CNC lathe spindle speed regulation is in accordance with the control instruction automatic execution, in order to meet the main drive speed regulation and output torque requirements at the same time, CNC lathe commonly used electromechanical combination method, that is, the motor and mechanical gear speed change two methods at the same time. Among them, the gear is reduced to increase the output torque, and the gear shift is used to expand the speed regulation range.
he accuracy, stiffness and thermal deformation of CNC lathe spindle components have a direct impact on the processing quality. Since there is no manual adjustment of CNC lathes during processing, these effects are more serious. At present, there are three main ways to spindle of CNC lathes.

Double row short cylindrical roller bearings and 60° angular contact double row radial thrust ball bearings are used for the front support and paired radial thrust ball bearings are selected for the rear support. This equipment method greatly improves the inductive stiffness of the spindle and can meet the requirements of strong chips, so it is widely used in various CNC lathes of small CNC lathes manufacturers. High-precision double row angular contact ball bearings are selected for the front bearings, and single row angular contact ball bearings are selected for the rear bearings. This equipment has good high-speed function, but the bearing capacity is small, so it is suitable for high-speed, light-load and fine CNC lathe spindles. Front and rear bearings are available in double row and single row tapered bearings. This equipment constrains the high speed and accuracy of the spindle, so it is suitable for medium precision, low speed and heavy load CNC lathe spindle.

The simple CNC CNC lathe formed after the transformation of the feed system of ordinary lathes by stepping motor and single-chip microcomputer has a low cost, but the degree of initiative and function are relatively poor, and the turning accuracy is not high, which is suitable for turning processing of inverted parts with low requirements. According to the requirements of turning processing, the CNC CNC lathe formed by specially planned and equipped with a general CNC system in the structural progress line has strong functions, high degree of initiative and processing accuracy, and is suitable for turning processing of general reversal parts. This CNC lathe can control two coordinate axes together, namely the X axis and the Z axis.