Air can also be used to move the medium between the component and the rail. It is also available in two versions, a pneumatic hydrostatic rail and a pneumatic hydrodynamic guide, which work in the same way as a hydraulic rail.
Use a more common anti-friction rail, which is to install an anti-friction material (such as PVC or bronze mixed materials) on the moving parts to replace liquid medium such as oil or air. Its function is similar to that of a liquid medium. The anti-friction material mounted on the moving element should be designed with an oil groove to meet the needs of oil lubrication or other forms of lubrication between the moving element and the surface of the guide rail.
As we all know, the contact area between the plane guide and the moving component is relatively large, and the moving component should be used for rapid micro-feeding. It is necessary to overcome the inertia of the moving components and therefore will cause creep. When the ball screw or other driving force pushes the moving element to move, a slight adhesion resistance is generated. When the moving element starts to move, a slight jump occurs due to the moving element being caught, causing creep. It has little effect on large movements, but it is a problem for micro movements.
Adjustability is a unique feature of flat rails. Depending on the use of the rails, the flat rail system has at least one or more adjustable sides. As the moving element moves along the sides of the linear guide, it is extremely important to ensure that the moving element is in intimate contact with the side of the rail. A commonly used method of adjustment is a slanted iron between the moving element and the opposite side of the rail contact surface. The shape is a tapered bar angle iron that can be precisely adjusted to eliminate the gap between the moving part and the guide rail. If the sliding member or the guide rail is worn, the gap between the contact surfaces is increased, and the inclined iron can be adjusted to compensate.
The machine tool manufacturer has invented the patented technology for automatic adjustment of the inclined iron. Its basic principle is to maintain the fixed tension of the inclined iron. Once the rail system is worn, the inclined iron can automatically eliminate the gap between the moving part and the guide rail.
Linear Guides
The new rail system allows the machine to achieve fast traverse speeds. At the same spindle speed, rapid traverse is a linear guide. Linear guides, like flat guides, have two basic components; one for the fixed component and the other for the moving component. Since linear guides are standard components, for machine tool builders. The only thing to do is to machine the parallelism of the plane of the mounting rail and the alignment rail. Of course, in order to ensure the accuracy of the machine tool, a small amount of scraping of the bed or column is essential, and in most cases, the installation is relatively simple.
The guide rail as a guide is hardened steel, which is finely ground and placed on the mounting plane. Compared with the planar guide rail, the geometry of the cross section of the linear guide is more complicated than that of the planar guide. The reason for the complexity is that the groove needs to be machined on the guide rail to facilitate the movement of the sliding element. The shape and number of the groove depend on the machine tool to be completed. The function. For example: a rail system that withstands both linear forces and subversive moments, compared to rails that only accept linear forces. There are big differences in design.
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