Digital Roll Gap Verification With Encoder-Based Calibration
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Solution Overview
Problem
The existing gap verification methods, such as the 'feeler gauge' approach, are inconsistent and prone to user error due to subjective perception of drag, and can cause misalignment and deformation issues, leading to inaccurate roll gap adjustments in steel-making leveling units.
Innovation Solution
A digital roll gap verification tool equipped with a scissor-type sensing assembly coupled to a rotary encoder and digital readout, allowing for precise measurement of the roll gap between top and bottom rollers, eliminating the need for subjective judgment and minimizing the risk of deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a feeler gauge method is used for roll gap verification, then the device complexity is low, but the measurement precision and reliability are poor due to subjective perception of drag
Solution Approach 1:
The patent replaces the manual mechanical feeler gauge method with a digital measurement system that uses a scissor-type sensing assembly coupled to a rotary encoder. This substitution eliminates subjective human perception of drag and provides objective digital readings of roll gap measurements, thereby improving measurement precision while accepting increased device complexity.
Solution Approach 2:
The patent introduces a scissor-type sensing assembly as an intermediary mechanism between the rollers and the measurement system. This sensing assembly translates the physical roll gap into rotational movement of the encoder, providing an accurate intermediate measurement that bridges the gap between the mechanical rollers and the digital readout display.
2Reliability
If manual feeler gauge verification is used, then the ease of operation is high, but the reliability is low due to user error and inconsistency
Solution Approach 1:
The patent implements a digital readout display that provides immediate visual feedback of the measured roll gap value. This feedback mechanism allows operators to see the exact measurement reading, eliminating the uncertainty and inconsistency of manual feeler gauge methods. The system continuously provides reliable measurement data, improving verification reliability while maintaining operational simplicity through the digital interface.
3Manufacturing precision
If feeler gauge method is used, then the device complexity is simple, but manufacturing precision is compromised due to deformation issues
Solution Approach 1:
The patent replaces the mechanical feeler gauge that can cause deformation with a digital sensing system using a scissor-type assembly and rotary encoder. This substitution eliminates the deformation problem by using non-contact or minimal-contact measurement, thereby improving manufacturing precision for roll gap adjustment while accepting the necessary increase in device complexity.
4Measurement precision
If digital verification tool with scissor-type sensing assembly is used, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent uses a scissor-type sensing assembly as an intermediary mechanism that converts the linear roll gap measurement into rotational movement of a rotary encoder. This intermediary approach enables precise digital measurement while maintaining a relatively compact and manageable device structure, balancing measurement precision with acceptable device complexity.
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 tool provides consistent and precise calibration of the roll gap, ensuring accurate adjustments and preventing misalignment, with the ability to detect increments as small as 0.001 inch, improving the reliability of the leveling unit's output.
Implementation Method 1
A digital roll gap verification tool equipped with a scissor-type sensing assembly coupled to a rotary encoder and digital readout
Data Source
AI summary
A gap verification tool is usable with a leveling unit where the leveling unit includes multiple offset rollers that flatten a material, such as a previously coiled steel sheet, as it passes through the leveling unit. The gap verification tool includes a sensing assembly that has blades that rotate about a pivot point of the tool. An encoder of the tool measures the rotation of the blades and determines a gap between the offset rollers. A calibration stand is also usable with the tool to calibrate the tool. The calibration stand includes offset rollers setup with a known gap.