Metal material surface polishing device

Abstract

The application discloses a metal material surface grinding and polishing device and relates to the technical field of metal material processing. The metal material surface grinding and polishing device comprises a processing box, a grinding and polishing machine is arranged on the right side of the top of the processing box, and an adjusting mechanism is arranged in the processing box to realize synchronous operation of rotating and moving the bearing plate. The adjusting mechanism is driven by the driving part and cooperates with the transmission of the upper transmission assembly, so that the driving motor position of the pushing part is moved, the left and right positions are moved while the bearing plate is horizontally rotated, linkage operation can conveniently grind the edges and corners of the metal plate product, the distance between the grinding and polishing machine and the grinding position of the metal plate product can be adjusted synchronously, the processing efficiency is improved, the subsequent position adjustment process is reduced, and the metal plate product is more convenient to grind and polish.

Description

Technical Field

[0001] This invention relates to the field of metal material processing technology, specifically to a metal material surface grinding and polishing device. Background Technology

[0002] Multi-angle surface grinding and polishing devices for metal processing are a common processing tool in the machinery industry. They have a wide range of applications and can be used in metal, wood and stone fields simply by changing the grinding head. They can be used for grinding, polishing and carving.

[0003] The following problems still exist in the process of grinding and polishing existing metal materials:

[0004] Especially when processing sheet metal products, after cutting the sheet metal, there are problems with the edges and corners being rough or uneven. During the grinding process at the edges and corners, in order to ensure that the edges of the sheet metal are ground smoothly, it is necessary to place the sheet metal multiple times to achieve the grinding operation. When solving the placement problem, the grinding position is moved by rotating the sheet metal. However, the sheet metal will move along the curvature, causing the positional distance between the corner and the grinding and polishing machine to change, resulting in a cumbersome and inaccurate grinding operation.

[0005] Therefore, the present invention provides a device for grinding and polishing the surface of metal materials. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a metal material surface grinding and polishing device. This device solves the problem of unevenness or roughness at the edges and corners during the grinding process of cut metal plates. Furthermore, to ensure smooth grinding of the metal plate edges, multiple placement operations are required. While rotating the metal plate to move the grinding position, this movement causes changes in the distance between the corner and the grinding and polishing machine, resulting in a cumbersome and inaccurate grinding operation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a metal material surface grinding and polishing device, comprising a processing box, a grinding and polishing machine mounted on the right side of the top of the processing box for grinding the edges of the metal material, and an adjustment mechanism provided inside the processing box to enable synchronous operation of the rotation and movement of the support plate, wherein the adjustment mechanism includes:

[0008] The drive unit is located directly below the center of the support plate and includes a drive motor installed at the bottom of the processing box cavity. One end of the output shaft of the drive motor is fixedly mounted with a drive shaft via a coupling, and the drive shaft is fixed to the center of the bottom of the support plate.

[0009] The push unit is located on the right side inside the processing box and realizes the movement operation of the drive motor, so that the carrier plate moves synchronously during the rotation. While the drive unit is driving, the push unit is pushed by the transmission unit.

[0010] The locking part is located on the surface of the drive shaft and limits the rotation of the drive shaft through a pneumatic assembly, while also limiting the fixing part set inside the support plate.

[0011] Preferably, the pushing part further includes:

[0012] A rotating wheel has a rotating shaft installed at the center of its top surface, and the top of the rotating shaft rotates with the top of the inner cavity of the processing box. A rotating shaft is installed on the outer ring of the bottom surface of the rotating wheel.

[0013] The push ring is located below the rotating wheel, and the rotating shaft slides inside the push ring, allowing the push ring to move horizontally to the left and right under the limit of the limiting component. A push rod is installed on the left side of the push ring, one end of which is connected to the right side of the push block at the bottom of the drive motor. The bottom of the push block slides at the bottom of the processing box cavity through the sliding component.

[0014] Preferably, the limiting assembly includes a limiting rod installed on the right side of the push ring, and a limiting wheel is symmetrically and rotatably installed at the bottom of the inner cavity of the processing box, and the limiting wheel is in contact with the surface of the limiting rod.

[0015] Preferably, the sliding assembly includes a slide bar installed at the bottom of the push block, and a slide groove adapted to slide on the slide bar is provided at the bottom of the inner cavity of the processing box, and the slide groove is opened in the left and right directions.

[0016] Preferably, the transmission unit includes:

[0017] The drive shaft has two shafts, which are symmetrically arranged on the front and rear sides. Each shaft has a connecting plate rotatably connected to its surface. One end of each connecting plate rotates with the surface of the drive shaft. The surfaces of the drive shaft, the drive shaft, and the rotating shaft are connected by a transmission assembly to achieve synchronous rotation.

[0018] A square block is mounted on the top of the drive shaft via a rotating bearing, and a square groove with front and rear sides is opened on the top of the inner cavity of the processing box. The square block slides horizontally inside the square groove, and a telescopic spring is fixed between the opposite sides of the two square blocks.

[0019] Preferably, the transmission assembly includes a drive wheel mounted on the surface of the drive shaft, and both the drive shaft and the rotating shaft are fixedly connected to the surface of the drive wheel and the drive wheel, and the surfaces of the drive wheel and the drive wheel are connected by a transmission belt.

[0020] Preferably, the locking part further includes:

[0021] The support frame, mounted on the rear side of the push block and extending rearward, provides a support point for the pneumatic components and maintains synchronous movement with the drive motor.

[0022] A limiting tooth is installed on the output end of the pneumatic component, and a limiting gear is fixedly installed on the surface of the drive shaft. An extension frame extending to the rear is fixed on the top of the limiting tooth, and a jacking rod is installed on the front side of the extension frame at the upright position to achieve jacking contact with the fixed part.

[0023] Preferably, the pneumatic assembly includes a control cylinder mounted on a support frame, and the control cylinder has a piston rod slidably connected inside and fixed to the rear side of the limiting teeth.

[0024] Preferably, the fixing part includes:

[0025] The pressure plate is located in the placement groove at the top of the support plate and is placed horizontally on the front and rear sides. It extends into the side wall of the support plate through the protrusion and is fixed with the front mounting block.

[0026] The sliding rod has two sliding rods that are located on the side wall of the bearing plate and slide through it. The front end extends into the side wall of the bearing plate and is fixed with a rear mounting block, and the rear end extends to the outside and is fixed with a contact plate. The surface of the sliding rod is fitted with a return spring, and the two ends of the return spring are fixed to the opposite sides of the contact plate and the side wall of the bearing plate.

[0027] The front mounting block and the rear mounting block are engaged by a snap-fit ​​assembly when the contact plate is pressed.

[0028] Preferably, the snap-fit ​​assembly includes snap-fit ​​blocks equidistantly installed on the front side of the rear mounting block, and the rear side of the front mounting block is provided with snap-fit ​​slots that are adapted to snap-fit ​​the snap-fit ​​blocks.

[0029] Beneficial effects

[0030] This invention provides a device for grinding and polishing the surface of metal materials. Compared with the prior art, it has the following advantages:

[0031] (1) The metal material surface grinding and polishing device is equipped with an adjustment mechanism. By using the drive of the drive unit and the transmission of the transmission component, the push unit drives the drive motor to move, thereby realizing the movement of the left and right sides while the support plate rotates horizontally. The linkage operation not only facilitates the grinding of the corners of the metal plate product, but also allows for the synchronous adjustment of the distance between the area to be ground and the grinding and polishing machine, thereby improving the processing efficiency and reducing the subsequent position adjustment process, making the grinding and polishing of the metal plate product more convenient.

[0032] (2) The metal material surface grinding and polishing device is equipped with a pusher, which synchronously realizes the rotation of the rotating wheel under the rotation of the drive motor. When the pusher pushes and the distance between the drive motor and the rotating shaft changes, the transmission distance changes synchronously by adjusting the transmission part. This realizes the synchronous operation of the metal plate on the bearing plate rotating and moving horizontally before grinding and polishing, and effectively improves the efficiency of the adjustment in the early stage of grinding and polishing, so as to grind and remove burrs at the corners.

[0033] (3) The metal material surface grinding and polishing device is equipped with a locking part. After the metal plate product is adjusted to the required position, the pneumatic component pushes to realize the engagement of the limiting tooth with the limiting gear on the surface of the drive shaft. By driving the extension frame and the push rod to move, it makes contact with the contact plate and abuts it, so that the locking block on the rear mounting block engages with the locking groove on the rear mounting block. This realizes the synchronization of limiting the rotation position of the bearing plate and limiting the position of the metal plate product after clamping, improving the stability of the metal plate product during grinding and avoiding the problem of the metal plate product shifting itself when processing vibration. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0035] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0036] Figure 3 This is a three-dimensional structural diagram of the processing box of the present invention;

[0037] Figure 4 This is a three-dimensional structural diagram of the transmission part of the present invention;

[0038] Figure 5 For the present invention Figure 4 Partial three-dimensional structure diagram;

[0039] Figure 6 This is a three-dimensional structural diagram of the pushing part of the present invention;

[0040] Figure 7 This is a three-dimensional structural exploded view of the pushing part of the present invention;

[0041] Figure 8 This is a three-dimensional structural diagram of the locking part of the present invention;

[0042] Figure 9 This is a three-dimensional structural exploded view of the fixing part of the present invention;

[0043] Figure 10 For the present invention Figure 9 Enlarged view of the local structure at point A in the middle.

[0044] In the diagram: 1-Machining box, 2-Bearing plate, 3-Adjusting mechanism, 31-Drive motor, 32-Drive shaft, 33-Transmission part, 33-1-Transmission shaft, 33-2-Connecting plate, 33-3-Transmission assembly, 33-31-Drive wheel, 33-32-Transmission wheel, 33-33-Transmission belt, 33-4-Square block, 33-5-Square groove, 33-6-Telescopic spring, 34-Pneumatic assembly, 34-1-Control cylinder, 34-2-Piston rod, 35-Fixing part, 35-1-Pressure plate, 35-2-Front mounting block, 35-3- 35-4-Rear mounting block, 35-5-Contact plate, 35-6-Reset spring, 35-7-Snap-fit ​​assembly, 35-71-Snap block, 35-72-Snap groove, 41-Rotating wheel, 42-Rotating shaft, 43-Rotating shaft, 44-Push ring, 45-Limit assembly, 45-1-Limit rod, 45-2-Limiting wheel, 46-Sliding assembly, 46-1-Slide bar, 46-2-Slide groove, 47-Push rod, 48-Push block, 51-Support frame, 52-Limiting tooth, 53-Limiting gear, 54-Extension frame, 55-Push rod. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] This invention provides two technical solutions:

[0047] Example 1

[0048] Please see Figures 1-10 The device for grinding and polishing the surface of a metal material shown includes a processing box 1. A grinding and polishing machine is installed on the right side of the top of the processing box 1 for grinding the edges of the metal material. The grinding and polishing machine is electrically connected to an external power source and is a conventional grinding and polishing machine in the prior art. An adjustment mechanism 3 is provided inside the processing box 1 to enable the synchronous operation of the support plate 2 for rotation and movement. The adjustment mechanism 3 includes:

[0049] The drive unit is located directly below the center of the support plate 2 and includes a drive motor 31 installed at the bottom of the inner cavity of the processing box 1. The drive motor 31 is a three-phase asynchronous motor. The drive motor 31 is electrically connected to an external power supply and is operated by a human control panel. One end of the output shaft of the drive motor 31 is fixedly mounted with a drive shaft 32 through a coupling. The drive shaft 32 is fixed to the center of the bottom of the support plate 2. A through slot is provided at the top of the processing box 1, and the drive shaft 32 extends to the outside of the through slot and can slide and rotate relative to the through slot.

[0050] The pusher is located on the right side inside the processing box 1 and realizes the movement operation of the drive motor 31, so that the support plate 2 moves synchronously during rotation. While the driveer is driving, the pusher is pushed by the transmission unit 33.

[0051] The locking part is located on the surface of the drive shaft 32 and limits the rotation of the drive shaft 32 through the pneumatic component 34, while also limiting the fixing part 35 provided inside the support plate 2.

[0052] The system incorporates an adjustment mechanism 3, which, through the drive of the drive unit and the transmission assembly 33-3, moves the position of the drive motor 31 driven by the push unit. This allows the load-bearing plate 2 to rotate horizontally while simultaneously moving to the left or right. This coordinated operation not only facilitates the grinding of the edges and corners of the metal plate product but also allows for the simultaneous adjustment of the distance between the area to be ground and the grinding and polishing machine. This improves processing efficiency and reduces subsequent position adjustment steps, making the grinding and polishing of the metal plate product more convenient.

[0053] Please see Figures 1-3 and Figures 6-7 In one embodiment, the actuating unit further includes:

[0054] The rotating wheel 41 has a rotating shaft 42 installed at the center of its top surface, and the top of the rotating shaft 42 rotates with the top of the inner cavity of the processing box 1. A rotating shaft 43 is installed at the outer ring of the bottom surface of the rotating wheel 41.

[0055] The push ring 44 is located below the rotating wheel 41, and the rotating shaft 43 slides inside the push ring 44, so that the push ring 44 can move horizontally to the left and right under the limit of the limiting component 45. A push rod 47 is installed on the left side of the push ring 44, one end of which is connected to the right side of the push block 48 at the bottom of the drive motor 31. The bottom of the push block 48 slides at the bottom of the inner cavity of the processing box 1 through the sliding component 46.

[0056] The rotating wheel 41 is rotated synchronously with the drive motor 31 by the pusher part. When the distance between the drive motor 31 and the rotating shaft 42 changes due to the push rod 47, the transmission distance is changed synchronously by adjusting the transmission part 33. This achieves the synchronous operation of the metal plate on the bearing plate 2 rotating and moving horizontally before grinding and polishing, and effectively improves the efficiency of the adjustment in the early stage of grinding and polishing, so as to remove burrs at the corners.

[0057] Please see Figure 7 In this embodiment, the limiting component 45 includes a limiting rod 45-1 installed on the right side of the push ring 44, and a limiting wheel 45-2 is symmetrically and rotatably installed at the bottom of the inner cavity of the processing box 1, and the limiting wheel 45-2 is in contact with the surface of the limiting rod 45-1.

[0058] Please see Figure 3 and Figure 6 In this embodiment, the sliding assembly 46 includes a slide bar 46-1 installed at the bottom of the push block 48, and a slide groove 46-2 adapted to slide the slide bar 46-1 is provided at the bottom of the inner cavity of the processing box 1, and the slide groove 46-2 is opened in the left and right directions.

[0059] Please see Figures 2-5 In one embodiment, the transmission unit 33 includes:

[0060] Two drive shafts 33-1 are provided and are symmetrically arranged on the front and rear sides. Each drive shaft 33-1 is rotatably connected to a connecting plate 33-2. One end of each connecting plate 33-2 rotates with the surface of the drive shaft 32. The surfaces of the drive shaft 32, drive shaft 33-1 and rotating shaft 42 are connected by a transmission assembly 33-3 to achieve synchronous rotation.

[0061] A square block 33-4 is mounted on the top of the transmission shaft 33-1 via a rotating bearing, and a square groove 33-5 with a front-to-back direction is opened on the top of the inner cavity of the processing box 1. The square block 33-4 slides horizontally inside the square groove 33-5, and a telescopic spring 33-6 is fixed between the opposite sides of the two square blocks 33-4. The top of the transmission shaft 33-1 extends through into the interior of the square groove 33-5, and the square block 33-4 will not detach from the square groove 33-5.

[0062] When the bearing plate 2 rotates, the rotating shaft 42 rotates through the transmission assembly 33-3. The rotation of the rotating shaft 42 enables the rotating wheel 41 to drive the push ring 44 to move left and right. This movement drives the drive motor 31 to change position. As the position changes, the drive shaft 32 uses the connecting plate 33-2 to pull the two transmission shafts 33-1 closer to each other, and drives the square block 33-4 to move relative to each other in the square groove 33-5 and squeeze the telescopic spring 33-6. Conversely, when the metal plate product needs to be reset from the edge to the horizontal, the drive motor 31 rotates in the opposite direction, and the transmission shaft 33-1 will return to its initial state under the elastic reset of the telescopic spring 33-6.

[0063] Please see Figures 3-4 In this embodiment, the transmission assembly 33-3 includes a drive wheel 33-31 mounted on the surface of the drive shaft 32, and the drive wheel 33-32 is fixedly connected to the surfaces of both the transmission shaft 33-1 and the rotating shaft 42. The surfaces of the drive wheel 33-31 and the drive wheel 33-32 are connected by a transmission belt 33-33.

[0064] Example 2

[0065] Further improvements were made based on Example 1:

[0066] Please see Figures 2-3 and Figures 8-10 The locking part also includes:

[0067] The support frame 51 is mounted on the rear side of the push block 48 and extends rearward to provide a support point for the pneumatic assembly 34 and maintain synchronous movement with the drive motor 31.

[0068] A limiting tooth 52 is installed on the output end of the pneumatic assembly 34, and a limiting gear 53 is fixedly installed on the surface of the drive shaft 32. When the limiting tooth 52 meshes with the surface of the limiting gear 53, the rotation of the drive shaft 32 is limited. An extension frame 54 extending to the rear is fixed on the top of the limiting tooth 52. A push rod 55 is installed on the front side of the vertical part of the extension frame 54 and pushes the fixed part 35 into contact.

[0069] Please see Figure 8 In one embodiment, the pneumatic assembly 34 includes a control cylinder 34-1 mounted on a support frame 51. The control cylinder 34-1 is connected to an external air circuit and is operated by a human-operated control panel. A piston rod 34-2 is slidably connected inside the control cylinder 34-1 and fixed to the rear side of the limiting tooth 52.

[0070] Please see 9- Figure 10 In one embodiment, the fixing part 35 includes:

[0071] The pressure plate 35-1 is located in the placement groove at the top of the support plate 2 and is placed horizontally on the front and rear sides. It extends into the side wall of the support plate 2 through the protrusion and is fixed with the front mounting block 35-2. A pull handle is installed on the top of the pressure plate 35-1.

[0072] The sliding rod 35-3 has two sliding rods that are located on the side wall of the bearing plate 2 and slide through it. The front end extends into the side wall of the bearing plate 2 and is fixed with a rear mounting block 35-4. The rear end extends to the outside and is fixed with a contact plate 35-5. The surface of the sliding rod 35-3 is fitted with a return spring 35-6. The two ends of the return spring 35-6 are fixed to the opposite sides of the contact plate 35-5 and the side wall of the bearing plate 2.

[0073] The front mounting block 35-2 and the rear mounting block 35-4 are engaged by the snap-fit ​​assembly 35-7 when the contact plate 35-5 is pressed, so that the pressure plate 35-1 presses the metal plate product and prevents it from moving. When the support plate 2 rotates, the contact plate 35-5 tilts with the horizontal angle of the support plate 2, while the push rod 55 remains flush with the processing box 1. The push rod 55 moves forward from the rear side of the processing box 1, and there is a distance between the push point of the push rod 55 and the processing box 1. Maintaining this distance can prevent the contact plate 35-5 from colliding with the push rod 55 when the support plate 2 rotates from 0° to 90°. When a limit operation is required, the push rod 55 and the limit tooth 52 move synchronously by controlling the drive of the cylinder 34-1. At this time, the push rod 55 will contact the contact plate 35-5 and move the locking block 35-71 on the rear mounting block 35-4 to engage with the locking groove 35-72 on the rear mounting block 35-4.

[0074] Please see Figure 10 In this embodiment, the snap-fit ​​assembly 35-7 includes snap-fit ​​blocks 35-71 that are equidistantly installed on the front side of the rear mounting block 35-4, and the rear side of the front mounting block 35-2 is provided with snap-fit ​​grooves 35-72 that are adapted to snap-fit ​​the snap-fit ​​blocks 35-71. When the snap-fit ​​blocks 35-71 and the snap-fit ​​grooves 35-72 are snap-fitted, the metal plate product is fixed during processing.

[0075] The device features a locking mechanism. After the metal plate is adjusted to the desired position, the pneumatic component 34 pushes the limiting gear 52 to engage with the limiting gear 53 on the surface of the drive shaft 32. This engages with the extension frame 54 and the push rod 55, causing them to contact and abut against the contact plate 35-5. This allows the locking block 35-71 on the rear mounting block 35-4 to engage with the locking groove 35-72 on the rear mounting block 35-4. This achieves simultaneous limiting of the rotational position of the bearing plate 2 and the clamping position of the metal plate, improving the stability of the metal plate during grinding and preventing the metal plate from shifting due to vibration during processing.

[0076] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0077] During operation, first lift the pressure plate 35-1 upwards, then place the metal plate product to be processed in the placement groove of the bearing plate 2, and move the edge of the metal plate product to the grinding and polishing machine to perform edge grinding operation.

[0078] Simultaneously, when edge grinding is required, the drive motor 31 is first started, which drives the drive shaft 32 to rotate. The drive shaft 32 then drives the bearing plate 2 to rotate, thus achieving the rotation of the metal plate product. Next, as the drive shaft 32 rotates, the drive wheel 33-31, transmission belt 33-33, and transmission wheel 33-32 drive the rotating shaft 42 to rotate. At this time, the rotating shaft 42 drives the rotating wheel 41 to rotate. Meanwhile, the rotating shaft 43 on the rotating wheel 41 slides inside the pushing ring 44, causing the pushing ring 44 to be positioned at the limit wheel. The sliding of 45-2 and limit rod 45-1 enables the push rod 47 to perform a pushing operation, which in turn drives the push block 48 and drive motor 31 to move. When the distance between drive motor 31 and rotating shaft 42 changes, the transmission distance changes synchronously through the adjustment of transmission part 33. Drive shaft 32 uses connecting plate 33-2 to pull the two transmission shafts 33-1 closer to each other, and drives square block 33-4 to move relative to each other in square groove 33-5 and squeeze telescopic spring 33-6 until the corner of the process rotates to the grinding and polishing machine.

[0079] After rotating to a suitable angle, the control cylinder 34-1 is activated, which drives the piston rod 34-2 to move. The piston rod 34-2 drives the limiting tooth 52 to move until the limiting tooth 52 meshes with the limiting gear 53 on the surface of the drive shaft 32. By driving the extension frame 54 and the push rod 55 to move, they come into contact with and abut against the contact plate 35-5. This causes the locking block 35-71 on the rear mounting block 35-4 to engage with the locking groove 35-72 on the rear mounting block 35-4, thereby achieving synchronization of limiting the rotation position of the bearing plate 2 and limiting the position of the metal plate product after clamping.

[0080] Finally, the corners of the metal sheet product are polished by starting the polishing machine.

[0081] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0082] 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 metal material surface grinding and polishing device, comprising a processing box (1), wherein a grinding and polishing machine is installed on the right side of the top of the processing box (1) for grinding the edges of metal materials, characterized in that: The processing box (1) is equipped with an adjustment mechanism (3) to enable the bearing plate (2) to rotate and move synchronously. The adjustment mechanism (3) includes: The drive unit is located directly below the center of the support plate (2) and includes a drive motor (31) installed at the bottom of the inner cavity of the processing box (1). One end of the output shaft of the drive motor (31) is fixedly mounted with a drive shaft (32) through a coupling, and the drive shaft (32) is fixed to the center of the bottom of the support plate (2). The push unit is located on the right side inside the processing box (1) and realizes the movement operation of the drive motor (31), so that the carrier plate (2) moves synchronously during the rotation. While the drive unit drives, the push unit is pushed by the transmission unit (33). The locking part is located on the surface of the drive shaft (32) and limits the rotation of the drive shaft (32) through the pneumatic assembly (34), while limiting the fixing part (35) provided inside the support plate (2); The propulsion unit also includes: A rotating wheel (41) has a rotating shaft (42) installed at the center of its top surface, and the top of the rotating shaft (42) is rotatably connected to the top of the inner cavity of the processing box (1). A rotating shaft (43) is installed at the outer ring of the bottom surface of the rotating wheel (41). The push ring (44) is located below the rotating wheel (41), and the rotating shaft (43) slides inside the push ring (44), so that the push ring (44) can move horizontally to the left and right under the limit of the limiting component (45). A push rod (47) is installed on the left side of the push ring (44), one end of which is connected to the right side of the push block (48) at the bottom of the drive motor (31), and the bottom of the push block (48) slides at the bottom of the processing box (1) through the sliding component (46). The transmission unit (33) includes: Two drive shafts (33-1) are provided and are symmetrically arranged on the front and rear sides. Each drive shaft (33-1) is rotatably connected to a connecting plate (33-2). One end of each connecting plate (33-2) rotates with the surface of the drive shaft (32). The surfaces of the drive shaft (32), drive shaft (33-1), and rotating shaft (42) are connected by a transmission assembly (33-3) to achieve synchronous rotation. A square block (33-4) is mounted on the top of the transmission shaft (33-1) via a rotating bearing, and a square groove (33-5) with a front-to-back direction is opened on the top of the inner cavity of the processing box (1). The square block (33-4) slides horizontally inside the square groove (33-5), and a telescopic spring (33-6) is fixed between the opposite sides of the two square blocks (33-4).

2. The metal material surface grinding and polishing device according to claim 1, characterized in that: The limiting assembly (45) includes a limiting rod (45-1) installed on the right side of the push ring (44), and a limiting wheel (45-2) is symmetrically and rotatably installed at the bottom of the inner cavity of the processing box (1), and the limiting wheel (45-2) is in contact with the surface of the limiting rod (45-1).

3. The metal material surface grinding and polishing device according to claim 1, characterized in that: The sliding assembly (46) includes a slide bar (46-1) installed at the bottom of the push block (48), and a slide groove (46-2) adapted to slide the slide bar (46-1) is provided at the bottom of the inner cavity of the processing box (1), and the slide groove (46-2) is opened in the left and right directions.

4. The metal material surface grinding and polishing device according to claim 1, characterized in that: The transmission assembly (33-3) includes a drive wheel (33-31) mounted on the surface of the drive shaft (32), and the drive wheel (33-32) is fixedly connected to the surfaces of both the drive shaft (33-1) and the rotating shaft (42). The surfaces of the drive wheel (33-31) and the drive wheel (33-32) are connected by a transmission belt (33-33).

5. The metal material surface grinding and polishing device according to claim 1, characterized in that: The locking part further includes: A support frame (51), mounted on the rear side of the push block (48) and extending rearward, is used to provide a support point for the pneumatic assembly (34) and maintain synchronous movement with the drive motor (31); A limiting tooth (52) is installed on the output end of the pneumatic assembly (34), and a limiting gear (53) is fixedly installed on the surface of the drive shaft (32). An extension frame (54) extending to the rear is fixed on the top of the limiting tooth (52). A push rod (55) is installed on the front side of the extension frame (54) at the vertical position and pushes the fixed part (35) into contact.

6. The metal material surface grinding and polishing device according to claim 5, characterized in that: The pneumatic assembly (34) includes a control cylinder (34-1) mounted on a support frame (51), and the control cylinder (34-1) has a piston rod (34-2) slidably connected inside and fixed to the rear side of a limiting tooth (52).

7. The metal material surface grinding and polishing device according to claim 1, characterized in that: The fixing part (35) includes: The pressure plate (35-1) is located in the placement groove at the top of the support plate (2) and is placed horizontally in the front and back sides. It extends into the side wall of the support plate (2) through the protrusion and is fixed with the front mounting block (35-2). The sliding rod (35-3) has two sliding sides that are located on the side wall of the bearing plate (2). The front end extends into the side wall of the bearing plate (2) and is fixed with a rear mounting block (35-4). The rear end extends to the outside and is fixed with a contact plate (35-5). The surface of the sliding rod (35-3) is fitted with a return spring (35-6). The two ends of the return spring (35-6) are fixed to the opposite sides of the contact plate (35-5) and the side wall of the bearing plate (2). The front mounting block (35-2) and the rear mounting block (35-4) are engaged by the snap-fit ​​assembly (35-7) when the contact plate (35-5) is pressed.

8. The metal material surface grinding and polishing device according to claim 7, characterized in that: The snap-fit ​​assembly (35-7) includes snap-fit ​​blocks (35-71) that are equidistantly installed on the front side of the rear mounting block (35-4), and the rear side of the front mounting block (35-2) is provided with snap-fit ​​slots (35-72) that are adapted to snap-fit ​​the snap-fit ​​blocks (35-71).

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