As servo technology has evolved-with manufacturers making smaller, yet more powerful motors -gearheads have become increasingly essential partners in motion control. Finding the optimal pairing must consider many engineering considerations.
• A servo motor running at low rpm operates inefficiently. Eddy currents are loops of electric servo motor gearbox current that are induced within the motor during operation. The eddy currents actually produce a drag force within the electric motor and will have a larger negative impact on motor overall performance at lower rpms.
• An off-the-shelf motor’s parameters might not be ideally suitable for run at a minimal rpm. When a credit card applicatoin runs the aforementioned electric motor at 50 rpm, essentially it isn’t using all of its available 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-can be lower than it requires to be. Because of this, the application requirements more current to drive it than if the application form had a motor particularly made for 50 rpm. A gearhead’s ratio reduces the electric motor rpm, which explains why gearheads are sometimes 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 bigger rpm will permit 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. Most of the Servo Gearboxes use a patented external potentiometer to ensure that the rotation amount 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 many times as essential to drive the potentiometer (and therefore the gearbox output shaft) into the placement that the transmission from the servo controller demands.
Machine designers are increasingly embracing gearheads to take advantage of the latest advances in servo engine technology. Essentially, a gearhead converts high-rate, 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 devices are paired with one another, they enhance each other’s strengths, providing controlled motion that is precise, robust, and reliable.
Servo Gearboxes are robust! While there are high torque servos available that doesn’t suggest they are able to compare to the load capability of a Servo Gearbox. The small splined output shaft of a normal servo isn’t long enough, large enough or supported well enough to handle some loads despite the fact that the torque numbers seem to be appropriate for the application form. A servo gearbox isolates the strain to the gearbox output shaft which is backed 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 runs more freely and can transfer more torque to the output shaft of the gearbox.