Cross Edge Rolling With Step Support for Selective Strip Thickening
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Solution Overview
Problem
Existing cross edge rolling methods deform both longitudinal edge strips and the strip body, making it difficult to achieve selective thickening of only one longitudinal edge strip without affecting the strip's overall shape.
Innovation Solution
A method involving bending the strip along parallel lines to create a step that supports the longitudinal edge strip during compression, allowing for selective thickening of one edge strip while minimizing deformation of the strip body, using a combination of rollers to apply transverse compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cross edge rolling is applied to thicken longitudinal edge strips, then the edge strips become thicker and triangular in cross-section, but both longitudinal edge strips and the strip body are deformed making it difficult to achieve selective thickening
Solution Approach 1:
The strip is segmented into three distinct zones by creating a step: a first longitudinal edge strip zone to be thickened, a step zone serving as support, and a second longitudinal edge strip zone. This segmentation allows the compression force to be localized to only the first longitudinal edge strip while the step provides a rigid support boundary that prevents deformation of the strip body and other zones.
Solution Approach 2:
The step structure creates local quality differences across the strip width. The region at the step has increased thickness and rigidity, providing localized support that prevents deformation. This allows the compression to be applied locally to only the desired longitudinal edge strip without affecting other regions of the strip.
2Manufacturing precision
If compression force is applied to thicken the longitudinal edge strip, then the edge strip becomes thicker, but the strip body also deforms and changes shape
Solution Approach 1:
The step acts as an intermediary support structure between the compression force and the strip body. When the edging roller applies compression to thicken the longitudinal edge strip, the step provides a rigid abutment that absorbs and redirects the compression forces, preventing them from propagating to and deforming the strip body.
Solution Approach 2:
The step is created in advance of the cross edge rolling process through preliminary bending and forming operations. This preliminary action prepares the strip by creating the support structure that will prevent unwanted deformation during the subsequent compression process.
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
The method effectively thickens the longitudinal edge strip while maintaining the strip's overall shape, enabling the production of C-profile rails with enhanced structural integrity.
Implementation Method 1
The strip is bent in opposite directions along two parallel bending lines extending in a longitudinal direction of the strip
Implementation Method 2
a longitudinal edge strip of the strip becomes thicker, is referred to as 'cross edge rolling'
Implementation Method 3
The strip consists of a plastically deformable material, in particular of metal
Data Source
AI summary
A cross edge rolling process for increasing a thickness of a strip in longitudinal edge strips on both longitudinal sides of the strip. According to the invention, this is achieved in that firstly a step extending in the longitudinal direction of the strip is produced by means of a roll profiling process, wherein the strip is supported during the cross edge rolling process on said step against a compression force acting transversely to the strip, so that the strip is not compressed outside the longitudinal edge strip. After the edging process for increasing the thickness of the longitudinal edge strips, the strip is bent by means of a roll profiling process to form a C-profile rail.