Measuring Roller Layout for Vibration-Resistant Strip Edge Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing measuring rollers for determining the flatness of metal strips suffer from measurement errors due to vibrations, which affect the accuracy of force measurements and lead to incorrect determination of strip edge positions.
Innovation Solution
A modified measuring roller design featuring a beam with a longitudinal axis oblique to the axis of rotation, supported by force sensors within recesses, allows for precise determination of the strip edge position by analyzing the progression of force over time as the strip passes over the roller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional force sensors are arranged in radial recesses of the measuring roller, then the measurement of flatness can be performed, but measurement errors occur due to vibrations affecting the force measurements
Solution Approach 1:
The patent applies asymmetry by positioning the force sensor not in a radially symmetric location but at an asymmetric angular position (e.g., 45 degrees) relative to the roller axis. This asymmetric positioning allows the sensor to measure force components that are less sensitive to vibrational disturbances, thereby improving measurement reliability while maintaining flatness measurement capability
Solution Approach 2:
The patent transitions from conventional radial force measurement to measuring force components in different dimensional orientations. By arranging the force sensor to measure axial or tangential force components rather than purely radial components, the system captures vibration-resistant measurement data that improves reliability under vibrational conditions
2Reliability
If the measuring roller body is made solid to reduce vibrations, then measurement reliability improves, but manufacturing complexity increases due to deep-hole drilling requirements
Solution Approach 1:
The patent segments the measuring roller into a solid roller body and separately manufactured components such as the force sensor assembly and protective covers. This segmentation allows the roller body to be manufactured as a simple solid structure while the sensor components are assembled separately, reducing manufacturing complexity despite the solid construction requirements
Solution Approach 2:
The patent introduces intermediary components such as protective covers and mounting structures that mediate between the solid roller body and the force sensor. These intermediaries simplify the integration process and reduce manufacturing difficulty by providing standardized interfaces and assembly procedures
3Measurement precision
If force sensors are positioned closer to the roller surface to improve measurement sensitivity, then flatness detection precision improves, but the sensors become more susceptible to vibrations and contamination
Solution Approach 1:
The patent employs thin protective covers or membrane structures that enclose the force sensor while allowing it to remain positioned close to the roller surface. These flexible or semi-rigid protective layers shield the sensor from vibration and contamination while maintaining its sensitivity to flatness variations
Solution Approach 2:
The patent introduces protective intermediary structures such as sealed housings or damping layers between the force sensor and the external environment. These intermediaries reduce the sensor's exposure to harmful factors like vibrations and contamination while preserving its measurement capability
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 design effectively reduces measurement errors caused by vibrations, enabling accurate determination of strip edge positions and, subsequently, strip width and flatness, even under conditions of strip vibration.
Implementation Method 1
a force sensor (303, 304) arranged in the recess (300) and the beam (301) is supported within the recess (300) on the force sensor (303, 304)
Data Source
AI summary
A measuring roller for determining a property of a strip-shaped material such as metal strip, passed over a measuring roller, having a measuring roller body with a circumferential surface, at least one recess in the measuring roller body, which is arranged at a distance from the circumferential surface or leads from the circumferential surface into the interior of the measuring roller body, and with a first force sensor arranged in the recess and a second force sensor arranged in the recess or in a further recess adjacent to the recess, wherein the first force sensor has a sensor surface and the first force sensor can generate a sensor signal when the position of the sensor surface of the first force sensor changes, and the second force sensor has a sensor surface and the second force sensor can generate a sensor signal when the position of the sensor surface of the second force sensor changes.