What are the basic requirements for CNC automatic lathe guides?

The guide rails of CNC automatic lathe can be generally divided into linear motion guides and circular motion guides according to their motion trajectories. They can be divided into main motion guides, feed motion guides and position adjustment guides according to their working characteristics. According to the friction properties of the contact surface, they can be divided into sliding guides And rolling guides, what are the basic requirements that come with it?

Guidance accuracy refers to the accuracy of the mutual position between the relevant linear surfaces when the moving parts of the lathe are moving along the guide rail. The guide rail has sufficient guide accuracy regardless of the no-load and cutting workpiece, the basic requirements of the guide rail. In addition to the manufacturing accuracy, the main factors affecting the accuracy of the guide rail are the structural form, assembly quality, rigidity and thermal deformation of the guide rail and its support, and the stiffness of the oil film for the static pressure guide rail.

The abrasion resistance of the guide rail refers to the ability of the guide rail to maintain a certain guiding accuracy during long-term use. NC lathes are unavoidable for wear during the work process, so they should strive to reduce the amount of wear, and can automatically compensate or facilitate adjustment after wear. CNC lathes often use rolling guides and static pressure guides with low friction coefficients to reduce guideway wear.

To have sufficient rigidity, the deformation of the guide rail under force will affect the precision and relative position of the guide between the components. Therefore, the guide rail should be sufficient. In order to reduce or balance the impact of external forces, CNC lathes often use methods to increase the size of the guide surface or lick and add auxiliary guides to increase the stiffness.