| 摘要 |
#CMT# #/CMT# The motor has a magnetic circuit (12) mounted on a body (14) of a stator (4), and a set of coils (10) mounted on the circuit. A rotor (6) is mounted with the stator through a rolling bearing (8) e.g. ball bearing. A multi-polar disk-ring magnet (16) is mounted on a tubular body (18) of the rotor. The circuit has two parts (12a, 12b) arranged on sides of the magnet. The magnet, the parts of the circuit and the bearing are arranged between the tubular body of the rotor and the stator at same radial level. The tubular body is made of a non-magnetic material. #CMT#USE : #/CMT# Step type electric ring motor for use in robotic or medical application and in an optical field. #CMT#ADVANTAGE : #/CMT# The magnet, the parts of the magnetic circuit and the rolling bearing are arranged between the tubular body of the rotor and the stator at the same radial level, such that reduced radial distance is formed between interior and exterior diameters of the motor, so as to ensure reduced encumbrance of the motor. The multi-polar disk-ring magnet is mounted on the tubular body of the rotor, so as to achieve reduced inertia of rotation of the rotor. The parts of the magnetic circuit are arranged on the sides of the magnet, and the coils are mounted on the magnetic circuit, such that the motor obtains high torque and precision. The motor produces reduced residual torque. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a step type electric ring motor along a line. 4 : Stator 6 : Rotor 8 : Rolling bearing 10 : Coils 12 : Magnetic circuit 12a, 12b : Parts 14 : Body 16 : Multi-polar disk-ring magnet 18 : Tubular body. |
