Polishing device for spherical casting and polishing method of polishing device

Abstract

The invention discloses a grinding device for a spherical casting and a grinding method thereof, and relates to the technical field of spherical casting grinding, the grinding device comprises a base, a supporting mechanism and a suction mechanism, the top end of the base is provided with a grinding mechanism, the supporting mechanism is arranged at the top end of the base, a swing mechanism comprises a supporting seat, and the top end of the supporting seat is provided with a clamping mechanism; a first rotating shaft is fixedly connected to the bottom end of the supporting seat and rotationally connected to the top end of the base, a swing mechanism is arranged in the base, and the suction mechanism is arranged at the top end of the base. By means of the arrangement of the supporting mechanism and the cooperation of the swing mechanism, the first rotating shaft can drive the supporting base to swing in a reciprocating mode, so that the spherical casting is clamped and rotated through the clamping mechanism to be ground, meanwhile, the grinding area can be increased in a swing mode, and the grinding efficiency of the spherical casting is improved.

Description

Technical Field

[0001] The invention relates to the technical field of spherical casting grinding, in particular to a spherical casting grinding device and a grinding method thereof. Background Art

[0002] Spherical castings are castings with a spherical shape. Spherical castings are obtained by casting.

[0003] The spherical casting needs to be polished after cooling to remove the fleshy protrusions on the surface of the spherical casting to make the surface of the spherical casting smooth. There are mostly two ways to polish the spherical casting. One is that the abrasive is fixed and the spherical casting rotates along the abrasive. The other is that the spherical casting is fixed and the abrasive moves along the outer wall of the spherical casting for polishing. However, the spherical casting is spherical. No matter which method is used, the contact area between the spherical casting and the abrasive is limited during the polishing process, and multiple rotation angles are required for polishing, thereby reducing the polishing efficiency. For this reason, we propose a polishing device and a polishing method for spherical castings. Summary of the invention

[0004] The object of the present invention is to provide a grinding device and a grinding method for spherical castings to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a grinding device for spherical castings, comprising:

[0006] A base, wherein a polishing mechanism is disposed on the top of the base;

[0007] A support mechanism, wherein the support mechanism is arranged at the top of the base, the swing mechanism comprises a support seat, a clamping mechanism is arranged at the top of the support seat, a first rotating shaft is fixedly connected to the bottom end of the support seat, the first rotating shaft is rotatably connected to the top of the base, and a swing mechanism is arranged inside the base;

[0008] The suction mechanism is arranged at the top of the base.

[0009] Preferably, the swing mechanism includes a turntable, a movable cavity is opened inside the base, the turntable is rotatably arranged inside the movable cavity, a connecting plate is arranged above the turntable, the bottom end of the first rotating shaft is fixedly connected to the top end of the connecting plate, a slot is opened at the top end of the connecting plate, a card shaft is fixedly connected to the side of the turntable, the card shaft is inserted into the inner wall of the slot, and a driving mechanism is arranged below the turntable.

[0010] Preferably, the driving mechanism includes a second rotating shaft, which is rotatably connected to the bottom end of the inner wall of the movable cavity, and the top end of the second rotating shaft is fixedly connected to the bottom end of the turntable. A mounting groove is provided at the bottom end of the base, and a first servo motor is installed on the inner wall of the mounting groove, and the output end of the first servo motor is transmission-connected to the bottom end of the second rotating shaft.

[0011] Preferably, the clamping mechanism includes a sliding plate, a sliding groove is symmetrically opened at the top of the support seat, the sliding plate is slidably arranged on the inner wall of the sliding groove, a connecting plate is symmetrically arranged between the two sliding plates, a clamping ring is fixedly connected to the outer wall of the connecting plate, and a rotating mechanism is arranged above the support seat.

[0012] Preferably, the rotating mechanism includes a third rotating shaft, a rotating hole is opened on one side of the sliding plate, the outer wall of the third rotating shaft is rotatably connected to the inner wall of the rotating hole, one end of the third rotating shaft is fixedly connected to the outer wall of the connecting plate, one side of one of the sliding plates is fixedly connected to a mounting plate, a second servo motor is installed on the top of the mounting plate, and the output end of the second servo motor is transmission-connected to the other end of one of the third rotating shafts.

[0013] Preferably, a connecting groove is provided inside the support seat, the interior of the connecting groove is connected with the interior of the sliding groove, the inner wall of the connecting groove is rotatably connected with a bidirectional screw rod, a threaded hole is provided on one side of the sliding plate, the outer wall of the connecting groove is threadedly connected to the inner wall of the threaded hole, one end of the bidirectional screw rod passes through the inner wall of the connecting groove and is fixedly connected with a rotating plate, and a handle is provided on one side of the rotating plate.

[0014] Preferably, the grinding mechanism includes an abrasive, a movable frame is slidably provided on the top of the base, one end of the movable frame is fixedly connected to a mounting block, the abrasive is installed on one side of the mounting block, an electric telescopic rod is installed on the top of the base, and the output end of the electric telescopic rod is transmission-connected to the end of the movable frame.

[0015] Preferably, the suction mechanism includes a fixed cover, which is fixedly connected to the top of the base, and a connecting cavity is provided on the outer wall of the base. The interior of the connecting cavity is connected to the interior of the fixed cover, and the inner wall of the connecting cavity is rotatably connected to a fourth rotating shaft, and the top of the fourth rotating shaft is fixedly connected to a fan blade, and a connecting mechanism is arranged between the fourth rotating shaft and the second rotating shaft.

[0016] Preferably, the connecting mechanism includes a connecting chain, a connecting cavity is opened inside the base, a first sprocket is fixedly connected to the outer wall of the fourth rotating shaft and located inside the connecting cavity, a second sprocket is fixedly connected to the outer wall of the second rotating shaft and located inside the connecting cavity, and the connecting chain transmission is arranged between the first sprocket and the second sprocket.

[0017] The present invention also provides a grinding method for spherical castings, comprising the following steps:

[0018] Step 1: Place the spherical casting between the two clamping rings, hold the handle to rotate the rotating plate, the rotation of the rotating plate drives the rotation of the bidirectional screw, and the threads of the outer wall of the bidirectional screw and the inner wall of the threaded hole are engaged, so that the two sliding plates move relative to each other, the movement of the sliding plates drives the movement of the third rotating shaft, and the movement of the third rotating shaft drives the movement of the connecting plate, until the two clamping rings clamp the spherical casting at the same time to complete the fixed clamping of the spherical casting;

[0019] Step 2: The electric telescopic rod drives the moving frame to move, the moving frame drives the mounting block to move, the mounting block drives the abrasive to move, until the abrasive fits the outer wall of the spherical casting, and then the second servo motor drives the corresponding third rotating shaft to rotate, the rotation of the third rotating shaft drives the connecting plate to rotate, the rotation of the connecting plate drives the clamping ring to rotate, and the clamped spherical casting can be driven to rotate and contact the abrasive to perform grinding work;

[0020] Step 3: The first servo motor drives the second rotating shaft to rotate, the second rotating shaft drives the turntable to rotate, the turntable drives the clamping shaft to revolve, and then the clamping slot can swing around the position of the first rotating shaft through the limit guide of the clamping slot and the clamping shaft, so that the first rotating shaft can swing back and forth, thereby driving the support seat to swing back and forth, so that the spherical casting can be rotated and polished and swing horizontally at the same time;

[0021] Step 4: The second shaft rotates, driving the second sprocket to rotate. Then, under the connection of the connecting chain, the first sprocket rotates, which can drive the fourth shaft to rotate, thereby rotating the fan blades, and rotating the fourth shaft, thereby generating suction inside the fixed cover to collect the debris generated by the grinding of the spherical casting.

[0022] Technical effects and advantages of the present invention:

[0023] (1) The present invention utilizes the setting of the support mechanism and the cooperation of the swing mechanism to enable the first rotating shaft to drive the support seat to swing back and forth, so that the spherical casting can be clamped and rotated by the clamping mechanism for grinding, and the grinding area can be increased by swinging, thereby improving the grinding efficiency of the spherical casting.

[0024] (2) The present invention utilizes the setting of the suction mechanism. When the second shaft rotates, the second sprocket is driven to rotate. Then, under the connection of the connecting chain, the first sprocket is driven to rotate, which can drive the fourth shaft to rotate, thereby causing the fan blades to rotate, and the fourth shaft to rotate, thereby generating suction inside the fixed cover to collect debris generated by the grinding of the spherical casting. A detachable filter is provided inside the fixed cover. When negative pressure is generated inside the fixed cover to suck the waste chips into the fixed cover, the waste chips are blocked by the filter and accumulate on the top of the filter. After the grinding work is completed, the waste chips accumulated on the top of the filter can be collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the side sectional structure of the present invention.

[0026] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention.

[0027] Figure 3 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point A.

[0028] Figure 4 It is a schematic diagram of the top structure of the connecting plate of the present invention.

[0029] Figure 5 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point B.

[0030] In the figure: 101, base; 201, support seat; 202, first rotating shaft; 203, rotating disk; 204, clamping shaft; 205, clamping groove; 206, connecting plate; 207, mounting groove; 208, first servo motor; 209, second rotating shaft; 210, movable cavity; 301, sliding groove; 302, sliding plate; 303, rotating hole; 304, third rotating shaft; 305, connecting disk; 306, clamping ring; 307, mounting plate; 30 8. Second servo motor; 309. Connecting groove; 310. Bidirectional screw rod; 311. Turn plate; 312. Handle; 313. Threaded hole; 401. Moving frame; 402. Mounting block; 403. Abrasive; 404. Electric telescopic rod; 501. Fixed cover; 502. Connecting cavity; 503. Fourth rotating shaft; 504. Fan blade; 505. Connecting cavity; 506. First sprocket; 507. Second sprocket; 508. Connecting chain. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0032] The present invention provides Figure 1-Figure 5 A grinding device for spherical castings shown in the figure comprises a base 101, a supporting mechanism and a suction mechanism, a grinding mechanism is arranged at the top of the base 101, the grinding mechanism comprises an abrasive 403, a moving frame 401 is slidably arranged at the top of the base 101, one end of the moving frame 401 is fixedly connected with a mounting block 402, the abrasive 403 is mounted on one side of the mounting block 402, an electric telescopic rod 404 is installed at the top of the base 101, the output end of the electric telescopic rod 404 is transmission-connected with the end of the moving frame 401, the electric telescopic rod 404 can drive the moving frame 401 to move when it is working, the movement of the moving frame 401 can drive the mounting block 402 to move, the movement of the mounting block 402 can drive the abrasive 403 to move, thereby adjusting the working state of the abrasive 403, improving the convenience of the grinding mechanism, wherein the abrasive 403 and the mounting block 402 are detachably connected, so as to facilitate the replacement of the abrasive 403;

[0033] In a preferred embodiment, the supporting mechanism is arranged at the top of the base 101, and the swinging mechanism includes a supporting seat 201. A clamping mechanism is arranged at the top of the supporting seat 201. The bottom end of the supporting seat 201 is fixedly connected with a first rotating shaft 202. The first rotating shaft 202 is rotatably connected to the top of the base 101. A swinging mechanism is arranged inside the base 101. Through the cooperation of the swinging mechanism, the first rotating shaft 202 can drive the supporting seat 201 to swing back and forth, so that the spherical casting can be clamped and rotated by the clamping mechanism for grinding, and the grinding area can be increased by swinging, thereby improving the grinding efficiency of the spherical casting.

[0034] The swing mechanism includes a turntable 203, an active cavity 210 is provided inside the base 101, the turntable 203 is rotatably arranged inside the active cavity 210, a connecting plate 206 is provided above the turntable 203, the bottom end of the first rotating shaft 202 is fixedly connected to the top of the connecting plate 206, a slot 205 is provided at the top of the connecting plate 206, a side of the turntable 203 is fixedly connected to a card shaft 204, the card shaft 204 is inserted into the inner wall of the slot 205, and the bottom of the turntable 203 is fixedly connected to the card shaft 204. A driving mechanism is provided. Since the position of the first rotating shaft 202 is fixed and the clamping shaft 204 is located on the side of the top of the turntable 203, the turntable 203 can be rotated through the limiting of the clamping groove 205 and the clamping shaft 204 to drive the connecting plate 206 to swing around the position of the first rotating shaft 202, which can drive the support seat 201 to swing back and forth, so that the clamped ball can gradually swing back and forth, thereby increasing the contact area between the spherical casting and the abrasive 403.

[0035] Among them, the driving mechanism includes a second rotating shaft 209, which is rotatably connected to the bottom end of the inner wall of the active cavity 210, and the top of the second rotating shaft 209 is fixedly connected to the bottom end of the turntable 203. A mounting groove 207 is opened at the bottom end of the base 101, and a first servo motor 208 is installed on the inner wall of the mounting groove 207. The output end of the first servo motor 208 is transmission-connected to the bottom end of the second rotating shaft 209. By energizing the first servo motor 208, the second rotating shaft 209 can be driven to rotate, and the rotation of the second rotating shaft 209 can drive the turntable 203 to rotate, thereby improving the convenience and stability of the operation of the swing mechanism.

[0036] The clamping mechanism includes a sliding plate 302, a sliding groove 301 is symmetrically provided at the top of the support seat 201, the sliding plate 302 is slidably arranged on the inner wall of the sliding groove 301, a connecting plate 305 is symmetrically provided between the two sliding plates 302, and a clamping ring 306 is fixedly connected to the outer wall of the connecting plate 305, a rotating mechanism is provided above the support seat 201, a connecting groove 309 is provided inside the support seat 201, the interior of the connecting groove 309 is connected to the interior of the sliding groove 301, and a bidirectional screw rod 310 is rotatably connected to the inner wall of the connecting groove 309, a threaded hole 313 is provided on one side of the sliding plate 302, and the outer wall of the connecting groove 309 is connected to the threaded hole 313. The inner wall of the hole 313 is threadedly connected, one end of the bidirectional screw rod 310 passes through the inner wall of the connecting groove 309 and is fixedly connected to a rotating plate 311, and a handle 312 is provided on one side of the rotating plate 311. The handle 312 is held to rotate the rotating plate 311, and the rotation of the rotating plate 311 drives the bidirectional screw rod 310 to rotate. Under the threaded engagement between the outer wall of the bidirectional screw rod 310 and the inner wall of the threaded hole 313, the two sliding plates 302 move relative to each other, and the movement of the sliding plate 302 drives the third rotating shaft 304 to move, and the movement of the third rotating shaft 304 drives the connecting plate 305 to move until the two retaining rings 306 clamp the spherical casting at the same time to complete the fixed clamping of the spherical casting.

[0037] The rotating mechanism includes a third rotating shaft 304, a rotating hole 303 is opened on one side of the sliding plate 302, the outer wall of the third rotating shaft 304 is rotatably connected to the inner wall of the rotating hole 303, one end of the third rotating shaft 304 is fixedly connected to the outer wall of the connecting plate 305, one side of one of the sliding plates 302 is fixedly connected to a mounting plate 307, a second servo motor 308 is installed on the top of the mounting plate 307, the output end of the second servo motor 308 is transmission-connected to the other end of one of the third rotating shafts 304, and the second servo motor 308 is used to drive the second servo motor 308. The spherical casting fixedly clamped by the clamping ring 306 can be driven to rotate under the connection of the third rotating shaft 304, and then the abrasive 403 in contact with the spherical casting cooperates to grind the spherical casting. The second servo motor 308, the first servo motor 208 and the electric telescopic rod 404 are electrically connected to the external power supply through the external switch, which is convenient for the operator to control the second servo motor 308, the first servo motor 208 and the electric telescopic rod 404, thereby improving the safety and convenience of operation.

[0038] Among them, the suction mechanism is arranged at the top of the base 101, the suction mechanism includes a fixed cover 501, the fixed cover 501 is fixedly connected to the top of the base 101, the outer wall of the base 101 is provided with a connecting cavity 502, the interior of the connecting cavity 502 is connected to the interior of the fixed cover 501, the inner wall of the connecting cavity 502 is rotatably connected with a fourth rotating shaft 503, the top of the fourth rotating shaft 503 is fixedly connected with a fan blade 504, a connecting mechanism is arranged between the fourth rotating shaft 503 and the second rotating shaft 209, the connecting mechanism includes a connecting chain 508, a connecting cavity 505 is opened inside the base 101, the outer wall of the fourth rotating shaft 503 and the interior of the connecting cavity 505 are fixedly sleeved with a first sprocket 506, the outer wall of the second rotating shaft 209 and the interior of the connecting cavity 505 are fixedly sleeved with a first sprocket The second sprocket 507 and the connecting chain 508 are arranged between the first sprocket 506 and the second sprocket 507. When the second rotating shaft 209 rotates, the second sprocket 507 is driven to rotate. Then, under the connection of the connecting chain 508, the first sprocket 506 is rotated, which can drive the fourth rotating shaft 503 to rotate, thereby rotating the fan blades 504, and then rotating the fourth rotating shaft 503, so that suction is generated inside the fixed cover 501 to collect the debris generated by the grinding of the spherical casting. A detachable filter is arranged inside the fixed cover 501. When negative pressure is generated inside the fixed cover 501 to suck the waste into the fixed cover 501, it is blocked by the filter and accumulates on the top of the filter. After the grinding work is completed, the waste accumulated on the top of the filter can be collected.

[0039] The present invention also provides a grinding method for spherical castings, comprising the following steps:

[0040] Step 1: Place the spherical casting between the two clamping rings 306, hold the handle 312 to rotate the rotating plate 311, the rotating plate 311 rotates to drive the bidirectional screw 310 to rotate, and the two sliding plates 302 move relative to each other under the threaded engagement between the outer wall of the bidirectional screw 310 and the inner wall of the threaded hole 313, the movement of the sliding plate 302 drives the third rotating shaft 304 to move, and the movement of the third rotating shaft 304 drives the connecting plate 305 to move, until the two clamping rings 306 clamp the spherical casting at the same time to complete the fixed clamping of the spherical casting;

[0041] Step 2: The electric telescopic rod 404 drives the moving frame 401 to move, the moving frame 401 drives the mounting block 402 to move, the mounting block 402 drives the abrasive 403 to move, until the abrasive 403 fits the outer wall of the spherical casting, then the second servo motor 308 drives the corresponding third rotating shaft 304 to rotate, the rotation of the third rotating shaft 304 drives the connecting plate 305 to rotate, the rotation of the connecting plate 305 drives the clamping ring 306 to rotate, and the clamped spherical casting can be driven to rotate and contact the abrasive 403 to perform grinding work;

[0042] Step 3: The first servo motor 208 drives the second rotating shaft 209 to rotate, the second rotating shaft 209 drives the turntable 203 to rotate, the turntable 203 drives the clamping shaft 204 to revolve, and then through the limit guide of the clamping slot 205 and the clamping shaft 204, the clamping slot 205 can swing around the position of the first rotating shaft 202, so that the first rotating shaft 202 can swing back and forth, thereby driving the support seat 201 to swing back and forth, so that the spherical casting can swing horizontally while rotating and grinding;

[0043] Step 4: The second shaft 209 rotates while driving the second sprocket 507 to rotate. Then, under the connection of the connecting chain 508, the first sprocket 506 is rotated, which can drive the fourth shaft 503 to rotate, thereby rotating the fan blades 504, and rotating the fourth shaft 503, thereby generating suction inside the fixed cover 501 to collect the debris generated by the grinding of the spherical casting.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grinding device for spherical castings, characterized in that: include: A base (101), wherein a polishing mechanism is disposed on the top of the base (101); A support mechanism, the support mechanism is arranged at the top of the base (101), the support mechanism comprises a support seat (201), a clamping mechanism is arranged at the top of the support seat (201), a first rotating shaft (202) is fixedly connected to the bottom of the support seat (201), the first rotating shaft (202) is rotatably connected to the top of the base (101), and a swing mechanism is arranged inside the base (101); A suction mechanism is arranged at the top of the base (101).

2. A grinding device for spherical castings according to claim 1, characterized in that: The swing mechanism comprises a turntable (203), an active cavity (210) is provided inside the base (101), the turntable (203) is rotatably arranged inside the active cavity (210), a connecting plate (206) is arranged above the turntable (203), the bottom end of the first rotating shaft (202) is fixedly connected to the top end of the connecting plate (206), a clamping groove (205) is provided at the top end of the connecting plate (206), a side of the turntable (203) is fixedly connected to a clamping shaft (204), the clamping shaft (204) is inserted into the inner wall of the clamping groove (205), and a driving mechanism is arranged below the turntable (203).

3. A grinding device for spherical castings according to claim 2, characterized in that: The driving mechanism comprises a second rotating shaft (209), the second rotating shaft (209) is rotatably connected to the bottom end of the inner wall of the movable cavity (210), the top end of the second rotating shaft (209) is fixedly connected to the bottom end of the turntable (203), the bottom end of the base (101) is provided with a mounting groove (207), the inner wall of the mounting groove (207) is installed with a first servo motor (208), and the output end of the first servo motor (208) is transmission-connected to the bottom end of the second rotating shaft (209).

4. A grinding device for spherical castings according to claim 1, characterized in that: The clamping mechanism comprises a sliding plate (302), a sliding groove (301) is symmetrically provided at the top of the support seat (201), the sliding plate (302) is slidably arranged on the inner wall of the sliding groove (301), a connecting plate (305) is symmetrically arranged between the two sliding plates (302), a clamping ring (306) is fixedly connected to the outer wall of the connecting plate (305), and a rotating mechanism is arranged above the support seat (201).

5. A grinding device for spherical castings according to claim 4, characterized in that: The rotating mechanism comprises a third rotating shaft (304), a rotating hole (303) is opened on one side of the sliding plate (302), the outer wall of the third rotating shaft (304) is rotatably connected to the inner wall of the rotating hole (303), one end of the third rotating shaft (304) is fixedly connected to the outer wall of the connecting plate (305), one side of one of the sliding plates (302) is fixedly connected to a mounting plate (307), a second servo motor (308) is installed on the top of the mounting plate (307), and the output end of the second servo motor (308) is drivingly connected to the other end of one of the third rotating shafts (304).

6. A grinding device for spherical castings according to claim 4, characterized in that: The support seat (201) is provided with a connecting groove (309) inside, the inside of the connecting groove (309) is connected with the inside of the slide groove (301), the inner wall of the connecting groove (309) is rotatably connected with a bidirectional screw rod (310), one side of the sliding plate (302) is provided with a threaded hole (313), the outer wall of the connecting groove (309) is threadedly connected with the inner wall of the threaded hole (313), one end of the bidirectional screw rod (310) passes through the inner wall of the connecting groove (309) and is fixedly connected with a rotating plate (311), and a handle (312) is provided on one side of the rotating plate (311).

7. A grinding device for spherical castings according to claim 1, characterized in that: The grinding mechanism comprises an abrasive (403); a movable frame (401) is slidably arranged at the top of the base (101); one end of the movable frame (401) is fixedly connected to a mounting block (402); the abrasive (403) is mounted on one side of the mounting block (402); an electric telescopic rod (404) is mounted at the top of the base (101); and the output end of the electric telescopic rod (404) is transmission-connected to the end of the movable frame (401).

8. A grinding device for spherical castings according to claim 3, characterized in that: The suction mechanism comprises a fixed cover (501), wherein the fixed cover (501) is fixedly connected to the top of the base (101), and a connecting cavity (502) is provided on the outer wall of the base (101), wherein the interior of the connecting cavity (502) is connected to the interior of the fixed cover (501), and the inner wall of the connecting cavity (502) is rotatably connected to a fourth rotating shaft (503), and the top of the fourth rotating shaft (503) is fixedly connected to a fan blade (504), and a connecting mechanism is provided between the fourth rotating shaft (503) and the second rotating shaft (209).

9. A grinding device for spherical castings according to claim 8, characterized in that: The connecting mechanism comprises a connecting chain (508), a connecting cavity (505) is provided inside the base (101), a first sprocket (506) is fixedly sleeved on the outer wall of the fourth rotating shaft (503) and located inside the connecting cavity (505), a second sprocket (507) is fixedly sleeved on the outer wall of the second rotating shaft (209) and located inside the connecting cavity (505), and the connecting chain (508) is transmission-arranged between the first sprocket (506) and the second sprocket (507).

10. A method for grinding a spherical casting according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the spherical casting between the two clamping rings (306), hold the handle (312) to rotate the rotating plate (311), the rotating plate (311) drives the bidirectional screw (310) to rotate, under the threaded engagement between the outer wall of the bidirectional screw (310) and the inner wall of the threaded hole (313), the two sliding plates (302) move relative to each other, the movement of the sliding plates (302) drives the movement of the third rotating shaft (304), the movement of the third rotating shaft (304) drives the movement of the connecting plate (305), until the two clamping rings (306) clamp the spherical casting at the same time to complete the fixed clamping of the spherical casting; Step 2: The electric telescopic rod (404) drives the moving frame (401) to move, the moving frame (401) drives the mounting block (402) to move, the mounting block (402) drives the abrasive (403) to move, until the abrasive (403) fits the outer wall of the spherical casting, then the second servo motor (308) drives the corresponding third rotating shaft (304) to rotate, the third rotating shaft (304) drives the connecting plate (305) to rotate, the connecting plate (305) drives the clamping ring (306) to rotate, and the clamped spherical casting can be driven to rotate and contact with the abrasive (403) to perform grinding work; Step 3: The first servo motor (208) drives the second rotating shaft (209) to rotate, the second rotating shaft (209) drives the rotating disk (203) to rotate, the rotating disk (203) drives the clamping shaft (204) to revolve, and then through the limit guide of the clamping slot (205) and the clamping shaft (204), the clamping slot (205) can swing around the position of the first rotating shaft (202), so that the first rotating shaft (202) swings back and forth, thereby driving the support seat (201) to swing back and forth, so that the spherical casting can be rotated and polished and then swing horizontally; Step 4: The second rotating shaft (209) rotates while driving the second sprocket (507) to rotate. Then, under the connection of the connecting chain (508), the first sprocket (506) rotates, which can drive the fourth rotating shaft (503) to rotate, thereby causing the fan blades (504) to rotate, and the fourth rotating shaft (503) to rotate, thereby generating suction inside the fixed cover (501) to collect the debris generated by the grinding of the spherical casting.

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