In the factory, the servo drive is almost "invisible merit”. It does not go to move things, do not go to welding, do not go to cutting, but without it, servo motors with no training of the same horse - run unstable, braking, work is not spectrum.
How Does a Servo Drive Really Work?
Imagine that the CNC system (or PLC controller) gave it a "task list” - such as how much speed, how far to go, how much torque. The servo drive receives the command, and then manages the current, voltage, and speed of the motor.
There is also a feedback device on the motor (like
encoders and such small things), it will keep giving the drive "playing small reports”: I now run how fast, run to where, torque enough. Drive according to this real-time information, constantly correct the motor action - this is the so-called closed-loop control.
To put it bluntly, the servo drive is to let the motor in accordance with the "predetermined script” play, the line is not more than a word, the action is not worse than a millimeter.
What It Can Do
* Control speed: for example, in the packaging machine, the conveyor belt should be slowly accelerated, and finally stopped accurately, without spilling a grain of sugar.
* Control position: like CNC machine tool alignment, robot arm gripping parts, are required to position fine to the millimeter or even finer.
* Control torque: welding robot in the pressure of the weldment, the torque should be stable, otherwise either welding is not firm or pressure bad material.
Common Application Scenarios
* CNC machine tools: how the tool goes, how the workpiece turns, the driver has to keep an eye on it, to ensure that the size cut out without error.
* Industrial robots: material handling, assembly, welding, the smoothness and accuracy of the action rely on it.
* Automated production line: transportation, sorting, positioning, all rely on servo drives to make the equipment run rhythmically.
* Packaging and printing: cutting film, coding, alignment, it has to control.
Drive "Several Kinds of Personality”
* AC Servo Drive (AC Servo Drive): do a big job, suitable for high speed and high load, robotics and large-scale equipment love to use it.
* DC Servo Drive (DC Servo Drive): simple structure, low cost, suitable for light work and slow work.
* Digital servo drive: high control accuracy, fast response, can play a variety of complex actions, suitable for the occasions of high precision requirements.
Tips for Selecting Servo Drive
1. First look at the difficulty of the work: high-speed and high-precision work with AC digital drives, light and simple work DC enough.
2. Voltage and power to the right place: match the motor, otherwise it is either not with or prone to failure.
3. Accuracy and response speed: high requirements, do not save on this.
4. Brand and service: choose a good reputation, reliable after-sales, such as Fanuc's servo drive, our Songwei repair and replacement of a lot of experience, the stability is really good.
To Be Honest
Servo drive in automation, belonging to the kind of usually do not see, but a failure can make the whole production line stop the key pieces. Don't underestimate it. Maintenance should be in place, parameters should not be changed, and alarms should be checked in time.
In our Songwei side,
Fanuc servo drive is one of the most repaired models. Whether it is CNC machine tools or robots, replace the drive with a good tune, the machine can immediately restore the precision and stability of the state.
If you need more detailed Fanuc servo drive selection advice, or hand drive old alarm, unstable performance, directly to
Songwei, we can not only help you repair, but also give you with the right model, so that your automation equipment to run fast and stable.
