Grinding and polishing assembly and casting grinding and polishing equipment

Abstract

The utility model discloses a grinding and polishing assembly and casting grinding and polishing equipment. The grinding and polishing assembly comprises a first mounting bracket, a grinding device, a position adjusting device and a polishing device, the grinding device is fixed on the first mounting bracket, and the polishing device is connected with the first mounting bracket through the position adjusting device; the polishing device comprises a second mounting base, a polishing driving element, a driving wheel, a polishing supporting wheel, a floating supporting assembly, a tensioning assembly and a polishing belt, the floating supporting assembly comprises a fixing part, a floating part and a first elastic element, and the first elastic element is arranged between the fixing part and the floating part; the polishing supporting wheel is rotationally connected with the floating part, and the polishing driving element and the fixing part are both fixed to the second mounting base. According to the utility model, a grinding treatment procedure and a polishing treatment procedure can be completed on the same machine tool, and the surface of a casting can be prevented from being excessively polished.

Description

Technical Field

[0001] The utility model relates to the surface cleaning of castings, in particular to a grinding and polishing assembly and a casting grinding and polishing device. Background Art

[0002] In the final stage of casting production, after the casting is poured and cooled and solidified, a series of redundant materials often remain on its surface and inside, such as small burrs on the parting surface, casting materials left at the ingate, and residues at the neck of the riser. These not only affect the appearance beauty of the casting, but may also have an adverse impact on the subsequent processing, assembly and performance of the casting. Especially for special-shaped castings with complex shapes and variable structures, these problems are particularly prominent.

[0003] As a key link in the casting production process, the cleaning process aims to grind and remove unnecessary residues such as burrs and protrusions on the surface of the casting, and through polishing treatment, make the casting present a more delicate and smooth appearance, ensuring that the casting meets the design requirements and the quality standards expected by customers. In the prior art, generally, the casting grinding process is carried out by a grinding device, and then the ground casting is transferred to a polishing device for the casting polishing process. Since the casting needs to be disassembled, transferred and re-clamped during this process, the production efficiency is relatively low. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide a grinding and polishing assembly and a casting grinding and polishing device, which can complete the grinding process and the polishing process on the same machine tool, without the need to disassemble, transfer and re-clamp the casting between the two processes, significantly improving the production efficiency, and can prevent over-polishing of the casting surface caused by excessive pressure, helping to reduce the risk of scratches or damage on the casting surface.

[0005] A grinding and polishing assembly in the present utility model includes a first mounting bracket, a grinding device, a position adjusting device, and a polishing device; the grinding device is fixed on the first mounting bracket, and the polishing device is connected to the first mounting bracket through the position adjusting device; the polishing device includes a second mounting seat, a polishing driving element, a driving wheel, a polishing supporting wheel, a floating supporting component, a tensioning component, and a polishing belt. The floating supporting component includes a fixed part, a floating part, and a first elastic element. The first elastic element is arranged between the fixed part and the floating part. The polishing supporting wheel is rotatably connected to the floating part. The polishing driving element and the fixed part are both fixed on the second mounting seat. The output shaft of the polishing driving element can drive the driving wheel to rotate. The polishing belt is sleeved outside the driving wheel and the polishing supporting wheel. The tensioning component is used to provide a tensioning force for the polishing belt.

[0006] Furthermore, a first rotating shaft is provided at the bottom of the floating part, and the polishing support wheel is rotatably connected to the first rotating shaft; the fixed part, the floating part and the first elastic element are arranged in sequence along the up and down directions, and the floating part can move up and down relative to the fixed part through the contraction and extension of the first elastic element.

[0007] Furthermore, the polishing drive element is arranged on the top of the second mounting seat, and the tensioning assembly is arranged between the polishing drive element and the floating support assembly.

[0008] Furthermore, the tensioning assembly includes a telescopic tensioning mechanism and two tensioning matching wheels, the two tensioning matching wheels are respectively arranged on the upper and lower sides of the telescopic tensioning mechanism, the two tensioning matching wheels are rotatably mounted on the second mounting seat, and the telescopic tensioning mechanism makes the polishing belt close to the two tensioning matching wheels.

[0009] Furthermore, the telescopic tensioning mechanism includes a tensioning wheel, a movable seat, a telescopic guide column, a fixed seat and a second elastic element. The tensioning wheel is rotatably mounted on the movable seat, the fixed seat is provided with a guide hole, and the second elastic element is arranged in the guide hole; one end of the telescopic guide column is fixedly connected to the movable seat, and the other end thereof is slidably matched with the guide hole and connected to the second elastic element; the fixed seat is arranged on the side of the tensioning wheel away from the polishing belt, and the tensioning wheel can move toward or away from the polishing belt through the extension and contraction of the second elastic element.

[0010] Furthermore, the telescopic tensioning mechanism also includes a locking bolt arranged on the movable seat and a locking screw seat arranged on the fixed seat, and the locking bolt and the locking screw seat can be threadedly connected or separated.

[0011] Furthermore, the grinding device includes a first mounting seat, a grinding drive element and a grinding tool mounting seat, the first mounting seat is connected to the first mounting bracket, the grinding drive element is arranged on the first mounting seat, and the grinding drive element can drive the grinding tool mounting seat to rotate.

[0012] Furthermore, the position adjustment device includes a first driving element and an adapter bracket; the adapter bracket is connected to the first mounting bracket in a manner that allows relative rotation, the first driving element is fixedly connected to the first mounting bracket, and the first driving element can drive the adapter bracket to rotate, and its rotation axis is an axis whose length is along the up and down direction.

[0013] Furthermore, the position adjustment device also includes a second driving element, a slide rail and a slider, the slider is fixedly connected to the second mounting seat, the slider is slidably matched with the slide rail, and the length direction of the slide rail is along the up and down direction; the slide rail and the second driving element are both fixedly connected to the adapter bracket, and a limit block is provided on the output shaft of the second driving element, and the driving element can drive the limit block to move in the up and down direction, and a limit plate corresponding to the position of the limit block is provided on the top of the second mounting seat.

[0014] The utility model discloses a casting grinding and polishing device, which comprises the grinding and polishing assembly.

[0015] The beneficial effects of the utility model are:

[0016] (1) The utility model can perform a grinding process on a casting through a grinding device and a polishing process on a casting through a polishing device, and the position adjustment device can change the position of the polishing device relative to the grinding device to avoid the grinding device and the polishing device from influencing each other, thereby achieving the completion of the grinding process and the polishing process on the same machine tool, without the need to disassemble, transfer and re-clamp the casting between the two processes, thereby significantly improving production efficiency.

[0017] (2) The utility model can dynamically adjust the contact pressure between the polishing belt and the casting through the floating support assembly, making the polishing process more stable, preventing the casting surface from being over-polished due to excessive pressure, and helping to reduce the risk of scratches or damage on the casting surface. When the first elastic element stretches or contracts, the tensioning assembly provides tension to the polishing belt to ensure that the polishing belt maintains an appropriate tightness, preventing the transmission efficiency from decreasing or being damaged due to the polishing belt being too loose or too tight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the utility model clearer, the utility model is described with the following drawings:

[0019] Figure 1 This is one of the structural schematic diagrams of the grinding and polishing assembly of the utility model;

[0020] Figure 2 This is the second structural schematic diagram of the grinding and polishing assembly of the utility model;

[0021] Figure 3 It is a front view schematic diagram of the grinding and polishing assembly of the utility model;

[0022] Figure 4 It is a side view schematic diagram of the grinding and polishing assembly of the utility model;

[0023] Figure 5It is a partially enlarged schematic diagram of the tensioning assembly of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the connection between the telescopic tensioning mechanism and the tensioning wheel of the utility model;

[0025] Figure 7 It is a structural schematic diagram of the connection between the floating support assembly and the polishing support wheel of the utility model;

[0026] Figure 8 This is one of the structural schematic diagrams of the casting grinding and polishing equipment of the utility model;

[0027] Figure 9 This is the second structural schematic diagram of the casting grinding and polishing equipment of the utility model.

[0028] The following are marked in the accompanying drawings:

[0029] 1- first mounting bracket;

[0030] 2-grinding device, 21-first mounting seat, 22-grinding drive element, 23-grinding tool mounting seat;

[0031] 3-position adjustment device, 31-first driving element, 32-adapter bracket, 33-second driving element, 34-slide rail, 35-limiting block;

[0032] 4-polishing device, 41-second mounting seat, 411-limiting plate, 412-slider, 42-polishing drive element, 43-driving wheel, 44-polishing support wheel, 45-floating support assembly, 451-fixed part, 452-floating part, 453-first rotating shaft, 46-tensioning assembly, 461-tensioning matching wheel, 462-tensioning wheel, 463-movable seat, 464-telescopic guide column, 465-fixed seat, 466-locking bolt, 467-locking screw seat, 47-polishing belt;

[0033] 5-machine tool base, 6-workpiece clamping assembly, 7-grinding and polishing drive assembly, 8-clamping drive assembly, 9-tool magazine. DETAILED DESCRIPTION

[0034] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] like Figures 1-7As shown in the figure, a grinding and polishing assembly in this embodiment includes a first mounting bracket 1, a grinding device 2, a position adjusting device 3, and a polishing device 4. The grinding device 2 is fixed on the first mounting bracket 1, and the polishing device 4 is connected to the first mounting bracket 1 through the position adjusting device 3. The polishing device 4 includes a second mounting base 41, a polishing driving element 42, a driving wheel 43, a polishing support wheel 44, a floating support assembly 45, a tensioning assembly 46, and a polishing belt 47. The floating support assembly 45 includes a fixed part 451, a floating part 452, and a first elastic element. The first elastic element is arranged between the fixed part 451 and the floating part 452. The polishing support wheel 44 is rotatably connected to the floating part 452. The polishing driving element 42 and the fixed part 451 are both fixed on the second mounting base 41. The output shaft of the polishing driving element 42 can drive the driving wheel 43 to rotate. The polishing belt 47 is sleeved on the driving wheel 43 and the polishing support wheel 44. The tensioning assembly 46 is used to provide a tensioning force for the polishing belt 47.

[0036] During use, the grinding device 2 and the polishing device 4 are both arranged on the first mounting bracket 1, and then the first mounting bracket 1 is installed on the machine tool bed. After the casting is fixed on the workpiece positioning assembly of the machine tool bed, the casting can be subjected to a grinding process through the grinding device 2 and a polishing process through the polishing device 4. Moreover, the position adjusting device 3 can change the position of the polishing device 4 relative to the grinding device 2 to avoid mutual influence between the grinding device 2 and the polishing device 4, so as to realize the completion of the grinding process and the polishing process on the same machine tool without the need to disassemble, transfer, and re-clamp the casting between the two processes, significantly improving the production efficiency.

[0037] In addition, the floating support assembly 45 can dynamically adjust the contact pressure between the polishing belt 47 and the casting, making the polishing process more stable, preventing over-polishing of the casting surface caused by excessive pressure, and helping to reduce the risk of scratches or damage on the casting surface. When the first elastic element expands or contracts, the tensioning assembly 46 provides a tensioning force for the polishing belt 47 to ensure that the polishing belt 47 maintains an appropriate tightness, preventing a decrease in transmission efficiency or damage caused by the polishing belt 47 being too loose or too tight.

[0038] In this embodiment, a first rotating shaft 453 is disposed at the bottom of the floating part 452, and the polishing support wheel 44 is rotatably connected to the first rotating shaft 453; the fixed part 451, the floating part 452, and the first elastic element are sequentially arranged in the vertical direction. By the contraction and extension of the first elastic element, the floating part 452 can move up and down relative to the fixed part 451. During polishing, the polishing support wheel 44 provides a supporting force for the polishing belt 47. When the contact pressure between the polishing belt 47 and the casting is greater than the elastic force of the first elastic element, the first elastic element will contract and the floating part 452 will move upward as a whole, preventing over-polishing of the casting surface caused by excessive pressure.

[0039] In this embodiment, the polishing driving element 42 is disposed at the top of the second mounting seat 41, and the tensioning assembly 46 is disposed between the polishing driving element 42 and the floating support assembly 45.

[0040] In this embodiment, the tensioning assembly 46 includes a telescopic tensioning mechanism and two tensioning mating wheels 461. The two tensioning mating wheels 461 are respectively disposed on the upper and lower sides of the telescopic tensioning mechanism. The two tensioning mating wheels 461 are both rotatably mounted on the second mounting seat 41. The telescopic tensioning mechanism makes the polishing belt 47 closely attached to the two tensioning mating wheels 461. Through the combined action of the telescopic tensioning mechanism and the two tensioning mating wheels 461, the polishing belt 47 forms a bent path, facilitating the adjustment of the tightness by the telescopic tensioning mechanism.

[0041] In this embodiment, the telescopic tensioning mechanism includes a tensioning wheel 462, a movable seat 463, a telescopic guide post 464, a fixed seat 465, and a second elastic element. The tensioning wheel 462 is rotatably mounted on the movable seat 463. A guide hole is provided on the fixed seat 465. The second elastic element is disposed in the guide hole; one end of the telescopic guide post 464 is fixedly connected to the movable seat 463, and the other end thereof is slidably engaged with the guide hole and connected to the second elastic element; the fixed seat 465 is disposed on the side of the tensioning wheel 462 away from the polishing belt 47. By the extension and contraction of the second elastic element, the tensioning wheel 462 can move in a direction close to or away from the polishing belt 47.

[0042] When the first elastic element contracts and the floating part 452 moves upward as a whole, the polishing belt 47 becomes loose. At this time, the second elastic element stretches, driving the tensioning wheel 462 to move in the direction close to the polishing belt 47, thereby tightening the loosened polishing belt 47 again; when the first elastic element stretches and the floating part 452 moves downward as a whole, the polishing belt 47 becomes tight. At this time, the second elastic element contracts, driving the tensioning wheel 462 to move in the direction away from the polishing belt 47, thereby loosening the tightened polishing belt 47 again; therefore, it can ensure that the polishing belt 47 maintains an appropriate tightness to prevent the transmission efficiency from being reduced or damaged due to the polishing belt 47 being too loose or too tight.

[0043] In this embodiment, the telescopic tensioning mechanism further includes a locking bolt 466 disposed on the movable seat 463 and a locking screw seat 467 disposed on the fixed seat 465 . The locking bolt 466 and the locking screw seat 467 can be threadedly connected or separated.

[0044] When the polishing belt 47 needs to be replaced, the locking bolt 466 is threadedly connected to the locking screw seat 467, so that the second elastic element can be contracted and the distance between the movable seat 463 and the fixed seat 465 can be shortened, so that the tension wheel 462 can be driven to move in a direction away from the polishing belt 47, and the position of the movable seat 463 is locked, and the polishing belt 47 becomes loose, so that the polishing belt 47 can be removed and replaced. After the replacement is completed, the connection between the locking bolt 466 and the locking screw seat 467 is released, the locking bolt 466 is separated from the locking screw seat 467, the movable seat 463 can move freely, the second elastic element is stretched, and the tension wheel 462 is driven to move in a direction close to the polishing belt 47, so that the polishing belt 47 is tightened again.

[0045] In this embodiment, the grinding device 2 includes a first mounting seat 21, a grinding drive element 22 and a grinding tool mounting seat 23. The first mounting seat 21 is connected to the first mounting bracket 1. The grinding drive element 22 is arranged on the first mounting seat 21. The grinding drive element 22 can drive the grinding tool mounting seat 23 to rotate. The grinding drive element 22 can be a rotary motor. After the grinding tool is installed on the grinding tool mounting seat 23, the grinding drive element 22 drives the grinding tool mounting seat 23 and the grinding tool to rotate, which can be used to grind the surface of the casting.

[0046] In this embodiment, the position adjustment device 3 includes a first driving element 31 and an adapter bracket 32; the adapter bracket 32 is connected to the first mounting bracket 1 in a manner that allows relative rotation, and the first driving element 31 is fixedly connected to the first mounting bracket 1. The first driving element 31 can drive the adapter bracket 32 to rotate, and its rotation axis is an axis whose length is along the up and down directions.

[0047] The first driving element 31 can be a rotary motor, which is used to adjust the rotation angle of the adapter bracket 32 and the polishing device 4 on the adapter bracket 32, enabling more flexible freedom during polishing.

[0048] In this embodiment, the position adjusting device 3 further includes a second driving element 33, a slide rail 34 and a slider 412. The slider 412 is fixedly connected to the second mounting seat 41. The slider 412 is slidably engaged with the slide rail 34. The length direction of the slide rail 34 is along the up and down direction. Both the slide rail 34 and the second driving element 33 are fixedly connected to the adapter bracket 32. A limiting block 35 is provided on the output shaft of the second driving element 33. The driving element can drive the limiting block 35 to move along the up and down direction. A limiting plate 411 corresponding to the position of the limiting block 35 is provided on the top of the second mounting seat 41.

[0049] The second driving element 33 can be a linear motor or a linear cylinder. By driving the limiting block 35 to move up and down through the second driving element 33, the lowest height when the limiting plate 411 moves up and down can be limited, that is, the lowest height when the polishing device 4 moves up and down is limited. During use, under the action of gravity, the polishing device 4 as a whole has a downward movement tendency until the polishing device 4 stops moving downward after the limiting plate 411 contacts the limiting block 35. The gravity of the polishing device 4 can be used to provide the contact pressure between the polishing belt 47 and the casting during polishing, while the supporting force provided by the second driving element 33 and the limiting block 35 is opposite to this gravity, and the contact pressure between the polishing belt 47 and the casting can be changed by changing this supporting force. The limiting block 35 and the limiting plate 411 are designed in a split manner to prevent the normal operation of each component from being affected after the positions of the second mounting seat 41 and the second driving element 33 are offset.

[0050] As Figure 8 and Figure 9 shown, a casting grinding and polishing equipment in this embodiment includes the above-mentioned grinding and polishing assembly, and also includes a machine tool bed body. The machine tool bed body includes a machine tool base 5, a workpiece clamping assembly 6, a grinding and polishing driving assembly 7 and a clamping driving assembly 8. The workpiece clamping assembly 6 is connected to the machine tool base 5 through the clamping driving assembly 8. The workpiece clamping assembly 6 can fix the casting. The clamping driving assembly 8 can drive the workpiece clamping assembly 6 to move in the front and back directions and drive the workpiece clamping assembly 6 to rotate. The first mounting bracket 1 of the grinding and polishing assembly is connected to the machine tool base 5 through the grinding and polishing driving assembly 7. The grinding and polishing driving assembly 7 can drive the grinding and polishing assembly to move in the up and down direction and the left and right direction. The machine tool bed body is also provided with a tool magazine 9. The tool magazine 9 includes a turntable and a plurality of grinding tools arranged at intervals along the circumferential direction on the turntable. The tool magazine 9 can facilitate the replacement of grinding tools for the grinding device 2. The grinding tool is a grinding head that can be connected to the grinding tool mounting seat 23.

[0051] When in use, first fix the casting on the workpiece clamping assembly 6, and then drive the polishing device 4 to move upward through the second driving element 33 until the lowest point of the polishing belt 47 is higher than the grinding device 2. Then, through the cooperation of the grinding and polishing driving assembly 7 and the clamping driving assembly 8, change the posture and position of the grinding device 2 and the casting. At this time, the grinding device 2 is in contact with the surface of the casting to perform the casting polishing process. After the casting polishing process is completed, drive the limiting block 35 to move downward through the second driving element 33, and the polishing device 4 also moves downward under the action of gravity until the lowest point of the polishing belt 47 is lower than the grinding device 2. Then, through the cooperation of the grinding and polishing driving assembly 7 and the clamping driving assembly 8, change the posture and position of the grinding device 2 and the casting. At this time, the polishing belt 47 is in contact with the surface of the casting to perform the casting polishing process.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A grinding and polishing assembly, characterized in that: It includes a first mounting bracket (1), a grinding device (2), a position adjusting device (3), and a polishing device (4); the grinding device (2) is fixed on the first mounting bracket (1), and the polishing device (4) is connected to the first mounting bracket (1) through the position adjusting device (3); the polishing device (4) includes a second mounting base (41), a polishing driving element (42), a driving wheel (43), a polishing support wheel (44), a floating support assembly (45), a tensioning assembly (46), and a polishing belt (47). The floating support assembly (45) includes a fixed part (451), a floating part (452), and a first elastic element. The first elastic element is arranged between the fixed part (451) and the floating part (452). The polishing support wheel (44) is rotatably connected to the floating part (452). The polishing driving element (42) and the fixed part (451) are both fixed on the second mounting base (41). The output shaft of the polishing driving element (42) can drive the driving wheel (43) to rotate. The polishing belt (47) is sleeved on the driving wheel (43) and the polishing support wheel (44). The tensioning assembly (46) is used to provide a tensioning force for the polishing belt (47).

2. The grinding and polishing assembly according to claim 1, wherein: A first rotating shaft (453) is arranged at the bottom of the floating part (452). The polishing support wheel (44) is rotatably connected to the first rotating shaft (453); the fixed part (451), the floating part (452), and the first elastic element are arranged in sequence in the up-down direction. Through the contraction and extension of the first elastic element, the floating part (452) can move up and down relative to the fixed part (451).

3. The grinding and polishing assembly according to claim 1, wherein: The polishing driving element (42) is arranged at the top of the second mounting base (41), and the tensioning assembly (46) is arranged between the polishing driving element (42) and the floating support assembly (45).

4. The grinding and polishing assembly according to claim 1, wherein: The tensioning assembly (46) includes a telescopic tensioning mechanism and two tensioning mating wheels (461). The two tensioning mating wheels (461) are respectively arranged on the upper and lower sides of the telescopic tensioning mechanism. The two tensioning mating wheels (461) are both rotatably mounted on the second mounting base (41). The telescopic tensioning mechanism makes the polishing belt (47) closely attached to the two tensioning mating wheels (461).

5. The grinding and polishing assembly according to claim 4, wherein: The telescopic tensioning mechanism includes a tensioning wheel (462), a movable seat (463), a telescopic guide post (464), a fixed seat (465), and a second elastic element. The tensioning wheel (462) is rotatably mounted on the movable seat (463). A guide hole is provided on the fixed seat (465), and the second elastic element is disposed in the guide hole. One end of the telescopic guide post (464) is fixedly connected to the movable seat (463), and the other end thereof is slidably engaged with the guide hole and connected to the second elastic element. The fixed seat (465) is disposed on a side of the tensioning wheel (462) away from the polishing belt (47). By the expansion and contraction of the second elastic element, the tensioning wheel (462) can move in a direction approaching or away from the polishing belt (47).

6. The grinding and polishing assembly according to claim 5, wherein: The telescopic tensioning mechanism further includes a locking bolt (466) disposed on the movable seat (463) and a locking nut seat (467) disposed on the fixed seat (465). The locking bolt (466) and the locking nut seat (467) can be threadedly connected or separated.

7. The grinding and polishing assembly according to claim 1, characterized in that: The grinding device (2) includes a first mounting seat (21), a grinding driving element (22), and a grinding tool mounting seat (23). The first mounting seat (21) is connected to the first mounting bracket (1). The grinding driving element (22) is disposed on the first mounting seat (21), and the grinding driving element (22) can drive the grinding tool mounting seat (23) to rotate.

8. The grinding and polishing assembly according to claim 1, characterized in that: The position adjusting device (3) includes a first driving element (31) and a transfer bracket (32). The transfer bracket (32) is connected to the first mounting bracket (1) in a relatively rotatable manner. The first driving element (31) is fixedly connected to the first mounting bracket (1), and the first driving element (31) can drive the transfer bracket (32) to rotate, and the axis of its rotation is an axis with a length along the up-down direction.

9. The grinding and polishing assembly according to claim 8, wherein: The position adjusting device (3) further includes a second driving element (33), a slide rail (34), and a slider (412). The slider (412) is fixedly connected to the second mounting seat (41). The slider (412) is slidably engaged with the slide rail (34), and the length direction of the slide rail (34) is along the up-down direction. Both the slide rail (34) and the second driving element (33) are fixedly connected to the transfer bracket (32). A limit block (35) is provided on the output shaft of the second driving element (33), and the driving element can drive the limit block (35) to move in the up-down direction. A limit plate (411) corresponding to the position of the limit block (35) is provided at the top of the second mounting seat (41).

10. A casting grinding and polishing device, characterized in that: It includes the grinding and polishing assembly according to any one of claims 1-9.

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