Linear guides are key components for mechanical transmission and carrying the worktable, and the installation accuracy of high-precision linear rail installation is of utmost importance. In general, high-performance guide rails are installed in pairs on the equipment, and one of them is installed first as the reference guide rail. On the installation base of the equipment, there are variable installation components serving as the installation surface of the reference guideway, and its accuracy is higher than that of the non-reference installation surface. The non-reference surface only needs to be finely planed, while the reference surface needs to be finely ground based on fine planning to ensure that its accuracy meets the installation requirements of the reference guide rail.
In terms of the installation method, precise linear motion guides can be installed horizontally or vertically. The horizontal installation of linear guide rails has better load-bearing capacity. Compared to sliding guide rails, it can withstand loads in the up-down and left-right directions simultaneously due to its unique restraint structure design, which can greatly improve the accuracy during running.
For different guide rails, the installation accuracy requirements vary. Taking the ball guide rail as an example, the installation accuracy of the ball guide rail requires the minimum parallelism of the installation surface to reach 0.01mm/m; if it is a roller guide rail, a floating slider can be selected. The roller guide rail with floating slider has a parallelism requirement of 3mm/m. The parallelism of the linear guide rails has a significant impact on the distance between the two guide rails. Usually, it is necessary to use a micrometer and a dial indicator for confirmation. The parallelism control of Linear Guideways generally requires the accuracy to be controlled within the range of 0.02mm, but the specific value will vary according to the actual usage requirements.
What affects the accuracy of two vertical linear guides?
1. Flatness Accuracy: usually, the larger the surface area of the linear guide installation surface, the more difficult it is to ensure the flatness accuracy, which depends not only on the accuracy requirements but also on the processing level of the equipment.
2. Parallelism: it has an important impact on the distance between the guide rails and must be strictly controlled.
