Polishing device for aluminum and magnesium alloy castings

Abstract

The utility model relates to the technical field of aluminum and magnesium alloy polishing, in particular to an aluminum and magnesium alloy casting polishing device which comprises a shell, a polishing device body, a polishing device body and a polishing device body, the shell is composed of a base and a frame, a cavity is formed in the base, and the base is located below the frame; the net plate is arranged in the middle of the upper portion of the base, a notch is formed in the middle of the net plate, and the net plate is used for placing a casting; and the polishing device is arranged right above the screen plate. The inclination angle of the polishing device is adjusted through the angle adjusting device, the polishing device is stopped after the angle of the polishing device reaches the inclination angle of the inner wall of the rotary body casting, the polishing device is pushed into the rotary body casting to make contact with the inner wall of the rotary body casting, and polishing of the inner wall of the rotary body casting is achieved. Manual polishing is not needed any more, so that the polishing process is more stable, and damage to the rotary body casting is avoided; and meanwhile, the polishing speed is high, and efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum and magnesium alloy polishing, in particular to a polishing device for aluminum and magnesium alloy castings. Background Technique

[0002] Aluminum (magnesium) alloy usually refers to an alloy with aluminum (magnesium) as the base and a certain amount of other alloying elements added, which has the advantages of high strength, low density, good heat dissipation, etc., and is widely used in the fields of electronics, automobiles, aerospace, etc. After the production of aluminum and magnesium alloy castings is completed, it is necessary to polish the surface of the aluminum and magnesium alloy castings, which requires the use of a polishing device for aluminum and magnesium alloy castings.

[0003] However, most of the existing aluminum and magnesium alloy castings need to be polished manually. The operator polishes the aluminum and magnesium alloy castings by holding a polishing grinding wheel by hand. However, for rotary castings, the inner wall is inclined. When polishing manually, it is necessary to insert the polishing grinding wheel deep into the inside of the rotary casting. Due to the lack of stable manual holding, it is easy to cause the polishing grinding wheel to contact the inner wall of the rotary casting too much, resulting in damage to the rotary casting. At the same time, the speed of manual polishing is slow, resulting in low polishing efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems that when the existing aluminum and magnesium alloy castings are polished manually, due to the lack of stable manual holding, it is easy to cause the polishing grinding wheel to contact the inner wall of the rotary casting too much, resulting in damage to the rotary casting, and the speed of manual polishing is slow, resulting in low polishing efficiency.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A polishing device for aluminum and magnesium alloy castings, comprising:

[0007] A housing, composed of a base and a frame, a cavity is formed inside the base, and the base is located below the frame;

[0008] A net plate, arranged at the middle position above the base, a notch is opened at the middle position of the net plate, and the net plate is used for placing castings;

[0009] A polishing device, arranged directly above the net plate, for polishing the casting;

[0010] An angle adjusting device, arranged above the polishing device and fixedly connected to the polishing device, for adjusting the inclination angle of the polishing device;

[0011] A translation device is arranged above the angle adjustment device and fixedly connected to the angle adjustment device for simultaneously adjusting the horizontal positions of the angle adjustment device and the polishing device.

[0012] Preferably, the polishing device includes:

[0013] A polishing roller, on the surface of which a non-woven polishing pad with fluff is arranged for polishing an uneven contact surface;

[0014] A second motor, the output end of which is fixedly connected to the axis of the polishing roller for driving the polishing roller to rotate.

[0015] Preferably, the angle adjustment device includes:

[0016] A moving plate, the middle of which is fixedly connected to the surface of the second motor;

[0017] Two groups of second electric push rods, the output ends of each group of second electric push rods are fixedly connected to the upper end surface of the moving plate;

[0018] A rotating member composed of a vertical plate and a horizontal plate, the bottom end of the vertical plate is fixedly connected to the upper end surface of the horizontal plate; both sides of the horizontal plate are fixedly connected to the surface of the second electric push rod;

[0019] A spur gear, the axis of which is fixedly connected above the vertical plate for driving the vertical plate to rotate;

[0020] A third electric push rod, the output end of which is rotatably connected to the axis of the spur gear;

[0021] A tooth frame is arranged at the edge position of the spur gear and meshed with the spur gear;

[0022] A third motor, the output end of which is fixedly connected to the upper end surface of the tooth frame.

[0023] Preferably, the translation device includes:

[0024] A lead screw, both ends of which penetrate through the corresponding positions of the frame and are rotatably connected to the frame;

[0025] A lead screw nut is arranged on the lead screw and threadedly connected to the lead screw;

[0026] A first motor, the output end of which is fixedly connected to one end of the lead screw for driving the lead screw to rotate.

[0027] Preferably, it further includes: a fixing device; the fixing device is arranged in the cavity for fixing the casting.

[0028] Preferably, the fixing device includes:

[0029] A hollow disc with a space formed inside;

[0030] A turntable arranged in the space, and a plurality of groups of chutes are formed on the surface of the turntable;

[0031] A handwheel, the top end of the handwheel penetrates through the hollow disc and is fixedly connected to the axis center of the turntable;

[0032] A plurality of groups of limiting parts, each group of limiting parts is composed of a first cylindrical pin, a moving rod and an arc-shaped block. One end of the moving rod is fixedly connected to the first cylindrical pin, and the other end is fixedly connected to the arc-shaped block; the first cylindrical pin is arranged in the chute and is slidably connected to the turntable through the chute;

[0033] A plurality of groups of supporting parts are arranged at the edge position of the turntable and are used to support the rotation of the turntable;

[0034] A moving part is arranged below the hollow disc and is fixedly connected to the hollow disc;

[0035] A fourth electric push rod, and the output end of the fourth electric push rod is fixedly connected to the moving part.

[0036] Preferably, the outer diameter of the hollow disc is smaller than the inner diameter of the notch on the net plate.

[0037] Preferably, it further includes: an auxiliary fixing device; the auxiliary fixing device is arranged above the net plate and is used to fix the casting. The auxiliary fixing device includes:

[0038] Two fixing semi-rings, and the two fixing semi-rings can be butted to form a ring;

[0039] Two groups of first electric push rods, and the output end of each group of first electric push rods is fixedly connected to the fixing semi-ring.

[0040] Preferably, it further includes: a collecting device; the collecting device is arranged in the cavity and is used to collect the polished debris.

[0041] Preferably, the collecting device includes:

[0042] Two groups of receiving grooves, and the size after the two groups of receiving grooves are butted is larger than the size of the net plate;

[0043] Two groups of groove plates, each group of groove plates is fixedly connected to the receiving groove, and a slideway is formed on the surface of the groove plate;

[0044] Two sets of rotating rods, with a second cylindrical pin provided at one end of each set of rotating rods. The second cylindrical pin is arranged in the slideway and is slidably connected to the groove plate through the slideway;

[0045] A transmission assembly, which consists of a toothed belt and two sets of belt pulleys. The toothed belt is arranged on the edges of the two sets of belt pulleys, and each set of belt pulleys is fixedly connected to the other end of the rotating rod;

[0046] A fourth motor, the output end of which is fixedly connected to the axis of one set of belt pulleys.

[0047] The beneficial effects proposed by the present utility model are as follows: The inclination angle of the polishing device is adjusted through the angle adjustment device, and after the angle of the polishing device reaches the inclination angle of the inner wall of the rotary casting, it stops, and the polishing device is pushed into the interior of the rotary casting and contacts the inner wall of the rotary casting, so as to realize the polishing of the inner wall of the rotary casting. There is no need for manual polishing, making the polishing process more stable and avoiding damage to the rotary casting; at the same time, the polishing speed is relatively fast, improving the efficiency. Description of the Drawings

[0048] Figure 1 It is a schematic structural diagram of the present utility model;

[0049] Figure 2 is Figure 1 A schematic cross-sectional view of the C-C line in;

[0050] Figure 3 is Figure 2 A schematic top-plan view of the internal connection structure of the hollow disk in;

[0051] Figure 4 is Figure 2 A schematic connection structure diagram at A in;

[0052] Figure 5 is Figure 2 A schematic connection structure diagram at B in.

[0053] In the figure: 1. Housing, 2. Lead screw, 3. Lead screw nut, 4. First motor, 5. Mesh plate, 6. Fixed semi-ring, 7. First electric push rod, 8. Polishing roller, 9. Second motor, 10. Moving plate, 11. Second electric push rod, 12. Rotating part, 13. Straight gear, 14. Third electric push rod, 15. Tooth frame, 16. Third motor, 17. Hollow disk, 18. Turntable, 19. Handwheel, 20. Limiting part, 21. Support part, 22. Moving part, 23. Fourth electric push rod, 24. Receiving groove, 25. Groove plate, 26. Rotating rod, 27. Transmission assembly, 28. Fourth motor. Detailed Embodiments

[0054] The present utility model will be further described in conjunction with the accompanying drawings as follows:

[0055] This embodiment:

[0056] Please refer to Figures 1-5 , in this embodiment: A polishing device for aluminum and magnesium alloy castings includes: a housing 1, a mesh plate 5, a polishing device, an angle adjusting device, and a translation device.

[0057] In this embodiment, the housing 1 is composed of a base and a frame. A cavity is formed inside the base, and the base is located below the frame. The frame is formed by combining a group of top plates and two groups of side plates; the mesh plate 5 is arranged at the middle position above the base. A notch is provided at the middle position of the mesh plate 5, and the mesh plate 5 is used for placing castings.

[0058] In this embodiment, the mesh plate 5 is woven by crossing steel wires and has gaps, and the polishing debris will fall downward through the gaps.

[0059] The polishing device is arranged directly above the mesh plate 5 and is used for polishing the castings; the angle adjusting device is arranged above the polishing device and is fixedly connected to the polishing device, and is used for adjusting the tilt angle of the polishing device.

[0060] In this embodiment, the angle adjusting device is used to change the tilt angle of the polishing device so that the tilt angle of the polishing device is the same as that of the inner wall of the rotary body casting, so that the polishing device can fully fit the inner wall of the rotary body casting and fully polish the inner wall of the rotary body casting.

[0061] The translation device is arranged above the angle adjusting device and is fixedly connected to the angle adjusting device, and is used for simultaneously adjusting the horizontal positions of the angle adjusting device and the polishing device. The translation device can move the polishing device so that the polishing device fits the inner wall of the rotary body casting.

[0062] As Figure 2 shown, the polishing device includes: a polishing roller 8 and a second motor 9.

[0063] In this embodiment, the surface of the polishing roller 8 is provided with a non-woven polishing pad with fluff, which is used for polishing uneven contact surfaces. Since the non-woven polishing pad with fluff has a certain deformation ability, it can fully fit the uneven contact surfaces and improve the polishing efficiency; the output end of the second motor 9 is fixedly connected to the axis of the polishing roller 8 and is used for driving the polishing roller 8 to rotate. The model of the second motor 9 is selected according to actual needs as long as it meets the working conditions.

[0064] As Figure 2 and Figure 4 shown, the angle adjusting device includes: a moving plate 10, two groups of second electric push rods 11, a rotating member 12, a spur gear 13, a third electric push rod 14, a toothed frame 15, and a third motor 16.

[0065] Specifically, the middle of the moving plate 10 is fixedly connected to the surface of the second motor 9. The moving plate 10 can drive the second motor 9 to rotate or push the second motor 9 to move vertically. The output end of each group of second electric push rods 11 is fixedly connected to the upper end surface of the moving plate 10. The output end of the second electric push rod 11 pushes the moving plate 10 to move vertically. The model of the second electric push rod 11 is selected according to actual needs as long as it meets the working conditions. The rotating member 12 is composed of a vertical plate and a horizontal plate. The bottom end of the vertical plate is fixedly connected to the upper end surface of the horizontal plate. The two sides of the horizontal plate are fixedly connected to the surface of the second electric push rod 11. The axis of the spur gear 13 is fixedly connected above the vertical plate and is used to drive the vertical plate to rotate.

[0066] In this embodiment, when the spur gear 13 rotates, it will drive the rotating member 12 to rotate synchronously, and the rotating member 12 drives the second electric push rod 11 to rotate.

[0067] The output end of the third electric push rod 14 is rotatably connected to the axis of the spur gear 13. The tooth frame 15 is arranged at the edge position of the spur gear 13 and is meshed with the spur gear 13.

[0068] When the output end of the third electric push rod 14 moves horizontally, it will drive the spur gear 13 to move synchronously. During the movement of the spur gear 13, it will rotate under the restriction of the tooth frame 15.

[0069] The output end of the third motor 16 is fixedly connected to the upper end surface of the tooth frame 15. The model of the third motor 16 is selected according to actual needs as long as it meets the working conditions. The output end of the third motor 16 drives the polishing device to revolve through the entire angle adjustment device, so as to polish the inner wall of the casting.

[0070] When polishing is required, adjust the third electric push rod 14 so that the output end of the third electric push rod 14 contracts, thereby driving the spur gear 13 to move horizontally. The spur gear 13 will rotate under the restriction of the tooth frame 15 and drive the rotating member 12 to rotate. The rotating member 12 drives the moving plate 10 to rotate through the second electric push rod 11. The moving plate 10 drives the polishing device to deflect and stops rotating after reaching the same inclination angle as the inner wall of the rotary casting. At this time, adjust the second electric push rod 11. The output end of the second electric push rod 11 pushes the polishing device to move obliquely downward through the moving plate 10, so that the polishing device penetrates into the interior of the rotary casting and contacts the inner wall of the rotary casting. At this time, start the second motor 9, and the output end of the second motor 9 drives the polishing roller 8 to rotate. At the same time, start the third motor 16, and the output end of the third motor 16 drives the polishing roller 8 to revolve through the angle adjustment device, realizing the polishing of the inner wall of the rotary casting. There is no need for manual polishing, making the polishing process more stable and avoiding damage to the rotary casting. At the same time, the polishing speed is relatively fast, improving the efficiency.

[0071] Such asFigure 2 As shown in the figure, the translation device includes: a lead screw 2, a lead screw nut 3, and a first motor 4.

[0072] Among them, both ends of the lead screw 2 penetrate through the corresponding positions of the frame and are rotatably connected to the frame, and the frame can support the rotation of the lead screw 2; the lead screw nut 3 is arranged on the lead screw 2 and is threadedly connected to the lead screw 2. When the lead screw 2 rotates, it will cause the lead screw nut 3 to move horizontally. There is a sliding connection between the upper part of the lead screw nut 3 and the frame, which can limit the lead screw nut 3 to only move horizontally; the output end of the first motor 4 is fixedly connected to one end of the lead screw 2 and is used to drive the lead screw 2 to rotate. The model of the first motor 4 is selected according to actual needs as long as it meets the working conditions.

[0073] During polishing, in order to prevent the casting from moving, it is necessary to fix the casting. However, the fixing device will hinder the polishing. When it is impossible to change the fixing position during the polishing of the outer surface of the casting, it is rather inconvenient.

[0074] To solve the above problems, an implementation mode of this embodiment is proposed. The polishing device for aluminum and magnesium alloy castings further includes: a fixing device; the fixing device is arranged in the cavity and is used to fix the casting.

[0075] In this embodiment, as Figure 2 and 3 shown, the fixing device includes: a hollow disc 17, a turntable 18, a handwheel 19, multiple groups of limit members 20, multiple groups of support members 21, a moving member 22, and a fourth electric push rod 23.

[0076] Specifically, a space is formed inside the hollow disc 17; the turntable 18 is arranged in the space, and multiple groups of sliding grooves are formed on the surface of the turntable 18; the top end of the handwheel 19 penetrates through the hollow disc 17 and is fixedly connected to the axis of the turntable 18, and the turntable 18 can be driven to rotate by the handwheel 19; each group of limit members 20 is composed of a first cylindrical pin, a moving rod, and an arc-shaped block. One end of the moving rod is fixedly connected to the first cylindrical pin, and the other end is fixedly connected to the arc-shaped block; the first cylindrical pin is arranged in the sliding groove and is slidably connected to the turntable 18 through the sliding groove.

[0077] In this embodiment, when the turntable 18 rotates, it will cause multiple groups of limit members 20 to move towards the middle or towards the outside simultaneously through the sliding between the first cylindrical pin and the sliding groove. The arc-shaped block is made of rubber material and has the ability to deform.

[0078] Multiple groups of support members 21 are arranged at the edge position of the turntable 18 and are used to support the rotation of the turntable 18; the moving member 22 is arranged below the hollow disc 17 and is fixedly connected to the hollow disc 17, and the moving member 22 can push the hollow disc 17 to move vertically; the output end of the fourth electric push rod 23 is fixedly connected to the moving member 22. The model of the fourth electric push rod 23 is selected according to actual needs as long as it meets the working conditions.

[0079] The outer diameter of the hollow disc 17 is smaller than the inner diameter of the notch on the mesh plate 5.

[0080] When polishing the outer surface of the casting, adjust the fourth electric push rod 23; make the output end of the fourth electric push rod 23 push the hollow disc 17 upward through the moving member 22; the hollow disc 17 will move into the internal space of the casting through the notch; at this time, rotate the hand wheel 19 to drive the turntable 18 to rotate; the turntable 18 will make multiple groups of limit members 20 move outward simultaneously through the sliding between the first cylindrical pin and the chute; stop after the arc-shaped block contacts the casting, so as to fix the casting and prevent it from hindering the polishing of the outer surface.

[0081] The polishing device for aluminum and magnesium alloy castings further includes: an auxiliary fixing device; the auxiliary fixing device is arranged above the mesh plate 5 and is used to fix the casting. The auxiliary fixing device includes: two fixing semi-rings 6 and two first electric push rods 7.

[0082] In this embodiment, the two fixing semi-rings 6 can be butted to form a ring; the output end of each first electric push rod 7 is fixedly connected to the fixing semi-ring 6. The model of the first electric push rod 7 is selected according to actual needs as long as it meets the working conditions. By adjusting the first electric push rod 7, the output end of the first electric push rod 7 is made to push the fixing semi-ring 6 to move towards the middle, and the two fixing semi-rings 6 form a ring to fix the casting.

[0083] During polishing, the generated debris will fall downward through the notch and thus enter the fixing device, causing the fixing device to malfunction.

[0084] To solve the above problems, an implementation manner of this embodiment is proposed. The polishing device for aluminum and magnesium castings further includes: a collecting device; the collecting device is arranged in the cavity and is used to collect the polished debris.

[0085] In this embodiment, as Figure 2 and 5 shown, the collecting device includes: two receiving grooves 24, two groove plates 25, two rotating rods 26, a transmission assembly 27 and a fourth motor 28.

[0086] Among them, the size of the two receiving grooves 24 after butting is larger than the size of the mesh plate 5, and the butted receiving grooves 24 can collect all the generated debris; each groove plate 25 is fixedly connected to the receiving groove 24, and a slideway is provided on the surface of the groove plate 25; one end of each rotating rod 26 is provided with a second cylindrical pin, and the second cylindrical pin is arranged in the slideway and is slidably connected to the groove plate 25 through the slideway.

[0087] In this embodiment, when the rotating rod 26 rotates, it drives the second cylindrical pin to revolve, and through the sliding between the second cylindrical pin and the slideway, the groove plate 25 moves horizontally. The groove plate 25 drives the receiving groove 24 to move, enabling the separation and docking of the receiving groove 24.

[0088] The transmission assembly 27 is composed of a toothed belt and two groups of pulleys. The toothed belt is arranged at the edges of the two groups of pulleys. Each group of pulleys is fixedly connected to the other end of the rotating rod 26. The two groups of pulleys rotate in the same direction. The output end of the fourth motor 28 is fixedly connected to the axis of one group of pulleys. The model of the fourth motor 28 is selected according to actual needs as long as it meets the working conditions.

[0089] When collection is required, the fourth motor 28 is started. The output end of the fourth motor 28 drives one group of pulleys to rotate. This group of pulleys drives the other group of pulleys to rotate in the same direction through the toothed belt. The pulleys simultaneously drive the rotating rod 26 to rotate. The rotating rod 26 drives the second cylindrical pin to revolve, and through the sliding between the second cylindrical pin and the slideway, the groove plate 25 moves horizontally towards the middle. The groove plate 25 pushes the receiving groove 24 to move. The two receiving grooves 24 are docked to catch the falling debris, preventing the debris from falling into the fixing device and ensuring the normal operation of the fixing device.

[0090] Working principle:

[0091] When the aluminum and magnesium alloy casting polishing device is in use, the casting is first placed on the mesh plate 5, and the first electric push rod 7 is adjusted. The output end of the first electric push rod 7 pushes the fixed semi-ring 6 to move horizontally, enabling the two fixed semi-rings 6 to be docked to form a ring and fixing the casting.

[0092] Before polishing, the fourth motor 28 is started. The output end of the fourth motor 28 drives one group of pulleys to rotate. This group of pulleys drives the other group of pulleys to rotate in the same direction through the toothed belt. The pulleys simultaneously drive the rotating rod 26 to rotate. The rotating rod 26 drives the second cylindrical pin to revolve, and through the sliding between the second cylindrical pin and the slideway, the groove plate 25 moves horizontally towards the middle. The groove plate 25 pushes the receiving groove 24 to move. The two receiving grooves 24 are docked to catch the falling debris, preventing the debris from falling into the fixing device and ensuring the normal operation of the fixing device.

[0093] When polishing is required, adjust the third electric push rod 14; make the output end of the third electric push rod 14 contract, thereby driving the spur gear 13 to move horizontally; the spur gear 13 will rotate under the restriction of the tooth frame 15 and drive the rotating member 12 to rotate; the rotating member 12 drives the moving plate 10 to rotate through the second electric push rod 11; the moving plate 10 drives the polishing device to deflect and stops rotating after reaching the same inclination angle as the inner wall of the rotary casting; at this time, adjust the second electric push rod 11, and the output end of the second electric push rod 11 pushes the polishing device to move obliquely downward through the moving plate 10; make the polishing device penetrate into the interior of the rotary casting and contact the inner wall of the rotary casting; at this time, start the second motor 9, and the output end of the second motor 9 drives the polishing roller 8 to rotate; at the same time, start the third motor 16, and the output end of the third motor 16 drives the polishing roller 8 to revolve through the angle adjusting device; realize the polishing of the inner wall of the rotary casting, without the need for manual polishing, making the polishing process more stable and avoiding damage to the rotary casting; at the same time, the polishing speed is relatively fast, improving the efficiency.

[0094] After the polishing of the interior of the casting is completed, adjust the fourth electric push rod 23; make the output end of the fourth electric push rod 23 push the hollow disc 17 upward through the moving member 22; the hollow disc 17 will move into the internal space of the casting through the notch; at this time, drive the turntable 18 to rotate by rotating the handwheel 19; the turntable 18 will make multiple groups of limiting members 20 move outward simultaneously through the sliding between the first cylindrical pin and the chute; stop after the arc-shaped block contacts the casting, thereby fixing the casting and not hindering the polishing of the outer surface.

[0095] At this time, the receiving grooves 24 are located on both sides of the fixing device and can collect the debris generated by the polishing of the outer surface, completing the use of this device.

[0096] Although the present utility model has been illustrated and described by reference to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and details may be made within the scope of the claims.

Claims

1. An aluminum and magnesium alloy casting polishing device, characterized in that: Comprising: A housing (1), composed of a base and a frame, with a cavity formed inside the base, and the base being located below the frame; A mesh plate (5), arranged at the middle position above the base, with a notch formed at the middle position of the mesh plate (5), and the mesh plate (5) being used for placing castings; A polishing device, arranged directly above the mesh plate (5), for polishing the castings; An angle adjusting device, arranged above the polishing device and fixedly connected to the polishing device, for adjusting the inclination angle of the polishing device; A translation device, arranged above the angle adjusting device and fixedly connected to the angle adjusting device, for simultaneously adjusting the horizontal positions of the angle adjusting device and the polishing device.

2. The aluminum and magnesium alloy casting polishing device according to claim 1, characterized in that: The polishing device includes: A polishing roller (8), with a fluffy non-woven polishing pad arranged on the surface of the polishing roller (8), for polishing uneven contact surfaces; A second motor (9), with the output end of the second motor (9) fixedly connected to the axis of the polishing roller (8), for driving the polishing roller (8) to rotate.

3. The aluminum and magnesium alloy casting polishing device according to claim 2, characterized in that: The angle adjusting device includes: A moving plate (10), with the middle of the moving plate (10) fixedly connected to the surface of the second motor (9); Two groups of second electric push rods (11), with the output ends of each group of second electric push rods (11) fixedly connected to the upper end surface of the moving plate (10); A rotating member (12), composed of a vertical plate and a horizontal plate, with the bottom end of the vertical plate fixedly connected to the upper end surface of the horizontal plate; both sides of the horizontal plate are fixedly connected to the surface of the second electric push rod (11); A spur gear (13), with the axis of the spur gear (13) fixedly connected above the vertical plate, for driving the vertical plate to rotate; A third electric push rod (14), with the output end of the third electric push rod (14) rotatably connected to the axis of the spur gear (13); A toothed frame (15), arranged at the edge position of the spur gear (13) and meshing with the spur gear (13); A third motor (16), with the output end of the third motor (16) fixedly connected to the upper end surface of the toothed frame (15).

4. The aluminum and magnesium alloy casting polishing device according to claim 1, wherein: The translation device includes: A lead screw (2), with both ends of the lead screw (2) passing through corresponding positions of the frame and rotatably connected to the frame; A lead screw nut (3), arranged on the lead screw (2) and threadedly connected to the lead screw (2); A first motor (4), with the output end of the first motor (4) fixedly connected to one end of the lead screw (2), for driving the lead screw (2) to rotate.

5. The aluminum and magnesium alloy casting polishing device according to claim 1, wherein: It further includes: A fixing device; the fixing device is arranged in the cavity for fixing the castings.

6. The aluminum and magnesium alloy casting polishing device according to claim 5, wherein: The fixing device includes: A hollow disc (17), with a space formed inside; A turntable (18), arranged in the space, and multiple groups of sliding grooves are formed on the surface of the turntable (18); A handwheel (19), with the top end of the handwheel (19) passing through the hollow disc (17) and fixedly connected to the axis of the turntable (18); Multiple sets of limit members (20), each set of limit members (20) is composed of a first cylindrical pin, a moving rod and an arc-shaped block. One end of the moving rod is fixedly connected to the first cylindrical pin, and the other end is fixedly connected to the arc-shaped block. The first cylindrical pin is arranged in the chute and is slidably connected to the turntable (18) through the chute; Multiple sets of support members (21), arranged at the edge position of the turntable (18) for supporting the rotation of the turntable (18); A moving member (22), arranged below the hollow disc (17) and fixedly connected to the hollow disc (17); A fourth electric push rod (23), the output end of the fourth electric push rod (23) is fixedly connected to the moving member (22).

7. The aluminum and magnesium alloy casting polishing device according to claim 6, characterized in that: The outer diameter of the hollow disc (17) is smaller than the inner diameter of the notch on the mesh plate (5).

8. The aluminum and magnesium alloy casting polishing device according to claim 1, wherein: It further includes: An auxiliary fixing device; The auxiliary fixing device is arranged above the mesh plate (5) for fixing the casting. The auxiliary fixing device includes: Two sets of fixing half-rings (6), and the two sets of fixing half-rings (6) can be butted to form a ring; Two sets of first electric push rods (7), and the output end of each set of first electric push rods (7) is fixedly connected to the fixing half-ring (6).

9. The aluminum and magnesium alloy casting polishing device according to claim 1, wherein: It further includes: A collecting device; the collecting device is arranged in the cavity for collecting the polished debris.

10. The aluminum and magnesium alloy casting polishing device according to claim 9, wherein: The collecting device includes: Two sets of receiving grooves (24), and the size after the two sets of receiving grooves (24) are butted is larger than the size of the mesh plate (5); Two sets of groove plates (25), each set of groove plates (25) is fixedly connected to the receiving groove (24), and a slideway is arranged on the surface of the groove plate (25); Two sets of rotating rods (26), one end of each set of rotating rods (26) is provided with a second cylindrical pin, the second cylindrical pin is arranged in the slideway and is slidably connected to the groove plate (25) through the slideway; A transmission component (27), composed of a toothed belt and two sets of belt pulleys. The toothed belt is arranged at the edge of the two sets of belt pulleys, and each set of belt pulleys is fixedly connected to the other end of the rotating rod (26); A fourth motor (28), the output end of the fourth motor (28) is fixedly connected to the axis of one set of belt pulleys.

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