. This segmentation allows the user to disassemble and reconfigure parts for different conduit sizes without redesigning the entire tool, maintaining bending precision across multiple applications
2Manufacturing precision
If multiple separate benders are used for different conduit diameters, then bending precision for each size is maintained, but tool quantity and storage space increase
Solution Approach 1:
A single multi-functional bender replaces multiple single-purpose benders by incorporating adjustable components that maintain precision across different conduit diameters. The tool includes interchangeable guide plates and adjustable die positions that ensure accurate bending for each specific diameter while consolidating what would have been separate tools into one unit
Solution Approach 2:
Multiple bending capabilities are merged into one tool by integrating different guide plates, adjustable dies, and reconfigurable blocks that can be arranged to handle various conduit sizes. This consolidation reduces the total number of tools from multiple separate benders to a single versatile unit while preserving the bending accuracy of each specific size
3Ease of operation
If the bender uses fixed dies for specific conduit sizes, then the bending operation is simple, but switching between different conduit diameters requires changing entire die sets
Solution Approach 1:
The bender transitions from fixed dies to adjustable and interchangeable die systems. The dies can be repositioned along the bender body or quickly swapped with minimal disassembly, allowing dynamic adaptation to different conduit diameters. This dynamic configuration reduces the time required to switch between sizes compared to replacing entire die sets, while maintaining the simplicity of the bending operation once configured
4Adaptability or versatility
If the bender is designed to accommodate multiple conduit sizes with adjustable components, then versatility increases, but the device structure becomes more complex
Solution Approach 1:
The complex functionality is achieved through segmentation into modular components: interchangeable guide plates, adjustable die assemblies, and reconfigurable blocks. Each segment performs a specific function and can be independently adjusted or replaced, allowing the system to handle multiple conduit sizes without requiring a completely complex integrated mechanism. The modular nature simplifies the overall structure compared to a fully integrated adjustable system
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 bending of two different conduit diameters using a single tool, reducing the need for multiple benders and simplifying the process of switching between sizes by utilizing the spring mechanism to maintain alignment.
Implementation Method 1
two compression springs retained in either the two upper spring counterbores or the two lower spring counterbores
Data Source
AI summary
A conduit offset bender preferably includes an upper die, a lower die, a first guide plate, a second guide plate, a force transfer plate, two compression springs and an actuation device. The upper die includes an upper die base, a first pair of lugs, a second pair of lugs, a first boss flange and a second boss flange. The lower die includes a lower die base, two first lower boss flanges and two second lower boss flanges. Larger and smaller offset grooves are formed in the upper and lower dies. The two compression springs are retained in spring counterbores formed in the upper and lower boss flanges. A bottom of the first and second guide plates are attached to the lower die base. The actuation device includes a first handle plate, a second handle plate, a pressure roller, a cam roller, a pivot pin and a retention pin.