Popular Science: What is an electric spindle?

This issue of Xiaowo introduces you to what is the electric spindle:

The electric spindle is a new technology that integrates the machine tool spindle and the spindle motor in the field of CNC machine tools. Together with linear motor technology and high-speed tool technology, it drives high-speed machining to a new era. The electric spindle is a set of components, including the electric spindle itself and its accessories: electric spindle, high frequency inverter, oil mist lubricator, cooling device, built-in encoder, tool changer, etc. The rotor of the motor directly acts as the main shaft of the machine tool. The housing of the spindle unit is the motor base, and the other parts are used to realize the integration of the motor and the machine tool spindle.

With the rapid development and improvement of electric drive technology (frequency control technology, motor vector control technology, etc.), the mechanical structure of the main drive system of high-speed CNC machine tools has been greatly simplified, basically eliminating the belt drive and gear transmission. . The spindle of the machine tool is directly driven by the built-in motor, which shortens the length of the main drive chain of the machine tool to zero, and realizes the “zero transmission” of the machine tool. The spindle motor and the machine tool spindle are combined into a transmission structure, so that the spindle components are relatively independent from the transmission system and the overall structure of the machine tool, so that it can be made into a "spindle unit", commonly known as an "electric spindle" (Electrical Spindle) , Motor Spindle ). Since the current electric spindle mainly uses an AC high-frequency motor, it is also called “High Frequency Spindle.” Since there is no intermediate transmission link, it is sometimes called “Direct Drive Spindle”.

The above is provided by the official website of Rundawords Electric Spindle. More motor purchase knowledge is welcome to visit the company website: http://www.rundawords.com/