In the feed transmission system of the machine tool, the guide rail plays a guiding and supporting role, that is, the support parts and ensure that they can accurately move along the specified direction under the action of external forces. In a pair of guide rails, the guide rail that is connected with the support part and fixed is called the support guide rail, and the guide rail that is connected with the moving parts is called the moving guide rail. The accuracy and performance of the guide rail have a great impact on the machining accuracy, bearing capacity, service life and the performance of the servo system. Therefore, the guide rails on the special machine for servo gate valve have the following requirements.

High guiding accuracy

The guiding accuracy ensures the accuracy of the motion path of the component. The guiding accuracy is affected by the structural shape of the guide rail, the combination method, the manufacturing accuracy and the adjustment of the guide rail clearance.

Good wear resistance

Good wear resistance makes the guiding accuracy of the guide rail be maintained for a long time and the service life is long. The wear resistance is affected by the material, hardness, lubrication and load of the guide pair.

Sufficient stiffness

The guide rail should have enough stiffness to ensure that no excessive deformation is generated under the action of load, so as to ensure the relative position and guiding accuracy between the components. The stiffness is affected by the structure and size of the guide rail.

It has the stability of low speed motion

When moving parts move at low speed on the guide rail, it is easy to produce "crawling" phenomenon, which will cause the surface roughness value of the machined surface to increase, so the guide rail is required to move smoothly at low speed. The main factors affecting the smoothness of the guide rail at low speed are friction, lubrication conditions and the stiffness of the transmission system.

Good manufacturability

The guide rail should be simple in structure, good in process and economy, and easy to manufacture, assemble, adjust and maintain. In order to prevent low-speed crawling, it is necessary to have certain guiding accuracy, motion accuracy and positioning accuracy. special machine for servo gate valve generally adopts a guide rail pair with small friction factors, little difference in dynamic and static friction forces, and light and flexible movement. According to the working and frictional properties of the two guides, it can be divided into plastic sliding guide, rolling guide and static guide.

special machine for servo gate valve https://www.zjshuangzheng.com/Servo-Upside-down-Special-Machine-Category