As servo technology has evolved-with manufacturers generating smaller, yet better motors -gearheads have become increasingly essential partners in motion control. Locating the optimum pairing must consider many engineering considerations.
• A servo motor working at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the engine during operation. The eddy currents in fact produce a drag pressure within the motor and will have a larger negative impact on motor overall performance at lower rpms.
• An off-the-shelf motor’s parameters may not be ideally suited to run at a minimal rpm. When a credit card applicatoin runs the aforementioned motor at 50 rpm, essentially it is not using most of its available rpm. As the voltage constant (V/Krpm) of the electric motor is set for a higher rpm, the torque constant (Nm/amp)-which is directly linked to it-is certainly lower than it needs to be. As a result, the application requirements more current to drive it than if the application had a motor particularly created for 50 rpm. A gearhead’s ratio reduces the electric motor rpm, which is why gearheads are sometimes called gear reducers. Utilizing a gearhead with a 40:1 ratio,
the engine 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 just how much rotation is achieved from a servo. Most hobby servos are limited to just beyond 180 degrees of rotation. Many of the Servo Gearboxes utilize a patented external potentiometer so that the rotation quantity is independent of the equipment ratio set up on the Servo Gearbox. In this kind of case, the small equipment on the servo will rotate as many times as necessary to drive the potentiometer (and therefore the servo motor gearbox gearbox result shaft) into the placement 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-speed, low-torque energy into low-speed, high-torque result. A servo electric motor provides highly accurate positioning of its result shaft. When both of these products are paired with each other, they enhance each other’s strengths, providing controlled motion that is precise, robust, and dependable.
Servo Gearboxes are robust! While there are high torque servos available that doesn’t mean they can compare to the load capacity of a Servo Gearbox. The tiny splined result shaft of a normal servo isn’t lengthy enough, large enough or supported well enough to take care of some loads even though the torque numbers appear to be suitable 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. In turn, the servo operates more freely and is able to transfer more torque to the result shaft of the gearbox.