Three-Roller Stand Symmetry for Uniform Torque Absorption
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Solution Overview
Problem
Existing rolling stands for metal rods, wires, or pipes fail to provide uniform torque absorption and are not easily switchable between different orientations, limiting their modular use in rolling mills.
Innovation Solution
A stand with a hexagonal housing and star-shaped arrangement of rollers, featuring an adjustment connector that allows for flexible radial spacing adjustment and easy switching between Y- and anti-Y-arrangements, enabling modular use in various configurations and positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional stands with rectangular housing and side-mounted adjustment connector are used, then the structure is simple, but the stands cannot be easily switched between different orientations and do not provide uniform torque absorption
Solution Approach 1:
The stand housing is designed with three-fold rotational symmetry (triangular cross-section) rather than conventional rectangular symmetry. This asymmetric design with respect to traditional stands enables the stand to be oriented in different positions (0°, 120°, 240°) while maintaining functional equivalence, allowing easy switching between orientations and uniform torque absorption from different drive positions.
Solution Approach 2:
The adjustment connector is designed to be accessible from multiple sides of the stand housing due to the three-fold symmetry. This universal accessibility allows the same stand to be used in different orientations and positions within a rolling mill without requiring reconfiguration or additional components, enhancing versatility while maintaining structural simplicity.
2Adaptability or versatility
If the adjustment connector is positioned on one specific side of the stand, then the drive connection is simplified, but the stand cannot be easily replaced or repositioned in different orientations
Solution Approach 1:
The adjustment connector is positioned such that it remains accessible from the same relative position regardless of the stand's orientation in the rolling mill. The three-fold symmetric housing ensures that the connector is always accessible from one side while the stand can be rotated to different orientations, enabling both easy operation and modular replaceability.
Solution Approach 2:
The stand is designed so that all orientations (0°, 120°, 240°) are functionally equivalent with respect to adjustment connector accessibility. This equipotential design ensures that the stand can be replaced or repositioned in any orientation without compromising the ease of operation, as the adjustment connector remains equally accessible in all positions.
3Reliability
If multiple stands with different orientations are required to achieve uniform rolling, then the number of stands increases, but the rolling mill complexity and space requirements increase
Solution Approach 1:
The three-fold symmetric stand design allows a single stand to provide uniform torque absorption in multiple orientations (0°, 120°, 240°). This eliminates the need for multiple differently-oriented stands, reducing the total number of stands required in the rolling mill while maintaining reliable uniform rolling performance.
Solution Approach 2:
The stand is designed to perform the same uniform torque absorption function in all three orientations. This universal functionality allows a single stand design to replace what would traditionally require multiple specialized stands, improving rolling mill efficiency by reducing the number of stands and simplifying the overall system configuration.
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 stand achieves uniform torque absorption, flexible positioning, and simplified drive connections, reducing the number of required stands and enhancing the modularity and efficiency of rolling mills.
Implementation Method 1
an adjustment connector (30) which is arranged on the outside and is intended for introducing an adjustment torque for setting the caliber
Data Source
AI summary
The present application relates to a stand (1) for rolling metal rods, wires or pipes along a rolling axis (19), which stand comprises a stand housing (10), the outside (12) of which, viewed along the rolling axis (19), comprises at least six side surfaces (14.1-14.6) that are arranged so as to be offset about the rolling axis, about a 60° rotation in each case, wherein in each case two side surfaces (14.1, 14.4, 14.2, 14.5, 14.3, 14.6) form a pair of side surfaces (14.1-14.6) that are located in parallel with one another. It further comprises three rollers (20.1-20.3) which are positioned on one roller shaft in each case, surround the rolling axis (19) in a star-shaped manner, and together form a caliber (21), and the radial position of which, based on the rolling axis (19), can be set for setting the caliber (21), and an adjustment connector (30) that is arranged on the outside (12) and is intended for introducing an adjustment torque for setting the caliber (21). In this case, the adjustment connector (30) comprises a gear shaft which is in parallel with a pair of the mutually parallel side surfaces.