Roll Stand Assembly With Integrated Bending Block and Rotation Lock
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Solution Overview
Problem
The existing roll stand designs require complex and costly machining, extended assembly time, and pose safety risks due to the attachment of rotation prevention means to the roll housing, leading to difficulties in installation, maintenance, and lubrication.
Innovation Solution
Integrating the rotation prevention means, axial displacement means, and bending block as a single unit with a screw connection, eliminating the need for separate attachments to the roll housing and reducing open lubrication points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rotation prevention means are attached to the roll housing using guide blocks with loop belts and attachment screws, then the displacement device can be rotationally stabilized, but expensive machining of the roll housing is required
Solution Approach 1:
The rotation prevention function is extracted from the roll housing and transferred to the bending block. The rotation prevention means are no longer attached to the roll housing but are integrated with the bending block, eliminating the need for machining the roll housing while maintaining rotational stability.
Solution Approach 2:
The bending block serves as an intermediary component that provides the rotation prevention function. Instead of directly attaching rotation prevention means to the roll housing, the bending block acts as a mediator that connects the displacement device and provides rotational stabilization through its integration with the rotation prevention means.
2Reliability
If rotation prevention means are separately attached to the displacement cylinder and roll housing, then rotational stability is achieved, but assembly time is extended and pre-assembly is impossible
Solution Approach 1:
The rotation prevention means and the bending block are merged into a single integrated unit. This combination allows the entire assembly to be pre-assembled and tested before installation, significantly reducing on-site assembly time while maintaining rotational stability.
Solution Approach 2:
The rotation prevention means are pre-integrated with the bending block during manufacturing, allowing pre-assembly and pre-testing of the complete assembly. This preliminary action eliminates the need for complex on-site assembly operations and reduces installation time.
3Reliability
If rotation prevention means are attached to the roll housing, then rotational stability is provided, but installation and removal of bending blocks becomes difficult
Solution Approach 1:
The rotation prevention function is extracted from the roll housing and relocated to the bending block. This extraction simplifies the installation and removal process of bending blocks, as the rotation prevention means move with the bending block rather than remaining fixed to the roll housing.
Solution Approach 2:
The system transitions from a static configuration where rotation prevention means are fixed to the roll housing to a dynamic configuration where the rotation prevention means are integrated with the bending block. This allows the bending block to be easily installed and removed while maintaining rotational stability during operation.
4Reliability
If separate attachments to roll housing are used for displacement device and rotation prevention means, then rotational stability is achieved, but multiple open lubrication points are created increasing maintenance complexity
Solution Approach 1:
The rotation prevention means and displacement device are merged into a single integrated assembly with the bending block. This merging reduces the number of separate attachment points and corresponding lubrication points, simplifying maintenance while maintaining rotational stability.
Solution Approach 2:
The bending block serves multiple functions: it provides bending torque application, integrates the rotation prevention means, and serves as the mounting structure for the displacement device. This multi-functionality eliminates the need for separate attachments and reduces the number of lubrication points required.
Data Source
AI summary
A roll stand for rolling a metallic product and having two work-rolls supported in the roll stand by respective work-roll chocks. An axial displacement arrangement is provided with which the work-rolls can be displaced in direction of their longitudinal axes, and at least one work-roll locking arrangement is provided with which the work-roll chocks can be locked and unlocked in the roll stand. A rotation prevention arrangement is provided with which the axial displacement arrangement can be prevented from rotation about longitudinal axes of the work-roll. A bending arrangement is provided which includes a bending block and with which a bending torque can be applied to the work-rolls. In order to achieve a simpler design of the assembly and improved lubrication possibilities for the component to be lubricated, the rotation prevention arrangement and the axial displacement arrangement are fixedly connected with the bending block.