Abstract: Disclosed is a magnetorheological intelligent fixture for grinding, including a container (1), a water bladder (2), a pressure transmitter (4), a water pump (15), a first electromagnet (8), a controller (10), and an elastic telescopic rod. The elastic telescopic rod is disposed at a bottom of the container (1). Each side wall of the container (1) is provided with the water bladder (2). The water bladders (2) are mutually communicated. The water bladders (2) are respectively communicated with the pressure transmitter (14) and the water pump (15) respectively. The water pump (15) is connected to the water tank (6). A workpiece to be clamped is disposed at a top of the elastic telescopic rod. The container (1) is disposed above the first electromagnet (18). The first electromagnet (8), the pressure transmitter (4), and the water pump (15) are all electrically connected to the controller (10).

Abstract: The present disclosure is a high-stability and large-torque magnetorheological fluid clutch. Firstly, in order to prevent sedimentation of the magnetorheological fluid, blades are installed on the disc body of an input disc. When the clutch operates in a power interruption mode, the blades can stir the magnetorheological fluid, so that the sedimented magnetorheological fluid is uniformly mixed. Secondly, in order to improve the maximum transmission torque of the magnetorheological fluid clutch, an excitation magnetic field is increased in a mode that a permanent magnet and an electromagnet are connected in series. Meanwhile, a third electric push rod is used for pushing the input disc, and the magnetorheological fluid works in a shearing-extruding working mode, so that the yield stress of the magnetorheological fluid is improved. Therefore, the maximum transmission torque of the magnetorheological fluid clutch is improved.

Abstract: Disclosed is a magnetorheological fluid automobile bumper, and belongs to the field of automobile bumpers. The magnetorheological fluid automobile bumper comprises a rear bumper body, wherein two front bumper bodies are symmetrically hinged to the front side of the rear bumper body, the ends, close to each other, of the two front bumper bodies are in butt joint with each other, a connecting rod is jointly installed between the front bumper body and the rear bumper body, one end of the connecting rod is hinged to the front bumper body, and the other end of the connecting rod is slidably installed with the rear bumper body; and a plurality of magnetorheological fluid buffers are installed on the rear side of the rear bumper body.

Abstract: The present disclosure is a high-stability and large-torque magnetorheological fluid clutch. Firstly, in order to prevent sedimentation of the magnetorheological fluid, blades are installed on the disc body of an input disc. When the clutch operates in a power interruption mode, the blades can stir the magnetorheological fluid, so that the sedimented magnetorheological fluid is uniformly mixed. Secondly, in order to improve the maximum transmission torque of the magnetorheological fluid clutch, an excitation magnetic field is increased in a mode that a permanent magnet and an electromagnet are connected in series. Meanwhile, a third electric push rod is used for pushing the input disc, and the magnetorheological fluid works in a shearing-extruding working mode, so that the yield stress of the magnetorheological fluid is improved. Therefore, the maximum transmission torque of the magnetorheological fluid clutch is improved.

Abstract: The present disclosure provides a magnetic grinding device and a magnetic grinding control method, and relates to the field of machining. According to the device, a magnet platform of a grinding piece fixing table is connected with an electromagnet; the grinding piece fixing table is used for fixing a to-be-ground workpiece; an output end of a programmable power supply is connected with a coil of the electromagnet; a permanent magnet grinding rod is located above the to-be-ground workpiece; and a magnetic grinding control system is connected with the programmable power supply and is used for acquiring grinding points, on the to-be-ground workpiece, of the permanent magnet grinding rod, and controlling an output voltage of the programmable power supply by utilizing a removal amount of a blank workpiece surface shape of the to-be-ground workpiece, the grinding points and a pulse width modulation (PWM) control method.

Abstract: Disclosed is a magnetorheological intelligent fixture for grinding, including a container (1), a water bladder (2), a pressure transmitter (4), a water pump (15), a first electromagnet (8), a controller (10), and an elastic telescopic rod. The elastic telescopic rod is disposed at a bottom of the container (1). Each side wall of the container (1) is provided with the water bladder (2). The water bladders (2) are mutually communicated. The water bladders (2) are respectively communicated with the pressure transmitter (14) and the water pump (15) respectively. The water pump (15) is connected to the water tank (6). A workpiece to be clamped is disposed at a top of the elastic telescopic rod. The container (1) is disposed above the first electromagnet (18). The first electromagnet (8), the pressure transmitter (4), and the water pump (15) are all electrically connected to the controller (10).