As servo technology has evolved-with manufacturers generating smaller, yet more powerful motors -gearheads are becoming increasingly essential partners in motion control. Locating the optimal pairing must take into account many engineering considerations.
• A servo motor working at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the electric motor during procedure. The eddy currents actually produce a drag drive within the motor and will have a larger negative effect on motor overall performance at lower rpms.
• An off-the-shelf motor’s parameters may 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 all of its offered rpm. As the voltage continuous (V/Krpm) of the electric motor is set for a higher rpm, the torque constant (Nm/amp)-which can be directly linked to it-is certainly lower than it needs to be. As a result, the application requirements more current to operate a vehicle it than if the application had a motor particularly designed 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 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 engine 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 levels of rotation. Many of the Servo Gearboxes utilize a patented external potentiometer to ensure that the rotation amount is independent of the gear ratio set up on the Servo Gearbox. In such case, the small gear on the servo will rotate as many times as essential to drive the potentiometer (and hence the gearbox result shaft) into the placement that the signal from the servo controller demands.
Machine designers are increasingly turning to gearheads to take advantage of the latest advances in servo engine technology. Essentially, a gearhead converts high-speed, low-torque energy into low-speed, high-torque output. A servo motor provides extremely accurate positioning of its output shaft. When both of these products are paired with each other, they promote 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 suggest they can 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 take care of some loads despite the fact that the torque numbers look like suitable for the application form. A servo gearbox isolates the load to the gearbox result shaft which is supported 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 on to the servo. In turn, the servo runs more freely and can transfer more torque to the output shaft of the gearbox.