Dual-Rotatable-Shaft Skew Rolling Mill for Stable Bed Centering
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Solution Overview
Problem
Existing skew rolling mills face issues with stiffness, compactness of structure, and complexity in adjustment, particularly in the frame type and clamp type, which affect their performance and usability in forming large and small-sized metal parts.
Innovation Solution
A skew rolling mill with a dual-rotatable-shaft structure, featuring synchronizing gears for centering and pressing down the beds, roller distance and tilt angle adjustments, and a guide plate for stabilizing the billet, allowing for synchronous rotation and easy adjustment of the rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a frame type structure is adopted to increase stiffness, then reliability is improved, but device complexity and mounting difficulty increase
Solution Approach 1:
The device is divided into modular components: a base with dual rotatable shafts, separate left and right beds that can be independently adjusted, and distinct rolling units. This segmentation allows each component to be optimized for stiffness while maintaining overall structural simplicity and ease of assembly.
2Weight of stationary object
If a clamp type structure is adopted to reduce device weight, then ease of manufacture is improved, but stiffness decreases and work noise increases
Solution Approach 1:
The patent employs a dual-rotatable-shaft support system where the shafts act as counterbalancing elements, distributing the load and reducing the overall weight requirement while maintaining structural stiffness. The symmetric arrangement of shafts provides structural reinforcement without significant weight penalty.
3Manufacturing precision
If synchronizing gears are added to center and press down beds, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The synchronizing function is merged with the existing bed rotation mechanism through gear integration. The synchronizing gears are incorporated into the bed assembly itself, allowing simultaneous centering and pressing down actions without requiring separate complex synchronization systems.
4Adaptability or versatility
If roller distance and tilt angle adjustments are added, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic adjustability through movable roller positions and variable tilt angles. The roller distance can be adjusted along the shaft, and the tilt angle can be varied, allowing the system to adapt to different workpiece requirements while maintaining a relatively simple mechanical structure through standardized adjustment mechanisms.
Data Source
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AI summary
The present invention relates to the technical field of metal plastic forming processes and equipment and provides a skew rolling mill with dual-rotatable-shafts, which comprises a base unit, a guide plate unit, a left bed rotatable shaft, a right bed rotatable shaft, a left bed, a right bed, a left synchronizing gear, a right synchronizing gear, a left roll system, a right roll system, a left roller, a right roller, tilt angle adjusting bolts and a roller distance adjusting unit. The guide plate unit is fixed on a base; the two bed rotatable shafts are symmetrically arranged about the axis of a billet; the left synchronizing gear and the right synchronizing gear are engaged, such that the two beds are synchronously centered and pressed down; the two rollers are coaxially fixed by the two roll systems respectively; the tilt angle adjusting bolts are used for adjusting the tilt angles of the two rollers; the roller distance adjusting unit is used for adjusting the opening of the two beds to change and adjust the roller spacing between the two rollers; and under the action of the friction force of the rollers/the billet, the billet is subjected to skew rolling forming between the two rollers. The skew rolling mill has the advantages that the beds are synchronously centered and pressed down, the vertical center line does not offset, the strength of the beds is high, the mounting and debugging are simple and the like such that the skew rolling mill can be applied to mass skew rolling forming of middle and small size parts.