Why does the motor need to add a reducer?
Why does a motor need to be equipped with a reducer? Ordinary motors cannot achieve a large speed range. If the equipment only requires a speed of a few dozen revolutions per minute, an ordinary motor is even less suitable. This is the reason why a motor needs to be equipped with a reducer.
Release time:
2022-03-15 09:34
www.gdmotor.cn
Why should a motor be added?Reducer?It is easy to understand that a reducer changes the output torque and speed, providing low speed and high torque. The gear ratio of the reducer = input speed/output speed, the slower the speed, the greater the torque. A reducer is actually a type of transmission, but generally, a transmission is used for speed regulation, and it is commonly referred to as a reducer.
A typical reducer has a fixed transmission ratio, and there are also adjustable ones with frequency converters, usually for stepwise speed regulation. This easily reminds us of cars; we all know that cars have an adjustable reducer, which is why cars have several gears. Gasoline engines (diesel engines) are similar to electric motors; the speed can change with the throttle, but the range of change is not large.
Of course, a clutch and a reducer are definitely not the same thing, but when it comes to reducers, people easily think of car transmissions and attribute it to the clutch. In fact, each gear change is completed after pulling the gear lever. Generally, adjustable transmissions cannot bear loads during gear shifts, so the clutch is used to separate the reducer output from the car, and after shifting, they are reconnected. The clutch is just a type of coupling (but it can be separated and connected).
The output power of a motor cannot change without reason; it can only become thermal energy due to various losses. If the power remains constant and the speed decreases, then the force (torque) increases; at the same output power, (angular) speed is inversely proportional to force (torque).
If used in low-speed situations, can a regular low-speed motor work? Or can a servo motor work? A regular low-speed motor definitely cannot work. Generally, the speed ratio of a reducer can be as low as 1:3 or even lower, and it can also be higher than 1:180 or even greater. This means that when a regular motor has a speed of 1380 RPM (4-pole motor), the output speed of the reducer can be as high as 460 RPM or even higher, and as low as 7.6 RPM or even lower. A regular motor cannot achieve such a large speed range; even for multi-pole variable speed motors, the fastest 2-pole motor has a speed of about 2880-2970 RPM, while the slowest 12-pole motor has a speed of about 480-490 RPM. If the equipment only needs a speed of a few tens of RPM, a regular motor is even less suitable, which is why a motor needs to be equipped with a reducer.
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Introduction to Micro DC Gear Motors Micro DC gear motors are a miniaturized motor system, typically consisting of a DC motor and a gearbox. Here are some related introductions to micro DC gear motors: DC Motor Section: Working Principle: The DC motor generates current by moving a conductive coil in a magnetic field, thus producing electromagnetic force to drive the motor's rotation. Structure: Micro DC motors usually adopt a separate structure, including an armature (rotating part) and an electromagnet (stator part). Types: Common types of DC motors include brushed DC motors and brushless DC motors. Brushed DC motors use brushes to connect to the armature, while brushless DC motors control current through an electronic speed controller, eliminating the need for brushes. Gearbox Section: Function: The gearbox is used to slow down the motor's output speed while increasing torque. This is crucial for applications requiring higher torque and lower speeds, such as robotic arms and camera gimbals. Structure: Gearboxes typically consist of gears that achieve the reduction ratio through different gear combinations. The reduction ratio is the ratio of input speed to output speed. Types: Common types of gearboxes include planetary gears, worm gears, and helical gears. Different types of gearboxes are suitable for different application scenarios. Applications: Micro DC gear motors are widely used in various fields, including consumer electronics (such as cameras and printers), medical devices, robotics, and automotive electronics. In these applications, micro DC gear motors are typically used to control precise movements, provide sufficient torque, and achieve efficient performance in limited spaces. Control and Drive: Micro DC gear motors usually require corresponding electronic speed controllers or controllers to precisely control rotation speed and direction. The control system can adjust the motor's output according to application needs, achieving precise position control and speed regulation. Performance Parameters: The performance parameters of micro DC gear motors include rated voltage, rated speed, rated torque, efficiency, etc. These parameters are crucial for selecting and designing motor systems. In summary, micro DC gear motors have been widely applied under the trends of miniaturization, precision, and efficiency, providing reliable driving force for many electric devices and systems.
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