As servo technology has evolved-with manufacturers producing smaller, yet better motors -gearheads have become increasingly essential partners in motion control. Locating the optimal pairing must consider many engineering considerations.
• A servo electric motor operating at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the motor during operation. The eddy currents actually produce a drag pressure within the electric motor and will have a greater negative effect on motor functionality at lower rpms.
• An off-the-shelf motor’s parameters might not be ideally suitable for run at a low rpm. When an application runs the aforementioned electric motor at 50 rpm, essentially it isn’t using most of its available rpm. Because the voltage continuous (V/Krpm) of the electric motor is set for a higher rpm, the torque continuous (Nm/amp)-which is directly linked to it-can be lower than it needs to be. Consequently, the application needs more current to drive it than if the application form had a motor specifically designed for 50 rpm. A gearhead’s ratio reduces the motor rpm, which explains why gearheads are sometimes called gear reducers. Using 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 enable 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 examples of rotation. Most of the Servo Gearboxes make use of a patented external potentiometer to ensure that the rotation amount 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 much times as necessary to drive the potentiometer (and therefore the 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 motor technology. Essentially, a gearhead converts high-velocity, low-torque energy into low-speed, high-torque output. A servo electric motor provides highly accurate positioning of its output shaft. When these two products are paired with each other, 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 on the market that doesn’t imply they are able to compare to the strain capacity of a Servo Gearbox. The tiny splined result shaft of a regular servo isn’t lengthy enough, large enough or supported sufficiently to handle some loads despite the fact that 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 pair of ABEC-5 precision ball bearings. The exterior shaft can withstand severe loads in the axial and radial directions without transferring those forces to the servo. Subsequently, the servo runs more freely and can transfer more torque to the result shaft of the gearbox.