Can a stepper motor be equipped with a planetary gearbox? The stepper motor equipped with a planetary gearbox is called a stepper planetary motor. This is a widely used speed reduction device, which can be applied to smart cars, 5G communications, smart medical care, smart cities, smart logistics, smart robots, smart homes, consumer electronics, precision optical instruments, mechanical equipment, automatic industrialization. Following are the general cases when a stepper planetary gearbox is used.
1. It depends on the required torque. If it’s beyond what a motor can provide, then a reducer or gearbox should be added to increase the torque.
2. Stepper motor is an open-loop control element that converts electrical pulse signals into angular displacement or linear displacement. In the case of non-overload, the motor speed and stop position only depend on the frequency and pulse number of the pulse signal, and are not affected by the load change. When the stepper driver receives a pulse signal, it drives the stepper motor to rotate at a fixed angle, which is called “step angle”. Its rotation runs step by step at a fixed angle. The angular displacement can be controlled by controlling the number of pulses, so as to achieve the purpose of accurate positioning. At the same time, the speed and acceleration of the motor rotation can be controlled by the pulse frequency, so as to achieve the purpose of speed adjustment.
3. The principle of the planetary gearbox is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the required number of revolutions and obtain a larger torque. The gear with fewer teeth on the drive shaft of the planetary gearheads meshes with the large gear on the output shaft to achieve the purpose of speed reduction. Ordinary reducers will also have several pairs of gears meshing with the same principle to achieve the ideal reduction effect. The ratio of the number of teeth of the large and small gears is the transmission ratio. Planetary gearboxes are widely used in servo motor, stepper motor, DC motor, and other transmission systems due to their small size, high transmission efficiency, wide deceleration range, and high precision. Its function is to reduce the speed, increase the torque and reduce the load/motor inertia ratio under the premise of precise transmission.
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