Linear Guide Rail with Integrated Teeth for Cage Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing linear guide systems face challenges with weight, assembly complexity, and uncontrolled cage movement leading to potential slipping of rolling elements, which affects load stability and service life.
Innovation Solution
A linear guide system with a multi-part guide rail design, featuring a base body and raceway inserts made from different materials, where the raceway inserts are fastened via material connections or clamping, and include integrated teeth for precise forced guidance, reducing weight and assembly complexity while ensuring stable load absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the guide rail and guide body are made of roller bearing steel to ensure long service life, then the service life is improved, but the overall weight increases significantly
Solution Approach 1:
The guide rail is divided into two separate components: a base body made of lightweight material (aluminum, magnesium, or plastic) and a raceway insert made of roller bearing steel. The raceway insert is fixed in a groove of the base body, separating the structural support function from the rolling contact function. This segmentation allows the lightweight base body to bear the overall weight while the hardened steel raceway insert provides durable rolling surfaces for long service life.
Solution Approach 2:
The guide rail combines two different materials with complementary properties: a lightweight base material (such as aluminum alloy, magnesium alloy, or plastic) and a hard, wear-resistant raceway insert material (roller bearing steel). This composite construction achieves both weight reduction and long service life by assigning each material to its optimal function - the lightweight base provides low weight and the steel insert provides durability.
2Reliability
If a restricted guide with toothed wheel and racks is added to prevent uncontrolled cage movement, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The row of teeth for the restricted guide is integrated directly into the raceway insert as a monolithic structure, rather than being a separate component. The raceway insert combines both the rolling contact surfaces and the guidance teeth in one piece, which is then fixed into the base body. This merging eliminates the need for separate toothed rack components and simplifies assembly while maintaining reliable cage positioning.
3Stability of the object's composition
If the guide rail is designed as a solid one-piece structure, then the stability is improved, but the weight and manufacturing complexity increase
Solution Approach 1:
The guide rail is segmented into a base body and a raceway insert, allowing the base body to be made of lightweight material while maintaining overall structural stability through proper design of the base geometry and the fixation of the raceway insert in a groove. The segmentation enables weight reduction without sacrificing stability.
Solution Approach 2:
The guide rail uses composite construction with a lightweight base material (aluminum, magnesium, or plastic) and a hardened steel raceway insert. This composite structure achieves both weight reduction and stability - the lightweight base provides low weight while the steel insert provides local rigidity and wear resistance at the critical rolling contact points.
4Duration of action of stationary object
If the raceway insert is made of roller bearing steel for long service life, then the durability is improved, but the rolling resistance increases
Solution Approach 1:
The guide rail is segmented into a base body and a raceway insert, allowing the raceway insert to be made of hardened steel for durability while the base body remains lightweight. The segmentation enables the steel insert to be optimized for wear resistance without requiring the entire guide rail to be heavy steel.
Solution Approach 2:
The guide rail combines lightweight base material with hardened steel raceway insert material. This composite construction allows the steel insert to provide durable rolling surfaces with appropriate hardness for long service life, while the lightweight base material minimizes overall weight. The interface between the steel insert and lightweight base is designed to minimize additional friction.
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 compact, lightweight linear guide system with improved load absorption capabilities and simplified assembly, maintaining precise alignment and stability of rolling elements, thus preventing uncontrolled slipping and extending service life.
Implementation Method 1
each rolling body having at least one rolling body running surface formed on the guide rail and having at least one rolling body running surface formed on the guide body in contact
Implementation Method 2
The forced guidance of the respective cage comprises a gear wheel attached to the cage and at least two rows of teeth, one of the rows of teeth being stationary on the guide rail and another of the rows of teeth being stationary on the guide body in such a way that the gear wheel is meshed with both rows of teeth
Implementation Method 3
the respective raceway insert being fastened in a groove formed in the base body by means of a material connection and/or by clamping
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The system (1) has a multi-part guide rail (5) for guiding a guide body (3), which is supported by a rolling body (15) at the guide rail. The guide rail has a base body (6) and a track element (10), which is fixed in a groove by a positive-fit connection and/or by clamping, where the groove is formed in the base body. The rolling body is arranged in a cage (20), and the base body and track element are made of different materials. The track element is a single-piece body, and a teeth row (26.1) is formed in a portion of the single-piece body.