As servo technology has evolved-with manufacturers making smaller, yet better motors -gearheads are becoming increasingly essential companions in motion control. Finding the ideal pairing must consider many engineering considerations.
• A servo electric motor operating 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 pressure within the motor and will have a larger negative impact on motor efficiency at lower rpms.
• An off-the-shelf motor’s parameters might not be ideally suitable for run at a low rpm. When an application runs the aforementioned engine at 50 rpm, essentially it is not using most of its offered rpm. As the voltage continuous (V/Krpm) of the motor is set for a higher rpm, the torque continuous (Nm/amp)-which is directly related to it-is definitely lower than it requires to be. As a result, the application needs more current to drive it than if the application form had a motor specifically made for 50 rpm. A gearhead’s ratio reduces the electric motor rpm, which is why gearheads are occasionally called gear reducers. Using a gearhead with a 40:1 ratio,
the 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 motor at the bigger rpm will allow you to avoid the concerns
Servo Gearboxes provide freedom for how much rotation is achieved from a servo. The majority of hobby servos are limited by just beyond 180 degrees of rotation. Many of the Servo Gearboxes utilize a patented external potentiometer to ensure that the rotation quantity is independent of the gear ratio installed on the Servo Gearbox. In such case, the small equipment on the servo will rotate as much times as necessary to drive the potentiometer (and hence the gearbox output shaft) into the position that the signal from the servo controller calls for.
Machine designers are increasingly embracing gearheads to take benefit of the latest advances in servo engine technology. Essentially, a gearhead converts high-quickness, low-torque energy into low-speed, high-torque result. A servo motor provides highly accurate positioning of its output shaft. When these two products are paired with each other, they promote each other’s strengths, providing controlled motion that is precise, robust, and reliable.
Servo Gearboxes are robust! While there are high torque servos on the market that doesn’t imply they can compare to the load capability of a Servo Gearbox. The tiny splined output shaft of a regular servo isn’t long enough, large enough or supported sufficiently to take care of some loads despite the fact that the torque numbers appear to be appropriate for the application. A servo gearbox isolates the load to the gearbox output shaft which is backed by a set of ABEC-5 precision ball bearings. The external shaft can withstand intense 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.