Cold-Formed Sheet Embossing for Tool Alignment Traceability
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Solution Overview
Problem
Existing sheet material forming processes, particularly cold rolling, face challenges in maintaining tool alignment, which affects the quality and provenance of the formed material, making it difficult to ensure accurate registration and detect minor misalignments.
Innovation Solution
Incorporating a method where tools form patterns and indicia on the sheet material, preferably through embossing, to monitor alignment and provide traceability, allowing for the detection of misalignment and tracking of product provenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If cold rolling is used to form sheet material with projections, then the sheet material is strengthened through strain hardening, but tool alignment becomes critical and difficult to maintain
Solution Approach 1:
Alignment indicia are formed on the sheet material during the cold rolling process itself, before final inspection or quality control steps. This preliminary marking system allows alignment to be monitored and corrected in real-time during manufacturing, preventing misalignment from compromising the strengthening process.
Solution Approach 2:
The alignment indicia provide visual feedback about tool alignment status during the cold rolling process. By observing the position and clarity of these indicia on the sheet material, operators can detect misalignment and adjust tools accordingly, creating a closed-loop control system that maintains manufacturing precision while enabling strain hardening.
2Shape
If densely packed projections and complex geometries are formed, then the sheet material achieves desired configuration, but tool alignment becomes even more critical and inspection complexity increases
Solution Approach 1:
Alignment indicia serve as an intermediary element that simplifies the inspection process. Instead of directly examining complex geometries and densely packed projections for alignment, operators only need to check the position and integrity of the simpler indicia marks, which act as proxies for overall tool alignment status.
Solution Approach 2:
The alignment indicia are formed as simplified copies or representations of the tool alignment state. These indicia replicate the alignment information in a visually accessible format that is easier to interpret than the complex formed geometry itself, reducing inspection complexity while maintaining accuracy.
3Manufacturing precision
If regular inspection of formed sheet material is performed to ensure proper tool alignment, then alignment quality can be maintained, but production time and cost increase
Solution Approach 1:
The cold rolling process itself creates the alignment indicia on the sheet material as a byproduct of normal operation. The forming tools leave these marks automatically during the strengthening process, eliminating the need for separate inspection operations. Operators simply need to visually check these self-generated indicia, which takes minimal time compared to comprehensive inspections.
4Productivity
If tool alignment is not properly monitored, then production efficiency is maintained, but the quality and provenance of formed sheet material cannot be ensured
Solution Approach 1:
Alignment verification is built into the manufacturing process through the formation of alignment indicia during cold rolling. This preliminary marking system establishes quality assurance early in production, allowing rapid verification of tool alignment without interrupting the production flow or requiring post-processing inspection.
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
This approach enables simple and effective monitoring of tool alignment by unskilled personnel, ensures product traceability, and reduces the complexity and cost of post-forming identification processes, while providing a means to detect misalignment and enhance quality control.
Implementation Method 1
This invention relates to methods and tools for cold forming one or more projections and/or depressions on one or more surfaces of a sheet material
Implementation Method 2
As the material passes between the rollers, it is strengthened by a process known as strain hardening
Data Source
AI summary
A formed sheet metal material (100) and methods, tools (1, 2, 8) and apparatus for forming the sheet metal material (100) in which a pattern of projections and depressions are cold worked in a first portion (101) and, simultaneously, indicia (103) is embossed in a second portion (102) of the sheet material (100). The cold worked portion (101) is formed with the projections and depression configured and distributed such that lines drawn on a surface of the formed sheet material (100) between adjacent rows of projections and depressions are not rectilinear. The indicia (103) is indicative of the alignment between the tools (1, 2, 8).