Bearing seat machining device with overturning function

Abstract

The invention relates to the technical field of bearing seat machining, and discloses a bearing seat machining device with an overturning function, which comprises a frame body, four groups of vertical rods are fixedly connected to the top of the frame body, and a chamfering assembly for chamfering an inner ring of a bearing seat is slidably connected among the four groups of vertical rods through sliding sleeves; lifting driving mechanisms for driving the chamfering assemblies to conduct lifting operation are arranged in the four sets of vertical rods, and a turnover type clamping assembly for rapidly installing the bearing pedestal and conducting turnover auxiliary chamfering operation is arranged at the position, located below the chamfering assemblies, of the top of the frame body. And a side grinding assembly for grinding and deburring the bottom edge of the bearing seat is arranged at the top of the frame body and located on the rear side of the overturning type clamping assembly. Through cooperative use of the overturning type clamping assembly, the chamfering assembly and the side grinding assembly, double-face chamfering operation of the inner ring of the bearing seat and grinding operation of the bottom edge of the bearing seat are achieved, the equipment integration degree is high, and use is easy and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing housing processing, and specifically provides a bearing housing processing device with a flipping function. Background Art

[0002] In the field of machining and manufacturing, the bearing housing, as a key component for supporting and fixing bearings, has an important impact on the performance and reliability of the entire mechanical system in terms of its processing quality and efficiency.

[0003] Currently, there are still the following problems when chamfering the inner ring of the bearing housing: 1. Traditional chamfering of the inner ring of the bearing housing is often limited to a single processing position and direction. When performing multi-faceted processing, it is necessary to manually flip and reposition the bearing housing frequently. This process not only consumes a large amount of manpower and time, but also due to the uncertainty of manual operation, it is difficult to ensure the accuracy of each flip and positioning, easily leading to the accumulation of processing errors, and thus affecting the processing accuracy and quality of the bearing housing; 2. Since burrs are likely to appear on the bottom edge of the bearing housing, it causes the bearing housing to be uneven during installation, affecting the installation levelness of the bearing housing, and additional grinding is required. The required equipment is numerous, and the transportation process is cumbersome, affecting the processing effect. Summary of the Invention

[0004] Technical Problem to be Solved Aiming at the deficiencies of the prior art, the present invention provides a bearing housing processing device with a flipping function, mainly to solve the problems that traditional chamfering of the inner ring of the bearing housing is often limited to a single processing position and direction. When performing multi-faceted processing, it is necessary to manually flip and reposition the bearing housing frequently. This process not only consumes a large amount of manpower and time, but also due to the uncertainty of manual operation, it is difficult to ensure the accuracy of each flip and positioning, easily leading to the accumulation of processing errors, and thus affecting the processing accuracy and quality of the bearing housing; and because burrs are likely to appear on the bottom edge of the bearing housing, it causes the bearing housing to be uneven during installation, affecting the installation levelness of the bearing housing, and additional grinding is required. The required equipment is numerous, and the transportation process is cumbersome, affecting the processing effect.

[0005] Technical Solution To achieve the above object, the present invention provides the following technical solution: A bearing seat processing device with a flipping function, comprising a frame body. Four vertical rods are fixedly connected to the top of the frame body. A chamfering assembly for chamfering the inner ring of the bearing seat is slidably connected between the four vertical rods through sliding sleeves. An elevating drive mechanism for driving the chamfering assembly to perform elevating operations is arranged inside the four vertical rods. A flipping clamping assembly for quickly installing the bearing seat and assisting in chamfering operations by flipping is arranged at the top of the frame body and below the chamfering assembly. A side grinding assembly for grinding and deburring the bottom edge of the bearing seat is arranged at the top of the frame body and behind the flipping clamping assembly.

[0006] As a further scheme of the present invention, the flipping clamping assembly includes two vertical frames fixedly connected to the top of the frame body. Inside both of the two vertical frames, a rotating seat is rotatably connected through bearings. On one side of both of the two rotating seats, a profiling cavity is formed by profiling the bearing seat. A rotating drive mechanism for simultaneously driving the two rotating seats to flip is arranged at the top of the frame body. The rotation center line of the rotating seat is in the same plane as the inner ring center line of the bearing seat. A locking assembly for fixing the flipping position of the rotating seat is arranged on one side of one of the vertical frames. A side fixing assembly for assisting in fixing the bearing seat is arranged between the two rotating seats.

[0007] As a further scheme of the present invention, the rotating drive mechanism includes two vertical mounting seats fixedly connected to the top of the frame body. A synchronous shaft is rotatably connected between the two vertical mounting seats through bearings. At both ends and one side of the synchronous shaft, a driving synchronous pulley one and a driven synchronous pulley are respectively fixedly connected. At one end of both of the two rotating seats, a driving synchronous pulley two fixedly connected to the driving synchronous pulley one through a synchronous belt is fixedly connected. A driving motor is fixedly connected inside the frame body. One end of the output shaft of the driving motor is key-connected to a driving synchronous pulley fixedly connected to the driven synchronous pulley through a synchronous belt.

[0008] As a further scheme of the present invention, the locking assembly includes a rotating plate fixedly connected to one end of one of the rotating seats. Pin holes are formed at the top and bottom of the rotating plate. An electric control lock matched with the pin holes is fixedly connected to one side of one of the vertical frames.

[0009] As a further scheme of the present invention, the side fixing assembly includes blocking plates respectively fixedly connected to the top and bottom of the two rotating seats. The four groups of blocking plates form a secondary fixing state for the bearing seat. Connecting plates are fixedly connected between adjacent two blocking plates. An arc-shaped magnetic plate for magnetically attracting the bearing seat is fixedly connected between the two connecting plates.

[0010] As a further scheme of the present invention, the chamfering assembly includes a chamfering motor fixedly connected inside the lifting frame. One end of the output shaft of the chamfering motor passes through the lifting frame and is installed with a chamfering cutter head through a coupling.

[0011] As a further solution of the present invention, the lifting drive mechanism includes a fixed partition fixedly connected between the four groups of vertical rods, and a lifting electric push rod for driving the lifting frame to move vertically along the vertical rods is fixedly connected to the top of the fixed partition.

[0012] As a further solution of the present invention, a collection box is placed on the top of the frame body, and the collection box is located below the flip-type clamping assembly.

[0013] As a further solution of the present invention, the side grinding assembly includes a mounting frame fixedly connected to the top of the frame body. Two guide rails are fixedly connected to the top of the mounting frame. A cross-moving plate is slidably connected between the two guide rails through a sliding table. Three rollers, namely a driving roller and two driven rollers, are rotatably connected to the top of the cross-moving plate and are distributed in a triangular shape. A grinding belt is wound around the driving roller and the two driven rollers. A grinding motor for driving the driving roller to rotate is provided at the bottom of the cross-moving plate. A limiting plate for positioning the position of the grinding belt is fixedly connected to the top of the cross-moving plate. A cross-moving electric push rod for driving the cross-moving plate to move horizontally along the guide rail is provided on one side of the mounting frame.

[0014] Beneficial effects Compared with the prior art, the present invention provides a bearing seat processing device with a flipping function, and has the following beneficial effects: 1. By the combined use of the flip-type clamping assembly, the chamfering assembly and the side grinding assembly, the present invention realizes double-sided chamfering operation of the inner ring of the bearing seat and the grinding operation of the bottom edge of the bearing seat. The device has a high degree of integration and is simple and convenient to use.

[0015] 2. The present invention realizes the quick clamping of the bearing seat and the 180° flipping of the bearing seat through the flip-type clamping assembly, and the rotation center line of the rotating seat is in the same plane as the inner ring center line of the bearing seat, effectively ensuring that the position of the inner ring of the bearing seat remains unchanged after flipping.

[0016] 3. The present invention forms a secondary fixing state for the bearing seat through four groups of blocking plates. At the same time, since the top arc surface of the bearing seat contacts the arc-shaped magnetic plate, the arc-shaped magnetic plate generates magnetic attraction fixation on the bearing seat.

[0017] 4. The present invention inserts the lock tongue of the electric control lock into the pin hole opened on the rotating plate, and locks and fixes the position of the rotating seat, effectively ensuring the stability during the chamfering operation of the bearing seat.

[0018] 5. The present invention performs a deburring operation on the bottom edge of the bearing seat through the side grinding assembly, which is beneficial to the subsequent flat installation of the bearing seat. Description of the drawings

[0019] Figure 1 It is a front-side three-dimensional structural schematic diagram of a bearing seat processing device with a flipping function proposed by the present invention; Figure 2 Schematic diagram of the flipping clamping assembly structure of a bearing housing processing device with a flipping function proposed by the present invention; Figure 3 Schematic diagram of the side fixing assembly structure of a bearing housing processing device with a flipping function proposed by the present invention; Figure 4 Schematic diagram of the chamfering assembly structure of a bearing housing processing device with a flipping function proposed by the present invention; Figure 5 Schematic diagram of the side grinding assembly structure of a bearing housing processing device with a flipping function proposed by the present invention.

[0020] In the figure: 1, lifting frame; 2, vertical rod; 3, frame body; 4, chamfering assembly; 5, side grinding assembly; 6, flipping clamping assembly; 7, collection box; 8, locking assembly; 9, side fixing assembly; 10, lifting electric push rod; 11, fixed partition; 401, chamfering motor; 402, chamfering cutter head; 501, driving roller; 502, grinding belt; 503, limiting plate; 504, driving roller; 505, transverse moving plate; 506, grinding motor; 507, mounting frame; 508, guide rail; 509, transverse moving electric push rod; 601, vertical frame; 602, rotating seat; 603, profiling cavity; 604, driving synchronous pulley I; 605, driven synchronous pulley; 606, driving synchronous pulley; 607, driving motor; 608, synchronous shaft; 609, vertical mounting seat; 610, driving synchronous pulley II; 801, pin hole; 802, rotating plate; 803, electric control lock; 901, blocking plate; 902, connecting plate; 903, arc-shaped magnetic plate. Detailed implementation manners

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The serial numbers assigned to the components in this text, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this invention, unless otherwise specified, both include direct and indirect connections (couplings). In the description of this invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this invention.

[0023] In this invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0024] Referring to Figures 1 - 5 , a bearing seat processing device with a flipping function, comprising a frame body 3. Four groups of vertical rods 2 are fixedly installed at the top of the frame body 3 through bolts. A chamfering component 4 for chamfering the inner ring of the bearing seat is slidably connected between the four groups of vertical rods 2 through sliding sleeves. The chamfering component 4 includes a chamfering motor 401 fixedly installed inside the lifting frame 1 through bolts. One end of the output shaft of the chamfering motor 401 passes through the lifting frame 1 and is installed with a chamfering cutter head 402 through a coupling. The rotation of the chamfering motor 401 drives the chamfering cutter head 402 to rotate at a high speed. A lifting drive mechanism for driving the chamfering component 4 to perform lifting operations is arranged inside the four groups of vertical rods 2. The lifting drive mechanism includes a fixed partition plate 11 fixedly installed between the four groups of vertical rods 2 through bolts. A lifting electric push rod 10 for driving the lifting frame 1 to move vertically along the vertical rods 2 is fixedly installed at the top of the fixed partition plate 11 through bolts. By starting the lifting electric push rod 10, the elongation of the lifting electric push rod 10 drives the lifting frame 1 to move downward, so that the rotating chamfering cutter head 402 moves downward and contacts the inner ring of the bearing seat to be chamfered, and chamfering operations are performed. A flipping type clamping component 6 for quickly installing the bearing seat and performing flipping-assisted chamfering operations is arranged at the top of the frame body 3 and below the chamfering component 4. A side grinding component 5 for grinding and deburring the bottom edge of the bearing seat is arranged at the top of the frame body 3 and behind the flipping type clamping component 6. A collection box 7 is placed at the top of the frame body 3, and the collection box 7 is located below the flipping type clamping component 6.

[0025] The flip clamping assembly 6 in the present invention includes two vertical frames 601 fixed to the top of the frame body 3 by bolts. Inside both of the two vertical frames 601, there is a rotating seat 602 rotatably connected through bearings. On one side of each of the two rotating seats 602, a profiling cavity 603 is formed by profiling the bearing seat. At the top of the frame body 3, there is a rotation driving mechanism for simultaneously driving the two rotating seats 602 to flip. The rotation center line of the rotating seat 602 is in the same plane as the inner ring center line of the bearing seat. On one side of one of the vertical frames 601, there is a locking assembly 8 for fixing the flipping position of the rotating seat 602. Between the two rotating seats 602, there is a side fixing assembly 9 for assisting in fixing the bearing seat. The rotation driving mechanism includes two vertical mounting seats 609 fixed to the top of the frame body 3 by bolts. Between the two vertical mounting seats 609, there is a synchronous shaft 608 rotatably connected through bearings. At both ends and one side of the synchronous shaft 608, there are respectively fixed with a driving synchronous pulley 604 and a driven synchronous pulley 605 by bolts. At one end of each of the two rotating seats 602, there is a driven synchronous pulley 610 fixed by bolts and connected to the driving synchronous pulley 604 through a synchronous belt. Inside the frame body 3, there is a driving motor 607 fixed by bolts. At one end of the output shaft of the driving motor 607, there is a key connection with a driving synchronous pulley 606 connected to the driven synchronous pulley 605 through a synchronous belt. The locking assembly 8 includes a rotating plate 802 fixed to one end of one of the rotating seats 602 by bolts. At the top and bottom of the rotating plate 802, there are pin holes 801 formed. On one side of one of the vertical frames 601, there is an electric control lock 803 fixed by bolts and matching with the pin holes 801. By clamping and installing the bearing seat to be processed into the profiling cavities 603 at the beginning of the two rotating seats 602, and then performing secondary fixation through the side fixing assembly 9. Immediately afterwards, the chamfering cutter head 402 in rotation moves downward and contacts the inner ring of the bearing seat to be chamfered, and chamfering operation is carried out. After chamfering one side of the bearing seat is completed, the chamfering cutter head 402 moves upward to reset. At this time, by starting the driving motor 607, the driving motor 607 rotates to drive the driving synchronous pulley 606 to drive the synchronous shaft 608 to rotate through the driven synchronous pulley 605. The synchronous shaft 608 rotates to drive the driving synchronous pulley 604 to drive the two rotating seats 602 to flip synchronously through the driven synchronous pulley 610 until the two rotating seats 602 and the bearing seat are flipped clockwise by 180° and then stop. At this time, the locking tongue of the electric control lock 803 is inserted into the pin holes 801 formed in the rotating plate 802, and the position of the rotating seat 602 is locked and fixed. Then, the chamfering cutter head 402 in rotation moves downward and contacts the inner ring of the bearing seat to be chamfered, and secondary chamfering operation is carried out.

[0026] The side fixing component 9 in the present invention includes baffle plates 901 respectively fixed to the top and bottom of two rotating seats 602 by bolts. Four groups of baffle plates 901 form a secondary fixing state for the bearing seat. Connecting plates 902 are fixed between adjacent two baffle plates 901 by bolts. An arc-shaped magnetic plate 903 that magnetically attracts the bearing seat is fixed between two connecting plates 902. A secondary fixing state for the bearing seat is formed by four groups of baffle plates 901. At the same time, since the top arc surface of the bearing seat contacts the arc-shaped magnetic plate 903, magnetic attraction fixation is generated for the bearing seat through the arc-shaped magnetic plate 903.

[0027] The side grinding component 5 in the present invention includes a mounting frame 507 fixed to the top of the frame body 3 by bolts. Two guide rails 508 are fixed to the top of the mounting frame 507 by bolts. A cross-moving plate 505 is slidably connected between two guide rails 508 through a sliding table. The top of the cross-moving plate 505 is rotatably connected with a driving roller 504 and two driven rollers 501 distributed in a triangle. A grinding belt 502 is wound around between the driving roller 504 and two driven rollers 501. A grinding motor 506 for driving the driving roller 504 to rotate is arranged at the bottom of the cross-moving plate 505. A limiting plate 503 for positioning the position of the grinding belt 502 is fixed to the top of the cross-moving plate 505 by bolts. A cross-moving electric push rod 509 for driving the cross-moving plate 505 to move horizontally along the guide rail 508 is arranged on one side of the mounting frame 507. By starting the grinding motor 506, the grinding motor 506 rotates to drive the driving roller 504 to drive the grinding belt 502 to rotate through two driven rollers 501. At this time, start the cross-moving electric push rod 509. The cross-moving electric push rod 509 extends to drive the cross-moving plate 505 to move inwards, and makes the rotating grinding belt 502 contact the bottom edge of the bearing seat, and performs the operation of grinding and deburring the bottom edge of the bearing seat.

[0028] When the present invention is in use, it is divided into the following steps: S1: First, the bearing seat to be processed is clamped and installed into the profiling cavity 603 starting from two rotating seats 602. Then, a secondary fixing state for the bearing seat is formed by four groups of baffle plates 901. At the same time, since the top arc surface of the bearing seat contacts the arc-shaped magnetic plate 903, magnetic attraction fixation is generated for the bearing seat through the arc-shaped magnetic plate 903; S2: Then start the chamfering motor 401, and the chamfering motor 401 rotates to drive the chamfering cutter head 402 to rotate at a high speed; S3: By starting the lifting electric push rod 10, the lifting electric push rod 10 extends to drive the lifting frame 1 to move downwards, so that the rotating chamfering cutter head 402 moves downwards and contacts the inner ring of the bearing seat to be chamfered, and chamfering operation is performed; S4: After the chamfering of the inner ring on one side of the bearing housing is completed, the chamfering cutter head 402 moves upward to reset. At this time, by starting the driving motor 607, the driving motor 607 rotates to drive the driving synchronous pulley 606 to drive the synchronous shaft 608 to rotate through the driven synchronous pulley 605. The rotation of the synchronous shaft 608 causes the first transmission synchronous pulley 604 to drive the two rotating seats 602 to flip synchronously through the second transmission synchronous pulley 610 until the two rotating seats 602 and the bearing housing are flipped clockwise by 180° and then stop. At this time, the locking tongue of the electric control lock 803 is inserted into the pin hole 801 opened in the rotating plate 802, and the position of the rotating seat 602 is locked and fixed. Since the rotation center line of the rotating seat 602 and the inner ring center line of the bearing housing are in the same plane, the chamfering cutter head 402 in rotation can move downward to contact the inner ring of the bearing housing to be chamfered and perform the secondary chamfering operation; S5: At the same time, the bottom edge of the bearing housing rotates to face the grinding station. Then, by starting the grinding motor 506, the grinding motor 506 rotates to drive the driving roller 504 to drive the grinding belt 502 to rotate through the two transmission rollers 501. At this time, start the transverse translation electric push rod 509. The transverse translation electric push rod 509 extends to drive the transverse translation plate 505 to move inward, and the rotating grinding belt 502 contacts the bottom edge of the bearing housing, and the bottom edge of the bearing housing is ground and deburred.

[0029] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0030] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A bearing seat processing device with a flipping function, comprising a frame (3), the top of which is fixedly connected with four groups of vertical rods (2), characterized in that: A chamfering assembly (4) for chamfering the inner ring of the bearing seat is slidably connected between the four groups of vertical rods (2) via a sliding sleeve. A lifting drive mechanism is provided in the four groups of vertical rods (2) for driving the chamfering assembly (4) to perform a lifting operation. A flip-type clamping assembly (6) for quickly installing the bearing seat and performing a flip-assisted chamfering operation is provided at the top of the frame (3) and below the chamfering assembly (4). A side grinding assembly (5) for grinding and deburring the bottom edge of the bearing seat is provided at the top of the frame (3) and at the rear side of the flip-type clamping assembly (6).

2. The bearing seat processing device with flipping function according to claim 1 is characterized in that: The flip-type clamping assembly (6) comprises two upright frames (601) fixedly connected to the top of the frame body (3), the interiors of the two upright frames (601) are rotatably connected to a rotating seat (602) via a bearing, one side of the two rotating seats (602) is provided with a contoured cavity (603) in the shape of the bearing seat, the top of the frame body (3) is provided with a rotating drive mechanism for simultaneously driving the two rotating seats (602) to flip, the rotation center line of the rotating seat (602) and the inner ring center line of the bearing seat are in the same plane, one side of one of the upright frames (601) is provided with a locking assembly (8) for fixing the flipping position of the rotating seat (602), and a side fixing assembly (9) for auxiliary fixing of the bearing seat is provided between the two rotating seats (602).

3. The bearing seat processing device with flipping function according to claim 2 is characterized in that: The rotary drive mechanism comprises two vertical mounting seats (609) fixedly connected to the top of the frame (3); a synchronous shaft (608) is rotatably connected between the two vertical mounting seats (609) via a bearing; two ends and one side of the synchronous shaft (608) are respectively fixedly connected to a driving synchronous belt pulley 1 (604) and a driven synchronous belt pulley (605); one end of each of the two rotating seats (602) is fixedly connected to a driving synchronous belt pulley 2 (610) connected to the driving synchronous belt pulley 1 (604) via a synchronous belt transmission; a driving motor (607) is fixedly connected inside the frame (3); one end of the output shaft of the driving motor (607) is key-connected to a driving synchronous belt pulley (606) connected to the driven synchronous belt pulley (605) via a synchronous belt transmission.

4. The bearing seat processing device with flipping function according to claim 3 is characterized in that: The locking assembly (8) comprises a rotating plate (802) fixedly connected to one end of one of the rotating seats (602), pin holes (801) being provided at the top and bottom of the rotating plate (802), and an electric control lock (803) matching the pin hole (801) being fixedly connected to one side of one of the vertical frames (601).

5. The bearing seat processing device with flipping function according to claim 3 is characterized in that: The side fixing assembly (9) comprises blocking plates (901) respectively fixedly connected to the top and bottom of the two rotating seats (602), and four groups of blocking plates (901) form a secondary fixing state for the bearing seat, and a connecting plate (902) is fixedly connected between two adjacent blocking plates (901), and an arc-shaped magnetic plate (903) that generates magnetic attraction for the bearing seat is fixedly connected between the two connecting plates (902).

6. The bearing seat processing device with flipping function according to claim 1 is characterized in that: The chamfering assembly (4) comprises a chamfering motor (401) fixedly connected to the inside of the lifting frame (1); one end of the output shaft of the chamfering motor (401) passes through the lifting frame (1) and is equipped with a chamfering cutter head (402) via a coupling.

7. The bearing seat processing device with flipping function according to claim 1 is characterized in that: The lifting drive mechanism comprises a fixed partition (11) fixedly connected between the four groups of vertical poles (2), and a lifting electric push rod (10) is fixedly connected to the top of the fixed partition (11) for driving the lifting frame (1) to move in a vertical direction along the vertical poles (2).

8. The bearing seat processing device with flipping function according to claim 1 is characterized in that: A collection box (7) is placed on the top of the frame (3), and the collection box (7) is located below the flip-type clamping assembly (6).

9. The bearing seat processing device with flipping function according to claim 1 is characterized in that: The side grinding assembly (5) comprises a mounting frame (507) fixedly connected to the top of the frame body (3); two guide rails (508) are fixedly connected to the top of the mounting frame (507); a transverse plate (505) is slidably connected between the two guide rails (508) via a slide; a driving roller (504) and two transmission rollers (501) distributed in a triangular shape are rotatably connected to the top of the transverse plate (505); a grinding belt (502) is wound around the driving roller (504) and the two transmission rollers (501); a grinding motor (506) for driving the driving roller (504) to rotate is provided at the bottom of the transverse plate (505); a limit plate (503) for positioning the position of the grinding belt (502) is fixedly connected to the top of the transverse plate (505); and a transverse electric push rod (509) for driving the transverse plate (505) to move horizontally along the guide rails (508) is provided on one side of the mounting frame (507).

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