A polishing device for subway motor cast aluminum end cover

Abstract

The present application relates to the technical field of polishing subway motor cast aluminum end cover, especially to a polishing device for subway motor cast aluminum end cover, comprising a polisher, a positionable dustproof structure is connected to the end face of the polisher, a positioning assembly is arranged in the positionable dustproof structure, an adjustable assembly is connected to the positioning assembly, a retractable dustproof assembly is connected to the adjustable assembly, a dust collector is connected to the side wall of the polisher, and a controller is connected to the end face of the polisher, the positionable dustproof structure is arranged in the polishing device for subway motor cast aluminum end cover, the positioning assembly, the adjustable assembly and the retractable dustproof assembly in the positionable dustproof structure interact with each other to clamp and dustproof the subway motor cast aluminum end cover of different sizes, so that the device is more convenient and more environmentally friendly when used.

Description

Technical Field

[0001] This invention relates to the field of grinding technology for cast aluminum end caps of subway motors, specifically to a grinding device for cast aluminum end caps of subway motors. Background Technology

[0002] Before being put into use, the surface of the cast aluminum end caps for subway motors needs to be ground. Existing grinding equipment requires manual fixing of the end caps onto the grinding machine's worktable, which is inconvenient and affects grinding efficiency. Furthermore, when the dimensions of the end caps are inconsistent, the fixture dimensions must be adjusted for proper clamping, making the process cumbersome. Additionally, grinding generates a large amount of dust, polluting the surrounding environment. To address these issues, a dedicated grinding device for cast aluminum end caps for subway motors is needed. Summary of the Invention

[0003] The purpose of this invention is to provide a grinding device for cast aluminum end caps of subway motors to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A grinding device for cast aluminum end caps of subway motors includes a grinding machine, a positionable dustproof structure connected to the end face of the grinding machine, a positioning component provided in the positionable dustproof structure, an adjustable component connected to the positioning component, a retractable dustproof component connected to the adjustable component, a vacuum cleaner connected to the side wall of the grinding machine, and a controller connected to the end face of the grinding machine.

[0005] The positioning assembly includes a connecting housing connected to the worktable of the grinding machine. A rotary motor is connected to the inner cavity of the connecting housing via a connecting seat. The drive end of the rotary motor is connected to a drive rod via a coupling. A driven helical gear is meshed with a drive helical gear on the side wall of the drive rod. A rotating shaft is connected to the center of the driven helical gear. A rotating connecting rod is connected to the side wall of the rotating shaft. Connecting connecting rods are connected to both ends of the rotating connecting rod. A movable connecting plate is connected to the movable connecting plate, and a connecting slide plate is connected to the connecting slide plate. A connecting slide rail is connected to the bottom of the inner cavity of the connecting box. Limiting sliders are connected to both sides of the moving connecting plate and the connecting slide plate. Limiting slide rails are connected to the limiting sliders and the limiting slide rails are connected to the bottom of the inner cavity of the connecting box. A connecting slide rod is connected to the connecting slide plate. Connecting slide sleeves are symmetrically connected to the side walls of the connecting slide rods. A connecting slide plate is connected to the bottom of the connecting slide sleeves. An inclined slider is connected to the bottom of the connecting slide plate. An inclined slide rail is connected to the inclined slider and the inclined slide rails are connected to the end face of the connecting box. A clamping plate is connected to one end of the connecting slide plate. The vacuum cleaner is connected to the controller via a wire, and the connection is electrical.

[0006] The adjustable component includes a connecting sleeve, one end of which is connected to the side wall of a connecting slide plate. A telescopic slide plate is connected to the inner cavity of the connecting sleeve. A limiting rack is connected to the end face of the telescopic slide plate. A connecting plate is connected to the end face of the connecting sleeve. Connecting brackets are symmetrically connected to the end face of the connecting plate. An eccentric rotating plate is connected to the connecting bracket. A lever is connected to the side wall of the eccentric rotating plate. A connecting shaft is connected to the eccentric rotating plate. A movable shaft is connected to the side wall of the connecting shaft. A movable rack is provided at one end of the movable shaft, corresponding to the limiting rack.

[0007] The retractable dustproof assembly includes two sets of connecting slide rails, which are symmetrically connected to the end face of the connecting housing. Multiple sets of connecting sliders are connected to the connecting slide rails. A movable bracket is connected to the end face of the connecting slider. A scissor-type telescopic frame is connected to the side wall of the movable bracket. A dustproof canvas is connected to the movable bracket. The side wall of the dustproof canvas is connected to a vacuum cleaner through a conduit. A connecting crossbar is connected to the movable bracket. The connecting crossbar is connected to the telescopic sliding plate.

[0008] In a preferred embodiment of the present invention, the rotating motor is connected to the controller via a wire and the connection is electrical. The drive rod is connected to the bottom of the inner cavity of the connecting box via a bearing seat, wherein the connection between the drive rod and the bearing seat is a rotatable connection.

[0009] The above technical solution enables the controller to control the operation of the rotating motor; In a preferred embodiment of the present invention, the rotating shaft is connected to the bottom of the inner cavity of the connecting box via a bearing seat, wherein the rotating shaft and the bearing seat are connected by a rotating connection, the rotating connecting rod and the connecting rod are rotatably connected via a rotating shaft, and the connecting rod and the movable connecting plate are rotatably connected via a rotating shaft.

[0010] As a preferred embodiment of the present invention, a groove is provided on the connecting slide rail and corresponding to the connecting slide plate, wherein the connecting slide plate and the groove are connected in a sliding connection manner. A groove is provided on the limiting slide rail and corresponding to the limiting slider, wherein the limiting slider and the groove are connected in a sliding connection manner.

[0011] As a preferred embodiment of the present invention, the connecting sleeve is provided with a connecting hole corresponding to the connecting slide rod, wherein the connecting slide rod and the connecting hole are connected in a sliding manner. The inclined slider is provided with a slide groove corresponding to the inclined slide rail, wherein the inclined slide rail and the slide groove are connected in a sliding manner. Multiple sets of inclined slide rails are provided, wherein the included angle between two adjacent sets of inclined slide rails is 90 degrees.

[0012] Through the above technical solution, when the drive rod rotates, it can drive the clamping plate to move towards the center; As a preferred embodiment of the present invention, the connecting sleeve has a connecting groove corresponding to the telescopic sliding plate, wherein the telescopic sliding plate and the connecting groove are connected by a sliding connection; the eccentric rotating plate has a sliding groove corresponding to the connecting bracket, wherein the connecting bracket and the sliding groove are connected by a sliding connection; the connecting shaft and the moving shaft are connected by a rotational connection; and the connecting sleeve has a limiting groove corresponding to the moving rack, wherein the moving rack and the limiting groove are connected by a sliding connection.

[0013] The above technical solution allows for quick adjustment of the distance between the connecting sleeve and the telescopic slide plate.

[0014] As a preferred embodiment of the present invention, the connecting slider is provided with a groove corresponding to the connecting slide rail, wherein the connecting slide rail and the groove are connected by a sliding connection, and multiple sets of connecting sliders are provided, wherein the connecting sliders at both ends are fixedly connected to the connecting slide rail, and the connecting crossbar is connected to the second set of movable brackets.

[0015] The above technical solution enables the dustproof canvas to be shrunk.

[0016] Compared with the prior art, the beneficial effects of the present invention are: In this invention, by incorporating a positioning component into the grinding device for cast aluminum end caps of subway motors, the rotating motor within the positioning component, through a transmission structure, can clamp and position cast aluminum end caps of subway motors of different sizes, making the device more convenient to use. In this invention, by setting a retractable dustproof component in the grinding device for cast aluminum end caps of subway motors, the dustproof canvas can be opened when the cast aluminum end caps of subway motors are clamped and positioned using the scissor-type telescopic frame in the retractable dustproof component, which can effectively prevent dust from being stirred up and protect the surrounding environment.

[0017] In this invention, by setting a positionable dustproof structure in the grinding device for cast aluminum end caps of subway motors, the interaction between the positioning component, adjustable component and retractable dustproof component in the positionable dustproof structure can clamp and prevent dust from cast aluminum end caps of subway motors of different sizes, making the device more convenient and more environmentally friendly to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the isolateral structure of the present invention; Figure 2 This is a schematic diagram of the positioning dustproof structure of the present invention; Figure 3 This is a schematic diagram of the positioning component of the present invention; Figure 4 for Figure 3 Internal structure diagram; Figure 5 for Figure 4 Partial structural diagram; Figure 6 This is a schematic diagram of the adjustable component of the present invention; Figure 7 for Figure 6 Partial structural diagram; Figure 8 This is a schematic diagram of the retractable dustproof component of the present invention; Figure 9 for Figure 8 A partial structural diagram.

[0019] In the diagram: 1. Grinding machine; 2. Positionable dustproof structure; 3. Positioning component; 4. Adjustable component; 5. Retractable dustproof component; 6. Vacuum cleaner; 7. Controller; 301. Connecting housing; 302. Rotating motor; 303. Drive rod; 304. Drive helical gear; 305. Driven helical gear; 306. Rotating shaft; 307. Rotating connecting rod; 308. Connecting connecting rod; 309. Moving connecting plate; 310. Connecting slide plate; 311. Connecting slide rail; 312. Limiting slider; 313. Limiting slide rail; 314. Connecting slide rod; 315. 316. Connecting slide sleeve; 317. Connecting slide plate; 318. Angled slider; 319. Angled slide rail; 310. Clamping plate; 401. Connecting sleeve; 402. Telescopic slide plate; 403. Limiting rack; 404. Connecting connecting plate; 405. Connecting bracket; 406. Eccentric rotating plate; 407. Actuating rotating rod; 408. Connecting shaft; 409. Moving shaft; 410. Moving rack; 501. Connecting slide rail; 502. Connecting slider; 503. Moving bracket; 504. Scissor-type telescopic frame; 505. Dustproof canvas; 506. Connecting crossbar. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] To facilitate understanding of the present invention, a more comprehensive description of the invention will be given below with reference to the accompanying drawings, and several embodiments of the invention will be provided. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be more thorough and complete.

[0022] For examples, please refer to Figures 1-9 The present invention provides a technical solution: A grinding device for cast aluminum end caps of subway motors includes a grinding machine 1, a positioning dustproof structure 2 connected to the end face of the grinding machine 1, a positioning component 3 provided in the positioning dustproof structure 2, an adjustable component 4 connected to the positioning component 3, a retractable dustproof component 5 connected to the adjustable component 4, a vacuum cleaner 6 connected to the side wall of the grinding machine 1, and a controller 7 connected to the end face of the grinding machine 1.

[0023] In this embodiment, the positioning component 3 includes a connecting housing 301, which is connected to the worktable of the grinding machine 1. A rotary motor 302 is connected to the inner cavity of the connecting housing 301 via a connecting seat. The drive end of the rotary motor 302 is connected to a drive rod 303 via a coupling. A driven helical gear 305 is meshed with a drive helical gear 304 on the side wall of the drive rod 303. A rotating shaft 306 is connected to the center of the driven helical gear 305. A rotating connecting rod 307 is connected to the side wall of the rotating shaft 306. Connecting connecting rods 308 are connected to both ends of the rotating connecting rod 307. A movable connecting plate 309 is connected to the other end of the connecting connecting rod 308. A connecting slide plate 310 is connected to the movable connecting plate 309. A connecting slide plate 310 is connected to the connecting slide plate 310. Rail 311, connecting slide rail 311 is connected to the bottom of the inner cavity of connecting box 301. Moving connecting plate 309 and connected to both sides of connecting slide plate 310 are limit sliders 312. Limit sliders 312 are connected to limit slide rails 313. Limit slide rails 313 are connected to the bottom of the inner cavity of connecting box 301. Connecting slide plate 310 is connected to connecting slide rod 314. Connecting slide sleeves 315 are symmetrically connected to the side wall of connecting slide rod 314. Connecting slide plate 316 is connected to the bottom of connecting slide sleeve 315. Angled slider 317 is connected to the bottom of connecting slide plate 316. Angled slide rail 318 is connected to Angled slider 317. Angled slide rail 318 is connected to the end face of connecting box 301. Clamping plate 319 is connected to one end of connecting slide plate 316. The vacuum cleaner 6 is connected to the controller 7 via a wire in an electrical connection manner, and the rotary motor 302 is also connected to the controller 7 via a wire in an electrical connection manner, so that the operation of the vacuum cleaner 6 and the rotary motor 302 can be controlled by the controller 7. The drive rod 303 is connected to the bottom of the inner cavity of the connecting housing 301 via a bearing seat, and the connection between the drive rod 303 and the bearing seat is a rotatable connection. The rotating shaft 306 is also connected to the bottom of the inner cavity of the connecting housing 301 via a bearing seat, and the connection between the rotating shaft 306 and the bearing seat is a rotatable connection. The rotating connecting rod 307 and the connecting connecting rod 308 are rotatably connected via a rotating shaft. The connecting connecting rod 308 and the moving connecting plate 309 are rotatably connected via a rotating shaft. A groove is provided on the connecting slide rail 311 corresponding to the connecting slide plate 310, and the connection between the connecting slide plate 310 and the groove is a sliding connection. The slide rail 313 has a groove corresponding to the limiting slider 312, and the limiting slider 312 is slidably connected to the groove. The connecting sleeve 315 has a connecting hole corresponding to the connecting rod 314, and the connecting rod 314 is slidably connected to the connecting hole. The inclined slider 317 has a groove corresponding to the inclined slide rail 318, and the inclined slide rail 318 is slidably connected to the groove. Multiple sets of inclined slide rails 318 are provided, and the included angle between two adjacent sets of inclined slide rails 318 is 90 degrees. When the drive rod 303 rotates, it can drive the clamping plate 319 to move towards the center. In this embodiment, the adjustable component 4 includes a connecting sleeve 401, one end of which is connected to the side wall of the connecting slide plate 310. A telescopic slide plate 402 is connected to the inner cavity of the connecting sleeve 401. A limiting rack 403 is connected to the end face of the telescopic slide plate 402. A connecting plate 404 is connected to the end face of the connecting sleeve 401. A connecting bracket 405 is symmetrically connected to the end face of the connecting plate 404. An eccentric rotating plate 406 is connected to the connecting bracket 405. A lever 407 is connected to the side wall of the eccentric rotating plate 406. A connecting shaft 408 is connected to the eccentric rotating plate 406. A movable shaft 409 is connected to the side wall of the connecting shaft 408. A movable rack 410 is provided at one end of the movable shaft 409 and corresponding to the limiting rack 403. The connecting sleeve 401 has a connecting groove corresponding to the telescopic slide plate 402, and the telescopic slide plate 402 is slidably connected to the connecting groove. The eccentric rotating plate 406 has a sliding groove corresponding to the connecting bracket 405, and the connecting bracket 405 is slidably connected to the sliding groove. The connecting shaft 408 and the moving shaft 409 are rotatably connected. The connecting sleeve 401 has a limit groove corresponding to the moving rack 410, and the moving rack 410 is slidably connected to the limit groove. This allows for adjustment of the distance between the connecting sleeve 401 and the telescopic slide plate 402 and quick fixation. In this embodiment, the retractable dustproof component 5 includes two sets of connecting slide rails 501, which are symmetrically connected to the end face of the connecting housing 301. Multiple sets of connecting sliders 502 are connected to the connecting slide rails 501. A movable bracket 503 is connected to the end face of the connecting slider 502. A scissor-type telescopic bracket 504 is connected to the side wall of the movable bracket 503. A dustproof canvas 505 is connected to the movable bracket 503. The side wall of the dustproof canvas 505 is connected to the vacuum cleaner 6 through a conduit. A connecting crossbar 506 is connected to the movable bracket 503. The connecting crossbar 506 is connected to the telescopic sliding plate 402.

[0024] The connecting slider 502 has a groove corresponding to the connecting slide rail 501. The connecting slide rail 501 and the groove are connected by a sliding connection. Multiple sets of connecting sliders 502 are provided. The connecting sliders 502 at both ends are fixedly connected to the connecting slide rail 501. The connecting crossbar 506 is connected to the second set of movable brackets 503. When the connecting crossbar 506 moves, it can drive the dustproof canvas 505 to retract.

[0025] The working process of this invention is as follows: When using the grinding device for cast aluminum end caps of subway motors, firstly, the device is connected to the power supply to put it into working condition. Then, according to the size of the cast aluminum end cap of the subway motor, the distance between the connecting sleeve 401 and the telescopic slide plate 402 is manually adjusted. The lever 407 is manually turned. When the lever 407 rotates, it drives the eccentric rotating plate 406 to rotate. When the eccentric rotating plate 406 rotates, it drives the moving rack 410 to move downward through the connecting shaft 408 and the moving shaft 409, so that the limiting rack 403 and the moving rack 410 mesh with each other, thereby completing the fixing between the connecting sleeve 401 and the telescopic slide plate 402. Place the cast aluminum end cap of the subway motor on the end face of the connecting box 301. At this time, start the grinder 1 and position the grinding disc of the grinder 1 above the cast aluminum end cap of the subway motor. The controller 7 controls the operation of the rotating motor 302. When the drive end of the rotating motor 302 rotates, it drives the drive rod 303 to rotate. The drive rod 303 drives the drive helical gear 304 to rotate. The drive helical gear 304 drives the driven helical gear 305 to rotate. The driven helical gear 305 drives the rotating shaft 306 to rotate. The rotating shaft 306 drives the rotating connecting rod 307 to rotate. When the rotating connecting rod 307 rotates, it drives the two sets of moving connecting plates 309 to move towards the middle through the connecting connecting rod 308. When the moving connecting plate 309 moves, it drives the connecting sliding plate 316 to move towards the middle through the connecting sliding plate 310, connecting sliding rod 314, and connecting sliding sleeve 315. When the connecting sliding plate 316 moves, under the action of the inclined slider 317 and the inclined sliding rail 318, it drives the clamping plate 319 to converge towards the middle, thereby positioning and clamping the cast aluminum end cover of the subway motor. Meanwhile, when the connecting slide plate 310 moves, the adjustable component 4 and the connecting crossbar 506 drive the moving bracket 503 to move on the connecting slide rail 501. When the moving bracket 503 moves, the dustproof canvas 505 is opened under the action of the scissor-type telescopic frame 504. At this time, the vacuum cleaner 6 is controlled by the controller 7 to perform vacuuming operations.

[0026] The controller 7, vacuum cleaner 6, and rotating motor 302 used in this invention are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the controller 7, vacuum cleaner 6, and rotating motor 302 will not be described in detail here.

[0027] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grinding device for cast aluminum end caps of subway motors, comprising a grinding machine (1), characterized in that: A positioning dustproof structure (2) is connected to the end face of the grinder (1). A positioning component (3) is provided in the positioning dustproof structure (2). An adjustable component (4) is connected to the positioning component (3). A retractable dustproof component (5) is connected to the adjustable component (4). A vacuum cleaner (6) is connected to the side wall of the grinder (1). A controller (7) is connected to the end face of the grinder (1). The adjustable component (4) includes a connecting sleeve (401), a telescopic slide plate (402) is connected to the inner cavity of the connecting sleeve (401), a limiting rack (403) is connected to the end face of the telescopic slide plate (402), a connecting plate (404) is connected to the end face of the connecting sleeve (401), a connecting bracket (405) is symmetrically connected to the end face of the connecting plate (404), an eccentric rotating plate (406) is connected to the connecting bracket (405), a lever (407) is connected to the side wall of the eccentric rotating plate (406), a connecting shaft (408) is connected to the eccentric rotating plate (406), a movable shaft (409) is connected to the side wall of the connecting shaft (408), and a movable rack (410) is provided at one end of the movable shaft (409) and corresponding to the limiting rack (403). The retractable dustproof assembly (5) includes two sets of connecting slide rails (501), and multiple sets of connecting sliders (502) are connected to the connecting slide rails (501). A movable bracket (503) is connected to the end face of the connecting slider (502). A scissor-type telescopic frame (504) is connected to the side wall of the movable bracket (503). A dustproof canvas (505) is connected to the side wall of the dustproof canvas (505) through a conduit. A connecting crossbar (506) is connected to the movable bracket (503). The connecting crossbar (506) is connected to the telescopic sliding plate (402).

2. The grinding device for cast aluminum end caps of subway motors according to claim 1, characterized in that: The positioning component (3) includes a connecting housing (301), which is connected to the worktable of the grinding machine (1). A rotating motor (302) is connected to the inner cavity of the connecting housing (301) via a connecting seat. The driving end of the rotating motor (302) is connected to a driving rod (303) via a coupling. A driven helical gear (305) is meshed with a driving helical gear (304) on the side wall of the driving rod (303). A rotating shaft (306) is connected to the center of the driven helical gear (305). A rotating connecting rod (307) is connected to the side wall of the rotating shaft (306). A connecting connecting rod (308) is connected to both ends of the rotating connecting rod (307). A movable connecting plate (309) is connected to the other end of the connecting connecting rod (308). A connecting slide plate (310) is connected to the movable connecting plate (309). A connecting slide rail (311) is connected to the connecting slide plate (310). The connecting slide rail (311) is connected to the bottom of the inner cavity of the connecting box (301). Limiting sliders (312) are connected to the movable connecting plate (309) and located on both sides of the connecting slide plate (310). Limiting slide rails (313) are connected to the limiting sliders (312). The limiting slide rails (313) are connected to the bottom of the inner cavity of the connecting box (301). A connecting slide rod (314) is connected to the connecting slide plate (310). (314) has symmetrical connecting sleeves (315) on its side wall. The bottom of the connecting sleeves (315) is connected to a connecting slide plate (316). The bottom of the connecting slide plate (316) is connected to an inclined slider (317). An inclined slide rail (318) is connected to the inclined slider (317). The inclined slide rail (318) is connected to the end face of the connecting box (301). One end of the connecting slide plate (316) is connected to a clamping plate (319). The vacuum cleaner (6) is connected to the controller (7) via a wire and the connection is electrical. One end of the connecting sleeve (401) is connected to the side wall of the connecting slide plate (310); The two sets of connecting slide rails (501) are symmetrically connected to the end face of the connecting box (301).

3. The grinding device for cast aluminum end caps of subway motors according to claim 2, characterized in that: The rotating motor (302) is connected to the controller (7) by wires and the connection method is electrical connection. The drive rod (303) is connected to the bottom of the inner cavity of the connecting box (301) by bearing seat, wherein the connection method between the drive rod (303) and the bearing seat is rotational connection.

4. A grinding device for cast aluminum end caps of subway motors according to claim 2, characterized in that: The rotating shaft (306) is connected to the bottom of the inner cavity of the connecting box (301) through a bearing seat. The rotating shaft (306) and the bearing seat are connected by a rotating connection. The rotating connecting rod (307) and the connecting connecting rod (308) are connected by a rotating shaft. The connecting connecting rod (308) and the moving connecting plate (309) are connected by a rotating shaft.

5. A grinding device for cast aluminum end caps of subway motors according to claim 2, characterized in that: The connecting slide rail (311) has a groove corresponding to the connecting slide plate (310), wherein the connecting slide plate (310) and the groove are connected in a sliding connection. The limiting slide rail (313) has a groove corresponding to the limiting slider (312), wherein the limiting slider (312) and the groove are connected in a sliding connection.

6. A grinding device for cast aluminum end caps of subway motors according to claim 2, characterized in that: The connecting sleeve (315) has a connecting hole corresponding to the connecting rod (314), wherein the connecting rod (314) and the connecting hole are connected in a sliding manner. The inclined slider (317) has a groove corresponding to the inclined slide rail (318), wherein the inclined slide rail (318) and the groove are connected in a sliding manner. The inclined slide rail (318) is provided in multiple sets, wherein the included angle between two adjacent sets of inclined slide rails (318) is 90 degrees.

7. A grinding device for cast aluminum end caps of subway motors according to claim 1, characterized in that: The connecting sleeve (401) has a connecting groove corresponding to the telescopic sliding plate (402), wherein the telescopic sliding plate (402) and the connecting groove are connected in a sliding manner. The eccentric rotating plate (406) has a sliding groove corresponding to the connecting bracket (405), wherein the connecting bracket (405) and the sliding groove are connected in a sliding manner. The connecting shaft (408) and the moving shaft (409) are connected in a rotating manner. The connecting sleeve (401) has a limiting groove corresponding to the moving rack (410), wherein the moving rack (410) and the limiting groove are connected in a sliding manner.

8. A grinding device for cast aluminum end caps of subway motors according to claim 1, characterized in that: The connecting slider (502) has a groove corresponding to the connecting slide rail (501), wherein the connecting slide rail (501) and the groove are connected by a sliding connection. There are multiple sets of connecting sliders (502), wherein the connecting sliders (502) at both ends are fixedly connected to the connecting slide rail (501), and the connecting crossbar (506) is connected to the second set of movable brackets (503).

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