Transmission Outer Ring Connection Assembly With Elastic Bulges
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Solution Overview
Problem
Existing connection assemblies in robotics face challenges with the installation of transmission outer rings, requiring complex and heavy screw connections that are not suitable for radial forces, leading to instability and increased weight, while press-fitting is not feasible due to tolerance deviations.
Innovation Solution
A connection assembly featuring an annular space with elastically deformable bulges forming a force-fit connection between the transmission outer ring and the drive-side structure, distributing forces uniformly and compensating for heat-induced expansions, with a two-stage guide system and chamfered recesses for easy installation and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screw connections are used to connect the transmission outer ring to the drive-side structure, then the connection can accommodate radial forces, but the device complexity and weight increase
Solution Approach 1:
The invention extracts the fastening function from complex screw connections and implements it through simple retaining rings that engage with the drive-side structure through elastic deformation, eliminating the need for threaded fasteners while maintaining connection strength
Solution Approach 2:
The retaining ring utilizes elastic deformation parameter changes to create a force-fit connection, where the bulges deform elastically to engage with the drive-side structure, providing strong mechanical attachment without complex threading or fastening mechanisms
2Productivity
If press-fitting is used to install the transmission outer ring, then the installation is simple and rapid, but tolerance deviations cause instability
Solution Approach 1:
The retaining ring is pre-formed with bulges that are designed to elastically deform during installation, creating a self-centering force-fit connection that compensates for tolerance variations before final engagement, ensuring stable connection without precise tolerance control
Solution Approach 2:
The elastic deformation of the bulges allows the connection to adapt to tolerance deviations through parameter changes in the material state, transforming from a rigid press-fit requirement to a flexible elastic engagement that maintains stability across tolerance ranges
3Weight of stationary object
If a force-fit connection with elastic bulges is used, then the connection is lightweight and compact, but the installation precision requirements increase
Solution Approach 1:
The elastic material property allows the bulges to deform and adapt during installation, converting precision installation requirements into material property-based self-adjustment, where the elastic deformation compensates for positioning variations
Solution Approach 2:
The retaining ring performs self-alignment and self-centering through elastic deformation of the bulges during installation, eliminating the need for high-precision external alignment tools or procedures, as the material itself provides the positioning function
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 solution enables a lightweight, compact, and stable connection assembly that prevents mechanical overload, reduces error susceptibility and wear, and improves scalability and dynamics in robot arms by allowing a more economical and centered installation of transmission outer rings.
Implementation Method 1
The connection element (18) has elastic properties, has spaced, radially extending bulges (26) and forms a force-fit connection between the transmission outer ring (12) and the drive-side structure (14) when the bulges elastically deform
Implementation Method 2
The connection assembly further compensates to the greatest extent the arising different heat-induced material extensions of the transmission outer ring and the drive-side structure
Data Source
AI summary
A connection assembly between a drive-side structure and a transmission outer ring sealing a transmission arranged radially inside, wherein an annular chamber comprising a connection element arranged therein is configured between the transmission outer ring and the drive-side structure, and a peripheral guide is axially configured at least on one side of the annular chamber between the transmission outer ring and the drive-side structure, wherein the connection element comprises bulges which are spaced over the peripheral extension and are elastically deformable and forms a force-fit connection between the transmission outer ring and the drive-side structure when the bulges elastically deform.