As servo technology has evolved-with manufacturers creating smaller, yet more powerful motors -gearheads have become increasingly essential partners in motion control. Finding the ideal pairing must consider many engineering considerations.
• A servo electric motor working at low rpm operates inefficiently. Eddy currents are loops of electric 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 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 isn’t using all of its offered rpm. Because the voltage constant (V/Krpm) of the electric motor is set for an increased rpm, the torque continuous (Nm/amp)-which is definitely directly linked to it-is lower than it requires to be. Because of this, the application requirements more current to drive it than if the application had a motor specifically made for 50 rpm. A gearhead’s ratio reduces the engine rpm, which is why gearheads are sometimes 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 electric motor at the higher rpm will allow you to avoid the concerns
Servo Gearboxes provide freedom for just how much rotation is achieved from a servo. Many hobby servos are limited to just beyond 180 levels of rotation. Many of the Servo Gearboxes make use of a patented external potentiometer to ensure that the rotation amount is in addition to the gear ratio set up on the Servo Gearbox. In this kind of case, the small equipment on the servo will rotate as much times as essential to drive the potentiometer (and hence 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 electric motor technology. Essentially, a gearhead converts high-quickness, low-torque energy into low-speed, high-torque result. 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, offering controlled motion that’s precise, robust, and reliable.
Servo Gearboxes are robust! While there are high torque servos out there that doesn’t mean they are able to compare to the load capability of a Servo Gearbox. The tiny splined result shaft of a normal servo isn’t long enough, huge 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 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 can transfer more torque to the result shaft of the gearbox.
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