As servo technology has servo motor gearbox evolved-with manufacturers making smaller, yet better motors -gearheads have become increasingly essential partners in motion control. Locating the optimum pairing must take into account many engineering considerations.
• A servo engine running at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the motor during operation. The eddy currents actually produce a drag power within the motor and will have a greater negative impact on motor overall performance at lower rpms.
• An off-the-shelf motor’s parameters may not be ideally suitable for run at a low rpm. When a credit card applicatoin runs the aforementioned motor at 50 rpm, essentially it is not using all of its available rpm. As the voltage continuous (V/Krpm) of the electric motor is set for an increased rpm, the torque continuous (Nm/amp)-which can be directly related to it-can be lower than it needs to be. Consequently, the application needs more current to operate a vehicle it than if the application form had a motor particularly made for 50 rpm. A gearhead’s ratio reduces the motor rpm, which is why gearheads are sometimes called gear reducers. Using a gearhead with a 40:1 ratio,
the electric motor rpm at the input of the gearhead will be 2,000 rpm and the rpm at the output of the gearhead will be 50 rpm. Operating the electric motor at the higher rpm will permit you to avoid the concerns
Servo Gearboxes provide freedom for how much rotation is achieved from a servo. Most hobby servos are limited to just beyond 180 examples of rotation. Most of the Servo Gearboxes make use of a patented external potentiometer to ensure that the rotation quantity is in addition to the gear ratio installed on the Servo Gearbox. In this kind of case, the small gear on the servo will rotate as much times as essential to drive the potentiometer (and hence the gearbox result shaft) into the placement that the signal from the servo controller demands.
Machine designers are increasingly embracing gearheads to take advantage of the latest advances in servo electric motor technology. Essentially, a gearhead converts high-speed, low-torque energy into low-speed, high-torque result. A servo engine provides highly accurate positioning of its output shaft. When both of these devices are paired with one another, they enhance each other’s strengths, providing controlled motion that’s precise, robust, and reliable.
Servo Gearboxes are robust! While there are high torque servos available that doesn’t suggest they can compare to the load capacity of a Servo Gearbox. The small splined output shaft of a regular servo isn’t long enough, huge enough or supported sufficiently to take care of some loads even though the torque numbers look like suitable for the application. A servo gearbox isolates the strain to the gearbox output shaft which is backed by a pair of ABEC-5 precision ball bearings. The external shaft can withstand severe loads in the axial and radial directions without transferring those forces to the servo. Subsequently, the servo runs more freely and is able to transfer more torque to the output shaft of the gearbox.