Cross-Rolling Roll Pass Adjustment During Rolling
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Solution Overview
Problem
Existing cross-rolling units lack the ability to dynamically adjust the rolling caliber during the rolling process, which limits their ability to adapt to changing parameters and achieve optimal rolling results.
Innovation Solution
A cross-rolling unit with at least two rollers and a roller stand, where one roller is mounted for adjustable position change, utilizing a roll positioning device with a hydraulic cylinder capable of applying high pressures and quick adjustments, and a mandrel position adjustment device to change the rolling caliber and mandrel position relative to the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the roll positioning device uses a hydraulic cylinder capable of applying high pressures and quick adjustments, then the rolling caliber can be dynamically adjusted during rolling to adapt to changing parameters, but the device complexity increases
Solution Approach 1:
The patent employs a hydraulic cylinder as the core actuator in the roll positioning device. The hydraulic system enables high-pressure operation (>50,000 hPa) and rapid adjustment speeds (>30 mm/s), providing the necessary force and speed for dynamic roll caliber adjustment during the rolling process. This hydraulic actuation mechanism directly resolves the contradiction by delivering superior adaptability while managing device complexity through efficient fluid power transmission.
Solution Approach 2:
The invention implements dynamic adjustability of the roll caliber during the rolling process, transforming a static rolling mill into a dynamically adaptable system. The roll positioning device allows continuous modification of the rolling pass dimensions in response to changing workpiece geometry and rolling parameters, enabling real-time optimization of the rolling process without requiring complete system redesign.
2Productivity
If the hydraulic cylinder is moved at speeds of over 30 mm/s with pressures over 50,000 hPa, then the rolling forces can be applied effectively and the roll caliber changed quickly, but the reliability and control precision requirements increase
Solution Approach 1:
The patent incorporates a control system that receives signals from sensors monitoring the rolling process parameters. This feedback mechanism enables real-time adjustment of the hydraulic cylinder operation, ensuring precise control of roll caliber changes despite the high speeds and pressures involved. The closed-loop control compensates for variations and maintains reliability while achieving rapid adjustment capabilities.
Solution Approach 2:
The invention utilizes significant parameter changes in the hydraulic system, operating at pressures exceeding 50,000 hPa and speeds over 30 mm/s. These extreme parameters enable rapid and effective application of rolling forces during the rolling process. The system is designed to harness these high-energy states to achieve quick roll caliber changes while maintaining control through appropriate hydraulic valve selection and system design.
3Manufacturing precision
If both roller mills are mounted to be adjustable via roller mill adjustment devices, then the roller caliber can be adjusted more precisely, but the device complexity and cost increase
Solution Approach 1:
The patent divides the roll caliber adjustment function into two independent roller mill adjustment devices, one for each roller mill. This segmentation allows each device to be optimized for its specific function and enables independent adjustment of each roller mill's position. The modular approach improves precision by allowing fine-tuned control of each roller mill while managing overall system complexity through functional decomposition.
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
Enables precise and dynamic adjustment of the rolling caliber during rolling, allowing for optimal adaptation to changing workpiece geometry and rolling parameters, improving the rolling process by applying rolling forces effectively and efficiently.
Implementation Method 1
the roll positioning device comprises at least one hydraulic cylinder and the position of which can be changed during rolling, wherein the roll positioning device has at least one movable cylinder which can be moved with more than 50...000 hPa
Data Source
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AI summary
A cross-rolling unit and a method for setting the roll pass of a cross-rolling unit, having at least two rolls and a roll housing, in which at least one of the rolls is mounted such that its position can be adjusted in order to change the roll pass, allow the roll pass to be adjusted by means of a roll-positioning apparatus even during rolling, which roll-positioning apparatus is characterized by a housing-connected part and a roller-mill-connected part, which can be moved relative to the housing-connected part during rolling, which parts can be repositioned relative to each other, and/or which roll-positioning apparatus is characterized by a drive which is dimensioned in such a way that rolling forces can be applied.