A magnetorheological fluid differential damping torque control device
A magnetorheological fluid and damping torque technology, which is applied in the field of torque control devices, can solve the problems of the influence of the working time of the damper, the increase of the heat generation of the magnetorheological fluid damper, and the single direction, so as to reduce the temperature, increase the surface area, reduce the effect of heat
Inactive Publication Date: 2015-08-26
NINGBO UNIV
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Problems solved by technology
However, the traditional magneto-rheological fluid torque output device has certain limitations in real-time control, such as a single output torque direction, and because a group of coils are used to generate magnetic field, when the current passing through the coil increases to a certain value, Continuing to increase the current in the coil will cause a sharp increase in the heat generation of the magnetorheological fluid damper, which will have a great impact on the working time of the damper
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[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0013] As shown in the figure, a magnetorheological fluid differential damping torque control device includes a polishing head 1, a DC motor 2, a torque output plate 3 and two magnetorheological fluid dampers arranged symmetrically. The damper is fixedly connected to the main shaft of the machine tool (not shown in the figure) through the mounting plate 4, and the magneto-rheological fluid damper includes a housing 5, a servo motor 6, a damping disc 7, an input shaft 8, a first pulley 9, and a second pulley 10 and the synchronous belt 11, the servo motor 6 is fixedly installed on the mounting plate 4, the servo motor 6 is fixedly connected with the first pulley 9 through the coupling 61, the input shaft 8 is fixedly connected with the second pulley 10 through the coupling 61, and the damping disc 7 is located in the housing 5, the input shaft ...
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The invention discloses a magnetorheological fluid differential damping moment controller. The magnetorheological fluid differential damping moment controller is characterized by comprising a lapping and polishing head, a DC (direct current) motor, a moment output plate and two symmetrically arranged magnetorheological fluid dampers, wherein the magnetorheological fluid dampers are fixedly connected with a machine tool main shaft through a mounting plate, shells of the two magnetorheological fluid dampers are fixedly connected, the moment output plate is fixedly connected with the shells and is vertical to the shells, the DC motor is fixedly arranged on the moment output plate and is fixedly connected with the lapping and polishing head through a coupling, and the lapping and polishing head is vertical to the moment output plate. The magnetorheological fluid differential damping moment controller disclosed by the invention has the advantages that the two magnetorheological fluid dampers are used for outputting the moment (namely applying the moment to the lapping and polishing head) and are mutually independent so as to be capable of outputting the moment independently or together; therefore, the total output moment is the vector sum of the two outputted moments, and the controllability of a moment outputting direction is realized; and the heat of the dampers is reduced, and the service lives of the dampers are prolonged.
Description
technical field [0001] The invention relates to a torque control device, in particular to a magneto-rheological fluid differential damping torque control device. Background technique [0002] Magnetorheological fluid is a kind of suspension liquid made by dispersing and dissolving extremely small magnetic material particles in a non-magnetic liquid. Under the action of no magnetic field, it exhibits the characteristics of Newtonian fluid. Under the action of an external magnetic field, its apparent viscosity increases sharply, so that the magnetorheological fluid presents the mechanical properties of a solid. The magnetorheological effect has the advantages of continuous, precise control, rapid control response, and low energy consumption. Based on such good characteristics, magnetorheological fluids have more and more applications in many fields. Among them, the development of magnetorheological fluid torque output device is one of its application fields. However, the tr...
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IPC IPC(8): B24B1/00
Inventor 胡利永徐兴文郑堤詹建明
Owner NINGBO UNIV