Linear guide related introduction

1. materials for linear guides

1. Many materials of linear guide use chromium bearing steel, such as GCr15. Carburized bearing steels, such as G20CrMo, can also be considered. In the structural design, attention should be paid to the quenching process requirements, otherwise cracking and deformation will occur.

2. It can be divided into three types: roller linear guide, cylindrical linear guide, and ball linear guide, which are used to support and guide the moving parts to move to a compound straight line in a given direction. According to the nature of the conflict, the linear motion guide rail can be divided into sliding conflict guide rail, rolling conflict guide rail, elastic conflict guide rail, fluid conflict guide rail and so on.

Classification of 2. linear guide

Linear guide rail pair is generally composed of guide rail, slider, commutator, rolling body and cage. It is 1 a new type of rolling support that moves relative to a compound straight line. The steel ball between the slider and the guide rail can be used to roll instead of direct sliding contact. The rolling body can complete an infinite cycle in the raceway and the slider through the reverser. Simple structure.

2. The dynamic and static conflict coefficient is small, the positioning accuracy is high, and the accuracy is good. Linear guide rail, also known as fine rolling linear guide rail pair, slide rail, linear guide rail, linear slide rail, rolling guide rail, used for the need to control the workbench walking parallel linear reciprocating motion occasions, than linear bearings have a higher rated load, can bear a certain torque, high-precision linear motion under high load can be completed.

Its function is to support and guide the moving parts, through the two or 4 rows of rolling ball on both sides of the guide rail, driving the worktable to move smoothly along a given direction, to the complex linear motion. According to the nature of the conflict, the linear motion guide rail can be divided into sliding conflict guide rail, rolling conflict guide rail, elastic conflict guide rail, fluid conflict guide rail and so on.

3. the accuracy of linear guide

1. Its precision grade is divided into (walking parallelism, taking the guide rail length of 100mm as an example), general grade (unmarked/C)5m, (H)3m, precision grade (P)2m, precision grade (SP)1.5m and precision grade (UP)1m according to different machines used. Preload the slider. Generally speaking, preloading is divided into medium preloading and heavy preloading without preloading. The greater the preload, the better the stiffness. Load: Generally, at the beginning of selection, 1/3 of the rated dynamic load is determined as the upper limit of the actual load. Therefore, it is generally guaranteed that it will not sink when it is added to the medium preloading. If you use the guide rail up and down, it will play a guiding role. How much the slider rises is related to the screws or other transmission methods used, and has nothing to do with the slide rail and the slider.

2. There are basically three different brands. Generally, the gap effect of light preloading and medium preloading will affect the walking accuracy, bearing capacity and rigidity of the guide rail. And the guide rail with clearance can reduce the oscillation and impact caused by reciprocating motion to a certain extent.

3. When loading, the slider will not sink too much. The argument should be elastic deformation. If you want to say how much, there is no marking guide rail material now, because it can be ignored.

The difference between 4. linear guide and linear bearing

1. From the perspective of equipment: it has higher accuracy, larger load and stronger stability than linear bearings.

2. From the cost point of view: the same brand linear guide is more expensive than linear bearings.

From the market point of view, it is more suitable than linear bearings, and linear bearings are relatively only suitable for initial processing.

our company is xianyang linear guide manufacturers, manufacturers of slider, operating guide rail slider, slider, linear guide and other products, if necessary welcome to contact.