Conical Rotary Feedthrough Contact for Saw Signal Reliability
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Solution Overview
Problem
Existing electrical rotary feedthroughs in sawing apparatuses face challenges in maintaining reliable signal transmission and power supply due to issues with axial abutment and relative movements, leading to inconsistent electrical contacts.
Innovation Solution
The design incorporates a tapering contact section with a clearance to ensure a line or surface contact between components, preventing purely axial abutment and maintaining contact reliability even with undesired movements, combined with a spring-loaded mechanism for enhanced contact stability and cleaning effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a purely axial abutment design is used for the rotary feedthrough components, then the structure is simple and easy to manufacture, but the electrical contact reliability deteriorates due to inconsistent contact under relative movements and tilting
Solution Approach 1:
The contact section is designed with a conical shape that extends in the radial direction rather than purely axially. This dimensional change from a flat axial contact to a conical surface contact creates a line or surface contact geometry that maintains electrical connection reliability even when relative movements or tilting occur between the first and second components.
2Adaptability or versatility
If axial relative movements and tilting occur between components, then the device can accommodate manufacturing tolerances and assembly variations, but the electrical contact quality deteriorates due to inconsistent contact pressure and alignment
Solution Approach 1:
The conical contact section transforms point or line contact into surface contact, distributing the contact pressure across a larger area. This dimensional change allows the contact to accommodate axial relative movements and tilting while maintaining consistent electrical connection quality.
Solution Approach 2:
The conical shape of the contact section introduces curvature to the contact surface, which naturally accommodates misalignment and tilting. The curved surface ensures that contact is maintained across a range of angular deviations, preventing loss of electrical connection.
3Reliability
If a larger contact surface area is used to improve contact reliability, then the electrical connection becomes more reliable, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The conical contact section achieves a naturally optimized contact surface area through its curved geometry. This curvature provides sufficient contact area for reliable electrical connection without requiring complex multi-component structures or additional adjustment mechanisms.
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
This configuration ensures consistently high-quality electrical contact and signal transmission, reducing noise and maintaining reliability during power supply or sensor signal transmission, even under conditions like tilting or vibrations.
Implementation Method 1
The first component comprises a contact section that tapers in the direction of the second component and along the central axis and the shell surface of said contact section forms a first contact surface. The second component comprises a receiving channel that extends along the central axis and the side surface of the receiving channel forms a second contact surface.
Implementation Method 2
The receiving channel and/or the tapering contact section comprises a clearance for ruling out a purely axial abutment of the first component against the second component.
Data Source
AI summary
A sawing apparatus can have a drive shaft that is rotatable about a central axis for rotationally driving a saw blade. The apparatus includes an electrical rotary feedthrough for the electrically conductive connection of the drive shaft to a connection assembly. The electrical rotary feedthrough includes a first component having a contact section that tapers in the direction of a second component and the shell surface of said contact section forms a first contact surface. The second component has a receiving channel that extends along the central axis and the side surface of the receiving channel forms a second contact surface. The first contact surface lies against the second contact surface in sections. The receiving channel and the tapering contact section has a clearance for ruling out a purely axial abutment of the components. In addition, an electrical rotary feedthrough for a sawing apparatus, is described.