Polishing device

Abstract

The present invention discloses a polishing device, comprising: a cylinder, a floating sand net and polishing sand grains contained on the floating sand net are arranged in the cylinder, the floating sand net plate divides the cylinder into a working chamber and a sanding chamber arranged up and down, the floating sand net is evenly provided with ventilation holes, and the particle size of the polishing sand grains is larger than the aperture of the ventilation holes; a rotating clamping mechanism, the rotating clamping mechanism comprises a support and a rotating fixture connected to the support, and the rotating fixture is arranged in the working chamber; a first driving mechanism, the first driving mechanism is connected to the rotating fixture and drives the rotating fixture to rotate in the working chamber; an air blowing mechanism, the air blowing mechanism is connected to the sanding chamber and outputs a floating sand airflow, the floating sand airflow passes through the floating sand net and floats the polishing sand grains in the working chamber. The present invention utilizes the floating polishing sand grains and the rotating action of the rotating fixture to quickly realize the polishing process of the workpiece, greatly improve the polishing efficiency, and realize the all-round polishing process.

Description

Technical Field

[0001] The invention relates to the technical field of polishing, and in particular to a polishing device. Background Art

[0002] Castings often need to be polished after casting. Traditional polishing is done manually, which has high labor costs and low polishing efficiency, wasting a lot of time and manpower. Existing polishing equipment uses a grinding wheel to polish the casting on one side, and the polishing area is very limited. Especially for some castings with irregular curved surfaces, manual polishing is still required to polish the unpolished surface, which is very troublesome. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a polishing device that utilizes floating polishing sand grains and the rotation of a rotating fixture to quickly realize the polishing process of a workpiece, greatly improve the polishing efficiency, and realize an all-round polishing process.

[0004] According to the first aspect of the present invention, the polishing device comprises: a cylinder, a floating sand net is arranged in the cylinder, the floating sand net divides the cylinder into a working chamber and a sand removing chamber arranged up and down, the floating sand net is provided with air holes, the particle size of the polishing sand is larger than the aperture of the air holes; a rotating clamping mechanism, the rotating clamping mechanism comprises a support and a rotating clamp connected to the support, the rotating clamp is arranged in the working chamber; a first driving mechanism, the first driving mechanism is connected to the rotating clamp and drives the rotating clamp to rotate in the working chamber; and an air blowing mechanism, the air blowing mechanism is connected to the sand removing chamber.

[0005] The polishing device according to the embodiment of the present invention has at least the following beneficial effects: polishing sand grains are placed on the floating sand net, and the blowing mechanism blows the polishing sand grains used for polishing into the cylinder and suspends them in the working chamber of the cylinder. Since the floating sand airflow will continuously and repeatedly lift and lower the polishing sand grains in the cylinder during the blowing process, and assist the rotation effect of the rotating fixture, the workpiece is continuously in contact and friction with the floating polishing sand grains under the action of rotation, and the polishing sand grains filling the working chamber perform a full-scale polishing process on the workpiece, thereby solving the problem that some irregular surfaces are difficult to polish, improving the polishing efficiency, and accelerating the casting processing process of the workpiece.

[0006] According to some embodiments of the present invention, a vibrator is provided on the side wall of the cylinder, and an elastic support assembly is provided at the bottom of the cylinder. The vibrator is used to vibrate the cylinder, and when the polishing sand grains are not working, the cylinder causes the floating sand net to vibrate rapidly under the action of the vibrator, so that the polishing sand grains placed on the floating sand net are evenly distributed, and during the polishing process of the polishing sand grains, the cylinder vibrates, and the polishing sand grains that fall on the floating sand net are evenly thrown up and suspended in the cylinder under the action of the vibration, which can help the movement of the polishing sand grains in the cylinder and improve the polishing efficiency.

[0007] According to some embodiments of the present invention, the elastic support assembly is composed of a plurality of compression springs supporting the cylinder, which is one of the preferred structures of the elastic support cylinder.

[0008] According to some embodiments of the present invention, the support is provided with a lifting mechanism, a second driving mechanism and a third driving mechanism, the lifting mechanism is provided with a rotating head, the rotating head has a connecting arm extending laterally, the rotating fixture is installed on the bottom side of the end of the connecting arm, the second driving mechanism is connected to the rotating head and drives the rotating head to rotate, and the third driving mechanism is connected to the lifting mechanism and drives the lifting mechanism to perform lifting and lowering movements. The lifting mechanism and the rotating head are reasonably designed, and when the workpiece to be processed needs to be replaced, the lifting mechanism lifts the rotating fixture out of the cylinder, and leaves the cylinder under the rotation of the rotating head, which is conducive to the rapid replacement process of the workpiece.

[0009] According to some embodiments of the present invention, the lifting mechanism includes a guide shaft, the rotating head is arranged on the guide shaft, and the third driving mechanism is a motor. The motor is connected to the guide shaft through a screw pair and drives the guide shaft to rise and fall on the support, which is one of the preferred structures of the lifting mechanism.

[0010] According to some embodiments of the present invention, the rotating fixture includes: a revolving shaft, a revolving disk is provided on the revolving shaft, the first driving mechanism is connected to the revolving shaft and drives the revolving shaft to rotate; at least one self-rotating shaft, the self-rotating shaft is rotatably connected to the revolving disk and is transmission-connected to the revolving shaft, at least one workpiece clamp is provided on the self-rotating shaft, when the first driving mechanism drives the driving shaft to rotate, the revolving disk rotates around the revolving shaft, the self-rotating shaft rotates on the revolving disk relative to the revolving disk, thereby realizing the revolution and rotation process of the workpiece in the cylinder body, and during the rotation process of the self-rotating shaft and the revolving shaft, the workpiece continuously rotates the contact surface with the polishing sand grains, so that the workpiece surface is in full contact with the polishing sand grains, thereby realizing an all-round polishing process.

[0011] According to some embodiments of the present invention, four rotation shafts are provided and are evenly arranged on the revolution disk around the revolution shaft, and each of the rotation shafts is provided with six workpiece clamps.

[0012] According to some embodiments of the present invention, the self-rotating shaft and the revolving shaft are connected via gears, which is one of the preferred transmission connection structures between the self-rotating shaft and the revolving shaft.

[0013] According to some embodiments of the present invention, the floating sand net includes a supporting mesh plate and a floating sand membrane laid on the upper end surface of the supporting mesh plate, the ventilation holes are evenly distributed on the floating sand membrane, the mesh plate is evenly distributed with flow holes, the aperture of the flow holes is larger than the aperture of the ventilation holes, which is one of the preferred structures of the floating sand net, the floating sand membrane is used to prevent the polishing sand grains from leaking to the bottom of the cylinder, the supporting mesh plate supports the floating sand membrane, increases the pressure bearing capacity of the floating sand membrane, and avoids damage due to excessive polishing sand grains, and is also beneficial to the uniform sand laying process during the vibration process, avoiding large-scale deformation of the floating sand.

[0014] According to some embodiments of the present invention, the floating sand membrane is cloth, which is one of the preferred structural materials of the floating sand membrane.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

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

[0018] Figure 2 for Figure 1 A schematic structural diagram of a first driving mechanism and a rotating fixture is shown;

[0019] Figure 3 for Figure 2 An exploded view showing the structure;

[0020] Figure 4 for Figure 1 A schematic cross-sectional view of the structure is shown;

[0021] Figure 5 An exploded view of a floating sand net according to an embodiment of the present invention;

[0022] Figure 6 for Figure 5 A local enlarged schematic diagram of point A in the middle.

[0023] Reference numerals:

[0024] Cylinder 100, floating sand net 110, floating sand film 111, supporting mesh plate 112, vent hole 113, flow hole 114, working chamber 120, sand removal chamber 130, polishing sand grains 140, rotating fixture 200, revolution axis 210, revolution disk 220, upper cover 221, base plate 222, rotation axis 230, workpiece clamp 240, first driving mechanism 300, driving shaft 310, blowing mechanism 400, connecting pipe 410, exciter 500, elastic support assembly 600, compression spring 610, support plate 620, support 700, rotating head 710, connecting arm 711, guide shaft 720, second driving mechanism 800, third driving mechanism 900 DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Refer to Figures 1 to 6 , the polishing device according to an embodiment of the present invention is described below.

[0030] like Figures 1 to 6As shown, the polishing device according to the embodiment of the present invention includes a barrel 100, a rotating clamping mechanism, a first driving mechanism 300 and an air blowing mechanism 400. A floating sand net 110 is provided in the barrel 100. The floating sand net 110 is fixedly installed in the barrel 100 and divides the barrel 100 into two inner chambers arranged in an upper and a lower part, respectively, a working chamber 120 arranged in an upper part and a sanding chamber 130 arranged in a lower part. The floating sand net 110 is used to hold polishing sand grains 140. The polishing sand grains 140 are particles used for polishing in the working chamber 120. The polishing sand grains 140 are laid and held in the working chamber 120. On the floating sand net 110, there is an air vent 113 in the floating sand net 110. The aperture of the air vent 113 is smaller than the particle size of the polishing sand grains 140, so that the polishing sand grains 140 cannot pass through the floating sand net 110 into the sand lifting chamber 130. The sand lifting chamber 130 is connected with a blowing mechanism 400. The blowing mechanism 400 is used to introduce a floating sand airflow into the bottom of the cylinder 100, i.e., the sand lifting chamber 130. The floating sand airflow passes upward through the air vent 113 of the floating sand net 110 and floats the polishing sand grains into the working chamber 120, so that the polishing sand grains 140 are filled in the working chamber 120 and float continuously.

[0031] The rotary clamping mechanism includes a support 700 and a rotary fixture 200. The rotary fixture 200 is connected to the support 700 and is disposed in the cylinder 100. The cylinder 100 is a top-opening structure. The rotary fixture 200 penetrates from the opening into the working chamber 120 of the cylinder 100. The rotary fixture 200 rotates in the working chamber 120 and the polishing action of the polishing sand grains 140 is combined to realize the polishing process of the workpiece. It should be noted that the support 700 can be disposed on the side of the cylinder 100, but it can only be disposed on the top of the cylinder 100. When the support 700 is disposed on the side of the cylinder 100, the support 700 can support the rotary fixture 200 through a supporting component extending to the cylinder 100. When the support 700 is disposed on the top, it can be disposed on the ceiling or on other structures such as bases. The rotating fixture 200 is used to clamp and rotate the workpiece in the cylinder 100, and is connected to the first driving mechanism 300, which is used to drive the rotating fixture 200 to rotate in the working chamber 120. In this embodiment, the first driving mechanism 300 is installed on the support 700 and is in driving connection with the rotating fixture 200.

[0032] During specific implementation, the blowing mechanism 400 sends the floating sand airflow into the sand raising chamber 130. The floating sand airflow moves upward after colliding with the cavity wall of the sand raising chamber 130, and blows up the polishing sand grains 140 through the floating sand net 110. The polishing sand grains 140 float up and down in the working chamber 120 under the interaction of the floating sand airflow and gravity. The first driving mechanism 300 rotates the workpiece in the working chamber 120 through the rotating fixture 200, so that the workpiece contacts and collides with the polishing sand grains 140 to realize the polishing process. Since the floated polishing sand grains 140 are distributed in the working chamber 120, the polishing sand grains 140 can contact all surfaces of the workpiece during the rotation of the workpiece, thereby achieving an all-round polishing effect.

[0033] In some embodiments of the present invention, a vibrator 500 is provided on the side wall of the cylinder 100, and an elastic support assembly 600 is provided at the bottom of the cylinder 100. The vibrator 500 is used to excite the cylinder 100 and make the cylinder 100 vibrate, and the elastic support assembly 600 is used to assist the cylinder 100 in vibrating, so that the cylinder 100 has a tendency to vibrate, and the cylinder 100 is set on the ground through the elastic support assembly 600. When the polishing sand grains 140 are in a non-working state, that is, the polishing sand grains 140 are placed on the floating sand net 110, and the polishing sand grains on the floating sand net 110 may be in an uneven state, the vibrator 500 takes effect, and the cylinder 100 vibrates with low amplitude and high frequency. Since the floating sand net 110 is fixedly installed in the cylinder 100, the cylinder 100 drives the floating sand net 110 to vibrate, and the polishing sand grains 140 are evenly spread on the floating sand net 110 by using a vibration principle similar to that of a vibrating screen, so that the floating sand airflow evenly blows up the polishing sand grains. Similarly, when the polishing sand grains 140 are in the working state, i.e., floating in the working chamber 120, there is a situation where sand grains fall into the working chamber 120, and the vibrator 500 makes the cylinder 100 vibrate. At this time, the polishing sand grains 140 that fall into the working chamber 120 can also be evenly pushed to other corners during the vibration process, so as to cover the entire working inner chamber. It should be noted that the polishing sand grains 140 can be fixedly installed in the cylinder 100 by screw connection or bolt connection, and the structure of the cylinder 100 is cylindrical. In addition, the structure of the cylinder 100 can also be elliptical, cubic or other cylindrical structures, which can also achieve the technical effect of the present invention.

[0034] Specifically, the elastic support assembly 600 is composed of a plurality of compression springs 610 supporting the cylinder 100. At least three compression springs 610 are provided to form a polygonal stable support structure to support the cylinder 100. A support plate 620 is provided at the bottom of the elastic support assembly 600. The compression spring 610 is fixedly connected between the cylinder 100 and the support plate 620, so that the cylinder 100 has a tendency to vibrate and produces a vibration effect in cooperation with the exciter 500. In addition, the elastic support assembly 600 can also be other elastic support structures, such as rubber blocks, air springs, etc., which can also play a technical effect of assisting the vibration of the cylinder 100.

[0035] In some embodiments of the present invention, the support 700 is provided with a lifting mechanism, a second driving mechanism 800 and a third driving mechanism 900, the lifting mechanism is provided with a rotating head 710, the rotating head 710 is rotatably connected to the lifting mechanism, and can rotate horizontally around the lifting mechanism, the lifting mechanism is used to push the rotating head 710 to perform lifting and lowering movements, the rotating head 710 is laterally extended with a connecting arm 711, the rotating fixture 200 is installed on the bottom side of the end of the connecting arm 711, and the connecting arm 711 rotates to the top of the cylinder 100 under the action of the rotating head 710, the second driving mechanism 800 is connected to the rotating head 710 and is used to drive the rotating head 710 to rotate, and the third driving mechanism 900 is connected to the lifting mechanism and drives the lifting mechanism to perform lifting and lowering movements. When picking up and placing workpieces, the lifting mechanism lifts the rotating fixture 200 through the rotating head 710 and the connecting arm 711, so that the rotating fixture 200 leaves the working chamber 120 from the upper end of the cylinder 100, removes the workpiece on the rotating fixture 200 or reloads a new workpiece, and completes the replacement process.

[0036] Specifically, the second drive mechanism 800 and the third drive mechanism 900 are both motors. The second drive mechanism 800 is arranged on the rotating head 710, and drives the rotating shaft to rotate through the rotating shaft. The third drive mechanism 900 is fixedly installed on the support 700. The lifting mechanism includes a guide shaft 720 that is inserted through the support 700. The guide shaft 720 can move up and down on the support 700. The support 700 is provided with a limit seat that limits the guide shaft 720 to perform lifting and lowering movements. The third drive mechanism 900 is connected to the guide shaft 720 through a screw pair and drives the guide shaft 720 to perform lifting and lowering movements on the support 700. The rotating head is installed on the end of the guide shaft 720, and the lifting and lowering movement is realized through the guide shaft 720. In addition, the lifting mechanism can also be other lifting structures, and the third drive mechanism 900 can also be other driving parts such as a bidirectional cylinder.

[0037] In some embodiments of the present invention, the rotating fixture 200 includes a revolving shaft 210 and at least one rotating shaft 230. A revolving disk 220 is provided at the bottom of the revolving shaft 210. The revolving disk 220 can be fixedly installed on the revolving shaft 210 by interference fit or flange connection. The revolving shaft 210 can perform autorotation motion driven by the revolving shaft 210. The rotating shaft 230 is rotatably connected to the bottom of the revolving disk 220 and is transmission-connected to the revolving shaft 210. At least one workpiece clamp 240 is provided on the rotating shaft 230, and the workpiece clamp 240 is used to clamp the workpiece. The first driving mechanism 300 is provided with a driving shaft 310, which is in driving connection with the revolution shaft 210. When the first driving mechanism 300 drives the driving shaft 310 to rotate, the revolution plate 220 rotates around the revolution shaft 210, and the rotation shaft 230 rotates relative to the revolution plate 220 on the revolution plate 220, thereby driving the workpiece on the workpiece fixture to rotate around the rotation shaft 230 while also performing a revolution on the revolution plate 220, so that the workpiece can be in full contact with the polishing sand grains 140 in the working chamber 120 for the polishing process. Of course, the revolution shaft 210 can also be a driving shaft 310 directly arranged on the first driving mechanism 300, which can also achieve the technical effect of driving the revolution plate to rotate in the present invention.

[0038] Specifically, the revolution disk 220 is formed by fixing the base plate 222 and the upper cover 221 by screw connection, the upper cover 221 is fixedly connected to the revolution shaft 210, and a cavity is formed between the upper cover 221 and the base plate 222. The bottom of the revolution shaft 210 passes through the upper cover 221 and is connected to the self-rotation shaft 230 by gear transmission and drives the self-rotation shaft 230 to rotate at the same time. The cavity is used to accommodate the gear, and the revolution shaft 210 can also drive the self-rotation shaft 230 to rotate by other transmission methods such as belt transmission. The revolution shaft 210 is connected to the drive shaft 310 through a coupling, and the drive shaft 310 can also drive the revolution shaft 210 to rotate by other transmission connection methods such as gear transmission and belt transmission, which can also achieve the technical effect of the rotation and revolution of the workpiece in the present invention.

[0039] More specifically, at least one rotation axis 230 is provided, and the rotation axis 230 can be concentrically or eccentrically arranged on the revolution disk 220. When the rotation axis 230 is concentrically arranged, the workpiece clamp 240 can only rotate along the rotation axis 230. When the rotation axis 230 is eccentrically arranged, it can realize the process of revolution and rotation around the rotation axis 230. The number of the rotation axis 230 can be one, two, or more than two, and multiple rotation axes 230 can be designed according to actual processing requirements. Similarly, the workpiece clamp 240 on each rotation axis 230 can be one, two, or more than two, and multiple workpiece clamps 240 can be designed according to actual processing requirements. In this embodiment, four self-rotating shafts 230 are provided and are evenly arranged in an annular manner around the revolution shaft 210 on the revolution disk 220. Six workpiece clamps 240 are provided on each self-rotating shaft 230. Each workpiece clamp 240 clamps a workpiece. The workpiece clamp 240 can be an elastic clamp or other clamping mechanism used in industry to fix the workpiece. It should be noted that the first driving mechanism 300 is preferably a motor, but can also be other rotating driving mechanisms.

[0040] In some embodiments of the present invention, the floating sand net 110 includes a supporting mesh plate 112 and a floating sand film 111 laid on the upper end surface of the supporting mesh plate 112. The floating sand film 111 is used to hold polishing sand grains 140. The ventilation holes 113 are evenly distributed on the floating sand film 111, that is, the floating sand film 111 is a mesh membrane structure, and the membrane holes of the mesh membrane are smaller than the particle size of the polishing sand grains 140. The supporting mesh plate 112 is a mesh plate, which is used to support the floating sand film 111 structure. The supporting mesh plate 112 is evenly distributed with flow holes 114. The aperture of the flow holes 114 is larger than the aperture of the ventilation holes 113, so that the floating sand airflow passes through the ventilation holes 113, which guides the floating sand airflow. Since most of the mesh membranes are relatively soft, it is necessary to set up the supporting mesh plate 112 to support the floating sand film 111 and prevent the polishing sand grains 140 from damaging the floating sand film 111.

[0041] Specifically, the floating sand film 111 can be a cloth, that is, the floating sand film 111 is composed of cloth, or a screen, a polymer material net or other membrane structure, which can also achieve the effect of holding the polishing sand 140 and ventilating. In addition, the floating sand net 110 can also be a mesh plate made of a fixed structure, which can be a plastic plate, a metal plate or other fixed plate, on which the ventilation holes 113 are evenly distributed, which can also achieve the above-mentioned technical effect. The ventilation holes 113 can be set according to the selected floating sand film 111, and can be fine holes on the cloth, sieve holes on the screen, and perforations on the metal net, etc. They can be holes provided on the selected floating sand film 111 itself, and can also be holes designed and processed later according to actual needs.

[0042] In some embodiments of the present invention, the polishing sand 140 used can be polishing sand on the market, or can be made of polishing materials such as fixed ointment, which can be selected according to the type of workpiece to meet the polishing requirements. In addition, the polishing sand 140 can be large or small, and is selected according to the roughness of the polishing surface.

[0043] In some embodiments of the present invention, the air blowing mechanism may be a blower, or may be an existing air blowing mechanism such as a fan, and the air blowing mechanism is connected to the sand blowing chamber 130 through a connecting pipe 410. In addition, in order to control the wind speed and wind pressure of the air blowing mechanism, an anemometer and a pressure sensor are provided on the connecting pipe 410, and in conjunction with a PLC control room, the wind force control requirement is achieved, so that the polishing sand grains 140 can fully cover the workpiece in the working chamber 120 under the action of a suitable floating sand airflow without being separated from the cylinder 100.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A polishing device, characterized in that: include: A cylinder (100), wherein a floating sand net (110) is provided in the cylinder (100), wherein the floating sand net (110) divides the cylinder (100) into a working chamber (120) and a sand removal chamber (130) arranged in an upper and lower manner, and a vent hole (113) is provided on the floating sand net (110); A rotary clamping mechanism, the rotary clamping mechanism comprising a support (700) and a rotary clamp (200) connected to the support (700), the rotary clamp (200) being arranged in the working chamber (120); a first driving mechanism (300), the first driving mechanism (300) being connected to the rotating fixture (200) and driving the rotating fixture (200) to rotate in the working chamber (120); An air blowing mechanism (400), the air blowing mechanism (400) being in communication with the sand removing chamber (130); A vibrator (500) is provided on the side wall of the cylinder (100), and an elastic support assembly (600) is provided at the bottom of the cylinder (100); the vibrator (500) is used to excite the cylinder (100) and make the cylinder (100) vibrate, and the elastic support assembly (600) is used to assist the cylinder (100) in vibrating, so that the cylinder (100) has a tendency to vibrate, and the cylinder (100) is set on the ground through the elastic support assembly (600); the polishing sand (140) is fixedly installed in the cylinder (100) by means of screw connection or bolt connection, and the structure of the cylinder (100) is cylindrical; The elastic support assembly (600) is composed of a plurality of compression springs (610) supporting the cylinder (100), at least three compression springs (610) are provided to form a polygonal stable support structure to support the cylinder (100), a support plate (620) is provided at the bottom of the elastic support assembly (600), and the compression springs (610) are fixedly connected between the cylinder (100) and the support plate (620), so that the cylinder (100) has a tendency to vibrate, and cooperates with the vibration exciter (500) to produce a vibration effect; The support (700) is provided with a lifting mechanism, a second driving mechanism (800) and a third driving mechanism (900); the lifting mechanism is provided with a rotating head (710); the rotating head (710) is laterally extended with a connecting arm (711); the rotating fixture (200) is mounted on the bottom side of the end of the connecting arm (711); the second driving mechanism (800) is connected to the rotating head (710) and drives the rotating head (710) to rotate; the third driving mechanism (900) is connected to the lifting mechanism and drives the lifting mechanism to perform lifting and lowering movements; when taking or placing a workpiece, the lifting mechanism lifts the rotating fixture (200) through the rotating head (710) and the connecting arm (711), so that the rotating fixture (200) leaves the working chamber (120) from the upper end of the cylinder (100), removes the workpiece on the rotating fixture (200) or reloads a new workpiece, and completes the replacement process; The lifting mechanism comprises a guide shaft (720), the rotating head (710) is arranged on the guide shaft (720), the third driving mechanism (900) is a motor, the motor is connected to the guide shaft (720) via a screw pair and drives the guide shaft (720) to lift and lower on the support (700); a limit seat is provided on the support (700) for limiting the lifting movement of the guide shaft (720), the third driving mechanism (900) is connected to the guide shaft (720) via a screw pair and drives the guide shaft (720) to lift and lower on the support (700), and the rotating head is mounted on the end of the guide shaft (720) and realizes the lifting and lowering movement through the guide shaft (720); A revolution shaft (210), wherein a revolution disk (220) is provided on the revolution shaft (210), and the first driving mechanism (300) is connected to the revolution shaft (210) and drives the revolution shaft (210) to rotate; at least one self-rotating shaft (230), the self-rotating shaft (230) being rotatably connected to the public rotating disk (220) and being drivingly connected to the public rotating shaft (210), the self-rotating shaft (230) being provided with at least one workpiece clamping jaw (240), and when the first driving mechanism (300) drives the public rotating shaft (210) to rotate, the public rotating disk (220) rotates around the public rotating shaft (210), and the self-rotating shaft (230) performs self-rotating motion on the public rotating disk (220) relative to the public rotating disk (220); The floating sand net (110) comprises a supporting mesh plate (112) and a floating sand membrane (111) laid on the upper end surface of the supporting mesh plate (112); the ventilation holes (113) are evenly distributed on the floating sand membrane (111); the mesh plate is evenly distributed with flow holes (114); the aperture of the flow holes (114) is larger than the aperture of the ventilation holes (113); and the floating sand membrane (111) is a cloth.

2. The polishing device according to claim 1, characterized in that: Four self-rotating shafts (230) are provided and are evenly arranged on the revolving disk (220) around the revolving shaft (210), and six workpiece clamping jaws (240) are provided on each of the self-rotating shafts (230).

3. The polishing device according to claim 1, characterized in that: The rotation shaft (230) and the revolution shaft (210) are connected via gears.

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