Radial Press Hexagonal Jaw Heads for Uniform Compression

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Solution Overview

Problem

Radial presses with fewer than eight base jaws result in non-uniform material compression and quality issues, while those with more than eight base jaws face equipment constraints and reduced rigidity, limiting their application and economic efficiency.

Innovation Solution

Equipping a conventional radial press with four or more special press jaw heads that form a hexagonal prism cavity when closed, allowing for hexagonal pressing and expanding the range of applications, thereby improving economic efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the number of base jaws is increased to more than eight, then the uniformity of material compression is improved, but the equipment complexity and cost increase excessively

Engineering Contradiction:
Improveuniformity of material compressionVSAvoidnumber of base jaws
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The pressing jaw head is divided into multiple independent pressing surfaces (at least four, preferably six or eight) that can be independently attached to the base jaws. Each pressing surface can be selectively positioned to provide uniform material compression while maintaining the simple eight-base-jaw structure. This segmentation allows the system to achieve the compression uniformity of a higher-numbered jaw system without the complexity increase.

Inventive Principle:
Principle #1Segmentation

2Manufacturing precision

If the number of base jaws is increased to more than eight, then the compression uniformity is improved, but the rigidity of individual base jaws decreases due to reduced width

Engineering Contradiction:
Improvecompression uniformityVSAvoidrigidity of base jaws
Core Design Contradiction:
Manufacturing precisionVSStrength

Solution Approach 1:

Instead of increasing the number of base jaws, the pressing function is segmented across multiple pressing surfaces attached to the existing eight base jaws. This maintains the width and rigidity of each base jaw while achieving uniform compression through the distributed pressing surfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The pressing jaw head is designed as a multi-functional component with at least four pressing surfaces that can be positioned to perform the compression function of multiple base jaws. This universal pressing surface can adapt to provide uniform compression without requiring additional base jaws, thus preserving the structural rigidity of the original eight-base-jaw design.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If special press jaw heads are introduced to enable hexagonal pressing, then the adaptability of the radial press is improved, but the device complexity increases

Engineering Contradiction:
Improverange of applicationsVSAvoidpress jaw head configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The pressing jaw head is designed as a universal component with at least four pressing surfaces that can produce both traditional circular-cylindrical pressings and new hexagonal pressings. By selectively positioning and configuring these pressing surfaces, the same jaw head structure serves multiple functions, expanding application range without requiring different jaw head designs for different workpiece geometries.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The pressing surfaces are arranged to be movable or adjustable relative to each other, allowing the pressing jaw head to dynamically adapt its configuration. This enables the same hardware to produce different pressing geometries (circular or hexagonal) by changing the active pressing surfaces, thereby expanding versatility without permanent structural modifications.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3265302B1Radial press
Publication Date: 2019.08.07 UNIFLEX HYDRAULIC
  • EP3265302B1 patent drawingFigure 1
  • EP3265302B1 patent drawingFigure 2~3
  • EP3265302B1 patent drawingFigure 4

AI summary

The invention relates to a radial press having a base structure, a pressing tool received therein, and a drive unit, wherein the pressing tool comprises eight base jaws (1) arranged around one pressing axis (6), which are movable in synch by means of the drive unit radially on the pressing axis (6), toward or away therefrom, in order to close or open the pressing tool, and to each of which one pressing jaw head (2) having a pressing surface (9) can be interchangeably attached. According to the invention, at least four pressing jaw heads (2) are attached to the eight base jaws (1) and, when the pressing tool is closed to the maximum extent, form a hollow chamber (7), delimited around the pressing axis (6) by six even shaping surfaces (8), in the form of a uniform hexagonal prism.