Vertical Roller Calibration Using Reference Stops and Sensors
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Solution Overview
Problem
Existing methods for calibrating vertical rolls in rolling trains require manual intervention in hazardous areas, are time-consuming, and cannot be automated.
Innovation Solution
An automated method and arrangement for calibrating vertical rolls using adjustable vertical roll units, reference surfaces, and hydraulic systems to determine and adjust the position of the rolls relative to the rolling train center line, eliminating the need for manual measurements in hazardous zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measuring devices (tape measures, laser range finders) are used for calibration, then measurement can be performed, but personnel must be present in hazardous machine areas
Solution Approach 1:
The patent introduces an intermediary measurement system consisting of reference surfaces mounted on the rolling train components and a stationary reference surface on the vertical rolling stand. These reference surfaces serve as mediators that enable indirect measurement of the vertical rolls' position relative to the center line without requiring personnel to enter hazardous areas. The measurement is performed by detecting the position of these reference surfaces using external sensors.
2Measurement precision
If manual calibration methods are used, then calibration can be performed, but the process is time-consuming and cannot be automated
Solution Approach 1:
The calibration system is designed to be self-servicing through automated detection of the reference surfaces' positions. The control system automatically processes the measured positions to calculate the vertical rolls' position relative to the center line and generates correction signals without requiring manual intervention. This automation enables rapid calibration execution and significantly reduces downtime, thereby improving plant availability.
Solution Approach 2:
The patent replaces manual mechanical measurement operations with an automated optical/electronic detection system. Instead of personnel physically measuring distances with tape measures or laser range finders, the system uses position sensors to detect the reference surfaces and a control system to automatically process the data and determine calibration parameters. This substitution eliminates manual labor and enables automation of the calibration process.
3Extent of automation
If reference surfaces are introduced for automated measurement, then automation is enabled, but device complexity increases
Solution Approach 1:
The calibration system is segmented into distinct functional components: reference surfaces mounted on movable rolling train components, a stationary reference surface on the vertical rolling stand, position sensors for detection, and a control system for processing. This segmentation allows each component to perform its specific function independently, simplifying the overall system design and making the complex automation task manageable through modular architecture.
Data Source
AI summary
A method for the automatic calibration of vertical rolls of a vertical rolling stand, each of which is supported in a vertical roll unit which is adjustable with respect to a predetermined center line of a plurality of components arranged in a rolling train, including the steps of a) moving the vertical roll units into a calibration position transverse to the center line against at least one stationary stop of the vertical rolling stand, which has a certain known position with respect to the center line, b) calculating a calibrated initial distance Akal between an outer edge of a vertical roll facing a rolled stock or the center line and the center line in the calibration position, and c) adjusting the vertical roll units to a defined operating position.