Concrete Form Tie Rod with Coined Break-Back Regions
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Solution Overview
Problem
Existing tie rods for concrete forming systems are difficult to position and the portions extending beyond the formed concrete wall are hard to remove cleanly after curing.
Innovation Solution
A tie rod is formed by flattening a wire in multiple planes and passing it through a punch press machine to create coined regions, allowing for easier alignment and clean snapping off after concrete curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional tie rods are used in concrete forming systems, then the panels can be held spaced apart, but the tie rods are difficult to position relative to the form panels
Solution Approach 1:
The tie rod is pre-formed with flattened sections and coined regions at specific locations before installation. These pre-formed features align with corresponding features on the form panels, enabling easy positioning during installation without requiring complex adjustment mechanisms.
Solution Approach 2:
The tie rod has non-uniform cross-sectional geometry with specific portions flattened in perpendicular planes and coined regions formed at ends. These localized modifications create alignment features that simplify positioning at critical locations while maintaining structural integrity in other portions.
2Ease of operation
If conventional tie rods are used, then the panels remain secured, but the portions extending beyond the concrete wall are difficult to remove cleanly
Solution Approach 1:
The tie rod is pre-formed with coined regions that create controlled weakness points before installation. After concrete curing, these pre-formed regions allow the tie rod to be cleanly snapped at predetermined locations, eliminating the need for difficult cutting or grinding operations.
Solution Approach 2:
The tie rod geometry is modified by flattening selected portions in perpendicular planes and forming coined regions, which change the local mechanical properties. These parameter changes create regions of reduced strength that facilitate clean breaking at specific locations while maintaining overall structural strength.
Data Source
AI summary
A method of forming one or more tie rods that includes flattening a main body of a wire in a first selected plane to form a flattened main body, further flattening selected portions of the flattened main body in a second plane perpendicular to the first plane to form one or more break back regions, and then passing the wire through a punch press machine to form one or more coined regions in one or more ends of the wire, thus forming the tie rod.