CN114654376B - Magnetorheological polishing device with self-repairing grinding head - Google Patents

Magnetorheological polishing device with self-repairing grinding head Download PDF

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Publication number
CN114654376B
CN114654376B CN202210242448.9A CN202210242448A CN114654376B CN 114654376 B CN114654376 B CN 114654376B CN 202210242448 A CN202210242448 A CN 202210242448A CN 114654376 B CN114654376 B CN 114654376B
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China
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connecting piece
bolt
gear shaft
permanent magnet
bearing
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CN202210242448.9A
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Chinese (zh)
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CN114654376A (en
Inventor
周崇秋
李林峰
高春甫
贺新升
鄂世举
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Zhejiang Normal University CJNU
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Zhejiang Normal University CJNU
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • B24B31/112—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using magnetically consolidated grinding powder, moved relatively to the workpiece under the influence of pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/005—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes using a magnetic polishing agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention relates to a magnetorheological polishing device with a self-repairing grinding head. The device mainly comprises a shell, a foot cup, a frame, a connecting piece, a ball screw module, an instrument operation panel, a clamp mounting platform, a vacuum adsorption platform, a coupler, a synchronous belt pulley, a stepping motor, a bolt, a nut, a deep groove ball bearing, a tapered roller bearing, a shaft, a bearing end cover, a gear shaft, an inner gear ring and a permanent magnet. The magnetorheological polishing device with the self-repairing grinding head can solve the problems of high cost, complex operation, low efficiency, poor polishing quality, pollution and the like in the traditional polishing process and the problem of updating the flexible grinding head in the traditional magnetorheological polishing device, and has the advantages of simple structure, low manufacturing cost, high device reliability and the like.

Description

Magnetorheological polishing device with self-repairing grinding head
Technical Field
The invention relates to the field of polishing, in particular to a magnetorheological polishing device with a self-repairing grinding head.
Background
Polishing refers to a processing method for reducing the surface roughness of a workpiece by utilizing the actions of machinery, chemistry or electrochemistry and the like so as to obtain a bright (part is also used for eliminating gloss) and flat surface. Polishing is a traditional and necessary manufacturing process, and polishing processes are divided into a plurality of types, such as mechanical polishing, electrolytic polishing, chemical polishing, magnetorheological polishing and the like. The mechanical polishing has low cost and simple operation, but has low efficiency, is easy to cause uneven polishing surface, has difficult grasping of polishing time, and is suitable for small-area surface treatment. The electrolytic polishing has the advantages of being capable of polishing hard materials, soft materials, thin walls, parts and products with complex shapes and tiny shapes which are difficult to polish mechanically, short in polishing time, high in production efficiency, low in cost, capable of increasing corrosion resistance of the product surface, free of metal surface deformation and the like, but complex in pre-polishing treatment, poor in universality of electrolyte, short in service life, strong in corrosiveness and difficult to treat. The chemical polishing equipment is simple, can treat parts with complex shapes, has inferior polishing quality compared with electrolytic polishing, has short service life of the used polishing solution, is difficult to adjust and regenerate, and has serious environmental pollution because nitric acid emits a large amount of yellow brown harmful gas in the chemical polishing operation process.
The magnetorheological polishing utilizes the rapid relative movement between a flexible small grinding head with a plastic sticking behavior formed by the rheology of the magnetorheological polishing liquid in a gradient magnetic field and a workpiece, so that the surface of the workpiece is subjected to a large shearing force, and the material on the surface of the workpiece is removed. Magneto-rheological polishing has been a research hot spot in recent years because of the advantages of low cost, simple operation, high efficiency, good polishing quality, no pollution and the like compared with the traditional polishing process. However, the current magnetorheological polishing device generally has the problem of updating a flexible small grinding head, and if the flexible grinding head polishes for a long time at fixed points, the microstructure of the grinding head can deform, so that the polishing quality can be reduced. In view of the above polishing manner and the shortcomings thereof, the invention provides a magnetorheological polishing device with a self-repairing grinding head, which is improved aiming at the existing magnetorheological polishing device.
Disclosure of Invention
The invention aims to provide a magnetorheological polishing device with a self-repairing grinding head, which is used for solving the problems of high cost, complex operation, low efficiency, poor polishing quality, pollution and the like in the traditional polishing process and the problem of updating a flexible grinding head in the magnetorheological polishing device.
In order to effectively solve the technical problems, the invention is realized in the following way: a magnetorheological polishing device with a self-repairing grinding head comprises a foot cup, an instrument operation panel, a rack, a ball screw module, a fifth connecting piece, a motor, a synchronous belt wheel, a transmission device, a coupler, a third gear shaft, a polishing head, a vacuum adsorption platform and a clamp mounting platform; the foot cup is arranged on the frame; the fifth connecting piece is fixed on the ball screw module; the ball screw module is fixed on the frame; the clamp mounting platform is mounted on the frame; the instrument operation panel is arranged on the clamp installation platform; the vacuum adsorption platform is arranged on the clamp mounting platform; the motor is fixed on the fifth connecting piece; the transmission device is fixed on the fifth connecting piece; the synchronous belt wheel is fixed on the motor and the transmission device and can transmit torque between the motor and the transmission device through the synchronous belt; the polishing head is connected with the transmission device through a coupler; the third gear shaft is connected with the transmission device through a coupler and meshed with an external gear on a fourth bearing end cover in the polishing head;
the transmission device mainly comprises a second gear shaft, a first bolt, a first bearing end cover, a second bolt, a shell, a first deep groove ball bearing, a third bolt, a first tapered roller bearing, a second deep groove ball bearing, a third deep groove ball bearing, a first baffle, a fourth bolt, a first gear shaft, a second bearing end cover, a support frame, a fifth bolt, a nut, an inner gear ring, a sixth bolt, a second tapered roller bearing, a second baffle, a fourth deep groove ball bearing, a third bearing end cover and a seventh bolt; the shell is connected with the second baffle through a second bolt; the first bearing end cover, the second bearing end cover and the third bearing end cover are respectively connected with the support frame through a first bolt, a fourth bolt and a seventh bolt; the support frame is connected with the first baffle through a fifth bolt and a nut; the inner gear ring is connected with the shell through a third bolt and a sixth bolt; the first tapered roller bearing and the second tapered roller bearing are assembled on the shell, so that the shell is matched with the other three: the first baffle plate, the second baffle plate and the supporting frame can move relatively; the gears on the second gear shaft can be regarded as planetary gears, and two ends of the gears are matched with the first deep groove ball bearing and the second deep groove ball bearing, so that the second gear shaft and the support frame can move relatively; the gear on the first gear shaft can be regarded as a sun gear, and two ends of the gear are matched with the third deep groove ball bearing and the fourth deep groove ball bearing, so that the first gear shaft and the support frame can move relatively;
the polishing head mainly comprises a cylindrical shell, a first permanent magnet, a second permanent magnet, a first connecting piece, a second connecting piece, a third connecting piece, an eighth bolt, a fifth deep groove ball bearing, a sixth deep groove ball bearing, a fourth connecting piece, a ninth bolt, a fourth bearing end cover and a shaft; the first permanent magnet and the second permanent magnet are connected with the first connecting piece, the second connecting piece and the third connecting piece; the first connecting piece, the second connecting piece and the third connecting piece are spliced with each other and fastened through an eighth bolt; the shaft is connected with a third connecting piece through threads; the fifth deep groove ball bearing and the sixth deep groove ball bearing are assembled on the shaft, so that the shaft, the first connecting piece, the second connecting piece, the third connecting piece, the first permanent magnet, the second permanent magnet and other three parts are formed: the fourth bearing end cover, the fourth connecting piece and the cylindrical shell can move relatively; the fourth bearing end cover is connected with a fourth connecting piece through a ninth bolt; the cylindrical housing is coupled to the fourth connector by threads.
The magnetorheological polishing device with the self-repairing grinding head comprises a grinding head body, a magnetic head body and a magnetic head body, wherein the magnetic head body is arranged on the magnetic head body, and the magnetic head body is arranged on: one end of the first gear shaft is fixed with a synchronous pulley which is connected with the motor through a synchronous belt, and the other end of the first gear shaft is fixed with a coupler which is connected with the third gear shaft; one end of the second gear shaft is suspended, the other end of the second gear shaft is connected with the polishing head through a coupler, and the number of the second gear shafts is not less than N, and optionally N is 3; the inner gear ring is fixed on the shell through a third bolt and a sixth bolt, and the shell is fixed on the ball screw module through a bolt, a nut and a connecting piece; one end of the fourth bearing end cover is provided with an external gear and meshed with the third gear shaft; the number of teeth of the gears on the first gear shaft is different from the number of teeth of the gears on the third gear shaft; the first connecting piece, the second connecting piece and the third connecting piece in the polishing head are provided with grooves and threaded holes, and after being spliced and fastened, the polishing head is provided with at least N permanent magnets, and optionally N is 2;
the minimum distance between the outer surfaces of the first permanent magnet and the second permanent magnet and the inner surface of the cylindrical shell is not more than 1-5 mm, and optionally, the minimum distance is 3mm;
the minimum thickness of the cylindrical shell is not more than 1-5 mm, and optionally, the minimum thickness is 3mm;
the arrangement direction of the magnetic poles of the first permanent magnet and the second permanent magnet in the polishing head is in the same direction.
The magnetorheological polishing device with the self-repairing grinding head has the advantages that: compared with mechanical polishing, the device has controllable polishing distance and good polishing uniformity effect; compared with electrolytic polishing, the device does not need to pretreat workpieces, has strong universality and long service life; compared with chemical polishing, the polishing solution of the device can be recycled, and the polishing process is pollution-free; the device can realize self-updating of the flexible grinding head without additional equipment, and has simple structure, simple and convenient operation and high reliability.
Drawings
FIG. 1 is a layout diagram of a magnetorheological polishing device with self-repairing grinding heads according to the present invention.
FIG. 2 is a cross-sectional view of a transmission of a magnetorheological polishing apparatus with self-repairing grinding heads in accordance with the present invention.
FIG. 3 is a cross-sectional view of a polishing head of a magnetorheological polishing device with self-repairing grinding heads according to the present invention.
Fig. 4 is an exploded view of a polishing head of a magnetorheological polishing device with a self-repairing grinding head according to the present invention.
In the drawing the view of the figure, A three-way engine assembly comprises a foot cup, 2 an instrument operating panel, 3 a frame, 4 a ball screw module, 5 a fifth connecting piece, 6 a motor, 7 a synchronous belt, 8 a synchronous pulley, 9 a transmission device, 10 a coupling, 11 a third gear shaft, 12 a polishing head, 13 a vacuum adsorbing platform, 14 a clamp mounting platform, 15 a second gear shaft, 16 a first bolt, 17 a first bearing end cover, 18 a second bolt, 19 a housing, 20 a first deep groove ball bearing, 21 a third bolt, 22 a first tapered roller bearing, 23 a second deep groove ball bearing, 24 a third deep groove ball bearing, 25 a first baffle plate, 26 a fourth bolt, 27 a first gear shaft, 28 a second bearing end cover, 29 a support frame, 30 a fifth bolt, 31 a nut, 32 a ring gear, 33 a sixth bolt, 34 a second tapered roller bearing, 35 a second baffle plate, 36 a fourth groove ball bearing, 37 a third end cover, 38 a seventh housing, 39 a third tapered groove ball bearing, 40, 42 a third deep groove ball bearing, 48 a fourth tapered groove ball bearing, 48 a fourth connecting piece, 48 a fourth tapered groove ball bearing, 48 a fourth end cover, 48 a third tapered groove ball bearing, 48.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
A magnetorheological polishing device with a self-repairing grinding head consists of a foot cup 1, an instrument operation panel 2, a frame 3, a ball screw module 4, a fifth connecting piece 5, a motor 6, a synchronous belt 7, a synchronous belt pulley 8, a transmission device 9, a coupler 10, a third gear shaft 11, a polishing head 12, a vacuum adsorption platform 13 and a clamp mounting platform 14; the foot cup 1 is arranged on the frame 3; the fifth connecting piece 5 is fixed on the ball screw module 4; the ball screw module 4 is fixed on the frame 3; the clamp mounting platform 14 is mounted on the frame 3; the instrument operation panel 2 is mounted on the clamp mounting platform 14; the vacuum adsorption platform 13 is arranged on the clamp mounting platform 14; the motor 6 is fixed on the fifth connecting piece 5; the transmission device 9 is fixed on the fifth connecting piece 5; the synchronous belt wheels 8 are respectively fixed on the motor 6 and the transmission device 9, and torque can be transmitted between the motor 6 and the transmission device through the synchronous belt 7; the polishing head 12 is connected with the transmission device 9 through a coupling 10; the third gear shaft 11 is connected with the transmission device 9 through a coupler 10 and meshed with an external gear on a fourth bearing end cover 50 in the polishing head 12;
the transmission device 9 mainly comprises a second gear shaft 15, a first bolt 16, a first bearing end cover 17, a second bolt 18, a shell 19, a first deep groove ball bearing 20, a third bolt 21, a first tapered roller bearing 22, a second deep groove ball bearing 23, a third deep groove ball bearing 24, a first baffle 25, a fourth bolt 26, a first gear shaft 27, a second bearing end cover 28, a support frame 29, a fifth bolt 30, a nut 31, an annular gear 32, a sixth bolt 33, a second tapered roller bearing 34, a second baffle 35, a fourth deep groove ball bearing 36, a third bearing end cover 37 and a seventh bolt 38; the housing 19 is coupled to a second baffle 35 by a second bolt 18; the first bearing end cover 17, the second bearing end cover 28 and the third bearing end cover 37 are respectively connected with the supporting frame 29 through a first bolt 16, a fourth bolt 26 and a seventh bolt 38; the supporting frame 29 is connected with the first baffle 25 through a fifth bolt 30 and a nut 31; the ring gear 32 is coupled to the housing 19 by a third bolt 21 and a sixth bolt 33; the first tapered roller bearing 22 and the second tapered roller bearing 34 are assembled on the housing 19, so that the housing 19 and the other three: the first baffle 25, the second baffle 35 and the supporting frame 29 can move relatively; the gears on the second gear shaft 15 can be regarded as planetary gears, and two ends of the planetary gears are matched with the first deep groove ball bearing 20 and the second deep groove ball bearing 23, so that the second gear shaft 15 and the supporting frame 29 can move relatively; the gear on the first gear shaft 27 can be regarded as a sun gear, and two ends of the sun gear are matched with the third deep groove ball bearing 24 and the fourth deep groove ball bearing 36, so that the first gear shaft 27 and the supporting frame 29 can move relatively;
the polishing head 12 mainly comprises a cylindrical shell 39, a first permanent magnet 40, a second permanent magnet 41, a first connecting piece 42, a second connecting piece 43, a third connecting piece 44, an eighth bolt 45, a fifth deep groove ball bearing 46, a sixth deep groove ball bearing 47, a fourth connecting piece 48, a ninth bolt 49, a fourth bearing end cover 50 and a shaft 51; the first permanent magnet 40 and the second permanent magnet 41 are connected with a first connecting piece 42, a second connecting piece 43 and a third connecting piece 44; the first connecting piece 42, the second connecting piece 43 and the third connecting piece 44 are mutually spliced and fastened by an eighth bolt 45; the shaft 51 is coupled to the third connecting member 44 by threads; the fifth deep groove ball bearing 46 and the sixth deep groove ball bearing 47 are assembled on the shaft 51, so that the shaft 51, the first connecting piece 42, the second connecting piece 43, the third connecting piece 44, the first permanent magnet 40, the second permanent magnet 41 and the other three: the fourth bearing end cap 50, the fourth connector 48, and the cylindrical housing 39 are movable relative to one another; the fourth bearing end cap 50 is coupled to the fourth connecting member 48 by a ninth bolt 49; the cylindrical housing 39 is coupled to a fourth connection 48 by means of threads.
The magnetorheological polishing device with the self-repairing grinding head comprises a grinding head body, a magnetic head body and a magnetic head body, wherein the magnetic head body is arranged on the magnetic head body, and the magnetic head body is arranged on: one end of the first gear shaft 27 is fixed with a synchronous pulley 8 which is connected with the motor 6 through a synchronous belt 7, and the other end is fixed with a coupler 10 which is connected with a third gear shaft 11; one end of the second gear shaft 15 is suspended, the other end of the second gear shaft 15 is connected with the polishing head 12 through the coupler 10, and the number of the second gear shafts 15 is not less than N, optionally N is 3; the inner gear ring 32 is fixed on the shell 19 through a third bolt 21 and a sixth bolt 33, and the shell 19 is fixed on the ball screw module 4 through bolts, nuts and connecting pieces; one end of the fourth bearing end cap 50 is provided with an external gear and meshed with the third gear shaft 11; the number of gear teeth on the first gear shaft 27 is different from the number of gear teeth on the third gear shaft 11; the first connecting piece 42, the second connecting piece 43 and the third connecting piece 44 in the polishing head 12 are provided with grooves and threaded holes, and after being spliced and fastened, permanent magnets with the number of N or more are assembled, and optionally N is 2;
the minimum distance between the outer surfaces of the first and second permanent magnets 40, 41 and the inner surface of the cylindrical housing 39 is not more than 1 to 5mm, alternatively, the minimum distance is 3mm;
the cylindrical shell 39 has a minimum thickness of not more than 1 to 5mm, alternatively a minimum thickness of 3mm;
the first permanent magnet 40 and the second permanent magnet 41 in the polishing head 12 are arranged in the same direction.
The invention relates to a magnetorheological polishing device with a self-repairing grinding head, which comprises the following specific implementation modes and working principles: as shown in fig. 2, the gear structure in the transmission device 9 is an epicyclic gear train, the ring gear 32 in the gear train is fixed, the first gear shaft 27 rotates around its own axis, and the second gear shaft 15 also revolves around the axis of the first gear shaft 27 while rotating around its own axis under the drive of the first gear shaft 27. One end of the first gear shaft 27 is an input end, the other end is an output end, one end of the second gear shaft 15 is suspended, and the other end is an output end, namely, the transmission device 9 in fig. 2 can convert one input torque into 4 output torques, the output end of the first gear shaft 27 is connected with the third gear shaft 11, the third gear shaft 11 is meshed with an external gear on the fourth bearing end cover 50 in the polishing head 12, and the output end of the second gear shaft 15 is connected with the shaft 51 of the polishing head 12.
As shown in fig. 3 and 4, the first permanent magnet 40, the second permanent magnet 41 are assembled with the first connecting piece 42, the second connecting piece 43, the third connecting piece 44 and the eighth bolt 45, the third connecting piece 44 is provided with internal threads for being connected with external threads on the shaft 51, the first permanent magnet 40 and the second permanent magnet 40 can revolve around the axis of the shaft 51, the cylindrical shell 39 is provided with internal threads for being connected with external threads on the fourth connecting piece 48, the fourth connecting piece 48 is fixedly connected with the fourth bearing end cover 50 through the ninth bolt 49, the fifth deep groove ball bearing 46 and the sixth deep groove ball bearing 47 enable the cylindrical shell 39 to rotate around the axis of the shaft 51 and the speed of revolution of the first permanent magnet 40 and the second permanent magnet 41 around the shaft 51 is different from the speed of rotation of the cylindrical shell 39 around the axis of the cylindrical shell because the gear number on the first gear shaft 27 is different from the gear number on the third gear shaft 11 in the transmission device 9.
As shown in fig. 1, the power source of the polishing device is a motor 6, which transmits torque to a transmission device 9 through belt transmission, the transmission device 9 transmits torque to a polishing head 12, the polishing head 12 polishes a workpiece fixed on a vacuum adsorption platform 13, the distance between the polishing head 12 and the workpiece can be adjusted through a ball screw module 4, and the starting and stopping of the motor 6, the distance between the polishing head 12 and the workpiece and the rotating speed of the polishing head 12 can be controlled by an instrument operation panel 2.
As can be seen from the above, the magnetic field of the polishing head 12 is generated by the first permanent magnet 40 and the second permanent magnet 41, and the speed difference exists between the first permanent magnet 40, the second permanent magnet 41 and the cylindrical housing 39, so that the static magnetic field generated by the first permanent magnet 40 and the second permanent magnet 41 becomes a moving magnetic field rotating around the shaft 51 under the action of the structure of the polishing head 12, however, the polishing liquid attached to the surface of the polishing head 12 does not follow the magnetic field to perform the rotating motion relative to the polishing head 12, but is static relative to the polishing head 12, so that the flexible "grinding head" generated under the action of the magnetic field alternately shows the viscoplasticity and the fluidity while rotating along with the polishing head 12, thereby continuously regenerating and rebuilding the microstructure of the flexible "grinding head", thus realizing the self-repairing function of the flexible "grinding head", and solving the problem of updating the "grinding head".
The magnetorheological polishing method for self-repairing of the grinding head provided by the invention is applied to the magnetorheological polishing device for self-repairing of the grinding head, and comprises the following steps:
s101, before the device is used, reasonably embedding the sealing strip into a sealing groove of the vacuum adsorption platform 13 according to the size of a machined part;
s102, smoothly discharging the workpiece within the contact range of the sealing ring, and accessing to any air source position in a processing workshop, and performing the next operation when the workpiece is firmly adsorbed on the vacuum adsorption platform 13;
s103, switching on the power supply to start the machine, adjusting the polishing head 12 to a proper position through the instrument operation panel 2, and adding a proper amount of polishing liquid. Due to the action of the magnetic field, the polishing liquid can form a flexible grinding head to be attached to the polishing head 12, and then the motor 6 can be started for polishing;
and S104, after polishing, removing the workpiece, placing a proper container at the lower part of the polishing head 12, screwing off the cylindrical shell 39 of the polishing head 12, and because the cylindrical shell 39 is made of non-magnetic conductive materials, when the polishing liquid attached to the cylindrical shell 39 is far away from the first permanent magnet 40 and the second permanent magnet 41, losing viscoplasticity to become flowing liquid, and falling into the container to facilitate cleaning of the polished device.

Claims (8)

1. A magnetorheological polishing device with a self-repairing grinding head is characterized in that: the polishing device comprises a foot cup (1), an instrument operation panel (2), a frame (3), a ball screw module (4), a fifth connecting piece (5), a motor (6), a synchronous belt (7), a synchronous belt wheel (8), a transmission device (9), a coupler (10), a third gear shaft (11), a polishing head (12), a vacuum adsorption platform (13) and a clamp mounting platform (14); the foot cup (1) is arranged on the frame (3); the fifth connecting piece (5) is fixed on the ball screw module (4); the ball screw module (4) is fixed on the frame (3); the clamp mounting platform (14) is mounted on the frame (3); the instrument operation panel (2) is arranged on the clamp installation platform (14); the vacuum adsorption platform (13) is arranged on the clamp mounting platform (14); the motor (6) is fixed on the fifth connecting piece (5); the transmission device (9) is fixed on the fifth connecting piece (5); the synchronous belt wheels (8) are respectively fixed on the motor (6) and the transmission device (9) and can transmit torque between the motor (6) and the transmission device through the synchronous belt (7); the polishing head (12) is connected with the transmission device (9) through a coupler (10); the third gear shaft (11) is connected with the transmission device (9) through a coupler (10) and meshed with an external gear on a fourth bearing end cover (50) in the polishing head (12);
the transmission device (9) mainly comprises a second gear shaft (15), a first bolt (16), a first bearing end cover (17), a second bolt (18), a shell (19), a first deep groove ball bearing (20), a third bolt (21), a first tapered roller bearing (22), a second deep groove ball bearing (23), a third deep groove ball bearing (24), a first baffle (25), a fourth bolt (26), a first gear shaft (27), a second bearing end cover (28), a supporting frame (29), a fifth bolt (30), a nut (31), an inner gear ring (32), a sixth bolt (33), a second tapered roller bearing (34), a second baffle (35), a fourth deep groove ball bearing (36), a third bearing end cover (37) and a seventh bolt (38); the shell (19) is connected with a second baffle (35) through a second bolt (18); the first bearing end cover (17), the second bearing end cover (28) and the third bearing end cover (37) are respectively connected with the support frame (29) through a first bolt (16), a fourth bolt (26) and a seventh bolt (38); the supporting frame (29) is connected with the first baffle (25) through a fifth bolt (30) and a nut (31); the inner gear ring (32) is connected with the shell (19) through a third bolt (21) and a sixth bolt (33); the first tapered roller bearing (22) and the second tapered roller bearing (34) are assembled on the shell (19), so that the shell (19) is connected with other three parts: the first baffle (25), the second baffle (35) and the supporting frame (29) can move relatively; the gears on the second gear shaft (15) can be regarded as planetary gears, and two ends of the gears are respectively matched with the first deep groove ball bearing (20) and the second deep groove ball bearing (23) so that the second gear shaft (15) and the supporting frame (29) can move relatively; the gear on the first gear shaft (27) can be regarded as a sun gear, and two ends of the sun gear are respectively matched with a third deep groove ball bearing (24) and a fourth deep groove ball bearing (36) so that the first gear shaft (27) and the support frame (29) can move relatively, and the number of teeth of the gear on the first gear shaft (27) is different from the number of teeth of the gear on the third gear shaft (11);
the polishing head (12) mainly comprises a cylindrical shell (39), a first permanent magnet (40), a second permanent magnet (41), a first connecting piece (42), a second connecting piece (43), a third connecting piece (44), an eighth bolt (45), a fifth deep groove ball bearing (46), a sixth deep groove ball bearing (47), a fourth connecting piece (48), a ninth bolt (49), a fourth bearing end cover (50) and a shaft (51); the first permanent magnet (40) and the second permanent magnet (41) are connected with the first connecting piece (42), the second connecting piece (43) and the third connecting piece (44); the first connecting piece (42), the second connecting piece (43) and the third connecting piece (44) are spliced with each other and are fastened through an eighth bolt (45); the shaft (51) is coupled to a third connecting piece (44) by means of a thread; the fifth deep groove ball bearing (46) and the sixth deep groove ball bearing (47) are assembled on the shaft (51) to enable the shaft (51), the first connecting piece (42), the second connecting piece (43), the third connecting piece (44), the first permanent magnet (40), the second permanent magnet (41) and the other three to be assembled: the fourth bearing end cover (50), the fourth connecting piece (48) and the cylindrical shell (39) can move relatively; the fourth bearing end cover (50) is connected with a fourth connecting piece (48) through a ninth bolt (49); the cylindrical shell (39) is connected with a fourth connecting piece (48) through threads, the first permanent magnet (40) and the second permanent magnet (41) are arranged in a clearance mode, and the first permanent magnet (40) and the second permanent magnet (41) are arranged inside the cylindrical shell (39);
one end of the first gear shaft (27) is fixed with a synchronous pulley (8) and is connected with the motor (6) through a synchronous belt (7), and the other end of the first gear shaft (27) is connected with the third gear shaft (11); one end of the second gear shaft (15) is suspended, the other end of the second gear shaft is connected with the polishing head (12) through the coupler (10), and the output end of the second gear shaft (15) is connected with the shaft (51) of the polishing head (12).
2. A magnetorheological polishing apparatus for self-repairing a grinding head as defined in claim 1, wherein: the polishing head (12) is provided with permanent magnets with the number of not less than N.
3. A magnetorheological polishing apparatus with self-repairing grinding head as defined in claim 2, wherein: n is 2.
4. A magnetorheological polishing apparatus for self-repairing a grinding head as defined in claim 1, wherein: the minimum distance between the outer surface of the permanent magnet and the inner surface of the cylindrical housing (39) is not more than 1-5 mm.
5. The magnetorheological polishing apparatus for self-repairing a grinding head of claim 4, wherein: the minimum distance is taken to be 2mm.
6. A magnetorheological polishing apparatus for self-repairing a grinding head as defined in claim 1, wherein: the cylindrical housing (39) is of a magnetically non-conductive material and has a minimum thickness of no more than 1-5 mm.
7. The magnetorheological polishing apparatus for self-repairing a grinding head of claim 6, wherein: the minimum thickness is taken to be 3mm.
8. A magnetorheological polishing apparatus for self-repairing a grinding head as defined in claim 1, wherein: the arrangement direction of the magnetic poles of the first permanent magnet (40) and the second permanent magnet (41) in the polishing head (12) is in the same direction.
CN202210242448.9A 2022-03-13 2022-03-13 Magnetorheological polishing device with self-repairing grinding head Active CN114654376B (en)

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CN104565275A (en) * 2014-12-30 2015-04-29 李帅 Planetary gear type three-rotor static-pressure coupling transmission mechanism
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CN207464836U (en) * 2017-11-06 2018-06-08 广东工业大学 A kind of dynamic magnetic field magnetorheological finishing device
CN113681436B (en) * 2021-09-26 2022-10-21 温州大学 Polishing device and polishing method thereof
CN114055258B (en) * 2021-11-19 2023-04-18 浙江师范大学 Magnetic polishing device and magnetic polishing control method
CN114043318A (en) * 2021-11-22 2022-02-15 南方科技大学 Magnetorheological polishing device, polishing method and polished workpiece

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