Polishing device

Abstract

The utility model relates to the technical field of grinding machining, in particular to a grinding device. The polishing device comprises a cover plate; the driving mechanism comprises a supporting plate arranged adjacent to the cover plate and a driving assembly rotationally connected to the supporting plate, and the driving assembly is in driving connection with the cover plate; the plurality of follow-up assemblies are all arranged between the supporting plate and the cover plate, and the plurality of follow-up assemblies are used for connecting the supporting plate and the cover plate and are matched with the driving mechanism to drive the cover plate to move; the polishing piece is detachably connected to the side, away from the supporting plate, of the cover plate; the driving assembly is used for driving the cover plate to swing in the plane where the cover plate is located, so that the cover plate drives the grinding piece to swing, and then the grinding piece grinds the workpiece. The grinding device can grind the workpiece in a rubbing mode, fixed lines formed on the surface of the workpiece after the workpiece is ground are avoided, the utilization rate of abrasive paper is increased, and the grinding effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of grinding processing, and in particular to a grinding device. Background Art

[0002] During the actual machining process, metal workpieces often need to be polished to eliminate surface defects (such as burrs and notches) and improve the surface flatness. Existing polishing devices generally use a motor to drive the grinding head and sandpaper to rotate to polish the surface defects of the workpiece. However, this method of polishing the workpiece will form fixed patterns on the workpiece surface, such as sunburst patterns. In addition, the part of the sandpaper close to the rotation center has a low rotation speed, resulting in poor polishing effect. The part of the sandpaper away from the rotation center needs to be used for further polishing, resulting in low sandpaper utilization. Utility Model Content

[0003] In view of the above, it is necessary to propose a grinding device that can perform rubbing grinding on the workpiece to avoid the formation of fixed lines on the surface of the workpiece after grinding, and to improve the utilization rate of sandpaper and enhance the grinding effect.

[0004] An embodiment of the present application provides a grinding device, comprising: a cover plate; a driving mechanism, comprising a support plate arranged adjacent to the cover plate and a driving assembly rotatably connected to the support plate, the driving assembly being drivably connected to the cover plate; a plurality of follower assemblies, all arranged between the support plate and the cover plate, the plurality of follower assemblies being used to connect the support plate and the cover plate, and cooperate with the driving mechanism to drive the cover plate to move; and a grinding piece, detachably connected to a side of the cover plate facing away from the support plate; wherein the driving assembly is used to drive the cover plate to swing within the plane where the cover plate is located, so that the cover plate drives the grinding piece to swing, and thereby the grinding piece grinds the workpiece.

[0005] The above-mentioned grinding device can be fixedly connected to an external driving device through the support plate in the driving mechanism to fix the grinding device, and can be connected to the output end of the external driving device through the driving component in the driving mechanism. The support plate is connected to the cover plate through multiple follower components, and the driving component is also connected to the cover plate driving. The driving component can drive the cover plate to swing within the plane where the cover plate is located. The grinding piece connected to the cover plate swings with the cover plate and can grind the workpiece, reducing the fixed lines formed on the workpiece surface after grinding the workpiece. The above-mentioned grinding device can perform rubbing grinding on the workpiece, and no fixed lines will be formed on the workpiece surface after grinding the workpiece, and the sandpaper utilization rate is high, and the grinding effect is good.

[0006] In some embodiments, the driving assembly includes a rotating shaft, a driving wheel, an internal gear plate and a planetary gear, the rotating shaft is rotatably connected to the support plate, the driving wheel is connected to one end of the rotating shaft close to the cover plate, the internal gear plate is fixedly connected to the cover plate, and the internal gear plate surrounds the driving wheel and is spaced apart from the driving wheel, the planetary gear is arranged between the driving wheel and the internal gear plate and is respectively engaged with the driving wheel and the internal gear plate; wherein, when the rotating shaft rotates, it drives the driving wheel to rotate, the driving wheel drives the planetary gear to rotate around the driving wheel, and the planetary gear drives the internal gear plate to swing around the rotating shaft, thereby driving the cover plate and the grinding part to swing.

[0007] In some embodiments, a ring groove is provided on the side of the support plate facing the cover plate, the ring groove is arranged around the rotating shaft and coaxially with the rotating shaft, and the radius of the ring groove is the same as the distance between the axis of the driving wheel and the axis of the planetary wheel; the planetary wheel is provided with a sliding shaft, the sliding shaft extends out of the side of the planetary wheel facing the support plate and is slidably set in the ring groove.

[0008] In some embodiments, the drive assembly further includes a gasket, which is disposed on a side of the drive wheel away from the support plate and connected to the rotating shaft, and the center of the gasket is not in the same straight line as the axis of the rotating shaft.

[0009] In some embodiments, the drive assembly further includes a first bearing, which is sleeved on the rotating shaft, an inner ring of the first bearing is fixedly connected to the rotating shaft, and an outer ring of the first bearing is fixedly connected to the support plate.

[0010] In some embodiments, the drive assembly also includes a limiting ring, which is connected to the side of the support plate facing the cover plate and is arranged around the rotating shaft, and the limiting ring is arranged on the side of the first bearing facing the cover plate, and the limiting ring is used to cooperate with the support plate to limit the first bearing.

[0011] In some embodiments, the follower assembly includes a connecting shaft, and a connecting shaft mounting hole for mounting the connecting shaft is provided on the support plate, and the connecting shaft and the connecting shaft mounting hole are eccentrically arranged; the follower assembly also includes a connecting member, which is connected to the side of the cover plate facing the support plate, and the end of the connecting member close to the driving assembly is rotatably connected to the corresponding connecting shaft, and the end of the connecting member away from the driving assembly is fixedly connected to the cover plate.

[0012] In some embodiments, the connecting shaft is an eccentric shaft, including a main body, a concentric part and an eccentric part. The concentric part and the eccentric part are respectively arranged on opposite sides of the main body. The concentric part is rotatably connected to the support plate, and the eccentric part is rotatably connected to the connecting member.

[0013] In some embodiments, the follower assembly further includes a second bearing, the second bearing is sleeved on the concentric portion, and the outer ring of the second bearing is fixedly connected to the support plate.

[0014] In some embodiments, the polishing device further includes a connecting plate, which is fixedly connected to a side of the support plate facing away from the cover plate, and the connecting plate is used to connect to an external driving device to fix the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of the grinding device provided in an embodiment of the present application.

[0016] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the grinding device shown.

[0017] Figure 3 for Figure 2 Another perspective schematic diagram of the exploded structure of the grinding device shown.

[0018] Figure 4 for Figure 1 The grinding device is shown in a top view with the remaining structure of the grinding element and the cover plate removed.

[0019] Figure 5 for Figure 1 The grinding device is shown in a cross-sectional view along the V-V direction.

[0020] Description of main component symbols

[0021] Grinding device 100

[0022] Cover 10

[0023] First cavity 11

[0024] Driving mechanism 20

[0025] Support plate 21

[0026] Ring groove 211

[0027] Through hole 212

[0028] Second cavity 213

[0029] Drive assembly 22

[0030] Rotating shaft 221

[0031] Drive wheel 222

[0032] Internal gear plate 223

[0033] Planetary gear 224

[0034] Sliding shaft 2241

[0035] Gasket 225

[0036] First bearing 226

[0037] Limiting ring 227

[0038] Seal 228

[0039] Follower assembly 30

[0040] Connecting shaft 31

[0041] Main body part 311

[0042] Concentric Department 312

[0043] Eccentric portion 313

[0044] Connector 32

[0045] Second bearing 33

[0046] Polishing parts 40

[0047] Connecting plate 50 DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below, and examples of the embodiments 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 application, and should not be understood as limiting the present application.

[0049] In the description of this application, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In addition, in the description of this application, it should be noted that the meaning of "plurality" is two or more, unless otherwise expressly and specifically defined.

[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0051] The embodiments of the present application are further described below with reference to the accompanying drawings.

[0052] See Figure 1 and Figure 2 The present invention provides a grinding device 100 for grinding a workpiece (not shown). The workpiece may be a mobile phone case, a middle frame, or other structural parts that need to be polished. The grinding device 100 includes a cover plate 10, a drive mechanism 20, a plurality of follower assemblies 30, and a grinding member 40.

[0053] Specifically, the cover plate 10 may be a plate-shaped structure to facilitate connection with the polishing piece 40 .

[0054] The drive mechanism 20 includes a support plate 21 disposed adjacent to the cover plate 10 and a drive assembly 22 rotatably connected to the support plate 21. The drive assembly 22 is drivably connected to the cover plate 10. The support plate 21 may be a plate-shaped structure disposed adjacent to the cover plate 10. The plate-shaped support plate 21 provides stable support and facilitates fixed connection to an external drive device (not shown).

[0055] Multiple follower assemblies 30 are disposed between the support plate 21 and the cover plate 10. The follower assemblies 30 are used to connect the support plate 21 and the cover plate 10 and cooperate with the drive mechanism 20 to drive the cover plate 10 to move. The number of follower assemblies 30 can be two, four, six, etc., as long as they can stably connect the cover plate 10 and the support plate 21 when the drive assembly 22 drives the cover plate 10 to move. The specific number is not limited here.

[0056] A polishing member 40 is detachably connected to the side of the cover plate 10 facing away from the support plate 21. The polishing member 40 can be a material such as sandpaper for polishing a workpiece. In this embodiment, the polishing member 40 is foam sandpaper. The polishing member 40 is detachably connected to the cover plate 10, such as with Velcro, to facilitate replacement of the polishing member 40.

[0057] The drive assembly 22 is used to drive the cover plate 10 to swing within the plane in which the cover plate 10 is located, so that the cover plate 10 drives the polishing member 40 to swing, thereby causing the polishing member 40 to polish the workpiece. Specifically, the drive assembly 22 drives the cover plate 10 to orbit around the centerline of the support plate 21. The cover plate 10 and the support plate 21 are connected by multiple follower assemblies 30. Therefore, the distance between the cover plate 10 and the support plate 21 remains unchanged during movement. The cover plate 10 only swings within its plane, thereby driving the polishing member 40 to swing, so that the polishing member 40 polishes the workpiece through swinging.

[0058] The grinding device 100 provided in the embodiment of the present application can be fixedly connected to an external driving device through the support plate 21 in the driving mechanism 20 to fix the grinding device 100, and can be connected to the output end of the external driving device through the driving component 22 in the driving mechanism 20. The support plate 21 is connected to the cover plate 10 through multiple follower components 30, and the driving component 22 is also driven and connected to the cover plate 10. The driving component 22 can drive the cover plate 10 to swing within the plane where the cover plate 10 is located. The grinding member 40 connected to the cover plate 10 swings with the cover plate 10 and can grind the workpiece, reducing the fixed lines formed on the surface of the workpiece after grinding the workpiece. The grinding device 100 provided in the embodiment of the present application can perform rubbing grinding on the workpiece, and no fixed lines will be formed on the surface of the workpiece after grinding the workpiece, and the sandpaper utilization rate is high and the grinding effect is good.

[0059] In some embodiments, see Figure 2 、 Figure 3 and Figure 4 The drive assembly 22 includes a rotating shaft 221, a driving wheel 222, an internal gear plate 223, and planetary gears 224. The rotating shaft 221 is rotatably connected to the support plate 21. The driving wheel 222 is connected to the end of the rotating shaft 221 near the cover plate 10. The internal gear plate 223 is fixedly connected to the cover plate 10 and surrounds the driving wheel 222 and is spaced apart from the driving wheel 222. The planetary gears 224 are disposed between the driving wheel 222 and the internal gear plate 223 and mesh with the driving wheel 222 and the internal gear plate 223, respectively. When the rotating shaft 221 rotates, it drives the driving wheel 222 to rotate. The driving wheel 222 drives the planetary gears 224 to rotate around the driving wheel 222. The planetary gears 224 drive the internal gear plate 223 to swing around the rotating shaft 221, thereby driving the cover plate 10 and the polishing member 40 to swing.

[0060] It is understood that to facilitate the connection between the rotating shaft 221 and the support plate 21, the support plate 21 may be provided with a through hole 212, into which the rotating shaft 221 is inserted and rotatably connected to the support plate 21. The rotating shaft 221 is connected to the output end of an external drive device, which drives the rotating shaft 221 to rotate. The drive wheel 222 may be a gear, the internal gear plate 223 may be a plate-shaped structure with an internal ring gear, and the planetary gears 224 may be gears. It is understood that because the planetary gears 224 mesh with both the drive wheel 222 and the internal gear plate 223, when the drive wheel 222 rotates, the planetary gears 224 rotate around the drive wheel 222. During the rotation of the planetary gears 224 around the drive wheel 222, the position where the internal gear plate 223 meshes with the planetary gears 224 moves away from the drive wheel 222, causing the internal gear plate 223 to swing around the drive wheel 222, thereby driving the cover plate 10 and the polishing member 40 to swing.

[0061] In some embodiments, see Figure 2 、 Figure 4 and Figure 5 A ring groove 211 is provided on the side of the support plate 21 facing the cover plate 10. The ring groove 211 is arranged around the rotating shaft 221 and is coaxial with the rotating shaft 221. The radius of the ring groove 211 is the same as the distance between the axis of the driving wheel 222 and the axis of the planetary gear 224; the planetary gear 224 is provided with a sliding shaft 2241, which extends out from the side of the planetary gear 224 facing the support plate 21 and is slidably set in the ring groove 211. It can be understood that when the driving wheel 222 drives the planetary wheel 224 to rotate around the axis of the driving wheel 222, the axis of the planetary wheel 224 makes a circular motion around the axis of the driving wheel 222, and the annular groove 211 corresponds to the motion trajectory of the axis of the planetary wheel 224, that is, the radius of the annular groove 211 is the same as the distance between the axis of the driving wheel 222 and the axis of the planetary wheel 224. In this way, when the driving wheel 222 drives the planetary wheel 224 to move, the sliding shaft 2241 moves along the annular groove 211, which can further limit the motion trajectory of the planetary wheel 224, thereby improving the stability of the planetary wheel 224 during movement.

[0062] In some embodiments, see Figure 2 and Figure 4The driving assembly 22 further includes a gasket 225. The gasket 225 is disposed on the side of the driving wheel 222 facing away from the support plate 21 and connected to the rotating shaft 221. The center of the gasket 225 is not in the same straight line as the axis of the rotating shaft 221. By providing the gasket 225, the connection stability between the driving wheel 222 and the rotating shaft 221 can be improved, and the driving wheel 222 can be prevented from being separated from the rotating shaft 221. The structure of the gasket 225 can be roughly eccentric, such as a fan-shaped or teardrop-shaped structure, so that the center of the gasket 225 is misaligned with the axis of the rotating shaft 221. When the rotating shaft 221 drives the driving wheel 222 to rotate, the driving wheel 222 can vibrate, and then the planetary gear 224 and the inner gear plate 223 drive the cover plate 10 and the grinding member 40 to vibrate, further improving the effect of the grinding member 40 on grinding the workpiece.

[0063] In some embodiments, see Figure 2 and Figure 5 The drive assembly 22 further includes a first bearing 226, which is sleeved on the rotating shaft 221. The inner ring of the first bearing 226 is fixedly connected to the rotating shaft 221, and the outer ring of the first bearing 226 is fixedly connected to the support plate 21. The provision of the first bearing 226 can effectively reduce friction between the rotating shaft 221 and the support plate 21, thereby increasing the service life of the rotating shaft 221 and the support plate 21, and also improving the stability of the rotating shaft 221 during rotation.

[0064] In some embodiments, see Figure 2 and Figure 5 The drive assembly 22 further includes a limiting ring 227, which is connected to the side of the support plate 21 facing the cover plate 10 and surrounds the rotating shaft 221. The limiting ring 227 is disposed on the side of the first bearing 226 facing the cover plate 10. The limiting ring 227 cooperates with the support plate 21 to limit the position of the first bearing 226. The limiting ring 227 can limit the position of the first bearing 226, thereby limiting the position of the rotating shaft 221, preventing the rotating shaft 221 from moving along its axis during movement, which could cause the drive wheel 222 and the planetary gears 224 to misalign.

[0065] In some embodiments, see Figure 2 、 Figure 3 and Figure 4 The follower assembly 30 includes a connecting shaft 31. The support plate 21 is provided with a connecting shaft 31 mounting hole for mounting the connecting shaft 31. The connecting shaft 31 is eccentrically arranged with respect to the connecting shaft 31 mounting hole. The follower assembly 30 also includes a connecting member 32. The connecting member 32 is connected to the side of the cover plate 10 facing the support plate 21. The end of the connecting member 32 closest to the driving assembly 22 is rotationally connected to the corresponding connecting shaft 31, and the end of the connecting member 32 away from the driving assembly 22 is fixedly connected to the cover plate 10.

[0066] The connecting piece 32 can be rod-shaped, and the number can be two, four, six, etc. It can be understood that in order to connect the cover plate 10 to the grinding piece 40 with a larger area, the area of the cover plate 10 can be increased, so the area of the cover plate 10 can be larger than the area of the support plate 21. At this time, if the cover plate 10 and the support plate 21 are directly connected through the connecting shaft 31, the position where the connecting shaft 31 connects the cover plate 10 will be close to the middle of the cover plate 10, resulting in insufficient support for the edge position of the cover plate 10, thereby affecting the effect of the grinding piece 40 located at the edge position of the cover plate 10 when grinding the workpiece. By providing the connecting piece 32, the position where the connecting piece 32 is connected to the cover plate 10 can be close to the edge of the cover plate 10, so as to improve the overall support effect of the cover plate 10, thereby improving the effect of the grinding piece 40 connected to the cover plate 10 when grinding the workpiece.

[0067] In this embodiment, the connecting member 32 can also be a special-shaped structure, such as a π shape, the middle part of the connecting member 32 is connected to multiple connecting shafts 31 on the same side close to the internal gear plate 223, and the protruding end is connected to the cover plate 10.

[0068] In some embodiments, see Figure 2 and Figure 3 The connecting shaft 31 is an eccentric shaft, including a main body 311, a concentric portion 312 and an eccentric portion 313. The concentric portion 312 and the eccentric portion 313 are respectively arranged on opposite sides of the main body 311. The concentric portion 312 is rotatably connected to the support plate 21, and the eccentric portion 313 is rotatably connected to the connecting member 32.

[0069] The main body 311 in the connecting shaft 31 can be a disc-shaped structure, and the concentric portion 312 and the eccentric portion 313 can both be columnar structures. It can be understood that the concentric portion 312 is coaxial with the main body 311, and the axis of the eccentric portion 313 is not in the same straight line as the axis of the concentric portion 312. In this way, when the cover plate 10 swings around the drive wheel 222, the eccentric portion 313 rotates with the cover plate 10 and the connecting member 32, so that the connecting shaft 31 does not affect the movement of the cover plate 10 while connecting the cover plate 10 and the support plate 21. By providing the connecting shaft 31, the cover plate 10 and the support plate 21 can be connected in conjunction with the connecting member 32, and the movement trajectory of the cover plate 10 can be limited to prevent the cover plate 10 from moving excessively, causing the internal gear plate 223 to separate from the planetary gear 224 or the internal gear plate 223 to abut the drive wheel 222.

[0070] In some embodiments, see Figure 2 and Figure 3The follower assembly 30 further includes a second bearing 33, which is sleeved on the concentric portion 312, and the outer ring of the second bearing 33 is fixedly connected to the support plate 21. The provision of the second bearing 33 improves the stability of the rotational connection between the connecting shaft 31 and the support plate 21, while reducing friction between the concentric portion 312 of the connecting shaft 31 and the support plate 21, thereby increasing the service life of the connecting shaft 31 and the support plate 21.

[0071] In some embodiments, see Figure 1 、 Figure 2 and Figure 3 The grinding device 100 further includes a connecting plate 50, which is fixedly connected to the side of the support plate 21 facing away from the cover plate 10. The connecting plate 50 is used to connect an external drive device to fix the support plate 21. In this embodiment, the connecting plate 50 can protrude from opposite sides of the support plate 21 to facilitate connecting the connecting plate 50 to the external drive device. By providing the connecting plate 50, the stability when fixing the support plate 21 can be improved. It can be understood that when the rotating shaft 221 and the rotating shaft of the external drive device are connected, a coupling or other structure is usually installed. This will result in a gap between the support plate 21 and the external drive device. If the connection is made by long bolts or other parts, the support of the support plate 21 will be insufficient, affecting the stability during grinding. By providing the connecting plate 50, the gap between the support plate 21 and the external drive device can be filled to improve the support stability of the support plate 21.

[0072] In this example, see Figure 2 and Figure 5 The support assembly further includes a sealing ring 228, which is disposed between the support plate 21 and the connecting plate 50 and sleeved on the rotating shaft 221. The sealing ring 228 may be a rubber ring or the like. The provision of the sealing ring 228 improves the sealing between the rotating shaft 221 and the support plate 21 and the connecting plate 50, preventing impurities from entering between the rotating shaft 221 and the support plate 21 and the connecting plate 50, or further into the first bearing 226, thereby preventing the rotating shaft 221, the support plate 21, the connecting plate 50, or the first bearing 226 from being worn, thereby increasing the service life.

[0073] In this embodiment, a sealing ring 228 may also be provided between the limiting ring 227 and the rotating shaft 221 to seal the limiting ring 227 and the rotating shaft 221 to prevent impurities from entering the first bearing 226 from between the limiting ring 227 and the rotating shaft 221, thereby improving the service life of the rotating shaft 221 and the first bearing 226.

[0074] In this example, see Figure 2 、 Figure 3 and Figure 5The support plate 21 has a first cavity 11 on the side facing the cover plate 10, and the cover plate 10 has a second cavity 213 on the side facing the support plate 21. The first cavity 11 and the second cavity 213 are used to accommodate the drive wheel 222, the internal gear plate 223, the planetary gears 224, and the follower assembly 30. In this way, the first cavity 11 and the second cavity 213 can accommodate the drive wheel 222, the internal gear plate 223, the planetary gears 224, and the follower assembly 30 between the support plate 21 and the cover plate 10, thereby protecting the drive wheel 222, the internal gear plate 223, the planetary gears 224, and the follower assembly 30, and preventing them from colliding with other objects during use, thereby affecting the operation of the grinding device 100.

[0075] The working process of the grinding device 100 provided in the embodiment of the present application is roughly as follows:

[0076] First, connect the rotating shaft 221 to the output end of the external drive device, and fix the support plate 21 to the outer shell and other structures of the external drive device through the connecting plate 50, and then connect the grinding piece 40 to the side of the cover plate 10 away from the support plate 21, so as to complete the installation of the grinding device 100.

[0077] During grinding, the external drive device drives the rotating shaft 221 to rotate, which in turn drives the driving wheel 222 to rotate. The driving wheel 222 drives the planetary gear 224 to rotate around the driving wheel 222. During the rotation of the planetary gear 224 around the driving wheel 222, the planetary gear 224 pushes the inner gear plate 223 and the position where the planetary gear 224 meshes with the driving wheel 222 to move away from the driving wheel 222, so that the inner gear plate 223 swings around the driving wheel 222. The inner gear plate 223 drives the cover plate 10 to swing, and then the grinding member 40 connected to the cover plate 10 swings to grind the workpiece. During the swinging movement of the cover plate 10, the connecting shaft 31 rotates with the swinging of the cover plate 10, so as to connect the cover plate 10 and the support plate 21 without affecting the movement of the cover plate 10.

[0078] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and all variations that come within the meaning and range of equivalents of the claims are intended to be embraced herein.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A grinding device, characterized in that: include: cover; a driving mechanism comprising a support plate disposed adjacent to the cover plate and a driving assembly rotatably connected to the support plate, the driving assembly being drivingly connected to the cover plate; A plurality of follower assemblies are disposed between the support plate and the cover plate, the plurality of follower assemblies being used to connect the support plate and the cover plate and cooperate with the driving mechanism to drive the cover plate to move; and A polishing piece is detachably connected to the side of the cover plate facing away from the support plate; wherein, The driving assembly is used to drive the cover plate to swing within the plane where the cover plate is located, so that the cover plate drives the grinding piece to swing, and then the grinding piece grinds the workpiece.

2. The grinding device according to claim 1, characterized in that: The driving assembly includes a rotating shaft, a driving wheel, an internal gear plate and planetary gears, wherein the rotating shaft is rotatably connected to the support plate, the driving wheel is connected to one end of the rotating shaft close to the cover plate, the internal gear plate is fixedly connected to the cover plate, and the internal gear plate surrounds the driving wheel and is spaced apart from the driving wheel, the planetary gears are arranged between the driving wheel and the internal gear plate and mesh with the driving wheel and the internal gear plate respectively; wherein, When the rotating shaft rotates, the driving wheel is driven to rotate. The driving wheel drives the planetary gear to rotate around the driving wheel. The planetary gear drives the internal gear plate to swing around the rotating shaft, thereby driving the cover plate and the grinding piece to swing.

3. The grinding device according to claim 2, characterized in that: A ring groove is provided on one side of the support plate facing the cover plate. The ring groove is provided around the rotating shaft and coaxially with the rotating shaft. The radius of the ring groove is the same as the distance between the axis of the driving wheel and the axis of the planetary gear. The planetary wheel is provided with a sliding shaft, and the sliding shaft extends out of the planetary wheel toward the side of the support plate and is slidably arranged in the annular groove.

4. The grinding device according to claim 2, wherein: The driving assembly further includes a gasket, which is arranged on a side of the driving wheel away from the support plate and connected to the rotating shaft, and the center of the gasket is not in the same straight line as the axis of the rotating shaft.

5. The grinding device according to claim 2, wherein: The driving assembly further includes a first bearing, which is sleeved on the rotating shaft, an inner ring of the first bearing is fixedly connected to the rotating shaft, and an outer ring of the first bearing is fixedly connected to the support plate.

6. The grinding device according to claim 5, characterized in that: The drive assembly also includes a limiting ring, which is connected to the side of the support plate facing the cover plate and is arranged around the rotating shaft, and the limiting ring is arranged on the side of the first bearing facing the cover plate, and the limiting ring is used to cooperate with the support plate to limit the first bearing.

7. The grinding device according to claim 1, wherein: The follower assembly includes a connecting shaft, and the support plate is provided with a connecting shaft mounting hole for mounting the connecting shaft, and the connecting shaft is eccentrically arranged with respect to the connecting shaft mounting hole; The follower assembly also includes a connecting member, which is connected to the side of the cover plate facing the support plate. The end of the connecting member close to the driving assembly is rotatably connected to the corresponding connecting shaft, and the end of the connecting member away from the driving assembly is fixedly connected to the cover plate.

8. The grinding device according to claim 7, wherein: The connecting shaft is an eccentric shaft, including a main body, a concentric part and an eccentric part. The concentric part and the eccentric part are respectively arranged on two opposite sides of the main body. The concentric part is rotatably connected to the support plate, and the eccentric part is rotatably connected to the connecting member.

9. The grinding device according to claim 8, characterized in that: The follower assembly further includes a second bearing, which is sleeved on the concentric portion, and an outer ring of the second bearing is fixedly connected to the support plate.

10. The grinding device according to claim 1, wherein: The polishing device further includes a connecting plate, which is fixedly connected to a side of the support plate facing away from the cover plate, and the connecting plate is used to connect to an external driving device to fix the support plate.

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