Cup holding device for automatic polishing machine

Abstract

The utility model discloses a cup body clamping device of automatic polishing machine, including clamp subassembly and mounting support, and clamp subassembly includes upper clamp and lower clamp, and upper clamp sets up on mounting support, and upper clamp is located the top of lower clamp, and the adjusting mechanism on mounting support, and the adjusting mechanism includes first mounting seat and second mounting seat, is equipped with first mounting hole on first mounting seat, and first mounting hole has the extension length of X axle direction, and first fastening bolt passes through first mounting hole and is connected with mounting support, is equipped with second mounting hole on second mounting seat, and second mounting hole has the extension length of Y axle direction, and second fastening bolt passes through second mounting hole and is connected with first mounting seat, and upper clamp sets up on second mounting seat, can through with first fastening bolt and / or second fastening bolt loosening, can adjust, need not after repeatedly adjusting with the whole upper clamp is taken down, is convenient for with upper clamp and lower clamp centric position.

Description

Technical Field

[0001] This utility model relates to a cup processing equipment, and more particularly to a cup clamping device for an automatic polishing machine. Background Technology

[0002] A thermos is generally a water container made of ceramic or stainless steel with a vacuum layer. It has a lid on top that is tightly sealed. The vacuum insulation layer can slow down the heat dissipation of the water or other liquid inside, so as to achieve the purpose of keeping it warm. When processing stainless steel thermoses, the body of the thermos needs to be polished and ground. During the polishing and grinding process, the thermos needs to be clamped and fixed.

[0003] For example, the automatic polishing machine thermos cup mouth clamp disclosed in patent CN222360002U includes a bracket with a vertically mounted slide rail. A first slide and a second slide are slidably mounted on the slide rail, both of which are slidably connected to the slide rail via sliders. The second slide is located below the first slide. A lead screw is mounted on the bracket, with a handwheel at the upper end of the lead screw. The first slide is fitted onto the lead screw and threadedly connected to it. Rotating the lead screw by the handwheel can adjust the up-and-down movement of the first slide. A cylinder is fixedly mounted on the first slide, with the piston rod end of the cylinder connected to the second slide. A rotatable upper clamp is mounted on the second slide. An upper clamp located below the upper clamp is mounted on the bracket. When the cup is placed on the lower clamp, the upper clamp moves down to clamp the cup.

[0004] When installing the upper and lower clamps, they may not be concentric. If the upper and lower clamps are not concentric, the cup placed on the lower clamp cannot be properly clamped and fixed. Furthermore, when the upper clamp is pressed down, it will rub against the edge of the cup. The friction between the upper clamp and the edge of the cup will affect the surface quality of the cup. The existing method of concentricity adjustment is to remove the entire second slide from the slider and then adjust the concentricity of the upper and lower clamps by placing shims between the second slide and the slider. This adjustment is inconvenient and inefficient. Utility Model Content

[0005] Based on the aforementioned problem of misalignment between the upper and lower clamps during installation, this utility model provides a cup clamping device for an automatic polishing machine.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a cup-holding device for an automatic polishing machine, including a clamping assembly and a mounting bracket. The clamping assembly includes an upper clamp and a lower clamp. The upper clamp is disposed on the mounting bracket and is located above the lower clamp. The mounting bracket is provided with an adjustment mechanism for adjusting the center of the upper clamp. The adjustment mechanism includes a first mounting seat and a second mounting seat. The first mounting seat is provided with a first mounting hole having an extension length in the X-axis direction. A first fastening bolt passes through the first mounting hole and connects to the mounting bracket to fix the first mounting seat on the mounting bracket. The second mounting seat is provided with a second mounting hole having an extension length in the Y-axis direction. A second fastening bolt passes through the second mounting hole and connects to the first mounting seat to fix the second mounting seat on the first mounting seat. The upper clamp is disposed on the second mounting seat.

[0007] A further preferred embodiment of this utility model is as follows: a first lifting driver is fixedly installed on the second mounting base, and the upper clamp is connected to the first lifting driver and can be driven to lift by the first lifting driver.

[0008] A further preferred embodiment of this utility model is as follows: it also includes a frame, the mounting bracket is disposed on the frame, the mounting bracket can move up and down relative to the frame in the Z-axis direction, the frame is provided with a second lifting driver that can drive the mounting bracket to move, and the lower clamp is mounted on the frame.

[0009] A further preferred embodiment of this utility model is as follows: the clamp assembly has multiple sets, and the mounting bracket is provided with the same number of adjustment mechanisms as the upper clamp, with one adjustment mechanism corresponding to one upper clamp.

[0010] A further preferred embodiment of this utility model is as follows: multiple upper clamps are arranged in a line on the mounting bracket, and lower clamps are arranged in a line below the upper clamps.

[0011] A further preferred embodiment of this utility model is as follows: the upper clamp can rotate relative to the mounting bracket, the lower clamp is rotatably mounted on the frame, and the frame is provided with a rotary drive mechanism for driving the lower clamp to rotate.

[0012] A further preferred embodiment of this utility model is as follows: the lower clamp is rotatably mounted on the frame via a first rotating shaft, and the rotary drive mechanism includes a first drive motor, a first active synchronous pulley, a first driven synchronous pulley, and a first synchronous belt. The first active synchronous pulley is connected to the output shaft of the first drive motor, the first driven synchronous pulley is connected to the first rotating shaft, and the first active synchronous pulley and the first driven synchronous pulley are connected by the first synchronous belt.

[0013] A further preferred technical solution of this utility model is: the first lifting driver is a lifting cylinder, and the upper clamp is connected to the piston rod of the lifting cylinder, and the upper clamp can rotate relative to the piston rod of the lifting cylinder.

[0014] A further preferred embodiment of this utility model is as follows: the first mounting base is placed on the upper surface of the mounting bracket, the upper surface of the mounting bracket is provided with a first connecting hole corresponding to the first mounting hole, the first fastening bolt is threadedly connected to the first connecting hole, the second mounting base is placed on the upper surface of the first mounting base, the upper surface of the first mounting base is provided with a second connecting hole corresponding to the second mounting hole, the second fastening bolt is threadedly connected to the second connecting hole, the first mounting base and the mounting bracket are respectively provided with a first through hole and a second through hole, the second mounting base extends downward from the first through hole and the second through hole to the bottom of the mounting bracket, the first through hole on the first mounting base has space in the Y-axis direction for the second mounting base to move relative to the first mounting base, the inner wall of the first through hole restricts the movement of the second mounting base relative to the first mounting base in the X-axis direction, the second through hole on the mounting bracket has space in the X-axis and Y-axis directions for the second mounting base to move relative to the mounting bracket, and the upper clamp is located below the mounting bracket.

[0015] A further preferred embodiment of this utility model is as follows: the first mounting base portion protrudes from the edge of the second mounting base, and the first mounting hole is disposed on the protruding portion of the first mounting base.

[0016] Compared with the prior art, the advantage of this utility model is that an adjustment mechanism for adjusting the center of the upper clamp is provided between the upper clamp and the mounting bracket. The adjustment mechanism includes a first mounting base and a second mounting base. The first mounting base has a first mounting hole with an extension length in the X-axis direction. A first fastening bolt passes through the first mounting hole and connects to the mounting bracket to fix the first mounting base on the mounting bracket. When the first fastening bolt is loosened, the first fastening bolt can move relative to the first mounting base in the X-axis direction within the first mounting hole due to the extension length in the X-axis direction of the first mounting hole. The second mounting base has a second mounting hole with an extension length in the Y-axis direction. Two fastening bolts pass through the second mounting hole and connect to the first mounting base, fixing the second mounting base onto the first mounting base. When the second fastening bolt is loosened, the second mounting hole has an extension length in the Y-axis direction, allowing the second fastening bolt to move relative to the second mounting base in the Y-axis direction within the second mounting hole. The upper clamp is set on the second mounting base. When the upper and lower clamps are not concentric, the upper clamp can be adjusted accordingly in the X-axis and / or Y-axis directions by loosening the first and / or second fastening bolts, thereby making the upper and lower clamps concentric. This structure is easy to adjust; adjustment can be made simply by loosening the bolts, without the need to remove the entire upper clamp and adjust it repeatedly. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of a portion at point A;

[0021] Figure 4 for Figure 2 A magnified view of section B;

[0022] Figure 5 A diagram showing the state of the thermos cup when the upper and lower clamps hold the cup body;

[0023] Figure 6 This is a structural diagram of the upper clamp, mounting bracket, and adjustment mechanism. Figure 1 ;

[0024] Figure 7 This is a structural diagram of the upper clamp, mounting bracket, and adjustment mechanism. Figure 2 ;

[0025] Figure 8 A disassembled schematic diagram of the mounting bracket, the first adjusting seat, and the second adjusting seat;

[0026] Figure 9 This is a schematic diagram of the structure of the first adjusting seat;

[0027] Figure 10 This is a schematic diagram of the second adjusting seat.

[0028] In the diagram: 1. Frame; 2. Rotary drive mechanism; 3. Lower clamp; 4. Stand; 5. Mounting bracket; 6. Upper clamp; 7. First lifting driver; 8. Second lifting driver; 9. Second rotating shaft; 10. First mounting base; 11. Second mounting base; 12. Mounting bracket; 13. Second through hole; 14. Adapter base; 15. Channel; 16. First through hole; 17. First drive motor; 18. First driving synchronous pulley; 19. First driven synchronous pulley; 20. First synchronous belt; 21. First rotating shaft; 22. Body of the thermos cup; 23. First mounting hole; 24. Second mounting hole; 25. Adjustment mechanism; 26. First connecting hole; 27. Second connecting hole; 28. Mounting plate; 29. ​​Cylinder. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0030] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0031] Figures 1-10 As shown, the cup-holding device of the automatic polishing machine includes a clamping assembly and a mounting bracket 5. The clamping assembly includes an upper clamp 6 and a lower clamp 3. The upper clamp 6 is mounted on the mounting bracket 5 and is located above the lower clamp 3. The mounting bracket 5 is provided with an adjustment mechanism 25 for adjusting the center of the upper clamp 6. The adjustment mechanism 25 includes a first mounting seat 10 and a second mounting seat 11. The first mounting seat 10 has a first mounting hole 23 with an extension length in the X-axis direction. A first fastening bolt passes through the first mounting hole 23 and connects to the mounting bracket 5 to fix the first mounting seat 10 to the mounting bracket 5. The second mounting seat 11 has a second mounting hole 24 with an extension length in the Y-axis direction. A second fastening bolt passes through the second mounting hole 24 and connects to the first mounting seat 10 to fix the second mounting seat 11 to the first mounting seat 10. The upper clamp 6 is mounted on the second mounting seat 11. Both the first mounting hole 23 and the second mounting hole 24 are oblong holes.

[0032] By opening a first mounting hole 23 on the first mounting base 10, the first mounting hole 23 having a length for the first fastening bolt to move inward along the X-axis direction, and opening a second mounting hole 24 on the second mounting base 11, the second mounting hole 24 having a length for the second fastening bolt to move inward along the Y-axis direction, the position of the upper clamp 6 can be adjusted in both the X-axis and Y-axis directions. When the upper clamp 6 and the lower clamp 3 are not concentric, the upper clamp 6 can be adjusted accordingly in the X-axis and / or Y-axis directions by loosening the first fastening bolt and / or the second fastening bolt, thereby making the upper clamp 6 and the lower clamp 3 concentric. This structure is easy to adjust; adjustment can be made simply by loosening the bolts, without having to disassemble the entire upper clamp 6 for repeated adjustments.

[0033] When the upper clamp 6 needs to be adjusted in the X-axis direction, the first fastening bolt is loosened but not unscrewed. The first fastening bolt limits the first mounting seat 10, allowing the first mounting seat 10 to move relative to the mounting bracket 5 in the X-axis direction without separating the two. Moving the first mounting seat 10 along the X-axis direction causes the second mounting seat 11 and the upper clamp 6 to move together, thus achieving the effect of adjusting the upper clamp 6. When the upper clamp 6 needs to be adjusted in the Y-axis direction, the second fastening bolt is loosened but not unscrewed. The second fastening bolt limits the second mounting seat 11, allowing the second mounting seat 11 to move relative to the first mounting seat 10 in the Y-axis direction without separating the two. Moving the second mounting seat 11 along the Y-axis direction causes the upper clamp 6 to move together, thus achieving the effect of adjusting the upper clamp 6.

[0034] The upper clamp 6 and lower clamp 3 can be aligned concentrically using a concentric alignment device. For example, a conventional concentric alignment method involves setting up a concentric rod with positioning parts on both sides that mate with the upper clamp 6 and lower clamp 3. Since the positioning parts at both ends of the concentric rod are concentric, the lower end of the concentric rod is first positioned to mate with the lower clamp 3, making the lower clamp 3 concentric with the concentric rod. Then, the position of the upper clamp 6 along the X-axis and / or Y-axis is adjusted to mate with the positioning parts of the concentric rod, making the upper clamp 6 also concentric with the concentric rod. This achieves concentricity between the upper clamp 6 and lower clamp 3. After adjustment, the first and second fastening bolts are tightened to fix the position of the upper clamp 6. The positioning parts can be positioning grooves that match the upper clamp 6 and lower clamp 3.

[0035] Figure 2 , Figure 3 , Figures 8-10As shown, the first mounting base 10 is placed on the upper surface of the mounting bracket 5. The upper surface of the mounting bracket 5 has a first connecting hole 26 corresponding to the first mounting hole 23. A first fastening bolt connects to the first connecting hole 26 to fix the first mounting base 10 onto the mounting bracket 5. The second mounting base 11 is placed on the upper surface of the first mounting base 10. The upper surface of the first mounting base 10 has a second connecting hole 27 corresponding to the second mounting hole 24. A second fastening bolt connects to the second connecting hole 27 to fix the second mounting base 11 onto the first mounting base 10. The first mounting base 10 and the mounting bracket 5 each have a connection hole for the first mounting hole 24. The second mounting base 11 passes through the first through hole 16 and the second through hole 13. The second mounting base 11 extends downward from the first through hole 16 and the second through hole 13 to the bottom of the mounting bracket 5. The first through hole 16 on the first mounting base 10 has space in the Y-axis direction for the second mounting base 11 to move relative to the first mounting base 10. The inner wall of the first through hole 16 restricts the movement of the second mounting base 11 relative to the first mounting base 10 in the X-axis direction. The second through hole 13 on the mounting bracket 5 has space in the X-axis and Y-axis directions for the second mounting base 11 to move relative to the mounting bracket 5. The upper clamp 6 is located below the mounting bracket 5.

[0036] Figure 7 As shown, the first mounting base 10 protrudes from the edge of the second mounting base 11, and the first mounting hole 23 is provided on the protruding part of the first mounting base 10.

[0037] The second mounting base 11 includes a mounting plate 28 and a cylinder 29 fixed below the mounting plate 28. The mounting plate 28 is stacked on the first mounting base 10, and the cylinder 29 passes downward through the first through hole 16 and the second through hole 13. The aforementioned second mounting hole 24 is opened on the mounting plate 28. The four corners of the mounting plate 28 are provided with the second mounting hole 24. The four corners of the first mounting base 10 are provided with the first mounting hole 23. The four corners of the first mounting base 10 protrude from the mounting plate 28, which facilitates the installation and adjustment of the first fastening bolt.

[0038] The first lifting driver 7 is fixedly installed on the second mounting base 11. The upper clamp 6 is connected to the first lifting driver 7 and can be driven to lift by the first lifting driver 7, so that the upper clamp 6 cooperates with the lower clamp 3 to clamp and position the cup body 22 of the thermos.

[0039] Figure 5 , Figure 6 As shown, the cup clamping device also includes a frame 1, a mounting bracket 5 is mounted on the frame 1, the mounting bracket 5 can move up and down relative to the frame 1 in the Z-axis direction, the frame 1 is provided with a second lifting driver 8 that can drive the mounting bracket 5 to move, and the lower clamp 3 is mounted on the frame 1.

[0040] By setting the upper clamp 6 on the mounting bracket 5 and having the mounting bracket 5 drive the upper clamp 6 to move up and down, the initial height position of the upper clamp 6 can be adjusted so that the upper clamp 6 and the lower clamp 3 can clamp cups of different heights. When it is necessary to clamp and fix the cup body 22 of the thermos, the first lifting driver 7 drives the corresponding upper clamp 6 to move down to cooperate with the lower clamp 3 to clamp and position the cup body 22 of the thermos.

[0041] A vertical frame 4 is fixed on the frame 1, and a mounting bracket 5 is mounted on the vertical frame 4 and can move up and down relative to the vertical frame 4 in the Z-axis direction. The second lifting drive 8 is a conventional linear drive mechanism, such as a motor screw module or a gear and rack module. For example, as shown in the attached diagram, the second lifting drive 8 is a motor-driven screw jack, which is fixed to the top of the vertical frame 4 and connected to the mounting bracket 5. Electrical control facilitates adjustment of the height of the upper clamp 6. For example, a screw jack from the brand Borui, model SWL.

[0042] Figure 3 , Figure 4 As shown, the upper clamp 6 can rotate relative to the mounting bracket 5, and the lower clamp 3 is rotatably mounted on the frame 1. The frame 1 is provided with a rotary drive mechanism 2 that drives the lower clamp 3 to rotate.

[0043] The lower clamp 3 is rotatably mounted on the frame 1 via the first rotating shaft 21. The rotary drive mechanism 2 includes a first drive motor 17, a first driving synchronous pulley 18, a first driven synchronous pulley 19, and a first synchronous belt 20. The first driving synchronous pulley 18 is connected to the output shaft of the first drive motor 17, the first driven synchronous pulley 19 is connected to the first rotating shaft 21, and the first driving synchronous pulley 18 and the first driven synchronous pulley 19 are connected by the first synchronous belt 20.

[0044] Preferably, the first lifting drive 7 is a lifting cylinder, and the upper clamp 6 is connected to the piston rod of the lifting cylinder. The upper clamp 6 can rotate relative to the piston rod of the lifting cylinder.

[0045] Figure 8 As shown, an adapter 14 is provided between the lifting cylinder and the upper clamp 6. The adapter 14 is connected to the piston rod of the lifting cylinder. The extension and retraction of the piston rod of the lifting cylinder can drive the adapter 14 to move up and down in the Z-axis direction. A second rotating shaft 9 is rotatably connected to the adapter 14 through a bearing. The upper clamp 6 is connected to the second rotating shaft 9. The second mounting base 11 is provided with a channel 15 for the adapter 14 to move within it.

[0046] A mounting bracket 12 is fixed on the second mounting base 11, and the lifting cylinder is fixed on the mounting bracket 12.

[0047] When polishing the body 22 of the thermos, the rotary drive mechanism 2 drives the lower clamp 3 to rotate, so that the body 22 of the thermos can rotate synchronously, so that the entire circle of the body 22 of the thermos can be polished.

[0048] The piston rod of the lifting cylinder is fixed with a connecting plate for connecting the adapter 14. A guide post is fixed on the connecting plate. The cylinder body of the lifting cylinder is provided with a guide hole that slides with the guide post. The sliding fit between the guide hole and the guide post makes the extension and retraction of the piston rod of the lifting cylinder more stable and less prone to shaking.

[0049] Figures 1-6 As shown, the clamp assembly has multiple sets, and the mounting bracket 5 is provided with the same number of adjustment mechanisms 25 as the upper clamp 6. One adjustment mechanism 25 corresponds to one upper clamp 6.

[0050] Multiple upper clamps 6 are arranged in a row on the mounting bracket 5, and lower clamps 3 are arranged in a row below the upper clamps 6 in a corresponding row.

[0051] Preferably, the clamping assembly is provided with four sets, and the mounting bracket 5 is provided with four sets of adjustment mechanisms 25 to adjust the center of the four upper clamps 6 respectively. Each set of adjustment mechanisms 25 has a first lifting driver 7 installed on the second mounting seat 11 to drive the upper clamps 6 to lift and clamp.

[0052] The second lifting drive 8 is connected to the middle of the mounting bracket 5. Two sets of adjustment mechanisms 25 are distributed on the left and right sides of the mounting bracket 5. The above-mentioned electronic control method facilitates the synchronous adjustment of the height position of the four upper clamps 6.

[0053] The frame 1 is equipped with two first drive motors 17. The output shafts of the first drive motors 17 are connected to two first active synchronous pulleys 18. The two first active synchronous pulleys 18 are respectively connected to two first driven synchronous pulleys 19 through a first synchronous belt 20, so that one first drive motor 17 drives the two lower clamps 3 to rotate.

[0054] The above describes the cup clamping device for the automatic polishing machine provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from its principle, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A cup-holding device for an automatic polishing machine, comprising a clamping assembly and a mounting bracket, the clamping assembly including an upper clamp and a lower clamp, the upper clamp being disposed on the mounting bracket and positioned above the lower clamp, characterized in that, The mounting bracket is provided with an adjustment mechanism for adjusting the center of the upper clamp. The adjustment mechanism includes a first mounting seat and a second mounting seat. The first mounting seat has a first mounting hole with an extension length in the X-axis direction. A first fastening bolt passes through the first mounting hole and connects to the mounting bracket to fix the first mounting seat on the mounting bracket. The second mounting seat has a second mounting hole with an extension length in the Y-axis direction. A second fastening bolt passes through the second mounting hole and connects to the first mounting seat to fix the second mounting seat on the first mounting seat. The upper clamp is disposed on the second mounting seat.

2. The cup clamping device of the automatic polishing machine according to claim 1, characterized in that, The second mounting base is fixedly mounted with a first lifting driver, and the upper clamp is connected to the first lifting driver and can be driven to lift by the first lifting driver.

3. The cup clamping device of the automatic polishing machine according to claim 2, characterized in that, It also includes a frame, the mounting bracket is mounted on the frame, the mounting bracket can move up and down relative to the frame in the Z-axis direction, the frame is provided with a second lifting drive that can drive the mounting bracket to move, and the lower clamp is mounted on the frame.

4. The cup clamping device for an automatic polishing machine according to claim 1, 2, or 3, characterized in that, The clamp assembly has multiple sets, and the mounting bracket is provided with the same number of adjustment mechanisms as the upper clamp, with one adjustment mechanism corresponding to one upper clamp.

5. The cup clamping device of the automatic polishing machine according to claim 4, characterized in that, Multiple upper clamps are arranged in a row on the mounting bracket, and lower clamps are set below the upper clamps one by one, also arranged in a row.

6. The cup clamping device of the automatic polishing machine according to claim 3, characterized in that, The upper clamp can rotate relative to the mounting bracket, and the lower clamp is rotatably mounted on the frame. The frame is provided with a rotary drive mechanism to drive the lower clamp to rotate.

7. The cup-holding device of the automatic polishing machine according to claim 6, characterized in that, The lower clamp is rotatably mounted on the frame via a first rotating shaft. The rotary drive mechanism includes a first drive motor, a first active synchronous pulley, a first driven synchronous pulley, and a first synchronous belt. The first active synchronous pulley is connected to the output shaft of the first drive motor, the first driven synchronous pulley is connected to the first rotating shaft, and the first active synchronous pulley and the first driven synchronous pulley are connected by the first synchronous belt.

8. The cup-holding device of the automatic polishing machine according to claim 6, characterized in that, The first lifting actuator is a lifting cylinder, and the upper clamp is connected to the piston rod of the lifting cylinder. The upper clamp can rotate relative to the piston rod of the lifting cylinder.

9. The cup clamping device of the automatic polishing machine according to claim 1, characterized in that, The first mounting base is placed on the upper surface of the mounting bracket. The upper surface of the mounting bracket is provided with a first connecting hole corresponding to the first mounting hole. A first fastening bolt is threadedly connected to the first connecting hole. The second mounting base is placed on the upper surface of the first mounting base. The upper surface of the first mounting base is provided with a second connecting hole corresponding to the second mounting hole. A second fastening bolt is threadedly connected to the second connecting hole. The first mounting base and the mounting bracket are respectively provided with a first through hole and a second through hole. The second mounting base extends downward from the first through hole and the second through hole to the bottom of the mounting bracket. The first through hole on the first mounting base has space in the Y-axis direction for the second mounting base to move relative to the first mounting base. The inner wall of the first through hole restricts the movement of the second mounting base relative to the first mounting base in the X-axis direction. The second through hole on the mounting bracket has space in the X-axis and Y-axis directions for the second mounting base to move relative to the mounting bracket. The upper clamp is located below the mounting bracket.

10. The cup clamping device for an automatic polishing machine according to claim 1 or 9, characterized in that, The first mounting base protrudes from the edge of the second mounting base, and the first mounting hole is provided on the protruding part of the first mounting base.

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