Ring Rolling Mandrel Assembly With Integrated Vertical Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In radial-axial ring rolling mills, the mandrel lifting device protrudes excessively, risking damage during ring insertion or removal, and experiences bending stress due to uneven mandrel bearing adjustments, particularly for smaller rings.
Innovation Solution
The mandrel bearing head and rolling mandrel are vertically adjusted together using a second linear adjustment device, eliminating the need for a separate mandrel lifting device and preventing vertical offsets, allowing for secure attachment and easier mandrel replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mandrel lifting device is positioned high to enable mandrel removal, then the mandrel can be pulled out of the ring, but the mandrel lifting device protrudes excessively and risks damage during ring insertion or removal
Solution Approach 1:
The patent combines the mandrel lifting function with the mandrel bearing head by integrating a lifting device into the bearing head structure itself. This merging eliminates the need for a separate, protruding mandrel lifting device while maintaining the capability to remove the mandrel from the ring. The integrated design reduces the overall protrusion height and eliminates the damage risk associated with excessive protrusion.
2Strength
If the upper mandrel bearing is lowered relative to the mandrel bearing head to reduce bending stress, then the bending length of the rolling mandrel is reduced, but a vertical offset occurs between the upper mandrel bearing and the mandrel bearing head, leading to bending moments in the mandrel bearing head
Solution Approach 1:
The patent employs a vertically adjustable mandrel bearing head that can be dynamically repositioned along the vertical axis. This dynamic adjustment capability allows the system to optimize the position of the upper mandrel bearing relative to the mandrel bearing head based on the specific rolling conditions and ring dimensions. By making the bearing head position adjustable rather than fixed, the system can reduce bending stress on the mandrel while minimizing bending moments in the bearing head through proper positioning.
3Adaptability or versatility
If the mandrel bearing head is horizontally adjustable to enable radial deformation, then the rolling mandrel can be moved towards and away from the main roll, but the structure becomes more complex with additional adjustment mechanisms
Solution Approach 1:
The patent designs the mandrel bearing head as a multi-functional component that combines horizontal adjustment capability with vertical adjustment capability and mandrel support function. By making the bearing head itself adjustable in multiple directions rather than requiring separate adjustment mechanisms for each degree of freedom, the patent reduces overall structural complexity while maintaining full adaptability for radial and axial deformation operations.
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a radial-axial ring rolling mill for rolling a ring, comprising an axial rolling device (11) and a radial rolling device (12). The radial rolling device (12) comprises a main roll (14) and a roller mandrel (15) between which the ring can be reshaped. The roller mandrel (15) is held in its upper region on a mandrel bearing head (16) which is mounted in a horizontally adjustable manner in a first linear adjustment device (17) such that the roller mandrel (15) can be moved perpendicular to its longitudinal extension in the direction of the main roll (14) and opposite thereto. According to the invention, the first linear adjustment device (17), together with the mandrel bearing head (16) and the roller mandrel (15) as a unit, can be vertically adjusted by means of a second linear adjustment device (18) such that the roller mandrel (15) can be pulled out of the interior of the ring and can be inserted into same.