In fact, the advent of the linear motor makes the servo motor + rolling screw drive device very embarrassing, because the linear motor can replace the servo motor + rolling screw to drive the linear three axis. Linear motors are generally used in high-speed machining centers. Generally, CNC machine tools rarely use linear motors to drive linear three-axis, because the current linear motor drive three-axis technology is still mature enough. Next, let the editor introduce the advantages and disadvantages of the linear three-axis linear motor drive.
Advantages of linear three-axis linear motor drive machining center
Linear motor drives linear three-axis has the advantages of fast speed, high efficiency and excellent rigidity. The linear motor drive linear three-axis speed is 2-3 times faster than the servo motor + rolling screw drive linear three-axis speed, servo motor + rolling screw drive linear three-axis feed speed is generally 48m / min, while the linear motor The feed speed of driving linear three-axis is 86m / min; because the servo motor + rolling screw is a transmission form, the rigidity is not as good as the linear motor.
Disadvantages of the linear three-axis of the linear motor drive machining center
Due to the current technology of linear motors driving linear three-axis is not mature, there are still many shortcomings of linear motors, such as expensive, high heat generation, poor transmission stability and other shortcomings. The manufacturing cost of the linear motor is very expensive, so the price is also expensive. Due to the high speed of the linear motor, a certain amount of heat will be generated during high-speed movement. The faster the speed of the linear motor, the higher the heat. Therefore, the linear motor driving the linear axis device must be equipped with a cooling system.