Press-Fit Textile Machine Element for High Bending Loads
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Solution Overview
Problem
Existing textile machine elements, particularly those with thin profiles, face challenges in withstanding large bending and alternating loads, and known connecting elements often fail under such conditions, leading to loose connections.
Innovation Solution
A textile machine element composed of sections with male and female connecting elements, featuring press-fit areas and gaps, designed to withstand high loads through continuous contact zones and stress distribution, with opposing pressing forces and wedge elements for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If connecting elements are used to assemble large textile machine elements from smaller sections, then manufacturing precision is improved, but reliability deteriorates because the connecting elements cannot withstand large bending and alternating loads
Solution Approach 1:
The textile machine element is divided into multiple sections that are assembled using connecting elements. This segmentation allows for precise manufacturing of individual sections while maintaining the ability to assemble larger complex structures. The male and female connecting elements enable modular assembly with high manufacturing precision for each section.
Solution Approach 2:
The connecting elements are designed as composite structures combining male and female portions with specific geometric features. The male connecting element includes a head, shaft, and root with varying heights, while the female connecting element has corresponding legs with undercuts. This composite design creates multiple contact zones that distribute loads effectively, ensuring the assembly can withstand large bending and alternating loads while maintaining reliability.
2Reliability
If connecting elements are designed to withstand large bending and alternating loads, then reliability is improved, but device complexity increases
Solution Approach 1:
The connecting element is segmented into distinct functional portions: the male connecting element with head, shaft, and root, and the female connecting element with corresponding legs. This segmentation allows each portion to be optimized for its specific function while maintaining overall simplicity. The modular design enables reliable load-bearing performance without excessive complexity.
Solution Approach 2:
Different portions of the connecting elements have locally optimized geometries. The male connecting element has a head with greater height than the shaft, which has greater height than the root. The female connecting element has legs with corresponding varying heights and undercuts. This local quality variation allows the structure to withstand large bending and alternating loads efficiently without requiring complex overall design.
3Strength
If pressing forces are applied to create contact zones between connecting elements, then strength is improved, but manufacturing difficulty increases
Solution Approach 1:
The male and female connecting elements are designed with predetermined geometries that include the head, shaft, root, and corresponding legs with undercuts. These preliminary geometric configurations ensure that when pressing forces are applied, contact zones are automatically created at specific locations without requiring complex manufacturing processes. The design inherently guides the pressing operation to create the necessary contact areas for strength.
Solution Approach 2:
The connecting elements utilize parameter variations in their geometric dimensions, particularly the heights of the head, shaft, and root portions, as well as the leg dimensions and undercut positions. These parameter changes create natural contact zones when the elements are pressed together, providing strength while maintaining ease of manufacture through straightforward geometric variations rather than complex assembly procedures.
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 design enables the textile machine element to endure significant bending and alternating loads while maintaining precision and ease of manufacture, with improved resistance to deformation and increased service life.
Implementation Method 1
the outer contour of the male connecting element (4) is pressed into an inner contour of the female connecting element (5), viewed in a plane spanned by the longitudinal direction and a vertical direction perpendicular to the longitudinal direction
Implementation Method 2
at least one first wedge element (15) having at least one surface inclined towards the center of the male connecting element (4), and by the legs (9) of the female connecting element (5) each having at least one second wedge element (16) inclined away from the center of the female connecting element (5)
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The present invention relates to a textile machine element for use in textile machines and to a manufacturing method for producing the textile machine element. The textile machine element according to the invention comprises a first section (2) with a male connecting element (4) extending predominantly in a longitudinal direction (x), and a second section (3) with a female connecting element (5), wherein the male connecting element (4) is pressed into the female connecting element (5) to connect the first section (2) and the second section (3). In order to withstand particularly high bending and/or alternating loads while still being easy and precise to manufacture, the male connecting element (4) and the female connecting element (5) are in contact with each other in at least two spaced-apart pressing areas (6).