As servo technology has evolved-with manufacturers generating smaller, yet better motors -gearheads are becoming increasingly essential partners in motion control. Locating the ideal pairing must consider many engineering considerations.
• A servo engine operating at low rpm operates inefficiently. Eddy currents are loops of electrical current that are induced within the engine during procedure. The eddy currents in fact produce a drag force within the motor and will have a greater 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 a credit card applicatoin runs the aforementioned electric motor at 50 rpm, essentially it is not using all of its obtainable rpm. As the voltage continuous (V/Krpm) of the motor is set for a higher rpm, the torque continuous (Nm/amp)-which is usually directly related to it-is definitely lower than it needs to be. Because of this, the application needs more current to drive it than if the application had a motor specifically made for 50 rpm. A gearhead’s ratio reduces the electric motor rpm, which explains why gearheads are occasionally called gear reducers. Utilizing 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 motor at the higher 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 degrees of rotation. Many of the Servo Gearboxes use a patented external potentiometer so that the rotation quantity is in addition to the equipment ratio installed on the Servo Gearbox. In this kind of case, the small equipment on the servo will rotate as many times as necessary to drive the potentiometer (and therefore the servo motor gearbox Gearbox result shaft) into the position that the transmission from the servo controller demands.
Machine designers are increasingly embracing gearheads to take advantage 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 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’s precise, robust, and dependable.
Servo Gearboxes are robust! While there are high torque servos out there that doesn’t indicate they can compare to the strain capacity of a Servo Gearbox. The tiny splined result shaft of a regular servo isn’t long enough, large enough or supported well enough to handle some loads even though the torque numbers seem to be appropriate for the application form. A servo gearbox isolates the strain to the gearbox result shaft which is backed by a set of ABEC-5 precision ball bearings. The external 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.