Shaped Roller Geometry for Polygonal Tube Profiling
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Solution Overview
Problem
Current profiling line technologies face challenges in accurately closing polygonal section tubes, such as rectangular or square tubes, due to the need for complex adjustments of rollers and the inability to precisely achieve fillet radii, leading to potential twisting and imperfect coplanarity of upper sides.
Innovation Solution
The operating unit employs shaped rollers with conical and end portions that allow for precise bending and alignment, reducing the need for complex adjustments and preventing twisting, by having a rotating axis that can be horizontal and using end portions to maintain edge position, enabling precise fillet radii and correct closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional cylindrical rollers with inclined rotating axes are used to guide and close the profiled element, then the rollers can be positioned outside the profiled element where space is available, but complex adjustment devices are required to achieve correct inclination and position, and precise fillet radii cannot be realised
Solution Approach 1:
The invention changes the geometric parameters of the rollers from cylindrical to shaped rollers with conical portions and end portions. This parameter change allows the rollers to inherently provide the correct inclination and positioning without complex adjustment devices, while simultaneously achieving precise fillet radii through the specific geometry of the conical and end portions
Solution Approach 2:
The invention applies curved surfaces by using conical portions and end portions on the rollers instead of cylindrical surfaces. The conical shape with its varying diameter provides automatic alignment and correct inclination, while the end portions with specific curvature enable precise fillet radius formation, eliminating the need for complex mechanical adjustments
2Reliability
If complex adjustment devices are used to achieve correct roller inclination and position, then the upper sides can be brought into coplanar position, but the adjustment process becomes considerably laborious and requires complex set-up software
Solution Approach 1:
The shaped rollers are designed to self-align and self-adjust to the correct inclination and position through their geometric configuration. The conical portions automatically guide the profiled element into the correct position, and the end portions inherently maintain the coplanar alignment of upper sides, eliminating the need for laborious manual adjustments and complex control software
Solution Approach 2:
The rollers are pre-configured with specific geometric features (conical portions and end portions) that automatically perform the alignment and positioning functions during operation. This preliminary geometric configuration ensures that the coplanarity of upper sides is achieved automatically as the profiled element passes through, without requiring subsequent complex adjustments
3Device complexity
If traditional rollers are used for closing the profiled element, then the structure can be simple, but the two upper sides are not always arranged perfectly coplanarly and the edges are not perfectly flanked, requiring very accurate adjustments
Solution Approach 1:
The invention changes the structural parameters of the rollers by adding conical portions and end portions to the traditional cylindrical shape. This structural modification maintains relative simplicity while dramatically improving edge alignment precision, as the conical geometry provides automatic convergence and the end portions ensure perfect flanking of edges and coplanar arrangement of upper sides
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 solution facilitates the correct closure of profiled elements, reduces the need for roller adjustments, and ensures precise fillet radii, while preventing the profiled element from twisting, thus improving the overall profiling process.
Implementation Method 1
The operating unit comprises two shaped rollers (1), positioned with the end portions (3) thereof facing one another... The conical portion (2) is provided with a vertex section (23), in which the diameter is minimal. The end portion (3) has a greater diameter than the vertex section (23). In this way, the end portion (3) defines a shoulder from the surface of the first conical portion (2).
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A shaped roller for a profiling line, comprising a conical portion (2) and an end portion (3), concentric with respect to a rotating axis (Z), wherein the conical portion (2) is equipped with a vertex section (23), and wherein the end portion (3) has a greater diameter than the vertex section (23) that defines a shoulder from the surface of the first conical portion (2).