Magnetorheological polishing machine

Abstract

The invention relates to the field of polishing equipment, and discloses a magneto-rheological polishing machine which comprises a liquid storage tank. The machining mechanism comprises a first polishing assembly and a first liquid spraying assembly, the first polishing assembly is provided with a first polishing wheel and a first magnetic field generator which can move in the three-dimensional direction, the first liquid spraying assembly comprises a first conveying pump, a first disperser, a first nozzle and a first collector, and the input end of the first disperser is connected to a liquid storage tank through a pipeline; the output end of the first disperser is connected to the input end of the first nozzle through a pipeline, the output end of the first nozzle faces one side of the bottom of the first polishing wheel, the first conveying pump is arranged on the pipeline of the liquid storage tank and the first disperser, the first collector is located on the other side of the bottom of the first polishing wheel, and a first flow baffle is arranged in the first disperser. The pulsation phenomenon generated by the first conveying pump is effectively relieved, and the machining precision of magnetorheological polishing is effectively improved.

Description

Technical Field

[0001] The invention relates to a polishing device, in particular to a magnetorheological polishing machine. Background Art

[0002] Ceramic guides are key moving structural components in ultra-precision machining and ultra-precision measuring equipment. They are widely used in integrated circuit equipment manufacturing, ultra-precision measuring instruments, ultra-precision machine tools and other fields, such as lithography machine precision workbenches, three-coordinate precision measuring instrument working axes, CNC machine tools, etc. Their accuracy determines the machining accuracy and life of the entire equipment to a certain extent.

[0003] With the development of technology, the processing of ceramic guide rails can now be carried out using magnetorheological polishing technology. Magnetorheological polishing technology uses the rheological properties of magnetorheological fluid in a magnetic field to achieve material removal on the workpiece surface through the shear force of abrasive particles in the magnetorheological fluid. It has the advantages of stable removal function, high polishing efficiency, and not easy to cause surface and sub-surface damage, thereby improving the processing accuracy of ceramic guide rails. At present, when circulating the circulating fluid, it mainly relies on the pump to provide power, but the power of the pump is a regular pulsation, which also causes the magnetorheological fluid to flow out of the nozzle in streams. The pulsation frequency of the magnetorheological fluid is consistent with the power frequency of the pump. In the actual processing process, the pulsation of the magnetorheological fluid will cause the flow of the magnetorheological fluid to be unstable, and the processing accuracy of magnetorheological polishing is difficult to further improve. Therefore, there is an urgent need for a device that can reduce the impact of pump pulsation on magnetorheological polishing. Summary of the invention

[0004] The purpose of the present invention is to provide a magnetorheological polishing machine to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The solution of the present invention to solve its technical problem is: A magnetorheological polishing machine comprises: a liquid storage tank; a processing mechanism, which comprises a first polishing component and a first liquid spraying component, wherein the first polishing component has a first polishing wheel movable in three-dimensional directions and a first magnetic field generator, wherein the first magnetic field generator forms a magnetic field on the periphery of the first polishing wheel, and the first liquid spraying component comprises a first delivery pump, a first disperser, a first nozzle and a first collector, wherein the input end of the first disperser is connected to the liquid storage tank through a pipeline, the output end of the first disperser is connected to the input end of the first nozzle through a pipeline, the output end of the first nozzle faces one side of the bottom of the first polishing wheel, the first delivery pump is arranged on the pipeline between the liquid storage tank and the first disperser, the first collector is located on the other side of the bottom of the first polishing wheel, and a first baffle is arranged in the first disperser, wherein the shape of the first baffle is a cone that gradually decreases toward the input end of the first disperser.

[0006] The technical solution has at least the following beneficial effects: the liquid storage tank is used to store magnetorheological fluid. When the workpiece needs to be polished, the first delivery pump delivers the magnetorheological fluid in the liquid storage tank to the first disperser through a pipeline. When the magnetorheological fluid flows into the first disperser, it is blocked by the first baffle plate. Since the shape of the first baffle plate is a cone that gradually decreases toward the input end of the first disperser, the magnetorheological fluid can be dispersed to the surroundings on the first baffle plate, and then converge to the first nozzle from the output end of the first disperser. The first nozzle sprays the magnetorheological fluid to the outer periphery of the first polishing wheel, and is adsorbed by the magnetic field on the first polishing wheel, forming a flexible polishing layer that fits tightly to the surface of the workpiece at the bottom of the first polishing wheel, which can produce a large polishing layer on the workpiece surface. The shear force is generated to achieve rapid polishing of the workpiece. When the magnetorheological fluid rotates and passes the other side of the bottom of the first polishing wheel, the magnetic field is weakened, and the adsorption capacity of the first polishing wheel to the magnetorheological fluid is weakened. The magnetorheological fluid is thrown out to the first collector under the centrifugal force of the first polishing wheel, and the magnetorheological fluid is collected by the first collector. In this way, the workpiece is polished using the magnetorheological fluid, which is particularly suitable for workpieces with high-precision processing requirements such as ceramic guide rails. When the magnetorheological fluid is transported, the first baffle plate in the first disperser is used to disperse the magnetorheological fluid to effectively reduce the pulsation phenomenon generated by the first delivery pump, so that the magnetorheological fluid forms a uniform, stable and flexible polishing layer between the first polishing wheel and the workpiece, effectively improving the processing accuracy of magnetorheological polishing.

[0007] As a further improvement of the above technical solution, the first disperser includes an outer sleeve, a base and a connecting rod, one end of the outer sleeve is connected to the output end of the first disperser through a pipeline, the base is connected to the other end of the outer sleeve, a liquid outlet channel extending along the length direction of the outer sleeve is provided in the base, the bottom side of the base is located at the end position of the liquid outlet channel and is connected to the input end of the first nozzle through a pipeline, the first baffle is located in the outer sleeve, there is a gap between the first baffle and the inner side wall of the outer sleeve, and the first baffle is connected to the base through the connecting rod. The top of the outer sleeve serves as the input end of the first nozzle, and the liquid outlet channel in the base serves as the output end of the first nozzle. The connecting rod fixes the first baffle plate on the base, so that a gap for the flow of magnetorheological fluid is formed between the first baffle plate and the inner side of the outer sleeve. When the magnetorheological fluid flows into the inner part of the outer sleeve, it is blocked by the first baffle plate. The magnetorheological fluid flows around along the conical first baffle plate to the gap position between the first baffle plate and the outer sleeve, and finally converges at the base and is discharged outward, thereby completing the first disperser to disperse and discharge the pulsating magnetorheological fluid.

[0008] As a further improvement of the above technical solution, the base is detachably connected to the outer sleeve. The first baffle, the first connecting rod and the base are connected as a whole, and the base can be connected to the bottom of the outer sleeve to achieve quick connection and assembly between the base and the outer sleeve, which is convenient for overall disassembly and maintenance, and improves the assembly efficiency of the first disperser.

[0009] As a further improvement of the above technical solution, a confluence groove is provided on the top side of the base, the side walls of the confluence groove extend obliquely from the periphery to the center of the confluence groove, and the liquid outlet channel is connected to the middle of the confluence groove. The confluence groove is inclined from the periphery to the center of the confluence groove, and also forms a conical structure, which is conducive to efficiently introducing the magnetorheological fluid on the base into the liquid outlet channel and discharging it, reducing the accumulation of magnetorheological fluid inside the outer sleeve.

[0010] As a further improvement of the above technical solution, the processing mechanism also includes a second polishing component and a second liquid spray component, the second polishing component has a second polishing wheel that can move in a three-dimensional direction and a second magnetic field generator, the second polishing wheel is located below the first polishing wheel, a processing area is formed between the second polishing wheel and the first polishing wheel, the second magnetic field generator forms a magnetic field on the periphery of the second polishing wheel, the second liquid spray component includes a second delivery pump, a second disperser, a second nozzle, a second collector and a third delivery pump, the input end of the second disperser is connected to the first collector through a pipeline, the output end of the second disperser is connected to the input end of the second nozzle through a pipeline, the output end of the second nozzle faces the top side of the second polishing wheel, the second delivery pump is arranged on the pipeline between the first collector and the second disperser, the second collector is located on the other side of the bottom of the second polishing wheel, a second baffle is arranged in the second disperser, and the shape of the second baffle is a cone that gradually decreases toward the input end of the second disperser, the second collector is connected to the liquid storage tank through a pipeline, and the third delivery pump is arranged on the pipeline between the second collector and the liquid storage tank. A second polishing wheel for polishing the bottom side of the workpiece is also provided on the bottom side of the workpiece. The magnetorheological fluid collected by the first collector is transported to the second disperser by the second delivery pump. The second delivery pump can enhance the absorption effect of the first collector on the magnetorheological fluid, and better promote the circulation of the magnetorheological fluid. The magnetorheological fluid flowing into the second disperser can be dispersed again by the flow blocking of the second baffle, effectively reducing the influence of the pulsation phenomenon generated by the second delivery pump during transportation. The second nozzle sprays the magnetorheological fluid to the outer periphery of the second polishing wheel, and is adsorbed by the magnetic field on the second polishing wheel. At the top of the second polishing wheel A flexible polishing layer that fits tightly to the surface of the workpiece is formed, which can generate a large shear force on the surface of the workpiece, thereby realizing rapid polishing of the workpiece. When the magnetorheological fluid rotates through the other side of the second polishing wheel, the magnetic field weakens, and the adsorption capacity of the second polishing wheel for the magnetorheological fluid weakens. Under the centrifugal force of the second polishing wheel, the magnetorheological fluid is thrown out to the second collector, and the magnetorheological fluid is collected by the second collector and transported to the liquid storage tank for circulation by the third delivery pump. In this way, the workpiece can be polished simultaneously from top to bottom in one circulation of the magnetorheological fluid, which greatly improves the processing efficiency of the workpiece.

[0011] As a further improvement of the above technical solution, the processing mechanism also includes a third polishing component and a third spray component. The third polishing component has a third polishing wheel that can move in three-dimensional directions and a third magnetic field generator. The third magnetic field generator forms a magnetic field on the periphery of the third polishing wheel. The third polishing wheel is located on the left or right side of the processing area. The third spray component includes a fourth delivery pump, a third disperser, a third nozzle and a third collector. The input end of the third disperser is connected to the liquid storage tank through a pipeline, and the output end of the third disperser is connected to the input end of the third nozzle through a pipeline. The output end of the third nozzle faces the top side of the third polishing wheel close to the processing area. The fourth delivery pump is arranged on the pipeline between the liquid storage tank and the third disperser. The third collector is located on the bottom side of the third polishing wheel close to the processing area. A third baffle is arranged in the third disperser, and the shape of the third baffle is a cone that gradually decreases toward the input end of the third disperser. A third polishing wheel for polishing is arranged on the left or right side of the workpiece. The fourth delivery pump delivers the magnetorheological fluid in the liquid storage tank to the third disperser through a pipeline. When the magnetorheological fluid flows into the third disperser, it is blocked by the third baffle. Since the shape of the third baffle is a cone that gradually decreases toward the input end of the third disperser, the magnetorheological fluid can be dispersed to the surroundings on the third baffle, and then converged to the third nozzle from the output end of the third disperser. The third nozzle sprays the magnetorheological fluid to the outer periphery of the third polishing wheel, and is adsorbed by the magnetic field on the third polishing wheel. A flexible polishing layer that fits closely to the surface of the workpiece is formed at one end of the third polishing wheel close to the processing area, which can generate a large shear force on the surface of the workpiece, thereby realizing rapid polishing of the workpiece. When the magnetorheological fluid rotates and passes the other side of the bottom of the third polishing wheel, the magnetic field weakens, and the adsorption capacity of the third polishing wheel for the magnetorheological fluid weakens. Under the centrifugal force of the third polishing wheel, the magnetorheological fluid is thrown out to the third collector, and the magnetorheological fluid is collected by the third collector. In this way, the workpiece can be processed on three sides at the same time, and the polishing efficiency of the workpiece is further improved.

[0012] As a further improvement of the above technical solution, the processing mechanism also includes a fourth polishing component and a fourth liquid spray component. The fourth polishing component has a fourth polishing wheel and a fourth magnetic field generator that can move in a three-dimensional direction. The third polishing wheel and the fourth polishing wheel are respectively located on the left and right sides of the processing area. The fourth magnetic field generator forms a magnetic field on the periphery of the fourth polishing wheel. The fourth liquid spray component includes a fifth delivery pump, a fourth disperser, a fourth nozzle, a fourth collector and a sixth delivery pump. The input end of the fourth disperser is connected to the third collector through a pipeline, the output end of the fourth disperser is connected to the input end of the fourth nozzle through a pipeline, and the output end of the fourth nozzle faces the top side of the fourth polishing wheel. The fifth delivery pump is arranged on the pipeline between the first collector and the fourth disperser. The fourth collector is located on the other side of the bottom of the fourth polishing wheel. A fourth baffle is arranged in the fourth disperser. The shape of the fourth baffle is a cone that gradually shrinks toward the input end of the fourth disperser. The fourth collector is connected to the liquid storage tank through a pipeline, and the sixth delivery pump is arranged on the pipeline between the fourth collector and the liquid storage tank. A fourth polishing wheel for polishing the bottom side of the workpiece is also provided on the bottom side of the workpiece. The magnetorheological fluid collected by the second collector is transported to the fourth disperser by the fourth delivery pump. The fifth delivery pump can enhance the absorption effect of the second collector on the magnetorheological fluid, and better promote the circulation of the magnetorheological fluid. The magnetorheological fluid flowing into the fourth disperser can be dispersed again by the flow blocking of the fourth baffle, effectively reducing the influence of the pulsation phenomenon generated by the fifth delivery pump during transportation. The fourth nozzle sprays the magnetorheological fluid to the outer periphery of the fourth polishing wheel, which is adsorbed by the magnetic field on the fourth polishing wheel, and forms a close fit with the surface of the workpiece at the top of the fourth polishing wheel. The combined flexible polishing layer can generate a large shear force on the surface of the workpiece, thereby realizing rapid polishing of the workpiece. When the magnetorheological fluid rotates through the other side of the fourth polishing wheel, the magnetic field weakens, and the adsorption capacity of the fourth polishing wheel to the magnetorheological fluid weakens. Under the centrifugal force of the fourth polishing wheel, the magnetorheological fluid is thrown out to the fourth collector, and the magnetorheological fluid is collected by the fourth collector and transported to the liquid storage tank for circulation by the sixth delivery pump. In this way, in one circulation of the magnetorheological fluid, the left and right sides of the workpiece can be polished simultaneously. For example, the four sides of the ceramic guide rail can be processed simultaneously, further improving the processing efficiency of the workpiece.

[0013] As a further improvement of the above technical solution, a stirring paddle is rotatably connected in the liquid storage tank, a driving motor is arranged outside the liquid storage tank, the driving motor is drivingly connected to the stirring paddle, and the driving motor can drive the stirring paddle to rotate. The driving motor drives the stirring paddle to rotate in the liquid storage tank, which can keep the magnetorheological fluid agitated, thereby better maintaining the consistency of the magnetorheological fluid.

[0014] As a further improvement of the above technical solution, the first polishing assembly includes a mechanical arm, and the first polishing wheel is connected to the movable end of the mechanical arm. The mechanical arm provides a driving force for the first polishing wheel to move in a three-dimensional direction, so that the first polishing wheel approaches or moves away from the workpiece.

[0015] As a further improvement of the above technical solution, the first nozzle and the first collector are both connected to the movable end of the mechanical arm. The first nozzle and the first collector can move synchronously with the movable end of the mechanical arm, so as to remain located on both sides of the first polishing wheel, thereby improving the convenience of adjusting the position of the first polishing wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the explosion structure of the first disperser of the present invention.

[0019] Figure 3 It is a schematic diagram of processing a workpiece by the first polishing wheel, the second polishing wheel, the third polishing wheel and the fourth polishing wheel of the present invention.

[0020] In the accompanying drawings: 1-liquid storage tank, 21-first polishing wheel, 221-first delivery pump, 222-first disperser, 2221-outer sleeve, 2222-base, 2223-connecting rod, 2224-convective groove, 2225-first baffle plate, 223-first nozzle, 224-first collector, 231-second polishing wheel, 232-second delivery pump, 233-second disperser, 234-second nozzle, 235-second collector, 236-third delivery pump, 24-third polishing wheel, 25-fourth polishing wheel. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0022] Reference Figure 1 , a magnetorheological polishing machine, comprising: a liquid storage tank 1; a processing mechanism, which includes a first polishing component and a first liquid spraying component, the first polishing component has a first polishing wheel 21 that can move in a three-dimensional direction and a first magnetic field generator, the first magnetic field generator forms a magnetic field on the periphery of the first polishing wheel 21, the first liquid spraying component includes a first delivery pump 221, a first disperser 222, a first nozzle 223 and a first collector 224, the input end of the first disperser 222 is connected to the liquid storage tank 1 through a pipeline, the output end of the first disperser 222 is connected to the input end of the first nozzle 223 through a pipeline, the output end of the first nozzle 223 faces the bottom side of the first polishing wheel 21, the first delivery pump 221 is arranged on the pipeline between the liquid storage tank 1 and the first disperser 222, the first collector 224 is located on the other side of the bottom of the first polishing wheel 21, and a first baffle 2225 is arranged in the first disperser 222, and the shape of the first baffle 2225 is a cone that gradually shrinks toward the input end of the first disperser 222.

[0023] In this magnetorheological polishing machine, the liquid storage tank 1 is used to store magnetorheological fluid. When the workpiece needs to be polished, the first delivery pump 221 delivers the magnetorheological fluid in the liquid storage tank 1 to the first disperser 222 through a pipeline. When the magnetorheological fluid flows into the first disperser 222, it is blocked by the first baffle plate 2225. Since the shape of the first baffle plate 2225 is a cone that gradually decreases toward the input end of the first disperser 222, the magnetorheological fluid can be dispersed to the surroundings on the first baffle plate 2225, and then converge to the first nozzle 223 from the output end of the first disperser 222. The first nozzle 223 sprays the magnetorheological fluid to the outer periphery of the first polishing wheel 21, and is adsorbed by the magnetic field on the first polishing wheel 21, forming a flexible polishing layer that fits tightly to the surface of the workpiece at the bottom of the first polishing wheel 21, which can be used on the surface of the workpiece. The magnetorheological fluid is then thrown out to the first collector 224 under the centrifugal force of the first polishing wheel 21, and the magnetorheological fluid is collected by the first collector 224. The magnetorheological fluid is used to polish the workpiece, which is particularly suitable for workpieces with high-precision processing requirements such as ceramic guide rails. When the magnetorheological fluid is conveyed, the first baffle plate 2225 in the first disperser 222 is used to disperse the magnetorheological fluid, which effectively reduces the pulsation phenomenon generated by the first conveying pump 221, so that the magnetorheological fluid forms a uniform, stable and flexible polishing layer between the first polishing wheel 21 and the workpiece, thereby effectively improving the processing accuracy of magnetorheological polishing.

[0024] Regarding the specific structural form of the first baffle plate 2225 in the first diffuser 222, in this embodiment, as shown in FIG. Figure 2As shown, the first disperser 222 includes an outer sleeve 2221, a base 2222 and a connecting rod 2223, one end of the outer sleeve 2221 is connected to the output end of the first disperser 222 through a pipeline, the base 2222 is connected to the other end of the outer sleeve 2221, a liquid outlet channel extending along the length direction of the outer sleeve 2221 is provided in the base 2222, the bottom side of the base 2222 is located at the end position of the liquid outlet channel and is connected to the input end of the first nozzle 223 through a pipeline, the first baffle plate 2225 is located in the outer sleeve 2221, there is a gap between the first baffle plate 2225 and the inner side wall of the outer sleeve 2221, and the first baffle plate 2225 is connected to the base 2222 through the connecting rod 2223. The top of the outer sleeve 2221 serves as the input end of the first nozzle 223, and the liquid outlet channel in the base 2222 serves as the output end of the first nozzle 223. The connecting rod 2223 fixes the first baffle plate 2225 on the base 2222, so that a gap for the flow of magnetorheological fluid is formed between the first baffle plate 2225 and the inner side of the outer sleeve 2221. When the magnetorheological fluid flows into the inner part of the outer sleeve 2221, it is blocked by the first baffle plate 2225. The magnetorheological fluid flows around along the conical first baffle plate 2225 to the gap position between the first baffle plate 2225 and the outer sleeve 2221, and finally converges at the base 2222 and is discharged outward. In this way, the first disperser 222 completes the flow blocking, dispersion and discharge of the pulsating magnetorheological fluid.

[0025] In order to facilitate maintenance of the interior of the outer sleeve 2221, in this embodiment, the base 2222 is detachably connected to the outer sleeve 2221, for example, the base 2222 can be connected to the outer sleeve 2221 by threads. The first baffle plate 2225, the first connecting rod 2223 and the base 2222 are connected as a whole, and the base 2222 can be connected to the bottom of the outer sleeve 2221 to achieve quick connection and assembly of the base 2222 and the outer sleeve 2221, which is convenient for overall disassembly and maintenance, and improves the assembly efficiency of the first disperser 222.

[0026] Furthermore, a confluence groove 2224 is provided on the top side of the base 2222, and the side walls of the confluence groove 2224 extend obliquely from the periphery toward the center of the confluence groove 2224, and the liquid outlet channel is connected to the middle of the confluence groove 2224. The confluence groove 2224 is inclined from the periphery toward the center of the confluence groove 2224, and also forms a conical structure, which is conducive to efficiently introducing the magnetorheological fluid on the base 2222 into the liquid outlet channel and discharging it, thereby reducing the accumulation of the magnetorheological fluid inside the outer sleeve 2221.

[0027] In the above embodiment, the processing mechanism can only provide single-sided polishing processing, while in the present embodiment, the processing mechanism further includes a second polishing assembly and a second liquid spray assembly, the second polishing assembly has a second polishing wheel 231 movable in three dimensions and a second magnetic field generator, the second polishing wheel 231 is located below the first polishing wheel 21, a processing area is formed between the second polishing wheel 231 and the first polishing wheel 21, the second magnetic field generator forms a magnetic field on the periphery of the second polishing wheel 231, the second liquid spray assembly includes a second delivery pump 232, a second disperser 233, a second nozzle 234, a second collector 235 and a third delivery pump 236, the input end of the second disperser 233 is connected to the first collector 235 through a pipeline. The output end of the second disperser 233 is connected to the input end of the second nozzle 234 through a pipeline, and the output end of the second nozzle 234 faces the top side of the second polishing wheel 231. The second delivery pump 232 is arranged on the pipeline between the first collector 224 and the second disperser 233. The second collector 235 is located on the other side of the bottom of the second polishing wheel 231. A second baffle is arranged in the second disperser 233, and the shape of the second baffle is a cone that gradually decreases toward the input end of the second disperser 233. The second collector 235 is connected to the liquid storage tank 1 through a pipeline, and the third delivery pump 236 is arranged on the pipeline between the second collector 235 and the liquid storage tank 1. A second polishing wheel 231 is provided on the bottom side of the workpiece for polishing the bottom side of the workpiece. The magnetorheological fluid collected by the first collector 224 is transported to the second disperser 233 by the second delivery pump 232. The second delivery pump 232 can enhance the absorption effect of the first collector 224 on the magnetorheological fluid, and better promote the circulation of the magnetorheological fluid. The magnetorheological fluid flowing into the second disperser 233 can be dispersed again by the flow blocking of the second baffle, effectively reducing the influence of the pulsation phenomenon generated by the second delivery pump 232 during transportation. The second nozzle 234 sprays the magnetorheological fluid to the outer periphery of the second polishing wheel 231, and is adsorbed by the magnetic field on the second polishing wheel 231. A flexible polishing layer that fits tightly to the surface of the workpiece is formed on the top of the polishing wheel 231, which can generate a large shear force on the surface of the workpiece, thereby realizing rapid polishing of the workpiece. When the magnetorheological fluid rotates through the other side of the second polishing wheel 231, the magnetic field weakens, and the adsorption capacity of the second polishing wheel 231 for the magnetorheological fluid weakens. Under the centrifugal force of the second polishing wheel 231, the magnetorheological fluid is thrown out to the second collector 235, and the magnetorheological fluid is collected by the second collector 235 and transported to the liquid storage tank 1 for circulation by the third delivery pump 236. In this way, the workpiece can be polished simultaneously from top to bottom in one circulation of the magnetorheological fluid, thereby greatly improving the processing efficiency of the workpiece.

[0028] In this embodiment, the processing mechanism can realize three-side processing. The processing mechanism also includes a third polishing component and a third liquid spray component. The third polishing component has a third polishing wheel 24 that can move in three-dimensional directions and a third magnetic field generator. The third magnetic field generator forms a magnetic field on the periphery of the third polishing wheel 24. The third polishing wheel 24 is located on the left or right side of the processing area. The third liquid spray component includes a fourth delivery pump, a third disperser, a third nozzle and a third collector. The input end of the third disperser is connected to the liquid storage tank 1 through a pipeline, and the output end of the third disperser is connected to the input end of the third nozzle through a pipeline. The output end of the third nozzle faces the top side of the third polishing wheel 24 close to the processing area. The fourth delivery pump is arranged on the pipeline between the liquid storage tank 1 and the third disperser. The third collector is located on the bottom side of the third polishing wheel 24 close to the processing area. A third baffle is arranged in the third disperser, and the shape of the third baffle is a cone that gradually decreases toward the input end of the third disperser. A third polishing wheel 24 for polishing is arranged on the left or right side of the workpiece. The fourth delivery pump delivers the magnetorheological fluid in the liquid storage tank 1 to the third disperser through a pipeline. When the magnetorheological fluid flows into the third disperser, it is blocked by the third baffle plate. Since the shape of the third baffle plate is a cone that gradually decreases toward the input end of the third disperser, the magnetorheological fluid can be dispersed to the surroundings on the third baffle plate, and then converged to the third nozzle from the output end of the third disperser. The third nozzle sprays the magnetorheological fluid to the outer periphery of the third polishing wheel 24, and is blocked by the magnetic field on the third polishing wheel 24. Field adsorption, a flexible polishing layer that fits tightly to the surface of the workpiece is formed at one end of the third polishing wheel 24 close to the processing area, which can generate a large shear force on the surface of the workpiece, thereby realizing rapid polishing of the workpiece. When the magnetorheological fluid rotates through the other side of the bottom of the third polishing wheel 24, the magnetic field weakens, and the adsorption capacity of the third polishing wheel 24 for the magnetorheological fluid weakens. Under the centrifugal force of the third polishing wheel 24, the magnetorheological fluid is thrown out to the third collector, and the magnetorheological fluid is collected by the third collector. In this way, the workpiece can be processed on three sides at the same time, further improving the polishing efficiency of the workpiece.

[0029] In this embodiment, the processing mechanism can realize simultaneous processing on four sides, such as Figure 3As shown, the processing mechanism also includes a fourth polishing component and a fourth liquid spraying component. The fourth polishing component has a fourth polishing wheel 25 that can move in a three-dimensional direction and a fourth magnetic field generator. The third polishing wheel 24 and the fourth polishing wheel 25 are respectively located on the left and right sides of the processing area. The fourth magnetic field generator forms a magnetic field on the periphery of the fourth polishing wheel 25. The fourth liquid spraying component includes a fifth delivery pump, a fourth disperser, a fourth nozzle, a fourth collector and a sixth delivery pump. The input end of the fourth disperser is connected to the third collector through a pipeline, and the output end of the fourth disperser is connected to the third collector through a pipeline. A pipeline is connected to the input end of the fourth nozzle, and the output end of the fourth nozzle is toward the top side of the fourth polishing wheel 25. The fifth delivery pump is arranged on the pipeline between the first collector 224 and the fourth disperser. The fourth collector is located on the other side of the bottom of the fourth polishing wheel 25. A fourth baffle is arranged in the fourth disperser, and the shape of the fourth baffle is a cone that gradually decreases toward the input end of the fourth disperser. The fourth collector is connected to the liquid storage tank 1 through a pipeline, and the sixth delivery pump is arranged on the pipeline between the fourth collector and the liquid storage tank 1. A fourth polishing wheel 25 is provided on the bottom side of the workpiece for polishing the bottom side of the workpiece. The magnetorheological fluid collected by the second collector 235 is transported to the fourth disperser by the fourth delivery pump. The fifth delivery pump can enhance the absorption effect of the second collector 235 on the magnetorheological fluid, and better promote the circulation of the magnetorheological fluid. The magnetorheological fluid flowing into the fourth disperser can be dispersed again by the flow blocking of the fourth baffle, effectively reducing the influence of the pulsation phenomenon generated by the fifth delivery pump during transportation. The fourth nozzle sprays the magnetorheological fluid to the outer periphery of the fourth polishing wheel 25, and is adsorbed by the magnetic field on the fourth polishing wheel 25, forming a magnetic field on the top of the fourth polishing wheel 25 that is consistent with the surface of the workpiece. The flexible polishing layer that fits tightly on the surface can generate a large shear force on the surface of the workpiece, thereby realizing rapid polishing of the workpiece. When the magnetorheological fluid rotates through the other side of the fourth polishing wheel 25, the magnetic field weakens, and the adsorption capacity of the fourth polishing wheel 25 for the magnetorheological fluid weakens. Under the centrifugal force of the fourth polishing wheel 25, the magnetorheological fluid is thrown out to the fourth collector, and the magnetorheological fluid is collected by the fourth collector and transported to the liquid storage tank 1 for circulation by the sixth delivery pump. In this way, in one circulation of the magnetorheological fluid, the left and right sides of the workpiece can be polished simultaneously, for example, the four sides of the ceramic guide rail can be processed simultaneously, further improving the processing efficiency of the workpiece.

[0030] In practical applications, the structures of the second disperser 233, the third disperser and the fourth disperser are respectively the same as the structure of the first disperser 222. The first collector 224 is a box structure, and is provided with a notch at a position facing the first polishing wheel 21 and contacting the workpiece, and the magnetorheological fluid can enter the box from the notch, and the structures of the second collector 235, the third collector and the fourth collector are also the same.

[0031] In some embodiments, a stirring paddle is rotatably connected in the liquid storage tank 1, and a driving motor is disposed outside the liquid storage tank 1. The driving motor is drivingly connected to the stirring paddle, and the driving motor can drive the stirring paddle to rotate. The driving motor drives the stirring paddle to rotate in the liquid storage tank 1, which can keep the magnetorheological fluid agitated, thereby better maintaining the consistency of the magnetorheological fluid.

[0032] The first polishing assembly can be composed of a plurality of linear driving members arranged and connected in three-dimensional directions, so as to drive the first polishing wheel 21 to move in three-dimensional directions respectively. In this embodiment, the first polishing assembly includes a mechanical arm, and the first polishing wheel 21 is connected to the movable end of the mechanical arm. The mechanical arm provides a driving force for the first polishing wheel 21 to move in three-dimensional directions, so that the first polishing wheel 21 approaches or moves away from the workpiece. For the second polishing wheel 231, the third polishing wheel 24 and the fourth polishing wheel 25, they can also be driven by multiple independent mechanical arms to move respectively, so as to realize independent control processing on multiple sides of the workpiece.

[0033] The first nozzle 223 and the first collector 224 can be fixedly arranged, and only the position of the first polishing wheel 21 is adjusted at this time. When the first polishing wheel 21 needs to be moved significantly, the first nozzle 223 and the first collector 224 can be directly fixedly arranged relative to the first polishing wheel 21. Specifically, the first nozzle 223 and the first collector 224 are both connected to the movable end of the mechanical arm. The first nozzle 223 and the first collector 224 can move synchronously with the movable end of the mechanical arm, so as to remain located on both sides of the first polishing wheel 21, thereby improving the convenience of adjusting the position of the first polishing wheel 21.

[0034] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A magnetorheological polishing machine, characterized in that: include: Liquid storage tank(1); A processing mechanism, comprising a first polishing assembly and a first liquid spraying assembly, wherein the first polishing assembly comprises a first polishing wheel (21) movable in three dimensions and a first magnetic field generator, wherein the first magnetic field generator forms a magnetic field around the periphery of the first polishing wheel (21), and the first liquid spraying assembly comprises a first delivery pump (221), a first disperser (222), a first nozzle (223) and a first collector (224), wherein the input end of the first disperser (222) is connected to the liquid storage tank (1) via a pipeline, and the output end of the first disperser (222) is connected to the liquid storage tank (1) via a pipeline. At the input end of the first nozzle (223), the output end of the first nozzle (223) faces the bottom side of the first polishing wheel (21), the first delivery pump (221) is arranged on the pipeline between the liquid storage tank (1) and the first disperser (222), the first collector (224) is located on the other side of the bottom of the first polishing wheel (21), and a first baffle plate (2225) is arranged in the first disperser (222), and the shape of the first baffle plate (2225) is a cone that gradually decreases toward the input end of the first disperser (222).

2. A magnetorheological polishing machine according to claim 1, characterized in that: The first disperser (222) comprises an outer sleeve (2221), a base (2222) and a connecting rod (2223); one end of the outer sleeve (2221) is connected to the output end of the first disperser (222) via a pipeline; the base (2222) is connected to the other end of the outer sleeve (2221); a liquid outlet channel extending along the length direction of the outer sleeve (2221) is arranged in the base (2222); the bottom side of the base (2222) is located at the end position of the liquid outlet channel and is connected to the input end of the first nozzle (223) via a pipeline; the first baffle plate (2225) is located in the outer sleeve (2221); a gap is provided between the first baffle plate (2225) and the inner side wall of the outer sleeve (2221); the first baffle plate (2225) is connected to the base (2222) via the connecting rod (2223).

3. A magnetorheological polishing machine according to claim 2, characterized in that: The base (2222) is detachably connected to the outer sleeve (2221).

4. A magnetorheological polishing machine according to claim 2, characterized in that: A confluence groove (2224) is provided on the top side of the base (2222), the side walls of the confluence groove (2224) extend obliquely from all sides toward the center of the confluence groove (2224), and the liquid outlet channel is connected to the middle of the confluence groove (2224).

5. A magnetorheological polishing machine according to claim 1, characterized in that: The processing mechanism further comprises a second polishing assembly and a second liquid spraying assembly. The second polishing assembly comprises a second polishing wheel (231) movable in three dimensions and a second magnetic field generator. The second polishing wheel (231) is located below the first polishing wheel (21). A processing area is formed between the second polishing wheel (231) and the first polishing wheel (21). The second magnetic field generator forms a magnetic field around the periphery of the second polishing wheel (231). The second liquid spraying assembly comprises a second delivery pump (232), a second disperser (233), a second nozzle (234), a second collector (235) and a third delivery pump (236). The input end of the second disperser (233) is connected to the first collector (224) via a pipeline. The output end of the second disperser (233) is connected to the first collector (224) via a pipeline. The outlet end is connected to the input end of the second nozzle (234) through a pipeline, the output end of the second nozzle (234) faces the top side of the second polishing wheel (231), the second delivery pump (232) is arranged on the pipeline between the first collector (224) and the second disperser (233), the second collector (235) is located on the other side of the bottom of the second polishing wheel (231), a second baffle plate is arranged in the second disperser (233), and the shape of the second baffle plate is a cone that gradually decreases toward the input end of the second disperser (233), the second collector (235) is connected to the liquid storage tank (1) through a pipeline, and the third delivery pump (236) is arranged on the pipeline between the second collector (235) and the liquid storage tank (1).

6. A magnetorheological polishing machine according to claim 5, characterized in that: The processing mechanism further comprises a third polishing assembly and a third liquid spraying assembly. The third polishing assembly comprises a third polishing wheel (24) movable in three-dimensional directions and a third magnetic field generator. The third magnetic field generator forms a magnetic field on the periphery of the third polishing wheel (24). The third polishing wheel (24) is located on the left or right side of the processing area. The third liquid spraying assembly comprises a fourth delivery pump, a third disperser, a third nozzle and a third collector. The input end of the third disperser is connected to the liquid storage tank (1) through a pipeline. The output end of the third disperser is connected to the input end of the third nozzle through a pipeline. The output end of the third nozzle faces the top side of the third polishing wheel (24) close to the processing area. The fourth delivery pump is arranged on the pipeline between the liquid storage tank (1) and the third disperser. The third collector is located on the bottom side of the third polishing wheel (24) close to the processing area. A third baffle is arranged in the third disperser. The shape of the third baffle is a cone that gradually decreases toward the input end of the third disperser.

7. A magnetorheological polishing machine according to claim 6, characterized in that: The processing mechanism further comprises a fourth polishing assembly and a fourth liquid spraying assembly, wherein the fourth polishing assembly comprises a fourth polishing wheel (25) movable in three-dimensional directions and a fourth magnetic field generator, wherein the third polishing wheel (24) and the fourth polishing wheel (25) are respectively located on the left and right sides of the processing area, and the fourth magnetic field generator forms a magnetic field around the periphery of the fourth polishing wheel (25), and the fourth liquid spraying assembly comprises a fifth delivery pump, a fourth disperser, a fourth nozzle, a fourth collector and a sixth delivery pump, wherein the input end of the fourth disperser is connected to the third collector via a pipeline, and the output end of the fourth disperser is connected to the third collector via a pipeline. The fourth nozzle is connected to the input end of the fourth nozzle, the output end of the fourth nozzle is toward the top side of the fourth polishing wheel (25), the fifth delivery pump is arranged on the pipeline between the first collector (224) and the fourth disperser, the fourth collector is located on the other side of the bottom of the fourth polishing wheel (25), a fourth baffle is arranged in the fourth disperser, and the shape of the fourth baffle is a cone that gradually decreases toward the input end of the fourth disperser, the fourth collector is connected to the liquid storage tank (1) through a pipeline, and the sixth delivery pump is arranged on the pipeline between the fourth collector and the liquid storage tank (1).

8. A magnetorheological polishing machine according to claim 1, characterized in that: A stirring paddle is rotatably connected inside the liquid storage tank (1), and a driving motor is arranged outside the liquid storage tank (1). The driving motor is rotatably connected to the stirring paddle, and the driving motor can drive the stirring paddle to rotate.

9. A magnetorheological polishing machine according to claim 1, characterized in that: The first polishing assembly comprises a mechanical arm, and the first polishing wheel (21) is connected to the movable end of the mechanical arm.

10. A magnetorheological polishing machine according to claim 9, characterized in that: The first nozzle (223) and the first collector (224) are both connected to the movable end of the mechanical arm.

Images