Composition of linear motor drive
The linear motor drive device is composed of a rolling guide, a position measuring system, and a linear motor. At present, there are few domestic high-speed machining centers that use linear motors to drive linear three-axis, but now high-speed machining centers in advanced foreign countries have slowly begun to widely use linear motors to drive linear three-axis, for example: Germany's high-speed The machining centers are all linear motors, and the feed speed is 2-3 times faster than the traditional servo motor + rolling screw. The traditional servo motor + rolling screw drives the linear three-axis feed speed At 48m / min, the linear motor is used to drive the linear three-axis feed speed up to 120m / min. It can be seen that the feed speed of the traditional servo motor + rolling screw driving the linear three axis is not as fast as the linear motor driving the linear three axis.
Characteristics of linear three-axis driven by linear motor
The linear three-axis linear motor drive has the characteristics of fast speed, excellent rigidity and high efficiency. Nowadays, the use of linear motors to drive linear three-axis is still not mainstream, because the technology of linear motors to drive linear three-axis is still mature enough. Linear motor technology now has many problems, such as expensive, high heat generation, poor transmission stability and so on. However, it is foreseeable in the future that the linear motor drive linear three-axis technology will gradually mature and the price will gradually decrease, so in the future linear motor drive linear three-axis technology will be slowly adopted by various CNC machine tools, and the servo motor + Rolling screws will be gradually reduced in CNC machine tools. The market is cruel and everyone understands the reason for survival of the fittest. Those who should withdraw from the stage will quit.
