Cross-Rolling Mill Rocker Pin Adjustment for Precise Roll Positioning
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Solution Overview
Problem
Existing cross-rolling mills face challenges in adjusting roll shafts without decoupling transverse forces, which requires intermediate elements increasing the installation height and leading to higher friction and reduced positioning accuracy.
Innovation Solution
The cross-rolling mill design incorporates pivotable rocker pins and a displaceable roll housing with hydraulic tension elements, allowing low-friction adjustment of roll shafts about multiple axes, reducing friction and transverse forces, and enabling precise positioning with reduced construction height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If intermediate elements are used to decouple transverse forces during roll shaft adjustment, then the adjustment can be performed, but the installation height increases and friction increases
Solution Approach 1:
The invention extracts and eliminates the intermediate elements (such as decoupling mechanisms) from the adjustment system. By directly connecting the roll shaft to the adjustment mechanism through rocker pins, the patent removes the unnecessary components that previously increased installation height, while maintaining the ability to decouple transverse forces through the inherent geometry of the rocker pin mechanism.
Solution Approach 2:
The rocker pin serves as a new intermediary element that performs multiple functions: it enables adjustment movement, inherently decouples transverse forces through its pivotable connection, and reduces friction compared to previous intermediate elements. This single mediator replaces multiple separate components, reducing overall height while maintaining functionality.
2Ease of operation
If intermediate elements are used to decouple transverse forces during roll shaft adjustment, then the adjustment can be performed, but friction increases and positioning accuracy decreases
Solution Approach 1:
By removing traditional intermediate decoupling elements that introduced friction and play, the patent achieves more precise positioning. The direct rocker pin connection eliminates the cumulative friction effects of multiple intermediate components, resulting in better positioning accuracy.
Solution Approach 2:
The rocker pin utilizes spherical pivot connections that allow smooth rotational movement with minimal friction. The spherical geometry enables multi-directional adjustment while maintaining low friction contact, improving positioning accuracy compared to linear or hinged intermediate elements.
3Stability of the object's composition
If traditional adjustment mechanisms are used for roll shafts, then the structure is stable, but the construction height and frame size increase
Solution Approach 1:
The invention merges the adjustment mechanism and the decoupling function into a single integrated rocker pin assembly. This consolidation eliminates the need for separate intermediate elements that would increase height, while maintaining structural stability through the rigid connection of the rocker pin to both the roll shaft and the frame.
Solution Approach 2:
The adjustment mechanism is reconfigured to operate in a compact spatial arrangement using the rocker pin's pivotable connection. By utilizing rotational movement in a different dimensional orientation, the patent achieves the same adjustment functionality with reduced vertical height, allowing for a more compact frame structure.
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 solution reduces friction and transverse forces, improves positioning accuracy, enhances system rigidity, and minimizes vibration, while allowing for adjustable roll shafts to compensate for radial and angular deviations, thus lowering the overall size and weight of the mill.
Implementation Method 1
a hydraulic tension element applies, to the roll housing, a force in a direction opposite the direction of the rolling force
Implementation Method 2
The pivotability of the rocker pin provides for a simple and low-friction position adjustment between the roll shaft and the control element which can take place in different directions
Data Source
AI summary
The invention relates to a cross-rolling mill, having a plurality of roll shafts (1), each applying a radially directed rolling force to a workpiece, wherein orientation of a roll axis (w) of at least one of the roll shafts (1) adjustably changes about a first adjustment axis (S1) and a second adjustment axis (S2), wherein an intermediate member (9, 10) is arranged between a rotary baring (4, 5) and a control element (11, 12), and wherein the intermediate member (9, 10) includes a rolling force-transmitting rocker pin (14, 15) having a spherical surface (14a, 14b, 15a, 15b) that provides for pivotal movement in a plurality of directions.