A magnesium alloy die-casting part grinding device

Abstract

The present invention relates to the technical field of magnesium alloy processing equipment, and discloses a grinding device for magnesium alloy die-castings, including a driving body that provides a power source for the grinding operation. An outer housing is provided on the driving body. On both sides of the outer housing, there are respectively a hole grinding member for grinding the hole parts of the workpiece and a surface grinding member for grinding the surface of the workpiece. A control member for separately controlling the hole grinding member and the surface grinding member is provided inside the outer housing. By setting the surface grinding member and the hole grinding member, the grinding device can perform surface and hole grinding on the castings. Among them, the control member can achieve separate control and rapid switching of the surface grinding member and the hole grinding member, so that the engaging members at both ends of the moving rod are engaged and docked with different connecting members, thus easily realizing the conversion between the surface grinding and hole grinding modes without frequently replacing the grinding tools, greatly improving the grinding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of magnesium alloy processing equipment, and particularly to a grinding device for magnesium alloy die-castings. Background Art

[0002] In the field of automobile manufacturing, magnesium alloys are widely used in the production of automobile parts due to their advantages such as light weight, high strength, and good shock absorption. After die-casting, magnesium alloy automobile parts usually need to be ground to meet the quality and assembly requirements of products because of problems such as flash, burrs, and dimensional accuracy on the surface.

[0003] Currently, manual grinding with a handheld grinder is one of the common methods for grinding magnesium alloy automobile parts. Although this method has a certain degree of flexibility, it has many drawbacks. Manual grinding has a high labor intensity, requires high operating skills of workers, and the grinding quality is greatly affected by factors such as the proficiency and working state of workers, making it difficult to ensure the consistency and stability of grinding quality. Long-term engagement in grinding work can also cause harm to the physical health of workers, such as respiratory diseases caused by dust pollution, and physical fatigue and injuries caused by long-term holding of the handheld grinder.

[0004] Especially for some magnesium alloy automobile parts with holes, the grinding operation is more complex. During the grinding process, not only the surface of the part needs to be treated, but also the inside of the holes needs to be ground to ensure the dimensional accuracy and surface quality of the holes. However, the existing grinding methods require operators to frequently replace different types of grinders, which are respectively used for grinding the surface and holes of the parts. This frequent replacement of grinders greatly reduces the grinding efficiency, increases the production time and cost. Moreover, frequent replacement of grinders easily leads to operation errors, such as accidental damage to the parts during the switching process, affecting the product quality. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a grinding device for magnesium alloy die-castings, which can achieve efficient and precise grinding of the surface and holes of magnesium alloy die-castings, and solve the problems of low efficiency and inconvenient function switching existing in the existing grinding methods.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A grinding device for magnesium alloy die-castings includes a driving main body that provides a power source for the grinding operation. An outer housing is provided on the driving main body. On both sides of the outer housing, a hole grinding member for grinding the hole part of the workpiece and a surface grinding member for grinding the surface of the workpiece are respectively provided. A control member for separately controlling the hole grinding member and the surface grinding member is provided inside the outer housing.

[0008] Preferably, the control member includes a first fixing plate, a second fixing plate, and a second bevel gear set. The first fixing plate and the second fixing plate are both installed inside the housing. A sleeve is provided on the first fixing plate. A moving rod is movably arranged inside the sleeve. The output shaft on the driving body is in transmission connection with the sleeve through a transmission member. Meshing members are provided at both ends of the moving rod. The output shaft on the driving body is in transmission connection with the first bevel gear set. The first bevel gear set drives the transmission gear set to operate, and then power transmission is carried out. Both the first bevel gear set and the transmission gear set are prior arts. The first bevel gear set is composed of two bevel gears, and the transmission gear set is composed of multiple gears. The bevel gears and the gears are both rotatably arranged in the housing through rotating pins.

[0009] Preferably, a second limiting end is provided on the moving rod, and a second limiting groove corresponding to the second limiting end is provided inside the sleeve. The second limiting end is located in the second limiting groove. The sleeve is rotatably connected to the first fixing plate. By positioning and supporting the sleeve through the first fixing plate, the sleeve can be rotatably arranged in the housing.

[0010] Preferably, connecting members for docking with the meshing members are provided on both the left and right sides of the housing. The meshing member includes a meshing plate, and a plurality of first meshing teeth are equidistantly arranged on the meshing plate. A switching member for driving its movement and switching is provided on the moving rod. The connecting member connected to the surface grinding member is fixed inside the housing through the second fixing plate, and the connecting member of the hole grinding member is provided on the housing. The connecting member includes a rotating shaft, and a meshing ring is provided on the rotating shaft. A plurality of second meshing teeth are equidistantly arranged on the meshing ring. The connecting members provided on both the left and right sides of the housing establish a bridge for power transmission between the surface grinding member and the hole grinding member and the control member.

[0011] Preferably, the switching member includes a moving plate, and a connecting rod is provided on the moving plate. The moving plate is arranged on the moving rod and is rotatably connected thereto. The connecting rod is movably arranged on the second fixing plate. A control rod connected to the surface grinding member is provided on the connecting rod. The control rod connected to the surface grinding member on the connecting rod provides an intuitive operating component for the operator. By operating the control rod, the movement of the moving plate can be conveniently controlled, and thus the meshing and switching between the moving rod and different connecting members can be realized.

[0012] Preferably, the surface grinding part includes a connecting plate, a positioning part and a rotating wheel, the connecting plate is provided with a rotatable rotating plate, the positioning part is arranged on the connecting plate to position the rotating plate, the rotating plate is provided with a connecting end, the connecting end is sleeved with a sleeve plate, the sleeve plate is connected to the rotating plate by bolts, the sleeve plate is provided with a rotating wheel 2 at one end of the sleeve plate away from the connecting plate, the rotating wheel 1 is connected to the control part, the rotating wheel 1 is connected to the adjacent rotating shaft, the rotating wheel 1 and the rotating wheel 2 are sleeved with a grinding belt, and two limit blocks are symmetrically provided on the connecting plate, the rotation angle of the rotating plate can be limited by the limit blocks, so that the rotating plate can only rotate 180 degrees, wherein the sleeve plate is connected to the connecting end of the rotating plate by bolts, and the overall length of the surface grinding part can be adjusted by removing the bolts, and the rotating plate can be rotated and can be rotated and folded when not in use to avoid the large size of the grinding equipment being inconvenient to place.

[0013] Preferably, a connecting platform is provided on the connecting plate 1, the rotating plate is rotatably connected to the connecting platform, a mounting through hole is provided on the connecting plate 1, a control ring is provided in the mounting through hole, a through hole is provided on the side where the outer shell and the connecting plate are connected, the control ring passes through the through hole on the outer shell and is connected to the control member, the control ring arranged in the mounting through hole is connected to the control member by passing through the through hole on the outer shell, thereby establishing a connection between the surface grinding member and the control member, and the control rod is driven to move through the guide hole, thereby realizing the movement of the moving rod and the switching of the grinding mode.

[0014] Preferably, a guide hole is provided on the control ring, the control rod on the connecting rod is in the guide hole, and the rotating shaft connected to the surface grinding part passes through the middle of the control ring and is connected to the rotating wheel. The guide hole on the control ring cooperates with the control rod on the connecting rod to provide precise guidance for the movement of the control rod. When the rotating plate rotates, it drives the control ring to rotate. The control ring can accurately pull or push the control rod through the guide hole, thereby driving the connecting rod, the movable plate and the movable rod to move accordingly, thereby realizing the engagement switching of the movable rod with different connecting parts.

[0015] Preferably, the hole grinding member includes a second connecting plate, a protective shell is provided on the second connecting plate, a driving shaft is rotatably provided on the protective shell, and a rotating shaft connected to the hole grinding member is located inside the protective shell and is transmission-connected to the driving shaft through a bevel gear set, and a grinding chuck is provided at one end of the driving shaft outside the protective shell, and a grinding rod for grinding holes is provided on the grinding chuck. When in use, the grinding chuck is an existing publicly available technology, which is used to clamp the grinding rod so that the driving shaft can drive the grinding rod to rotate to grind the holes.

[0016] Preferably, the positioning member includes a fixing block, a rotating rod threadedly connected to the fixing block, a rotating block provided at the upper end of the rotating rod, a positioning block rotatably connected to the lower end of the rotating rod, a first limiting end provided on the positioning block, a first limiting groove corresponding to the first limiting end provided on the first connecting plate, the first limiting end being located in the first limiting groove, and the positioning block can be limited by the first limiting end so that the positioning block can only move up and down. There are also a plurality of positioning ends provided below the positioning block, and a plurality of positioning grooves corresponding to the positioning ends are provided on both the upper and lower sides of the rotating plate. The positioning stability between the positioning block and the rotating plate can be improved by the positioning ends being located in the positioning grooves, and the rotating block facilitates the user to rotate the rotating rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By providing a surface grinding member and a hole grinding member, the grinding device of the present invention can perform surface and hole grinding on the casting. The control member can achieve independent control and rapid switching of the surface grinding member and the hole grinding member, enabling the engaging members at both ends of the moving rod to engage and dock with different connecting members, thereby easily realizing the conversion between the surface grinding mode and the hole grinding mode without frequently replacing the grinding tools, greatly improving the grinding efficiency;

[0019] At the same time, the rotating plate of the surface grinding member can be rotated and retracted when not in use, reducing the occupied space of the device, facilitating placement and storage, and avoiding the surface grinding member from affecting the use of the hole grinding member. The position of the surface grinding member can be stably fixed by the positioning member. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a view of the position of the control member of the present invention;

[0023] Figure 3 It is a connection view of the control member, the surface grinding member and the hole grinding member of the present invention;

[0024] Figure 4 It is another perspective connection view of the control member, the surface grinding member and the hole grinding member of the present invention;

[0025] Figure 5 It is an exploded view of the structure of the surface grinding member of the present invention;

[0026] Figure 6 Separate view of the positioning member and the first connecting plate of the present invention;

[0027] Figure 7 Structural view of the hole grinding member of the present invention;

[0028] Figure 8 Structural view of the control member of the present invention;

[0029] Figure 9 Exploded view of the control member structure of the present invention;

[0030] Figure 10 For the present invention Figure 9 Enlarged view of part A;

[0031] Figure 11 Structural view of the connecting member of the present invention;

[0032] Figure 12 Structural view of the control ring of the present invention;

[0033] Figure 13 View of the surface grinding member rotated out for use of the present invention.

[0034] Explanation of drawing numbers: 1. Driving main body; 2. Outer shell; 21. Grip; 3. Surface grinding member; 31. First connecting plate; 311. Connecting platform; 312. Limiting block; 313. First limiting groove; 32. Rotating plate; 321. Connecting end; 322. Positioning groove; 33. Control ring; 331. Guide hole; 34. Positioning member; 341. Fixed block; 342. Positioning block; 3421. First limiting end; 3422. Positioning end; 343. Rotating rod; 344. Rotating block; 35. Sleeve plate; 36. First runner; 37. Second runner; 4. Hole grinding member; 41. Second connecting plate; 42. Protective shell; 43. First bevel gear set; 44. Driving shaft; 45. Grinding chuck; 5. Control member; 51. Second bevel gear set; 52. Rotating pin; 53. Transmission gear set; 54. Sleeve; 541. Second limiting groove; 55. First fixing plate; 56. Moving rod; 561. Second limiting end; 57. Engaging member; 571. Engaging plate; 572. First engaging tooth; 58. Switching member; 581. Moving plate; 582. Connecting rod; 583. Control rod; 584. Second fixing plate; 59. Connecting member; 591. Rotating shaft; 592. Engaging ring; 593. Second engaging tooth. Detailed implementation manners

[0035] The present invention will be further described in detail below with reference to the accompanying drawings.

[0036] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used for other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0037] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0038] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0039] See also Figure 1-13 A magnesium alloy die-casting grinding device includes a driving body 1 that provides a power source for the grinding operation, an outer shell 2 is provided on the driving body 1, and hole grinding parts 4 for grinding the hole parts of the workpiece and surface grinding parts 3 for grinding the surface of the workpiece are respectively provided on both sides of the outer shell 2. A control part 5 for separately controlling the hole grinding part 4 and the surface grinding part 3 is provided in the outer shell 2. A handle 21 is also provided on the outer shell 2 to facilitate the user to hold the grinding device when grinding.

[0040] The control member 5 includes a fixed plate 1 55, a fixed plate 2 584 and a bevel gear group 2 51. The fixed plate 1 55 and the fixed plate 2 584 are both installed in the outer shell 2. A sleeve 54 is provided on the fixed plate 1 55. A moving rod 56 is movably provided in the sleeve 54. The output shaft on the driving body 1 is transmission-connected with the sleeve 54 through a transmission component. Engaging members 57 are provided at both ends of the moving rod 56. The output shaft on the driving body 1 is transmission-connected with the bevel gear group 1 43. The bevel gear group 1 43 drives the transmission gear group 53 to operate, and then power is transmitted. The bevel gear group 1 43 and the transmission gear group 53 are both prior arts. The bevel gear group 1 43 is composed of two bevel gears, and the transmission gear group 53 is composed of multiple gears, wherein the bevel gears and the gears are both rotatably arranged in the outer shell 2 through a rotating pin 52.

[0041] A limiting end two 561 is provided on the moving rod 56, and a limiting groove two 541 corresponding to the limiting end two 561 is provided inside the sleeve 54. The limiting end two 561 is located in the limiting groove two 541. The sleeve 54 is rotatably connected to the fixing plate one 55. By positioning and supporting the sleeve 54 through the fixing plate one 55, the sleeve 54 can be rotatably arranged in the outer housing 2.

[0042] Connectors 59 for docking with the meshing member 57 are provided on both the left and right sides of the outer housing 2. The meshing member 57 includes a meshing plate 571, and a plurality of meshing teeth one 572 are equidistantly arranged on the meshing plate 571. A switching member 58 for driving its movement and switching is provided on the moving rod 56. The connector 59 connected to the surface grinding member 3 is fixed inside the outer housing 2 through the fixing plate two 584, and the connector 59 of the hole grinding member 4 is arranged on the outer housing 2. The connector 59 includes a rotating shaft 591, and a meshing ring 592 is provided on the rotating shaft 591. A plurality of meshing teeth two 593 are equidistantly arranged on the meshing ring 592. The connectors 59 arranged on both the left and right sides of the outer housing 2 build a bridge for power transmission between the surface grinding member 3 and the hole grinding member 4 and the control member 5.

[0043] The switching member 58 includes a moving plate 581, and a connecting rod 582 is provided on the moving plate 581. The moving plate 581 is arranged on the moving rod 56 and is rotatably connected thereto. The connecting rod 582 is movably arranged on the fixing plate two 584. A control rod 583 connected to the surface grinding member 3 is provided on the connecting rod 582. The control rod 583 connected to the surface grinding member 3 on the connecting rod 582 provides an intuitive operating component for the operator. By operating the control rod 583, the movement of the moving plate 581 can be conveniently controlled, thereby realizing the meshing and switching between the moving rod 56 and different connectors 59.

[0044] The surface grinding member 3 includes a connecting plate one 31, a positioning member 34, and a runner one 36. A rotatable turning plate 32 is provided on the connecting plate one 31. The positioning member 34 is arranged on the connecting plate one 31 to position the turning plate 32. A connecting end 321 is provided on the turning plate 32, and a sleeve plate 35 is sleeved on the connecting end 321. The sleeve plate 35 is connected to the turning plate 32 by bolts. A runner two 37 is provided at the end of the sleeve plate 35 away from the connecting plate one 31. The runner one 36 is connected to the control member 5, and the runner one 36 is connected to the adjacent rotating shaft 591. A grinding belt is sleeved on the runner one 36 and the runner two 37. Two limiting blocks 312 are symmetrically provided on the connecting plate. The rotation angle of the turning plate 32 can be limited through the limiting blocks 312, so that the turning plate 32 can only rotate 180 degrees. Among them, the sleeve plate 35 is connected to the connecting end 321 on the turning plate 32 by bolts. By removing the bolts, the overall length of the surface grinding member 3 can be adjusted, and the turning plate 32 can be rotated and retracted when not in use to avoid the large volume of the grinding equipment and inconvenient placement.

[0045] A connecting plate one 31 is provided with a connecting platform 311, a rotating plate 32 is rotatably connected to the connecting platform 311, the connecting plate one 31 is provided with an installation through-hole, a control ring 33 is arranged in the installation through-hole, a perforation is arranged on one side of the outer housing 2 connected to the connecting plate one 31, the control ring 33 passes through the perforation on the outer housing 2 and is connected to the control member 5. The control ring 33 arranged in the installation through-hole is connected to the control member 5 by passing through the perforation on the outer housing 2, establishing a connection between the surface grinding member 3 and the control member 5. The control rod 583 is driven to move through the guiding hole 331, thereby realizing the movement of the moving rod 56 and the switching of the grinding mode.

[0046] The control ring 33 is provided with a guiding hole 331, the control rod 583 on the connecting rod 582 is located in the guiding hole 331, the rotating shaft 591 connected to the surface grinding member 3 passes through the middle of the control ring 33 and is connected to the first runner 36. The guiding hole 331 on the control ring 33 and the control rod 583 on the connecting rod 582 cooperate with each other, providing accurate guidance for the movement of the control rod 583. When the rotating plate 32 rotates, it drives the control ring 33 to rotate. The control ring 33 can accurately pull or push the control rod 583 through the guiding hole 331, thereby driving the connecting rod 582, the moving plate 581 and the moving rod 56 to move correspondingly, realizing the meshing switching of the moving rod 56 with different connecting members 59.

[0047] The hole grinding member 4 includes a connecting plate two 41, the connecting plate two 41 is provided with a protective shell 42, a driving shaft 44 is rotatably arranged on the protective shell 42, one end of the rotating shaft 591 connected to the hole grinding member 4 located inside the protective shell 42 is in transmission connection with the driving shaft 44 through a first bevel gear set 43, one end of the driving shaft 44 located outside the protective shell 42 is provided with a grinding chuck 45, and a grinding rod for grinding the hole is arranged on the grinding chuck 45. The grinding chuck 45 is an existing publicly disclosed technology in use, used to clamp the grinding rod, so that the driving shaft 44 can drive the grinding rod to rotate for hole grinding treatment.

[0048] The positioning member 34 includes a fixed block 341, a rotating rod 343 is threadedly connected to the fixed block 341, a rotating block 344 is arranged at the upper end of the rotating rod 343, a positioning block 342 is rotatably connected to the lower end of the rotating rod 343, a first limiting end 3421 is arranged on the positioning block 342, and a first limiting groove 313 corresponding to the first limiting end 3421 is arranged on the connecting plate one 31. The first limiting end 3421 is located in the first limiting groove 313, and the positioning block 342 can be limited through the first limiting end 3421, so that the positioning block 342 can only move up and down. A plurality of positioning ends 3422 are further arranged below the positioning block 342, and a plurality of positioning grooves 322 corresponding to the positioning ends 3422 are arranged on both the upper and lower sides of the rotating plate 32. The positioning stability of the positioning block 342 and the rotating plate 32 can be improved by the positioning ends 3422 being located in the positioning grooves 322, and the rotating block 344 facilitates the user to rotate the rotating rod 343.

[0049] The output shaft of the driving body 1 is in transmission connection with the sleeve 54 through a transmission component. When the driving body 1 works, its output shaft drives the sleeve 54 to rotate through the transmission component. When the sleeve 54 rotates, it can drive the moving rod 56 to rotate together. The engaging members 57 at both ends of the moving rod 56 can be respectively engaged and butted with the connecting members 59 on both sides of the outer casing 2. The moving rod 56 can drive the connecting member 59 engaged and connected with it to operate through the engaging member 57;

[0050] When an operator performs surface grinding, rotate the rotating block 344. The rotating block 344 drives the rotating rod 343 to rotate, causing the rotating rod 343 to move upward. The rotating rod 343 drives the positioning block 342 to move upward away from the first connecting plate 31. After moving the positioning block 342 to an appropriate position, rotate the rotating plate 32 outward. When the rotating plate 32 rotates outward, it will drive the control ring 33 to rotate together. When the control ring 33 rotates, it can drive the control rod 583 to move through the guiding hole 331, so that the control rod 583 pulls the connecting rod 582, and then pulls the moving plate 581. The moving plate 581 drives the moving rod 56 to move, and can move it towards the surface grinding member 3, so that the engaging member 57 on the moving rod 56 close to the surface grinding member 3 is engaged and butted with the connecting member 59 close to the surface grinding member 3. The rotating plate 32 rotates 180 degrees and fits with the lower limiting block 312. At this time, the surface grinding member 3 has been rotated out. Then rotate the rotating block 344. The rotating block 344 drives the positioning block 342 to move the positioning block 342 downward until it contacts the rotating plate 32. The positioning end 3422 on the positioning block 342 is located in the positioning groove 322, and the rotating plate 32 is stably positioned through the positioning member 34. At this time, start the grinding equipment. When the output shaft on the starting body drives the sleeve 54 to rotate, the sleeve 54 drives the moving rod 56 to rotate, and then can drive the connecting member 59 corresponding to the surface grinding member 3 to rotate. The rotating shaft 591 of the connecting member 59 drives the first runner 36 to rotate when rotating, and then drives the grinding belt to rotate in a cycle. At this time, the user can grind the surface of the casting through the grinding belt;

[0051] Complete the surface grinding of the casting. When grinding the holes, rotate the rotating block 344 to move the positioning block 342 away from the rotating plate 32, then rotate and retract the rotating plate 32, and then press and position the rotating plate 32 through the positioning member 34. When the rotating plate 32 rotates back to its original position, the control ring 33 drives the control rod 583 to move towards the hole grinding member 4, so that the connecting rod 582 pushes the moving plate 581 towards the hole grinding member 4. The moving plate 581 drives the moving rod 56 to move towards the hole grinding member 4, so that the engaging member 57 on the moving rod 56 close to the hole grinding member 4 engages and docks with the connecting member 59 close to the hole grinding member 4. Then, when starting the grinding equipment, at this time, the moving rod 56 drives the engaging ring 592 engaged with it to rotate when rotating, and then drives the corresponding rotating shaft 591 to rotate, and then drives the first bevel gear set 43 to operate. The first bevel gear set 43 drives the drive shaft 44 to rotate, and the drive shaft 44 drives the grinding rod to rotate through the grinding chuck 45. The user can grind the holes of the casting through the rotating grinding rod.

[0052] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and described in the embodiments. Without departing from the said principles, the embodiments of the present invention can have any deformation or modification.

Claims

1. A magnesium alloy die-casting part grinding device, characterized in that, It includes a driving body (1) that provides a power source for the grinding operation. An outer housing (2) is provided on the driving body (1). On both sides of the outer housing (2), there are respectively a hole grinding member (4) for grinding the hole part of the workpiece and a surface grinding member (3) for grinding the surface of the workpiece. A control member (5) for separately controlling the hole grinding member (4) and the surface grinding member (3) is provided inside the outer housing (2). The control member (5) includes a first fixing plate (55), a second fixing plate (584), and a second bevel gear set (51). A sleeve (54) is provided on the first fixing plate (55). A moving rod (56) is movably arranged inside the sleeve (54). Engaging members (57) are provided at both ends of the moving rod (56). Both the first fixing plate (55) and the second fixing plate (584) are installed inside the outer housing (2). The output shaft on the driving body (1) is in transmission connection with the sleeve (54) through a transmission component. Connectors (59) for docking with the engaging members (57) are provided on both the left and right sides of the outer housing (2). The engaging member (57) includes an engaging plate (571). A switching member (58) for driving its movement and switching is provided on the moving rod (56). The switching member (58) includes a moving plate (581). A connecting rod (582) is provided on the moving plate (581). The moving plate (581) is arranged on the moving rod (56) and is rotatably connected thereto. The connecting rod (582) is movably arranged on the second fixing plate (584). A control rod (583) connected to the surface grinding member (3) is provided on the connecting rod (582). The surface grinding member (3) includes a first connecting plate (31), a positioning member (34), and a first runner (36). A rotatable rotating plate (32) is provided on the first connecting plate (31). The positioning member (34) is provided on the first connecting plate (31) to position the rotating plate (32). A connecting end (321) is provided on the rotating plate (32). A sleeve plate (35) is sleeved on the connecting end (321). The sleeve plate (35) is connected to the rotating plate (32) by bolts. A second runner (37) is provided at the end of the sleeve plate (35) away from the first connecting plate (31). The first runner (36) is connected to the control member (5). The first runner (36) is connected to the adjacent rotating shaft (591). A grinding belt is sleeved on the first runner (36) and the second runner (37). A plurality of engaging teeth one (572) are equidistantly provided on the engaging plate (571). The connector (59) connected to the surface grinding member (3) is fixed inside the outer housing (2) through the second fixing plate (584). The connector (59) connected to the hole grinding member (4) is provided on the outer housing (2). The connector (59) includes a rotating shaft (591). An engaging ring (592) is provided on the rotating shaft (591). A plurality of engaging teeth two (593) are equidistantly provided on the engaging ring (592). The hole grinding member (4) includes a second connecting plate (41). A protective shell (42) is provided on the second connecting plate (41). A drive shaft (44) is rotatably provided on the protective shell (42). One end of the rotating shaft (591) connected to the hole grinding member (4) inside the protective shell (42) is in transmission connection with the drive shaft (44) through a first bevel gear set (43). One end of the drive shaft (44) outside the protective shell (42) is provided with a grinding chuck (45). A grinding rod for grinding the hole is provided on the grinding chuck (45).

2. The grinding device for magnesium alloy die-castings according to claim 1, wherein: A second limiting end (561) is provided on the moving rod (56). A second limiting groove (541) corresponding to the second limiting end (561) is provided inside the sleeve (54). The second limiting end (561) is located in the second limiting groove (541). The sleeve (54) is rotatably connected to the first fixing plate (55).

3. The magnesium alloy die-casting part grinding device according to claim 1, wherein: A connecting platform (311) is provided on the first connecting plate (31). The rotating plate (32) is rotatably connected to the connecting platform (311). An installation through hole is provided on the first connecting plate (31). A control ring (33) is provided in the installation through hole. A through hole is provided on one side of the outer housing (2) connected to the first connecting plate (31). The control ring (33) passes through the through hole on the outer housing (2) and is connected to the control member (5).

4. The grinding device for magnesium alloy die-castings according to claim 3, wherein: A guiding hole (331) is provided on the control ring (33). A control rod (583) on the connecting rod (582) is located in the guiding hole (331). The rotating shaft (591) connected to the surface grinding member (3) passes through the middle of the control ring (33) and is connected to the first runner (36).

5. The magnesium alloy die-casting part grinding device according to claim 4, characterized in that: The positioning member (34) includes a fixed block (341). A rotating rod (343) threadedly connected to the fixed block (341) is provided on the fixed block (341). A rotating block (344) is provided at the upper end of the rotating rod (343). A positioning block (342) rotatably connected to the rotating rod (343) is provided at the lower end of the rotating rod (343). A first limiting end (3421) is provided on the positioning block (342). A limiting groove corresponding to the first limiting end (3421) is provided on the first connecting plate (31). The first limiting end (3421) is located in the limiting groove.

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