As servo technology has evolved-with manufacturers producing smaller, yet more powerful motors -gearheads have become increasingly essential companions in motion control. Locating the ideal pairing must consider many engineering considerations.
• A servo motor running at low rpm operates inefficiently. Eddy currents are loops of electric current that are induced within the engine during operation. The eddy currents in fact produce a drag push within the engine and will have a larger negative effect 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 a credit card applicatoin runs the aforementioned electric motor at 50 rpm, essentially it is not using most of its offered rpm. As the voltage constant (V/Krpm) of the engine is set for an increased rpm, the torque constant (Nm/amp)-which can be directly linked to it-is certainly lower than it requires to be. Because of this, the application requirements more current to operate a vehicle it than if the application form had a motor particularly designed for 50 rpm. A gearhead’s ratio reduces the engine rpm, which explains why gearheads are occasionally called gear reducers. Utilizing 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 engine at the higher rpm will allow 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 degrees of rotation. Many of the Servo Gearboxes use a patented exterior potentiometer so that the rotation amount is in addition to the gear ratio installed on the Servo Gearbox. In such case, the small equipment on the servo will rotate as many times as essential to drive the potentiometer (and therefore the gearbox output shaft) into the position that the transmission from the servo controller calls for.
Machine designers are increasingly turning to gearheads to take benefit of the most recent advances in servo engine technology. Essentially, a gearhead converts high-rate, low-torque energy into low-speed, high-torque output. A servo motor provides extremely accurate positioning of its result shaft. When these two products are paired with one another, they promote 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 indicate they are able to compare to the strain capacity of a Servo Gearbox. The tiny splined output shaft of a regular servo isn’t long enough, large enough or supported sufficiently to handle some loads despite the fact that the torque numbers look like appropriate for the application. A servo gearbox isolates the load to the gearbox output shaft which is supported by a pair of ABEC-5 precision ball bearings. The exterior shaft can withstand extreme loads in the axial and radial directions without transferring those forces on to the servo. In turn, the servo operates more freely and is able to transfer more torque to the result shaft of the gearbox.