Analysis of the relevant knowledge of linear guide rail design

In order to understand the linear guide, then we should first understand the design of linear guide, followed by the understanding of linear guide rail mobile components and fixed components.

The design of rail system, and strive to have the largest contact area between the fixing element and the moving element, which can not only improve the carrying capacity of the system, and the system can withstand the impact of intermittent cutting or cutting force to gravity, spreading widely, bearing area expansion.

In order to achieve this, a groove guide rail system are varied, is representative of the two, called a brother to type (Gothic), shaped like a half circle extending contact points as vertices; another is circular, can also play the same role. No matter what kind of structural form, the purpose is only one, and strive to more rolling ball radius and rail contact (fixed components).

The key factor determining the performance of the system is how the rolling element is in contact with the rail.

The middle part of the linear guide rail is not connected between the moving element and the fixing element. Because the rolling ball is suitable for high-speed movement, the friction coefficient is small, the sensitivity is high, and the working requirements of the moving parts are satisfied, such as the tool holder of the machine tool, the carriage, etc..

The basic function of the fixing element (guide rail) of the linear guide rail system is as the bearing ring, the bracket of the steel ball is installed, the shape is "V" shape. The bracket is wrapped with the top and two sides of the guide rail. In order to support the working parts of the machine tool, a set of linear guide rails has at least four supports. The number of supports can be more than four for supporting large working parts.

Linear guide rail can be divided into: roller linear guide and ball linear guide rail two, the former speed accuracy is slightly lower, the latter slow speed and high precision

What is the core of the rail design?

The design of rail system, and strive to have the largest contact area between the fixing element and the moving element, which can not only improve the carrying capacity of the system, and the system can withstand the impact of intermittent cutting or cutting force to gravity, spreading widely, bearing area expansion. The key factor determining the performance of the system is how the rolling element is in contact with the rail.