Polishing device for differential shell

Abstract

The grinding device comprises a base, two sliding grooves are longitudinally formed in the top of the base, a workbench is fixedly erected and installed on the top of the base, and a grinding groove extending to the front face of the workbench is formed in the workbench; the pressing and fixing mechanism is located at the top of the workbench; and the protection type grinding mechanism comprises a sliding base, a lead screw, a driving motor, an electric cylinder, a grinding assembly and a protection plate, and the bottom of the sliding base is slidably connected with the two sliding grooves through sliding connecting pieces. The grinding device for the differential shell has the beneficial effects that the situation that workers are accidentally injured due to the fact that the grinding mechanism is started by mistake can be effectively avoided, the practical potential safety hazards of the device are greatly reduced, the good dust collection effect is achieved, the overall protection effect on the workers is good, and the use safety of the device is high.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a grinding device for a differential housing. Background Art

[0002] The differential is a critical component in the automotive transmission system. During the manufacturing process, its housing requires surface polishing to ensure assembly precision and surface quality. Currently, differential housing polishing is primarily done manually or with traditional polishing equipment. Manual polishing is not only inefficient but also difficult to ensure quality, prone to uneven polishing and impacting the performance of the differential housing.

[0003] After searching, the patent with application number CN202120900004.0 discloses a polishing device for computer cases, the key points of its technical solution are: it includes a base, the base has a top groove and a top column; a connecting column, the connecting column is arranged on the side where the top columns are close to each other; a fixing component, the fixing component is arranged inside the top groove, and is used to fix the computer case to be polished; the polishing component is arranged outside the connecting column, and is used to polish the computer case. By setting a carrying plate, the staff places the computer case to be polished on it through the carrying plate. The anti-slip pad can increase the friction to prevent the computer case from slipping when it is not fixed, and at the same time, it can also protect the inside of the computer case from damage. The push plate is pushed forward by the first electric push rod, and the protective pad protects the computer case from damaging the surface of the computer case when it is fixed. When the two push plates are close to each other, the computer case is restricted to achieve a fixed effect.

[0004] However, the grinding mechanism of conventional grinding devices for differential housings is mostly located above the workbench. During the grinding process, workers often need to perform manual operations above the workbench, which poses a great safety hazard. The structure needs to be improved and the safety needs to be enhanced. For example, when workers manually adjust the position and press and fix the differential housing, if the grinding mechanism is accidentally started, it is very easy to accidentally injure the workers, posing a great safety hazard. Summary of the Invention

[0005] The present invention discloses a grinding device for a differential housing, aiming to solve the technical problems that in conventional grinding devices for differential housings, the grinding mechanism is mostly located above a workbench. During the grinding process, workers often need to perform manual operations above the workbench, which poses a great safety hazard, requires structural improvement, and requires increased safety.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A grinding device for a differential case includes a base, two longitudinal slide grooves are formed on the top of the base, a workbench is fixedly mounted on the top of the base, and a grinding groove is formed inside the workbench and extends to the front surface thereof;

[0008] A pressing and fixing mechanism, wherein the pressing and fixing mechanism is located on the top of the workbench;

[0009] The protective grinding mechanism includes a slide seat, a screw rod, a driving motor, an electric cylinder, a grinding assembly and a protective plate. The bottom of the slide seat is slidably connected to the two slide grooves through a sliding connection. The screw rod is rotatably mounted on the top of the base through two bearing seats. The driving motor is fixedly mounted on the top of the base. The output end of the driving motor is connected to the screw rod. The external screw rod is screwed with a slider. One side of the slider is fixedly connected to one side of the slide seat. The electric cylinder is fixedly mounted on the top of the slide seat. The bottom of the grinding assembly is fixedly connected to the top telescopic end of the electric cylinder. The position of the grinding assembly matches the position of the grinding groove. Two protective plates are provided, and the top and bottom of the protective plates are respectively fixedly connected to the workbench and the base, and the two protective plates are respectively located on the front and back sides of the base. The position of the protective plate matches the position of the grinding assembly.

[0010] A dust collecting mechanism is located on the top of the base.

[0011] By adopting the above technical solution, when working, the electric cylinder can be started, and the electric cylinder can drive the grinding assembly to move up and adjust the position. After the grinding assembly is adjusted to the appropriate position, the differential housing can be ground. During grinding, the drive motor is started to drive the screw to rotate, thereby cooperating with the slider and the slide groove to drive the slide seat to move back and forth, and then drive the grinding assembly to move back and forth to grind the differential housing. Since the grinding assembly is located under the workbench and protective plates are provided in the front and rear directions of the grinding assembly, the staff can be effectively isolated from the grinding assembly. Even when the staff adjusts the position and presses and fixes the differential housing, it is not easy to accidentally injure the staff due to the accidental start-up of the grinding mechanism, which greatly improves the safety of the grinding device, reduces safety hazards, and has high practicality.

[0012] In a preferred embodiment, the dust collection mechanism includes a dust box and an exhaust fan, the dust box is fixedly installed on the top of the base, a box door is hinged on one side of the dust box, a filter plate is installed on the internal movable card of the dust box, the exhaust fan is fixedly installed on the top of the dust box, the exhaust end of the exhaust fan is connected to one side of the dust box, the other side of the dust box is connected to a conduit, and the other end of the conduit is connected to a dust hood; the dust hood is designed to be inclined, and the dust hood is inclined toward the grinding groove.

[0013] In this solution, when the differential housing is being polished, suction can be generated at the dust hood through the operation of the exhaust fan, in conjunction with the dust box and the duct, to draw a large amount of dust generated during the polishing of the differential housing into the dust box for centralized collection and storage, effectively preventing a large amount of dust from drifting into the nearby air and endangering nearby workers, further improving the protection effect on workers, and having high practicality.

[0014] From the above, it can be seen that a grinding device for a differential case includes a base, two slide grooves are longitudinally opened on the top of the base, a workbench is fixedly mounted on the top of the base, and a grinding groove extending to the front of the workbench is opened inside the workbench; a clamping and fixing mechanism, the clamping and fixing mechanism is located on the top of the workbench; a protective grinding mechanism, the protective grinding mechanism includes a slide, a screw, a drive motor, an electric cylinder, a grinding assembly and a protective plate, the bottom of the slide is slidably connected to the two slide grooves through a sliding connection, the screw is rotatably installed on the top of the base through two bearing seats, and the drive motor is fixed It is installed on the top of the base, the output end of the driving motor is connected to the screw rod, the external threaded connection of the screw rod is provided with a slider, one side of the slider is fixedly connected to one side of the slide, the electric cylinder is fixedly installed on the top of the slide, the bottom of the grinding assembly is fixedly connected to the top telescopic end of the electric cylinder, the position of the grinding assembly matches the position of the grinding groove, there are two protective plates, the top and bottom of the protective plates are respectively fixedly connected to the workbench and the base, and the two protective plates are respectively located on the front and rear sides of the base, and the position of the protective plate matches the position of the grinding assembly; dust collection mechanism, the dust collection mechanism is located at the top of the base.

[0015] The grinding device for the differential housing provided by the present invention can effectively avoid accidental injury to workers due to incorrect startup of the grinding mechanism, greatly reducing the practical safety hazards of the device, and has a good dust collection effect, an overall better protection effect for workers, and a technical effect of higher safety in use of the device.

[0016] The creativity of this differential case grinding device is mainly reflected in four dimensions: safety protection design, structural integration innovation, dust treatment solution, and workpiece fixing mechanism. Through multi-mechanism collaborative optimization, it solves the safety hazards, dust pollution, and processing stability problems of traditional grinding equipment. The details are as follows:

[0017] The grinding disc of the present invention is arranged in the grinding groove under the workbench, and physical isolation is formed by transparent tempered glass protective plates on the front and back sides, which completely separates the grinding area from the operator, avoiding mechanical damage caused by accidental start-up of the grinding disc, and breaking through the safety limitations of traditional open grinding.

[0018] The protective plate of the present invention adopts transparent tempered glass, which allows the operator to observe the running status of the grinding disc in real time while ensuring the protective strength, taking into account both safety and processing visibility, and improving the controllability of operation.

[0019] Through the linkage of the screw-slider transmission system (the driving motor drives the screw to rotate, and cooperates with the slide to realize the forward and backward movement of the slide) and the electric cylinder (controls the up and down movement of the grinding disc), the three-dimensional motion control of the grinding disc is realized. Automated processing can be completed without manual contact with the grinding area, reducing the risk of manual operation.

[0020] The L-shaped mounting seat of the present invention cooperates with the reinforced support block to enhance the anti-deformation ability of the fixed structure; one side of the workpiece is positioned in contact with the front of the mounting seat to ensure the accuracy of the grinding position and solve the problem of uneven grinding caused by workpiece offset in traditional fixing methods.

[0021] The combined design of the telescopic rod and the clamping knob of the present invention can drive the clamping plate to press vertically downward by rotating the knob, and cooperate with the anti-slip pad to increase friction, thereby achieving rapid positioning and firm fixation of the workpiece, convenient operation and high stability.

[0022] The fixing mechanism of the present invention is arranged on the top of the workbench, which is ergonomic. The operator can complete the positioning and pressing of the workpiece outside the protective plate, avoiding contact with the dangerous area and improving the safety of operation.

[0023] The dust hood of the present invention is designed to be tilted toward the grinding groove, accurately aimed at the dust source, and cooperates with the exhaust fan and the duct to form negative pressure suction, so as to efficiently collect the dust generated during the grinding process. Compared with traditional side suction or top suction dust collection devices, the dust capture efficiency is significantly improved.

[0024] The dust collecting box of the present invention is provided with a filter plate inside to separate dust from air, which is convenient for subsequent cleaning and avoids dust emission to pollute the working environment, thus meeting the requirements of environmental protection and occupational health.

[0025] The dust collecting box of the present invention adopts a hinged box door and a removable filter plate, which is convenient for regular cleaning of dust and convenient for maintenance, thereby ensuring the long-term stable operation of the dust collecting system.

[0026] The base, workbench, grinding mechanism, fixing mechanism and dust collection mechanism of the present invention are integrated into the same equipment through modular design. The positions of each component are matched (such as the grinding disc is aligned with the grinding groove, and the dust collection hood is aligned with the grinding area), realizing the automation of the entire process of "positioning-grinding-dust removal", improving processing efficiency and consistency; the protective plate, dust collection mechanism and fixing mechanism form triple protection (mechanical isolation, dust collection, and workpiece stabilization), breaking through the single-function design of traditional equipment and building a safe and environmentally friendly integrated processing solution.

[0027] Through multi-dimensional innovations of "safety protection + precise fixation + efficient dust removal", this device solves the safety hazards, dust pollution and processing stability problems of traditional grinding equipment. Its core creativity lies in the organic combination of mechanical structure design, ergonomics and environmental protection needs to form an integrated solution with engineering practicality and technological advancement. It is especially suitable for the automated grinding scenarios of precision parts such as differential housings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0029] Figure 2 This is a schematic diagram of the drive motor installation structure of the present invention.

[0030] Figure 3 This is a schematic diagram of the installation structure of the pressing plate of the present invention.

[0031] Figure 4 This is a schematic diagram of the explosion structure of the grinding motor installation of the present invention.

[0032] Figure 5 This is a schematic diagram of the filter plate installation structure of the present invention.

[0033] In the picture:

[0034] 1. Base; 2. Slide; 3. Workbench; 4. Grinding groove;

[0035] 5. Compression fixing mechanism; 501. Mounting seat; 502. Compression plate; 503. Compression knob; 504. Telescopic rod; 505. Reinforced support block; 506. Anti-slip pad;

[0036] 6. Protective grinding mechanism; 601. Slide; 602. Screw; 603. Drive motor; 604. Electric cylinder; 605. Grinding assembly; 6051. Mounting frame; 6052. Grinding motor; 6053. Grinding disc; 606. Protective plate; 607. Slider;

[0037] 7. Dust collection mechanism; 701. Dust collection box; 702. Exhaust fan; 703. Box door; 704. Filter plate; 705. Dust duct; 706. Dust hood. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0039] The present invention discloses a grinding device for a differential case, which is mainly used in traditional grinding devices for differential cases, wherein the grinding mechanism is mostly located above the workbench. During the grinding process, workers often need to perform manual operations above the workbench, which poses a great safety hazard. The structure needs to be improved, and the safety needs to be improved.

[0040] Reference Figure 1-Figure 5A grinding device for a differential case includes a base 1, two longitudinal slide grooves 2 are provided on the top of the base 1, a workbench 3 is fixedly mounted on the top of the base 1, and a grinding groove 4 extending to the front of the workbench 3 is provided inside the workbench 3; a clamping and fixing mechanism 5, which is located on the top of the workbench 3; a protective grinding mechanism 6, which includes a slide 601, a screw 602, a drive motor 603, an electric cylinder 604, and a grinding assembly 606. 05 and protective plate 606, the bottom of the slide 601 is slidably connected to the two slide grooves 2 through a sliding connection, the screw 602 is rotatably installed on the top of the base 1 through two bearing seats, the drive motor 603 is fixedly installed on the top of the base 1, and the output end of the drive motor 603 is connected to the screw 602, the external screw 602 is screwed with a slider 607, one side of the slider 607 is fixedly connected to one side of the slide 601, the electric cylinder 604 is fixedly installed on the top of the slide 601, the bottom of the grinding assembly 605 is fixedly connected to the top telescopic end of the electric cylinder 604, and the position of the grinding assembly 605 matches the position of the grinding groove 4, there are two protective plates 606, the top and bottom of the protective plates 606 are respectively fixedly connected to the workbench 3 and the base 1, and the two protective plates 606 are respectively located on the front and back sides of the base 1, and the position of the protective plates 606 matches the position of the grinding assembly 605; dust collecting mechanism 7, the dust collecting mechanism 7 is located at the top of the base 1; grinding Component 605 includes a mounting frame 6051 and a grinding motor 6052. The bottom of the mounting frame 6051 is fixedly connected to the top telescopic end of the electric cylinder 604. The grinding motor 6052 is fixedly installed inside the mounting frame 6051. The output end of the grinding motor 6052 is connected to the grinding disc 6053, and the grinding disc 6053 is located directly below the grinding groove 4. The protective plate 606 is made of transparent tempered glass material, and the thickness of the protective plate 606 is 0.5cm-0.8cm.

[0041] In the specific implementation process, when working, the differential housing can be placed on the workbench 3 and adjusted to a good position, and it can be pressed and fixed by the pressing and fixing mechanism 5. At this time, the electric cylinder 604 can be started to drive the mounting frame 6051 to move up, thereby driving the grinding disc 6053 to move up to its top and be located in the grinding groove 4, and then the grinding motor 6052 and the drive motor 603 are started. The grinding motor 6052 works to drive the grinding disc 6053 to rotate, and the drive motor 603 drives the screw rod 602 to rotate, and the screw rod 602 rotates in coordination with the grinding motor 6052. The slider 607 and the slide 2 drive the slide 601 to move forward and backward, thereby driving the grinding disc 6053 to move forward and backward, and then grinding the differential housing. Since the grinding disc 6053 is located below the workbench 3 and protective plates 606 are provided in the front and rear directions of the grinding disc 6053, the workers can be effectively isolated from the grinding disc 6053. Even when the workers are adjusting the position and pressing and fixing the differential housing, it is not easy for the grinding disc 6053 to start accidentally and injure the workers.

[0042] Among them, the protective plate 606 is made of tempered glass with a certain degree of follow-up. While having a good protective effect, it is also convenient for the staff to observe the operating status of the grinding disc 6053, thereby facilitating processing control operations.

[0043] Reference Figure 3 In a preferred embodiment, the clamping and fixing mechanism 5 includes a mounting seat 501, a clamping plate 502 and a clamping knob 503. The mounting seat 501 is L-shaped and is fixedly installed on the top of the workbench 3. A plurality of telescopic rods 504 are fixedly installed at the bottom of the L-shaped turning surface of the mounting seat 501. The bottom of the telescopic rod 504 is fixedly connected to the top of the clamping plate 502. One end of the clamping knob 503 passes through the mounting seat 501 by screwing, and the bottom end of the clamping knob 503 is fixedly connected to the top of the clamping plate 502 through a rotating connector; a reinforcing support block 505 is provided at the L-shaped turning point of the mounting seat 501, and an anti-slip pad layer 506 is fixed to the bottom of the clamping plate 502.

[0044] During the specific implementation process, the differential housing can be placed on the workbench 3, and one side of the differential housing can be abutted against the front surface of the mounting seat 501 to ensure the neatness of the subsequent grinding of the differential housing. After adjusting the position of the differential housing, the pressing knob 503 is rotated to cooperate with the multiple telescopic rods 504 to drive the pressing plate 502 to move downward until the pressing plate 502 abuts against the differential housing, thereby completing the pressing and fixing of the differential housing and improving the stability of the subsequent grinding process.

[0045] Among them, the reinforced support block 505 can effectively improve the stability of the mounting seat 501, and the anti-slip pad layer 506 can effectively improve the abutting friction between the clamping plate 502 and the differential housing, ensuring good clamping and fixing stability of the differential housing.

[0046] Reference Figure 5 In a preferred embodiment, the dust collecting mechanism 7 includes a dust collecting box 701 and an exhaust fan 702. The dust collecting box 701 is fixedly installed on the top of the base 1. A box door 703 is hinged on one side of the dust collecting box 701. A filter plate 704 is installed inside the dust collecting box 701. The exhaust fan 702 is fixedly installed on the top of the dust collecting box 701. The exhaust end of the exhaust fan 702 is connected to one side of the dust collecting box 701. The other side of the dust collecting box 701 is connected to a conduit 705. The other end of the conduit 705 is connected to a dust collecting hood 706; the dust collecting hood 706 is designed to be inclined, and the dust collecting hood 706 is inclined toward the grinding groove 4.

[0047] During the specific implementation process, when the differential housing is being polished, the exhaust fan 702 can be started, and in conjunction with the dust box 701 and the duct 705, suction can be generated at the dust hood 706 to draw a large amount of dust generated during the polishing of the differential housing into the dust box 701 for centralized collection and storage, effectively preventing a large amount of dust from drifting into the nearby air and endangering nearby workers, further improving the protection effect for the workers. After the polishing is completed, the box door 703 can be opened, the filter plate 704 can be pulled out, and the dust inside the dust box 701 and on the filter plate 704 can be cleaned centrally.

[0048] Working principle: During operation, the differential housing can be placed on the workbench 3, and one side of the differential housing can be fitted and abutted against the front of the mounting seat 501 to ensure the neatness of the subsequent grinding of the differential housing. After adjusting the position of the differential housing, by turning the clamping knob 503 and coordinating with multiple telescopic rods 504, the clamping plate 502 is driven to move downward until the clamping plate 502 abuts against the differential housing, thereby completing the clamping and fixing of the differential housing and improving the stability of the subsequent grinding process. Then, the electric cylinder 604 can be started to drive the mounting frame 6051 to move upward, thereby driving the grinding disc 6053 to move upward until its top is located in the grinding groove 4 or slightly passes through the grinding groove 4, and then the grinding motor 6052 and The driving motor 603 and the grinding motor 6052 drive the grinding disc 6053 to rotate, and the driving motor 603 drives the screw rod 602 to rotate. The screw rod 602 rotates in conjunction with the slider 607 and the slide groove 2 to drive the slide 601 to move back and forth, thereby driving the grinding disc 6053 to move back and forth, and then grinding the differential housing. Since the grinding disc 6053 is located below the workbench 3 and protective plates 606 are provided in the front and rear directions of the grinding disc 6053, the staff can be effectively isolated from the grinding disc 6053. Even when the staff adjusts the position and presses and fixes the differential housing, it is not easy for the staff to be accidentally injured by the grinding disc 6053 when it is accidentally started.

[0049] When the differential housing is being polished, the exhaust fan 702 can be started, and in conjunction with the dust box 701 and the duct 705, suction can be generated at the dust hood 706 to draw a large amount of dust generated during the polishing of the differential housing into the dust box 701 for centralized collection and storage, effectively preventing a large amount of dust from drifting into the nearby air and endangering nearby workers, further improving the protection effect for the workers. After the polishing is completed, the box door 703 can be opened, the filter plate 704 can be pulled out, and the dust inside the dust box 701 and on the filter plate 704 can be cleaned centrally.

[0050] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacement may be a replacement of a portion of a structure, device, or method step, or it may be a complete technical solution. Any equivalent replacement or modification based on the technical solution and inventive concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A grinding device for a differential housing, comprising a base (1), characterized in that: Two slide grooves (2) are longitudinally provided on the top of the base (1); a workbench (3) is fixedly mounted on the top of the base (1); and a grinding groove (4) is provided inside the workbench (3) and extends to the front thereof; A protective grinding mechanism (6) includes a slide (601), the bottom of the slide (601) is slidably connected to two slide grooves (2) through a sliding connection, the screw rod (602) is rotatably mounted on the top of the base (1) through two bearing seats, the drive motor (603) is fixedly mounted on the top of the base (1), the output end of the drive motor (603) is connected to the screw rod (602), the outside of the screw rod (602) is screwed with a slider (607), one side of the slider (607) is fixedly connected to one side of the slide (601), and the electric cylinder (604) is fixedly mounted on the top of the slide (601).

2. A grinding device for a differential case according to claim 1, characterized in that: The bottom of the grinding assembly (605) is fixedly connected to the top telescopic end of the electric cylinder (604), and the position of the grinding assembly (605) matches the position of the grinding groove (4).

3. The grinding device for a differential case according to claim 1, characterized in that: Two protective plates (606) are provided, and the top and bottom of the protective plates (606) are fixedly connected to the workbench (3) and the base (1) respectively, and the two protective plates (606) are respectively located on the front and rear sides of the base (1), and the positions of the protective plates (606) match the position of the grinding assembly (605).

4. The grinding device for a differential case according to claim 1, characterized in that: The grinding assembly (605) includes a mounting frame (6051) and a grinding motor (6052). The bottom of the mounting frame (6051) is fixedly connected to the top telescopic end of the electric cylinder (604). The grinding motor (6052) is fixedly installed inside the mounting frame (6051). The output end of the grinding motor (6052) is connected to a grinding disc (6053). The grinding disc (6053) is located directly below the grinding groove (4).

5. The grinding device for a differential case according to claim 4, characterized in that: The protective plate (606) is made of transparent tempered glass material, and the thickness of the protective plate (606) is 0.5 cm-0.8 cm.

6. The grinding device for a differential case according to claim 1, characterized in that: Also includes: A pressing and fixing mechanism (5), wherein the pressing and fixing mechanism (5) is located on the top of the workbench (3); The clamping and fixing mechanism (5) comprises a mounting seat (501), the mounting seat (501) is L-shaped, the mounting seat (501) is fixedly mounted on the top of the workbench (3), a plurality of telescopic rods (504) are fixedly mounted on the bottom of the L-shaped turning surface of the mounting seat (501), the bottom of the telescopic rods (504) is fixedly connected to the top of the clamping plate (502), one end of the clamping knob (503) passes through the mounting seat (501) by screw connection, and the bottom end of the clamping knob (503) is fixedly connected to the top of the clamping plate (502) by a rotating connecting piece.

7. The grinding device for a differential case according to claim 4, characterized in that: A reinforcing support block (505) is provided at the L-shaped turning point of the mounting seat (501), and an anti-slip pad layer (506) is fixedly attached to the bottom of the pressing plate (502).

8. The grinding device for a differential case according to claim 1, characterized in that: Also includes: A dust collecting mechanism (7), the dust collecting mechanism (7) being located on the top of the base (1); The dust collecting mechanism (7) comprises a dust collecting box (701) and an exhaust fan (702); the dust collecting box (701) is fixedly mounted on the top of the base (1); a box door (703) is hinged on one side of the dust collecting box (701); and a filter plate (704) is movably mounted inside the dust collecting box (701).

9. A grinding device for a differential case according to claim 8, characterized in that: The exhaust fan (702) is fixedly installed on the top of the dust collecting box (701), the exhaust end of the exhaust fan (702) is connected to one side of the dust collecting box (701), the other side of the dust collecting box (701) is connected to a conduit (705), and the other end of the conduit (705) is connected to a dust collecting hood (706).

10. The grinding device for a differential case according to claim 9, characterized in that: The dust collecting cover (706) is designed to be inclined, and the dust collecting cover (706) is inclined toward the grinding groove (4).

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