Adjustable Fastening Structure With Bendable Connecting Webs
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Solution Overview
Problem
Existing fastening devices require different distances and orientations of receiving recesses for various applications, but current progressive dies cannot efficiently produce such variations, leading to high production costs and limited component configurations.
Innovation Solution
A fastening device with material projections of varying thickness and curved connecting webs that can be bent to adjust the distance between receiving sections, allowing for flexible production of different configurations using the same manufacturing machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If progressive die tools are used to manufacture fastening devices with fixed receiving recess spacings, then manufacturing precision and efficiency are improved, but adaptability to different applications is worsened
Solution Approach 1:
The connecting webs are designed as flexible elements that can be bent to different degrees, transforming a static structure into a dynamic one. This allows the same base component to achieve multiple spacing configurations by varying the bend degree of the connecting webs, thereby resolving the contradiction between manufacturing precision (fixed die) and adaptability (variable spacing).
Solution Approach 2:
The invention changes the geometric parameter of the connecting webs by introducing variable bend degrees. This parameter change allows the distance between receiving sections to be adjusted without changing the base component design or requiring different progressive die tools, thus maintaining manufacturing precision while achieving adaptability.
2Adaptability or versatility
If progressive die tools are reconfigured to produce different receiving recess spacings, then adaptability to different applications is improved, but manufacturing cost and time are worsened
Solution Approach 1:
A single progressive die tool is designed to produce a universal base component that can serve multiple applications. The connecting webs' ability to be bent to different degrees allows one component design to fulfill multiple spacing requirements, eliminating the need for frequent die reconfiguration and reducing manufacturing costs.
Solution Approach 2:
The fastening device is segmented into distinct functional parts: the receiving sections with fixed geometry (produced by progressive die) and the connecting webs with variable geometry (bent post-production). This segmentation allows the expensive progressive die to produce only the critical high-precision parts while the adaptable connecting webs are configured separately.
3Manufacturing precision
If tube drawing process is used to produce material projections, then manufacturing precision is improved, but flexibility in adjusting receiving section distance is worsened
Solution Approach 1:
The connecting webs transition from a fixed state during tube drawing to a dynamic state after production. The bending operation transforms the rigid structure into an adjustable one, allowing distance flexibility to be introduced without compromising the precision of the tube-drawn receiving sections.
Solution Approach 2:
The high-precision receiving sections are produced first using tube drawing, and then the connecting webs are bent to the required configurations. This preliminary action sequence allows the precision-critical parts to be manufactured with high accuracy before any flexibility-modifying operations are performed.
Data Source
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AI summary
The invention relates to a fastening device (10) with at least two receiving sections (12a, 12b) which are spaced apart from each other and each have a material projection (14a, 14b) and a receiving recess (16a, 16b) enclosed by the wall of the material projection (14a, 14b) for receiving a fastening element, and a connecting structure (22) which connects the at least two receiving sections (12a, 12b) together.