Three ways of CNC lathe spindle bearings
The accuracy, stiffness and thermal deformation of the spindle bearing parts of CNC lathes directly affect the machining quality. Because CNC lathes do not require manual conditioning during processing, these effects are even more severe. At present, there are three main ways of spindle bearings for CNC lathes.
The front support consists of a double-row short cylindrical roller bearing and a 60 ° angular touch double-row radial thrust ball bearing. The rear support is equipped with a pair of radial thrust ball bearings. This structure greatly improves the overall rigidity of the spindle, can meet the requirements of strong chips, and is widely used in various CNC lathes of small CNC lathe manufacturers. The front bearing uses high-precision double-row angular touch ball bearings, and the rear bearing uses single-row (or double-row) angular touch ball bearings. This equipment has outstanding high-speed performance, but its load carrying capacity is small, so it is suitable for high-speed, light-load and fine CNC lathe spindles.
Double-row and single-row tapered bearings are used for front and rear bearings. This structure constrains the high speed and accuracy of the spindle, and is suitable for the spindle of medium-precision, low-speed, and heavy-duty CNC lathes. Stepping motors and single-chip microcomputers are used to modify the simple CNC lathes formed by the ordinary lathe feed system, but the cost is low, but the degree of automation and function is poor, and the turning accuracy is not high. Suitable for low-demand rotating parts.
According to turning requirements, CNC lathes are specially planned and equipped with a universal CNC system. The CNC system has powerful functions, high degree of automation and high machining accuracy. Suitable for turning of general turning parts. The CNC lathe can control two axes together, namely X axis and Z axis.