machine toolElectric spindleDesign points:

(1)Electric spindleSufficient output power:
The spindle load characteristics of CNC machine tools are similar to "constant power", that is, when the spindle speed of the machine tool is high, the output torque is small; When the spindle speed is low, the output torque is large, ensuring that the spindle has sufficient driving force under different working conditions. That is to say, the driving device (spindle motor) of the spindle is required to have a "constant power" characteristic output curve;

(2) Speed range:
In order to ensure that CNC machine tools are suitable for various cutting tools and processing materials; Adapt to various processing techniques,Electric spindleRequire a certain range of rotational speeds. But the requirements for the spindle are lower than the feed rate.

(3)Electric spindleSpeed accuracy:
The general static deviation is less than 5%, and the high requirement is less than 1%;

(4) Quick:
The spindle drive device is sometimes used for positioning function, which requires it to also have a certain speed

Design points of machine tool servo motor:

(1) Requirements for mechanical characteristics of servo motors:
Require the servo motor to have a small speed reduction, be able to maintain a constant torque output within a certain speed range, and have high static stiffness;

(2) Need for high-speed control response:
Mainly in the process of contour machining, especially when processing objects with large curvatures, there are very strict requirements for the speed and torque control response time of servo motors;

(3) Wide range of motor speed regulation:
Used to meet the requirements of various cutting tools and materials suitable for machining workpieces in CNC machine tools, and can be applied to various machining processes.

(4) Overload torque output and constant torque output capability:
The mechanical load of machine tool feed (servo motor) is mainly to overcome the friction and cutting resistance of the worktable, so it mainly has a "constant torque" property, and it should be able to withstand short-term torque overload. Like the mainstream Japanese servo motors in the current market, the overload capacity can reach three times or even more.