The Motion Function and Machine Tool Accuracy of Linear Guides
The function of linear guide motion is to support and guide moving parts to perform reciprocating linear motion in a given direction. According to the friction properties, linear motion guides can be divided into sliding friction guides, rolling friction guides, elastic friction guides, fluid friction guides, and other types. Linear bearings are mainly used in automation machinery, such as machine tools, bending machines, laser welding machines, etc. imported from Germany. Of course, linear bearings and linear shafts are used in conjunction. Linear guides are mainly used in mechanical structures with high precision requirements. There is no intermediate medium between the moving and fixed components of linear guides, but rolling steel balls are used.
Linear guide rail is an infinite rolling cycle of steel balls between the slider and the guide rail, allowing the load platform to easily move linearly with high precision along the guide rail, and reducing the friction coefficient to one fiftieth of that of traditional sliding guidance, which can easily achieve high positioning accuracy. The final unit design between the slider and the guide rail enables the linear guide rail to simultaneously bear loads in all directions, including up, down, left, and right.
Sliding block - converts motion from a curve to a straight line. The new guide rail system enables the machine tool to achieve fast feed speed, which is a characteristic of linear guides when the spindle speed is the same. Linear guides, like flat guides, have two basic components; One serves as a fixed component as a guide, and the other is a moving component. Due to the fact that linear guides are standard components, for machine tool manufacturers, all they need to do is process a plane for installing the guide rails and adjust the parallelism of the guide rails.
For the accuracy of the machine tool, a small amount of scraping and grinding on the bed or column is essential, and in most cases, installation is relatively simple. The guide rail used as a guide is made of hardened steel and is finely ground before being placed on the installation plane. Compared with flat guide rails, the geometric shape of the cross-section of linear guide rails is more complex. The reason for the complexity is that grooves need to be machined on the guide rails to facilitate the movement of sliding components. The shape and number of grooves depend on the function that the machine tool needs to complete. For example, a guide rail system that can withstand both linear forces and overturning moments has significant differences in design compared to a guide rail that can only withstand linear forces.
HG Series,Linear Rails