Stationary Fixed Roll for In-Situ Rolling Interface Observation
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Solution Overview
Problem
Conventional rolling state observation techniques face challenges in performing in-situ observation due to high speeds of rolls and workpieces, making it difficult to measure lubricant film thickness and surface pressure during rolling processes.
Innovation Solution
A rolling state observation apparatus with a stationary fixed roll and a rotating moving roll, equipped with observation devices such as imaging devices, pressure sensors, and strain gauges, allowing for direct observation of the rolling interface without rotating during the rolling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional rolling observation methods are used with rotating rolls at high speed, then the rolling process can proceed at high productivity, but in-situ observation of the rolling interface becomes extremely difficult
Solution Approach 1:
The patent inverts the conventional rolling configuration by making one roll stationary (fixed roll) and the other roll rotate while revolving around the fixed roll. This inversion allows the observation device to be installed on the stationary fixed roll, eliminating the need for high-speed rotation during observation while maintaining the rolling function through the revolving motion of the moving roll.
Solution Approach 2:
The rolling function is segmented between two distinct rolls with different functions: the fixed roll serves as the stationary observation platform, while the moving roll performs the rotating and revolving motion to achieve rolling. This segmentation allows the observation system to remain stationary while the rolling action is performed by the moving roll.
2Measurement precision
If observation devices are installed on rotating rolls to enable in-situ observation, then direct observation of the rolling interface is possible, but the device complexity and measurement accuracy deteriorate due to high-speed rotation
Solution Approach 1:
Instead of installing observation devices on the rotating roll, the patent installs them on the stationary fixed roll. This inversion transfers the observation function to a non-moving platform, eliminating the complexity of providing for high-speed rotation, vibration, and positioning of delicate measurement devices.
Solution Approach 2:
The stationary fixed roll acts as an intermediary platform that mediates between the moving roll and the observation device. It provides a stable base for mounting sensors and cameras, allowing indirect observation of the rolling interface through the fixed roll's observation window without exposing the devices to the harsh rotating environment.
3Productivity
If lubricants are used to reduce rolling load and torque, then the rolling efficiency improves, but the ability to observe lubrication state and measure surface pressure deteriorates due to high-speed conditions
Solution Approach 1:
The patent inverts the measurement setup by placing pressure sensors and observation devices on the stationary fixed roll rather than on the moving roll. This allows accurate measurement of surface pressure and lubrication state while the rolling process continues, as the sensors remain stationary and are not subjected to high-speed vibration and motion.
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 easy in-situ observation of the rolling state, optimizing rolling conditions and lubrication, and improving the accuracy of rolled materials by providing real-time data on surface pressure and deformation.
Implementation Method 1
a device for observing the rolling state is provided at the fixed roll
Implementation Method 2
configured to rotate the moving roll by the revolution of the moving roll
Implementation Method 3
the stress transmission state at the rolling interface between the workpiece and the roll is observed by measuring the deformation of the roll that occurs during the rolling
Implementation Method 4
the lubricant is usually in liquid state, and by being drawn into the roll bite due to its viscosity and existing as a film under high pressure on the interface between the roll and the workpiece, the frictional shear force acting on the rolling interface between the roll and the workpiece can be reduced
Data Source
AI summary
Provided are a rolling observation technique whereby the state of rolling on a rolling interface between a material to be processed and a roll can be observed easily and on site; a rolling state observation apparatus for observing the state of rolling at the rolling interface between a material to be processed and a roll during rolling of the material to be processed using two rolls, wherein the two rolls are constituted from a stationary fixed roll and a moving roll that rotates on its own axis while revolving around the fixed roll, and a device for observing the rolling state is provided to the fixed roll; and a rolling state observation apparatus comprising a revolution means for causing the moving roll to revolve around the fixed roll with the center axis of the fixed roll as the rotation center, and a rotation means for causing the moving roll to rotate on its own axis, the rolling state observation apparatus being configured so that the moving roll rotates on its own axis due to the revolution of the moving roll caused by the revolution means.