Tensioning Device Radial Force Absorption
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Solution Overview
Problem
Existing clamping devices for fastening hollow shafts or hubs to shafts do not effectively manage radial forces and often require complex assembly processes.
Innovation Solution
A clamping device featuring a ring element with axially extending threaded bores and a clamping element with passage openings for screws, which absorbs radial forces and simplifies assembly by providing a reliable fixation mechanism through congruent threaded bores and through-openings, allowing for even force distribution and cost-effective production using cast iron materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional clamping device without a ring element is used, then the assembly process is simpler, but the radial forces are not effectively absorbed and the fixation reliability is reduced
Solution Approach 1:
The ring element is pushed onto the hollow shaft or hub and radially surrounds it, creating a nested structure where the ring element encompasses the shaft section. This nesting allows the ring element to effectively absorb radial forces while maintaining a compact assembly that does not significantly increase overall complexity
Solution Approach 2:
The clamping device is divided into distinct functional segments: the ring element for radial force absorption, the clamping element for axial clamping, and the threaded connection mechanism for assembly. This segmentation allows each component to perform its specific function efficiently while simplifying the overall assembly process through modular construction
2Force
If the ring element is made wider axially to improve radial force absorption, then more radial forces can be absorbed, but the assembly complexity increases
Solution Approach 1:
The ring element is designed with an axial width that is sufficient to absorb the necessary radial forces for the application, but not excessively wide. The threaded bores are positioned to provide adequate force distribution without requiring the ring element to be overly dimensional, achieving the right balance between force absorption and assembly simplicity
Solution Approach 2:
The ring element has threaded bores positioned at specific locations to provide localized force absorption where most needed. This allows the ring element to be narrower axially while still effectively managing radial forces at critical points, rather than requiring uniform width throughout
3Reliability
If threaded bores are added to the ring element for reliable fixation, then the fixation reliability improves, but the manufacturing complexity increases
Solution Approach 1:
The ring element serves multiple functions: it radially surrounds and supports the hollow shaft or hub, absorbs radial forces, and provides threaded bores for secure connection to the clamping element. By combining these functions into a single component, the overall number of parts is reduced, offsetting the additional manufacturing steps required for the threaded bores
Solution Approach 2:
The ring element can be manufactured from cast iron or other suitable materials with appropriate mechanical properties. The threaded bores can be created through standard machining or casting processes, and the material selection allows for cost-effective production while maintaining the structural integrity needed for reliable fixation
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 device effectively absorbs radial forces and simplifies assembly by ensuring reliable fixation, enhancing the clamping mechanism's efficiency and cost-effectiveness while maintaining structural integrity.
Implementation Method 1
the outer cone of the clamping element from the outside and prevents them from expanding radially
Implementation Method 2
screwed to the ring element
Data Source
Figure 1~2
AI summary
To fasten a hollow shaft (1) or hub to a shaft (5), the hollow shaft or hub has an internal cone and an external thread (6) at one end. A ring element (2) with an internal thread is screwed onto the external thread and has several axially extending threaded bores (9) on one end face. A clamping element (3) with an external cone, which has several axially extending through-holes (10) for clamping screws (4) on an end-face flange, is arranged radially between the shaft and the internal cone of the hollow shaft or hub with a section encompassing the external cone and is screwed to the ring element.