As a kind of micro motor, hollow cup motor has been widely used in modern electronic equipment due to its unique structure and superior performance. Hollow cup motor mainly drives the operation of various small mechanical devices by converting electric current into mechanical energy. Its application covers many fields such as toys, electric vehicles, robots, medical instruments, etc., and is therefore favored by more and more engineers and designers. X-TEAM editor will introduce the main types of hollow cup motors in detail below to help you better understand this technology.
- Classification by structural characteristics
1) Slotless hollow cup motor
Features: The rotor adopts a slotless design, which reduces the friction and loss between the iron core and the permanent magnet, and improves the efficiency and performance of the motor.
Application field: It is usually used in applications requiring high precision and high efficiency, such as aerospace, precision instruments and other fields.
2) Slotted hollow cup motor
Features: The rotor has slots, which can accommodate more coils, thereby increasing the output torque and power of the motor.
Application field: It is often used in occasions requiring large output torque, such as robot joint drive, automation equipment and other fields.
- Classification by working principle
1) DC coreless motor
Features: Powered by DC power supply, the motor is driven to rotate by the force of current in the magnetic field.
Application field: Widely used in various portable instruments, personal equipment and electric vehicles.
2) AC coreless motor
Features: Powered by AC power supply, the motor is driven to rotate by the alternating magnetic field generated by AC power.
Application field: Commonly used in applications that require AC power supply, such as some household appliances and industrial equipment.
- Classification by application occasions
1) High-speed coreless motor
Features: Suitable for occasions requiring high-speed rotation.
Application field: Such as attitude control actuators and high-speed centrifuges in aerospace.
2) Low-speed high-torque coreless motor
Features: Suitable for occasions requiring large torque output.
Application field: Such as robot joint drive, precision positioning system in automation equipment, etc.
- Classification by driving mode
1) Brush coreless motor
Features: Mechanical commutator is used to change the direction of current through the contact between brush and commutator to drive the motor to rotate.
Application areas: Commonly used in some applications that have certain requirements on cost and are not very sensitive to electromagnetic interference, such as power tools, toys, etc.
2) Brushless hollow cup motor
Features: Use electronic commutator, use electronic components such as Hall sensors to sense the rotor position, and control the current direction to achieve brushless drive.
Application areas: Due to its high efficiency, low noise, long life and other advantages, it is widely used in aerospace, military, medical and other fields, such as satellite attitude control actuators, gastroscopic surgery robots, etc.
- Classification by stator structure
1) Internal stator hollow cup motor
Features: The stator is located inside the motor and the rotor rotates around the stator.
Application areas: Commonly used in some applications with compact structure and high performance, such as precision instruments, optical equipment, etc.
2) External stator hollow cup motor
Features: The stator is located outside the motor and the rotor rotates inside the stator.
Application areas: Commonly used in some applications that require a large installation space and have certain performance requirements, such as large-scale automation equipment, industrial robots, etc.
In recent years, coreless motors, as an efficient and precise power device, have been widely recognized and applied in various industries. Different types of coreless motors have distinct characteristics and can play a pivotal role in their own fields. In a variety of application scenarios, each type of coreless motor has strongly promoted the advancement of science and technology and the upgrading of the industry with its unique performance advantages. The innovative design concepts of these motors and their wide application practices have not only significantly improved the overall performance of the products, but also injected new vitality into the vigorous development of related industries.