As servo technology has evolved-with manufacturers making smaller, yet better motors -gearheads are becoming increasingly essential partners in motion control. Finding the optimal pairing must take into account many engineering considerations.
• A servo engine 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 in fact produce a drag drive within the motor and will have a greater negative effect on motor efficiency 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 continuous (V/Krpm) of the motor is set for a higher rpm, the torque constant (Nm/amp)-which is definitely directly linked to it-is usually lower than it needs to be. As a result, the application requirements more current to drive it than if the application had a motor specifically created for 50 rpm. A gearhead’s ratio reduces the engine rpm, which is why gearheads are occasionally called gear reducers. Using a gearhead with a 40:1 ratio,
the electric 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 enable you to avoid the concerns
Servo Gearboxes provide freedom for how much rotation is achieved from a servo. Many hobby servos are limited to just beyond 180 degrees of rotation. Most of the Servo Gearboxes use a patented exterior potentiometer to ensure that the rotation quantity is independent of the equipment ratio set up on the Servo Gearbox. In this kind of case, the small gear on the servo will rotate as many times as necessary to drive the potentiometer (and therefore the gearbox output shaft) into the position 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-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 promote each other’s strengths, providing controlled motion that’s precise, robust, and reliable.
Servo Gearboxes are robust! While there are high torque servos on the market that doesn’t suggest they can compare to the strain capacity of a Servo Gearbox. The small splined result shaft of a regular servo isn’t lengthy enough, huge enough or supported sufficiently to take care of some loads even though the torque numbers seem to be suitable for the application. A servo gearbox isolates the strain to the gearbox output shaft which is supported 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. Subsequently, the servo runs more freely and is able to transfer more torque to the output shaft of the gearbox.