Fiber-Reinforced Radial Press Structure for High-Pressure Stability
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Solution Overview
Problem
Radial presses face challenges in expanding their range of use due to limitations in force distribution, weight, volume, and stability, particularly when dealing with diverse workpiece geometries and high-pressure applications.
Innovation Solution
Incorporating an annularly closed fiber structure around the press axis, manufactured using a winding technique, which converts external forces into tensile stresses that can be efficiently managed and distributed, enhancing the radial press's strength and compactness while maintaining dimensional stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional rigid structures are used in radial presses, then strength and stability are improved, but weight and volume increase
Solution Approach 1:
The patent applies composite materials by combining a metallic core structure with a fiber-reinforced plastic shell. The core structure provides the necessary strength and stability, while the fiber-reinforced plastic shell adds structural integrity with reduced weight. This composite construction allows the press to maintain high strength-to-weight ratio, resolving the contradiction between structural strength and weight.
Solution Approach 2:
The patent implements local quality by strategically placing the fiber-reinforced plastic material in specific regions where tensile stresses occur during pressing operations. The fiber orientation is optimized to match the stress distribution patterns, providing enhanced strength only where needed rather than uniformly throughout the entire structure, thus reducing overall weight while maintaining necessary strength.
2Strength
If traditional rigid structures are used in radial presses, then strength and stability are improved, but device volume increases
Solution Approach 1:
The composite construction of metallic core with fiber-reinforced plastic shell enables a more efficient use of material, allowing the press to achieve the required strength with a more compact overall volume. The high specific strength of the composite materials permits reduction of structural dimensions while maintaining strength requirements.
Solution Approach 2:
The patent changes the material parameters by transitioning from traditional homogeneous metallic structures to composite structures with optimized fiber orientation and distribution. This parameter change allows for more efficient load bearing with reduced cross-sectional dimensions, thereby reducing the overall press volume.
3Weight of moving object
If fiber structure is used to reduce weight and volume, then weight and volume are reduced, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the press structure into distinct components: a metallic core structure and a separate fiber-reinforced plastic shell. This segmentation allows each component to be manufactured independently using optimized processes, then assembled together. The core structure can be produced by conventional metal forming, while the shell can be manufactured using composite layup techniques, simplifying the overall manufacturing process compared to attempting to create a fully integrated composite structure.
4Volume of moving object
If fiber structure with small radii is used, then compactness is improved, but stress concentration and crack propagation increase
Solution Approach 1:
The patent implements local quality by carefully controlling the fiber orientation and distribution in regions with small radii of curvature. The fiber layout is specifically designed to follow the contours of the core structure while maintaining adequate minimum radii. In high-stress regions, additional fiber layers or different fiber orientations are applied to prevent stress concentration and crack initiation, thus maintaining structural reliability in compact designs.
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
The fiber structure allows for the creation of powerful, compact radial presses that can handle various workpiece geometries and high-pressure applications without deformation, improving the press's overall performance and usability.
Implementation Method 1
the forces, torques and loads occurring outside the press jaws in radial presses of the type in question here can be converted even completely or at least almost completely into tensile stresses that act in a structure surrounding the press jaws or can be absorbed or compensated by such
Data Source
AI summary
A radial press is provided having a main structure, a plurality of pressing jaws arranged around a pressing axis, and having a drive unit which acts on the pressing jaws. The drive unit is supported on the main structure and can move the pressing jaws radially in the direction of the pressing axis and away from the same, at least one fibrous structure is provided radially outside the pressing jaws, the fibrous structure enclosing the pressing jaws and extending in annularly closed form around the pressing axis in a plane which is substantially perpendicular to the pressing axis.