Work Roll Chock Load Detection for Rolling Direction Force
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Solution Overview
Problem
Existing rolling apparatuses face challenges in accurately detecting rolling direction forces due to tilting work roll chocks and wear-related issues, which affect the precision of camber and warp control in flat-rolled metal materials processing.
Innovation Solution
The rolling apparatus is designed with load detection devices positioned directly on the work roll chocks, ensuring they face housings or project blocks in a manner that counteracts rotation moments, maintaining consistent contact and preventing tilting, and are strategically placed to match the roll axis height and radial bearing center, allowing accurate force measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If load detection devices are provided on housings or project blocks facing work roll chocks, then rolling direction forces can be measured, but work roll chocks may tilt due to wear and dimensional changes, causing measurement errors
Solution Approach 1:
The patent introduces an intermediary calculation method that uses the relationship between rolling direction force and roll thrust force. Instead of directly measuring rolling direction force on housings, the system measures roll thrust force on work roll chocks and calculates rolling direction force through a predetermined relationship, eliminating the tilting problem caused by wear in direct measurement systems
Solution Approach 2:
The patent replaces the mechanical direct measurement system (load detection devices on housings) with a calculation-based system. By measuring roll thrust force and using the relationship F_roll_direction = k × F_roll_thrust, the system substitutes direct mechanical measurement of rolling direction force with an indirect calculation method that is immune to chock tilting
2Measurement precision
If load detection devices are positioned to face housings or project blocks, then rolling direction forces can be detected, but dimensional changes and wear affect the facing relationship, reducing measurement accuracy
Solution Approach 1:
The patent uses roll thrust force measurement as an intermediary that does not require precise facing alignment. By measuring force on the work roll chock bearing surface and using calculation to obtain rolling direction force, the system eliminates the complex positioning requirements of direct facing measurement devices
3Adaptability or versatility
If work roll chocks are allowed to tilt during operation, then wear and dimensional changes are accommodated, but rolling direction force measurement accuracy deteriorates
Solution Approach 1:
The patent measures roll thrust force on the work roll chock, which remains accurate even when the chock tilts, and uses calculation to derive rolling direction force. This intermediary measurement approach allows the system to accommodate chock tilting while maintaining measurement accuracy
Solution Approach 2:
The patent replaces the mechanical facing relationship requirement with a calculation-based system. By substituting direct rolling direction force measurement with roll thrust force measurement and mathematical calculation, the system becomes insensitive to chock tilting and wear
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 configuration enables precise detection of rolling direction forces, reducing errors and maintaining accuracy even with wear or changes in roll diameters, thereby improving the control of camber and warp in rolled materials.
Implementation Method 1
one or more load detection devices provided in one of the work roll chocks, the load detection devices detecting a load acting on one of the work roll chocks
Data Source
AI summary
[Object]To provide a rolling apparatus capable of accurately detecting a rolling direction force applied to a work roll chock.[Solution]A rolling apparatus for flat-rolled metal materials includes a pair of upper and lower work rolls 1 and 2, and a pair of upper and lower backup rolls 3 and 4. The rolling apparatus includes a pair of work roll chocks 5 and 6 configured to hold the respective work rolls, housings 10 configured to hold the work roll chocks, and load detection devices 21 to 24 provided in the work roll chocks, the load detection devices each detecting a load acting on one of the housings from one of the work roll chocks on an entry side in a rolling direction or on an exit side in the rolling direction. The load detection devices are each disposed so as to face one of the housings using a point of effort of a rolling direction force of one of the work rolls as a reference, such that a rotation moment generated on each of the work roll chocks caused by the rolling direction force is equal to a counter rotation moment generated by counterforce against the rotation moment.