As servo technology has evolved-with manufacturers generating smaller, yet better motors -gearheads have become increasingly essential companions in motion control. Locating the optimum pairing must take into account many engineering considerations.
• A servo electric motor working at low rpm operates inefficiently. Eddy currents are loops of electric current that are induced within the motor during operation. The eddy currents in fact produce a drag drive within the engine and will have a greater negative impact on motor overall performance at lower rpms.
• An off-the-shelf motor’s parameters might not be ideally suited to run at a low rpm. When an application runs the aforementioned engine at 50 rpm, essentially it isn’t using most of its available rpm. Because the voltage continuous (V/Krpm) of the engine is set for a higher rpm, the torque continuous (Nm/amp)-which is definitely directly related to it-is usually lower than it needs to be. As a result, the application needs more current to operate a vehicle it than if the application form had a motor specifically created for 50 rpm. A gearhead’s ratio reduces the electric motor rpm, which explains why gearheads are sometimes 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 permit you to avoid the concerns
Servo Gearboxes provide freedom for just 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 make use of a patented exterior potentiometer so that the rotation quantity is independent of the equipment 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 therefore 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 motor technology. Essentially, a gearhead converts high-acceleration, low-torque energy into low-speed, high-torque result. A servo electric motor provides highly accurate positioning of its output shaft. When both of these products are paired with one another, they enhance each other’s strengths, offering controlled motion that’s precise, robust, and reliable.
Servo Gearboxes are robust! While there are high torque servos available that doesn’t indicate they can compare to the strain capability of a Servo Gearbox. The small splined result shaft of a regular servo isn’t lengthy enough, large enough or supported well enough to handle some loads even though the torque numbers appear to be appropriate for the application. A servo gearbox isolates the strain to the gearbox output shaft which is backed by a set of ABEC-5 precision ball bearings. The exterior shaft can withstand severe loads in the axial and radial directions without transferring those forces on to the servo. In turn, the servo operates more freely and can transfer more torque to the result shaft of the gearbox.