Aluminum alloy die casting grinding method and equipment

Abstract

This invention relates to the field of grinding, and provides a method and equipment for grinding aluminum alloy die-cast parts. The method includes a base, with two first mounting brackets fixed to the top wall of the base. A second mounting bracket is fixed to the two first mounting brackets. A first electric push rod is fixed to the second mounting bracket. An electromagnet and two transmission plates are fixed to the movable part of the first electric push rod. A drive roller assembly is connected to the first electric push rod. Two toothed grooves are formed on the inner wall of the first electric push rod, and a limit tooth assembly is fixed to the inner wall of the toothed grooves. Two support assemblies are connected to the base. Each support assembly includes a support roller assembly, a linkage rod, and an L-shaped plate. One end of the linkage rod is rotatably connected to the support roller assembly, and the other end is rotatably connected to the L-shaped plate. An internal grinding roller assembly is connected to the base, and an external grinding assembly is connected to one of the first mounting brackets. This embodiment can achieve the effect of adjusting the distance between the two support roller assemblies and pressing the workpiece with the drive roller assembly by using only one first electric push rod for driving.

Description

Technical Field

[0001] This invention relates to the field of polishing technology, specifically to a polishing method and equipment for aluminum alloy die castings. Background Technology

[0002] Chinese utility model patent CN222570119U discloses a grinding device for aerospace aluminum alloy tubular castings. The device includes a base with two sets of support seats. Each support seat has two sets of first electric push rods symmetrically arranged via support grooves. The output end of each first electric push rod has a support roller assembly. A second electric push rod is mounted above the base via a mounting bracket. The bottom end of the second electric push rod has a drive roller assembly. An external grinding block is located on one side of the support seats and drive roller assembly, and a moving drive structure is provided in conjunction with the external grinding block. A mounting seat is located on one side of the base via a third electric push rod. The mounting seat has a first motor, a fourth electric push rod, and an internal grinding roller connected in sequence. This utility model can achieve flexible support and rotational drive for grinding aerospace aluminum alloy tubular castings, and can simultaneously grind the interior and exterior walls of the castings, improving processing efficiency.

[0003] However, the aforementioned patent incorporates multiple electric actuators and motors, making it more difficult to maintain and more prone to failure due to the presence of numerous electrical components. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention aims to provide a grinding method and equipment for aluminum alloy die-cast parts. To solve these problems, this invention employs the following technical solution:

[0005] A grinding device for aluminum alloy die castings includes a base, two first mounting brackets fixed to the top wall of the base, a second mounting bracket fixed to the two first mounting brackets, a first electric push rod fixed to the second mounting bracket, an electromagnet and two transmission plates fixed to the movable part of the first electric push rod, a drive roller group connected to the first electric push rod, and two toothed grooves opened in the inner wall of the first electric push rod, with a limit tooth group fixed to the inner wall of the toothed grooves.

[0006] Two support assemblies are connected to the base. The support assemblies include a support roller group, a linkage rod, and an L-shaped plate. One end of the linkage rod is rotatably connected to the support roller group, and the other end of the linkage rod is rotatably connected to the L-shaped plate. The L-shaped plate is slidably connected to the inner wall of the second mounting frame. An iron slide rod is slidably connected to the L-shaped plate. A locking tooth is fixed to one end of the iron slide rod, and a connecting piece is fixed to the iron slide rod. The connecting piece is connected to the L-shaped plate through an elastic element. An internal grinding roller assembly is connected to the base, and an external grinding assembly is connected to one of the first mounting frames.

[0007] Preferably, the external grinding roller assembly includes a second electric push rod and a lifting plate. The second electric push rod is fixed to the top wall of the base, and the lifting plate is fixed to the movable part of the second electric push rod. A first C-shaped frame is fixed to the lifting plate, and a threaded hole is provided on the first C-shaped frame. An extension plate is slidably connected to the lifting plate, and a dual-axis motor and a reducer are fixed to the extension plate.

[0008] A grinding head is fixedly connected to the output shaft on one side of the dual-axis motor, and the output shaft on the other side of the dual-axis motor is fixedly connected to the input shaft of the reducer. A threaded rod is fixedly connected to the output shaft of the reducer, and the threaded rod is threadedly connected to the inner wall of the threaded hole.

[0009] Preferably, a first permanent magnet is fixedly connected to the grinding head, an automatic water collection device is fixedly connected to the top wall of the base, a water pipe body is movably connected to the automatic water collection device, a nozzle assembly is fixedly connected to one end of the water pipe body, a second permanent magnet is connected to the nozzle assembly, a nozzle support frame is fixedly connected to the top wall of the base, the nozzle support frame supports the water pipe body, and the water pipe body is connected to an external water supply system.

[0010] Preferably, the nozzle assembly includes a nozzle fixing part and a nozzle rotating part. The nozzle fixing part is fixedly connected to one end of the water pipe body, and the nozzle rotating part is rotatably connected to the nozzle fixing part. The second permanent magnet is fixedly connected to the nozzle rotating part. A water passage is provided on the nozzle fixing part, and a water cavity is provided on the nozzle rotating part. The water cavity is connected to the outer wall of the nozzle rotating part through two or more water outlet channels, and the water cavity is connected to the water passage.

[0011] Preferably, the first permanent magnet has an extension portion, and the second permanent magnet has a groove.

[0012] Preferably, an electric valve is connected to the inner wall of the water passage, and a distance sensor is connected to the nozzle fixing part.

[0013] Preferably, the base is equipped with a controller.

[0014] Preferably, the movable part of the second electric push rod is fixedly connected to the lifting plate via the second C-shaped frame.

[0015] Preferably, the transmission plate has two or more rolling balls connected to it.

[0016] A grinding method for aluminum alloy die castings includes grinding the workpiece using the aforementioned grinding equipment, placing the workpiece on two support roller groups, pressing the workpiece with a drive roller group, grinding the inner wall of the workpiece with an internal grinding roller assembly, and grinding the outer wall of the workpiece with an external grinding assembly.

[0017] The present invention has the following beneficial effects:

[0018] This embodiment can achieve the effect of adjusting the distance between the two support roller groups and driving the roller groups to press the workpiece by using only one first electric push rod, so as to adapt to workpieces of different sizes. It can also automatically limit and release the two support roller groups, so as to achieve the effect of linkage and disconnection between the first electric push rod and the support roller groups. Unlike the prior art, it does not require multiple electric push rods, which reduces the number of electrical components, reduces device maintenance costs, reduces maintenance difficulty, and reduces component failure rate. Attached Figure Description

[0019] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a grinding device for aluminum alloy die castings according to the present invention;

[0021] Figure 2 This is the present invention. Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is the present invention. Figure 1 Enlarged view of point B in the middle;

[0023] Figure 4 This is the present invention. Figure 1 Right view of the central support roller assembly, internal grinding roller assembly, and automatic water collection device;

[0024] Figure 5 This is the present invention. Figure 4 Enlarged view of the central nozzle assembly;

[0025] Figure 6 This is the present invention. Figure 1 Right view of the first mounting bracket and the second mounting bracket.

[0026] Reference numerals: 1. Base; 2. First mounting bracket; 3. Second mounting bracket; 4. First electric push rod; 5. Drive roller assembly; 6. Support roller assembly; 7. Linkage rod; 8. L-shaped plate; 9. Iron slide rod; 10. Clamping tooth; 11. Tooth groove; 12. Limiting tooth assembly; 13. Elastic component; 14. Connecting piece; 15. Ball bearing; 16. Electromagnet; 17. Transmission plate; 18. Second electric push rod; 19. Lifting plate; 20. First C-shaped frame; 21. 21. Threaded hole; 22. Second C-shaped bracket; 23. Dual-axis motor; 24. Grinding head; 25. First permanent magnet; 26. Reducer; 27. Threaded rod; 28. Extension plate; 29. ​​Automatic water pipe retractor; 30. Water pipe body; 31. Nozzle fixing part; 32. Nozzle rotating part; 33. Second permanent magnet; 34. Nozzle support frame; 35. Water passage; 36. Water outlet passage; 37. Water cavity; 38. External grinding assembly; 39. Workpiece. Detailed Implementation

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] like Figures 1-3 , Figure 6As shown, a grinding device for aluminum alloy die castings includes a base 1. Two first mounting brackets 2 are fixedly connected to the top wall of the base 1. A second mounting bracket 3 is fixedly connected to the two first mounting brackets 2. A first electric push rod 4 is fixedly connected to the second mounting bracket 3. An electromagnet 16 and two transmission plates 17 are fixedly connected to the movable part of the first electric push rod 4. A drive roller group 5 is connected to the first electric push rod 4. Two toothed grooves 11 are opened in the inner wall of the first electric push rod 4. A limit tooth group 12 is fixedly connected to the inner wall of the toothed grooves 11.

[0031] Two support components are connected to the base 1. The support components include a support roller group 6, a linkage rod 7, and an L-shaped plate 8. One end of the linkage rod 7 is rotatably connected to the support roller group 6, and the other end of the linkage rod 7 is rotatably connected to the L-shaped plate 8. The L-shaped plate 8 is slidably connected to the inner wall of the second mounting frame 3. An iron slide rod 9 is slidably connected to the L-shaped plate 8. A locking tooth 10 is fixedly connected to one end of the iron slide rod 9. A connecting piece 14 is fixedly connected to the iron slide rod 9. The connecting piece 14 is connected to the L-shaped plate 8 through an elastic member 13. An internal grinding roller assembly is connected to the base 1, and an external grinding assembly 38 is connected to one of the first mounting frames 2.

[0032] Example 1:

[0033] refer to Figures 1-3 , Figure 6 In the initial state, the locking teeth 10 are inserted into the limiting teeth group 12 for limiting, and the electromagnet 16 is located above the iron slide bar 9. The workpiece 39 can be a tubular aluminum alloy die-cast part. Of course, the workpiece 39 can also be other metal tubular parts.

[0034] First, adjust the distance between the two support roller groups 6 to accommodate workpieces 39 of different sizes. Control the extension of the movable part of the first electric push rod 4, thereby driving the drive roller group 5, electromagnet 16, and transmission plate 17 to move downward. When the electromagnet 16 moves to the same height as the iron slide rod 9, control the electromagnet 16 to generate magnetic force. The electromagnet 16 attracts the two iron slide rods 9, and the iron slide rods 9 overcome the elastic force of the elastic element 13 and move between the two transmission plates 17. The locking teeth 10 disengage from the limiting teeth group 12, thereby releasing the L-shaped plate. The first electric push rod 4 continues to extend, and the upper transmission plate 17 pushes the two iron sliding rods 9 to move down, thereby causing the two L-shaped plates 8 to move down. The two L-shaped plates 8 drive the two support roller groups 6 to gradually approach each other through the two linkage rods 7. When the two support roller groups 6 approach to a suitable distance, the electromagnet 16 is de-energized, and the two iron sliding rods 9 move away from each other under the action of the elastic force of the elastic element 13. The locking teeth 10 are inserted into the limiting teeth group 12 to limit the L-shaped plates 8, thereby limiting the support roller group 6.

[0035] The workpiece 39 is placed on the two support roller groups 6, and the movable part of the first electric push rod 4 continues to extend until the drive roller group 5 presses the workpiece 39 tightly.

[0036] The workpiece 39 is pressed by the drive roller assembly 5, which drives the workpiece 39 to rotate. The external grinding assembly 38 is adjusted to a suitable length to grind the outer wall of the workpiece 39. The external grinding assembly 38 can also move back and forth to grind all parts of the outer wall of the workpiece 39. The inner wall of the workpiece 39 is ground by the internal grinding roller assembly.

[0037] The working principle of the two support roller groups 6 being far apart can be easily understood from the above working principle, that is, the electromagnet 16 is used to move the iron slide bar 9 between the two transmission plates 17, and the moving part of the electric push rod 4 is shortened.

[0038] The structure of the external grinding component 38 and the drive roller group 5 can be set with reference to the existing technology CN222570119U.

[0039] This embodiment can achieve the effect of adjusting the distance between the two support roller groups 6 and driving the roller group 5 to press the workpiece 39 by using only one first electric push rod 4, so as to adapt to workpieces 39 of different sizes. It can also automatically limit and release the two support roller groups 6, so as to achieve the effect of linkage and disconnection between the first electric push rod 4 and the support roller group 6. Unlike the prior art, it does not require multiple electric push rods, reducing the number of electrical components, reducing device maintenance costs, reducing maintenance difficulty and reducing component failure rate.

[0040] like Figure 4 As shown, in an optional embodiment of the present invention, the external grinding roller assembly includes a second electric push rod 18 and a lifting plate 19. The second electric push rod 18 is fixedly connected to the top wall of the base 1, and the lifting plate 19 is fixedly connected to the movable part of the second electric push rod 18. A first C-shaped frame 20 is fixedly connected to the lifting plate 19, and a threaded hole 21 is provided on the first C-shaped frame 20. An extension plate 28 is slidably connected to the lifting plate 19. A dual-axis motor 23 and a reducer 26 are fixedly connected to the extension plate 28. A grinding head 24 is fixedly connected to the output shaft on one side of the dual-axis motor 23, and the output shaft on the other side of the dual-axis motor 23 is fixedly connected to the input shaft of the reducer 26. A threaded rod 27 is fixedly connected to the output shaft of the reducer 26, and the threaded rod 27 is threadedly connected to the inner wall of the threaded hole 21.

[0041] like Figures 4-5 As shown, in an optional embodiment of the present invention, a first permanent magnet 25 is fixedly connected to the grinding head 24, an automatic water collection device 29 is fixedly connected to the top wall of the base 1, a water pipe body 30 is movably connected to the automatic water collection device 29, a nozzle assembly is fixedly connected to one end of the water pipe body 30, a second permanent magnet 33 is connected to the nozzle assembly, a nozzle support frame 34 is fixedly connected to the top wall of the base 1, the nozzle support frame 34 supports the water pipe body 30, and the water pipe body 30 is connected to an external water supply system.

[0042] like Figures 4-5As shown, in an optional embodiment of the present invention, the nozzle assembly includes a nozzle fixing part 31 and a nozzle rotating part 32. The nozzle fixing part 31 is fixedly connected to one end of the water pipe body 30, and the nozzle rotating part 32 is rotatably connected to the nozzle fixing part 31. The second permanent magnet 33 is fixedly connected to the nozzle rotating part 32. A water passage 35 is provided on the nozzle fixing part 31, and a water cavity 37 is provided on the nozzle rotating part 32. The water cavity 37 is connected to the outer wall of the nozzle rotating part 32 through two or more water outlet channels 36, and the water cavity 37 is connected to the water passage 35.

[0043] In an optional embodiment of the present invention, the first permanent magnet 25 is provided with an extension portion, and the second permanent magnet 33 is provided with a groove. The extension portion can be inserted into the groove to prevent the second permanent magnet 33 from disengaging from the first permanent magnet 25 when rotating.

[0044] In an optional embodiment of the present invention, an electric valve is connected to the inner wall of the water passage 35, and a distance sensor is connected to the nozzle fixing part 31. The distance sensor can detect the distance of the grinding head 24, and the processing module inside the distance sensor can control the electric valve to open and close.

[0045] In an optional embodiment of the present invention, a controller is provided on the base 1. The controller is used to control the operation of various electrical components.

[0046] According to an optional embodiment of the present invention, the movable part of the second electric push rod 18 is fixedly connected to the lifting plate 19 via the second bracket 22.

[0047] In an optional embodiment of the present invention, two or more balls 15 are rolledly connected to the transmission plate 17. The balls 15 can reduce the friction between the iron slide rod 9 and the transmission plate 17, making it easier for the iron slide rod 9 to disengage from the transmission plate 17.

[0048] Example 2:

[0049] Reference Figure 4 Based on the implementation of point one, the operating principle of the internal grinding roller assembly will be explained.

[0050] When the dual-axis motor 23 starts, the output shaft on the right side of the dual-axis motor 23 drives the grinding head 24 to rotate rapidly. After being reduced by the reducer 26, the output shaft on the left side of the dual-axis motor 23 drives the threaded rod 27 to rotate slowly. Since the threaded rod 27 and the threaded hole 21 are threadedly connected, and the first C-shaped frame 20 is fixed to the lifting plate 19, the dual-axis motor 23 will drive the grinding head 24 and the extension plate 28 to move to the right. The grinding head 24 enters the external grinding assembly 38. The movable part of the second electric push rod 18 can adjust the height of the lifting plate 19, thereby adjusting the height of the grinding head 24, so that the grinding head 24 grinds the inner wall of the external grinding assembly 38. The grinding head 24 gradually moves to the right to grind all positions of the inner wall of the external grinding assembly 38. After grinding, the first permanent magnet 25 and the second permanent magnet 33 will magnetically connect when they come close together. The extension on the first permanent magnet 25 will insert into the groove of the second permanent magnet 33 to prevent the second permanent magnet 33 from detaching from the first permanent magnet 25 when it rotates. After the distance sensor on the nozzle fixing part 31 detects the approach of the grinding head 24, it will open the electric valve in the water passage 35. Water from the external water supply system enters the water passage 35 and the water chamber 37 and sprays out from all the water outlets 36. The dual-axis motor 23 reverses the grinding head 24, which will drive the second permanent magnet 33 and the nozzle rotating part 32 to rotate and move to the left. The water pipe 30 will gradually be released from the automatic water collector 29. The rotation of the nozzle rotating part 32 will make the water sprayed from the water outlet 36 more thoroughly rinse and clean the inner wall of the external grinding component 38, removing debris and grease from the inner wall of the external grinding component 38. There is no need for personnel to use other tools to clean the inner wall of the external grinding component 38, thus improving processing efficiency. When the water pipe body 30 extends to its limit, the grinding head 24 continues to move to the left, and the second permanent magnet 33 can no longer move to the left. The second permanent magnet 33 will disengage from the grinding head 24 and the water pipe body 30 will be retracted under the self-retracting force of the automatic water pipe retractor 29 until the nozzle fixing part 31 and the nozzle support frame 34 come into contact and the retraction stops, and the nozzle assembly is reset.

[0051] This embodiment utilizes a single electrical component, a dual-axis motor 23, to simultaneously rotate the grinding head 24 and move it within the external grinding assembly 38. This eliminates the need for multiple electric push rods as in existing technologies, further reducing the number of electrical components, maintenance costs, maintenance difficulty, and component failure rate. Furthermore, through a distance sensor, after the grinding head 24 has finished grinding the inner wall of the external grinding assembly 38, water is sprayed from the water outlet channel 36. The magnetic force of the first permanent magnet 25 drives the nozzle assembly to simultaneously translate and rotate while spraying water, achieving automatic rinsing of the inner wall of the external grinding assembly 38. This solves the technical problem of difficulty in cleaning the inner wall of the external grinding assembly 38 in existing technologies, thereby improving production efficiency.

[0052] A grinding method for an aluminum alloy die casting includes grinding a workpiece 39 using the aforementioned grinding equipment, placing the workpiece 39 on two support roller groups 6, pressing the workpiece 39 with a drive roller group 5, grinding the inner wall of the workpiece 39 with an internal grinding roller assembly, and grinding the outer wall of the workpiece 39 with an external grinding assembly 38.

[0053] The components, modules, mechanisms, and devices in this invention that are not described in detail are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A grinding device for aluminum alloy die-cast parts, characterized in that, Includes a base (1), two first mounting brackets (2) are fixed to the top wall of the base (1), and a second mounting bracket (3) is fixed to the two first mounting brackets (2). A first electric push rod (4) is fixed to the second mounting bracket (3). An electromagnet (16) and two transmission plates (17) are fixed to the movable part of the first electric push rod (4). A drive roller group (5) is connected to the first electric push rod (4). Two toothed grooves (11) are opened on the inner wall of the second mounting bracket (3). A limit tooth group (12) is fixed to the inner wall of the toothed groove (11). Two support components are connected to the base (1). The support components include a support roller group (6), a linkage rod (7), and an L-shaped plate (8). One end of the linkage rod (7) is rotatably connected to the support roller group (6), and the other end of the linkage rod (7) is rotatably connected to the L-shaped plate (8). The L-shaped plate (8) is slidably connected to the inner wall of the second mounting frame (3). An iron slide rod (9) is slidably connected to the L-shaped plate (8). A tooth (10) is fixedly connected to one end of the iron slide rod (9). A connecting piece (14) is fixedly connected to the iron slide rod (9). The connecting piece (14) is connected to the L-shaped plate (8) through an elastic element (13). An internal grinding roller assembly is connected to the base (1), and an external grinding assembly (38) is connected to one of the first mounting frames (2).

2. The grinding equipment for aluminum alloy die castings according to claim 1, characterized in that, The external grinding roller assembly includes a second electric push rod (18) and a lifting plate (19). The second electric push rod (18) is fixed to the top wall of the base (1). The lifting plate (19) is fixed to the movable part of the second electric push rod (18). A first guilloché frame (20) is fixed to the lifting plate (19). A threaded hole (21) is opened on the first guilloché frame (20). An extension plate (28) is slidably connected to the lifting plate (19). A dual-axis motor (23) and a reducer (26) are fixed to the extension plate (28). A grinding head (24) is fixed to the output shaft on one side of the dual-axis motor (23). The output shaft on the other side of the dual-axis motor (23) is fixed to the input shaft of the reducer (26). A threaded rod (27) is fixed to the output shaft of the reducer (26). The threaded rod (27) is threaded to the inner wall of the threaded hole (21).

3. The grinding equipment for aluminum alloy die-casting parts according to claim 2, characterized in that, A first permanent magnet (25) is fixedly connected to the grinding head (24). An automatic water collection device (29) is fixedly connected to the top wall of the base (1). A water pipe body (30) is movably connected to the automatic water collection device (29). A nozzle assembly is fixedly connected to one end of the water pipe body (30). A second permanent magnet (33) is connected to the nozzle assembly. A nozzle support frame (34) is fixedly connected to the top wall of the base (1). The nozzle support frame (34) supports the water pipe body (30). The water pipe body (30) is connected to an external water supply system.

4. The grinding equipment for aluminum alloy die castings according to claim 3, characterized in that, The nozzle assembly includes a nozzle fixing part (31) and a nozzle rotating part (32). The nozzle fixing part (31) is fixed to one end of the water pipe body (30). The nozzle rotating part (32) is rotatably connected to the nozzle fixing part (31). The second permanent magnet (33) is fixed to the nozzle rotating part (32). A water passage (35) is provided on the nozzle fixing part (31). A water cavity (37) is provided on the nozzle rotating part (32). The water cavity (37) is connected to the outer wall of the nozzle rotating part (32) through two or more water outlet channels (36). The water cavity (37) is connected to the water passage (35).

5. The grinding equipment for aluminum alloy die-castings according to claim 4, characterized in that, The first permanent magnet (25) has an extension, and the second permanent magnet (33) has a groove.

6. The grinding equipment for aluminum alloy die castings according to claim 5, characterized in that, An electric valve is connected to the inner wall of the water passage (35), and a distance sensor is connected to the nozzle fixing part (31).

7. A grinding device for aluminum alloy die-castings according to claim 6, characterized in that, The base (1) is equipped with a controller.

8. The grinding equipment for aluminum alloy die castings according to claim 7, characterized in that, The movable part of the second electric push rod (18) is fixedly connected to the second bracket (22) and the lifting plate (19).

9. A grinding device for aluminum alloy die-castings according to claim 8, characterized in that, The transmission plate (17) has two or more rolling balls (15) connected to it.

10. A grinding method for aluminum alloy die-cast parts, characterized in that, The method includes grinding the workpiece (39) using a grinding device for aluminum alloy die castings according to any one of claims 1-9, placing the workpiece (39) on two support roller groups (6), pressing the workpiece (39) with a drive roller group (5), grinding the inner wall of the workpiece (39) with an internal grinding roller assembly, and grinding the outer wall of the workpiece (39) with an external grinding assembly (38).

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