Servo gearheads provide mechanical advantage by multiplying electric motor torque while reducing the driven load’s reflected inertia back to the motor.
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Do you know why we still make use of today gearboxes while servo motors becoming more powerful and more complex? The gearboxes are found in many cases in combination with a servo engine, for example because they have low backlash and so are able to cope with high torque. But still we did not give a remedy to the previous issue: why! In this article we discuss the procedure of a servo drive and translate this to the gearboxes.
Technically translated tis means to follow or execute a command. A servo electric motor follows the (complex) task given to him.
For industrial applications, servo motors are used where a drive-system needs to be accurate or highly dynamic. The opinions to the electric motor is performed through a resolver (analogue sensor of rotation) or encoder (digital sensor of rotation). A servo engine is controlled by a servo amplifier, probably with a shaft controller.
The rotation frequency of the actuator is returned by the resolver or encoder. This is capable as well as the rotational quickness, also to look for the position of the rotor and the direction of rotation. The servo amplifier compares the set rotational frequency with the measured rotational frequency. Right now the servo amplifier can drive the actuator to the required values.
Interesting, AC Servo Motors haven’t any significant disadvantages more! Therefore, why would you use a gearbox?
This has the following reasons:
If you want a suprisingly low rate, possibly in combination with a higher torque.
If you want high torque. (Actuators with high torque can be found, but they are exponentially more servo motor and gearbox costly when compared to smaller servomotors)
Inertia matching, in order to prevent that the strain determines the behaviour of the motor.
To be able to absorb the high radial or axial forces of the application form.
If you would like to go “nearby” otherwise the servomotor sticks out the application. Gearboxes can be found in right-angled versions.
Baldor’s GBSM-series of low backlash, servo motor rated gearheads, install easily and directly onto AC brushless servo motors to provide industrial motion control devices with torque multiplication and proper inertial matching. These gearheads are made for servo applications requiring precision, durability, and long trouble-free operation.