Segmented Pressing Ring for Uniform Radial Jaw Movement
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Solution Overview
Problem
Existing pressing tools face challenges in achieving uniform radial pressing of workpieces like pipes and fittings due to uneven distribution of pressing forces, leading to difficulties in maintaining consistent distances between pressing jaws and resulting in suboptimal deformation.
Innovation Solution
A pressing tool design featuring a ring made of ring segments with coupling points for tensile force introduction, utilizing partial rings to directly transmit force to movable press jaws, allowing for a more uniform radial inward movement and reduced frictional forces by deviating from a continuous chain of ring segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous chain of ring segments is used to transmit force around all pressing jaws, then the pressing tool can maintain a closed loop structure, but the frictional forces increase and the uniformity of radial pressing decreases
Solution Approach 1:
The continuous ring is divided into separate partial rings (first partial ring and second partial ring) that are coupled at specific coupling points. This segmentation allows the tensile force to be transmitted more efficiently to the pressing jaws without the cumulative friction that would occur in a continuous chain, thereby improving the uniformity of radial pressing while maintaining structural integrity through the coupled partial rings.
2Device complexity
If a continuous chain of ring segments is used to transmit force, then the structure remains simple and continuous, but the required pressing forces increase due to accumulated friction
Solution Approach 1:
By dividing the ring into separate partial rings coupled at specific points, the path for tensile force transmission is optimized. The force is transmitted directly from the coupling points through the partial rings to the pressing jaws, bypassing the cumulative friction that would occur in a continuous chain. This reduces the required pressing forces while introducing only minimal structural complexity through the coupling mechanism.
3Stability of the object's composition
If tensile force is transmitted through a continuous loop, then force distribution is maintained, but the distances between pressing jaws become inconsistent
Solution Approach 1:
The ring is segmented into partial rings with specific coupling points that allow independent adjustment and positioning. This segmentation enables more precise control over the positioning of pressing jaws, ensuring consistent distances between them while still maintaining effective force distribution through the coupled partial rings.
Solution Approach 2:
The coupling points act as intermediaries between the partial rings, allowing for precise force transmission and positioning control. These coupling points enable the system to maintain both force distribution stability and jaw distance consistency by serving as controlled connection points that can accommodate positioning requirements.
Data Source
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AI summary
The invention relates to a pressing tool (100) for the radial pressing of workpieces, comprising a ring of ring segments (121, 122, 121', 122') with two coupling points (K, K') for introducing a tensile force which brings about the closing of the ring. In a preferred embodiment, the ring consists of two partial rings (120, 120') from tensile force-transmitting coupled ring segments, wherein an end of each partial ring is coupled in a tensile force-transmitting manner to a press jaw (112, 112') which is movably supported on a ring segment (122', 122).