Axle Compensation Module With Linear Bearing Groups for High Moment Loads
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Solution Overview
Problem
Existing axle compensation elements are prone to damage under high operating loads due to insufficient resistance to bending and torsional moments.
Innovation Solution
The axle compensation module features a linear guide system with at least three bearing groups, each with two linear roller bearing units, and a spring element that compresses a pressure chamber, allowing for increased resistance to retraction strokes and high loads, while a media filling system provides additional rigidity during dynamic movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a one-piece axle compensation element is used, then the structure is simple, but it is prone to damage under high operating loads
Solution Approach 1:
The axle compensation element is divided into multiple modular components including a housing, cover group, base group, and bearing groups. This segmentation allows each component to be optimized for its specific function while distributing mechanical loads across multiple elements, thereby improving overall reliability without significantly increasing structural complexity.
2Strength
If the axle compensation module is designed for high moment loads, then it can withstand high loads, but the device complexity increases
Solution Approach 1:
The linear guide system with multiple bearing groups enables dynamic load distribution along the longitudinal direction. The system can adapt to varying moment loads by distributing forces across multiple bearing points, providing high strength capability while maintaining a manageable device complexity through systematic arrangement of components.
3Ease of operation
If the spring element pushes the cover group and base group apart, then the module is in extended position when unloaded, but the resistance to retraction stroke increases with increasing retraction stroke
Solution Approach 1:
The spring element is pre-loaded to provide a cushioning force that resists compression of the pressure chamber. This beforehand cushioning ensures that the module naturally extends when unloaded while providing progressive resistance to retraction strokes, protecting the system from excessive compression forces before they occur.
4Stability of the object's composition
If media pressure is applied during dynamic movement, then the rigidity of the axis increases, but additional complexity is introduced
Solution Approach 1:
A media filling system with a pressure chamber is integrated into the axle compensation module. During dynamic movements, media pressure can be applied to the pressure chamber to significantly increase the rigidity of the axis. This pneumatic/hydraulic approach provides variable stiffness control without requiring substantial structural modifications, balancing the added complexity with significant performance benefits.
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 module withstands high loads and maintains stability by limiting deformation, preventing damage and enhancing rigidity, especially during dynamic movements, thus ensuring the integrity of the robot axes.
Implementation Method 1
a spring element (121) which pushes the cover group (21) and the base group (71) apart
Implementation Method 2
The rolling elements roll on both the base assembly and the cover assembly
Implementation Method 3
The linear rolling bearing units each have several cage-guided needles or rollers as rolling elements
Implementation Method 4
During dynamic movement of the robot axes, high media pressure can be applied. This increases the rigidity of the individual axis
Implementation Method 5
the cover assembly and the base assembly are guided relative to each other in a longitudinal direction by means of a linear guide system
Data Source
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AI summary
The invention relates to an axle compensation module as an intermediate flange assembly of a linear axis, comprising a housing with a cover assembly and a base assembly loaded relative to it by means of a spring element. The cover assembly and the base assembly are guided relative to each other in a longitudinal direction by means of a linear guide system. Furthermore, the linear guide system has at least three bearing groups, each with two linear rolling bearing units. The present invention provides an axle compensation element for high moment loads.