An inner lining supported wheel hub grinding robot and grinding method

Abstract

The present invention relates to the technical field related to grinding processing, and specifically relates to a wheel hub grinding robot with inner lining support and a grinding method. The wheel hub grinding robot with inner lining support includes a support seat and a mounting frame fixed on the support seat, and further includes: a vertical shaft rotatably installed on the mounting frame, and a bearing tray is fixed at one end of the vertical shaft away from the mounting frame. The bearing tray is used for bearing the wheel hub to be processed, and an expansion type fastening mechanism for supporting and fixing the wheel hub is arranged on the vertical shaft; through the symmetrical arrangement of two protective covers, after the grinding wheel is driven to contact the wheel hub, since the first transverse movement seat and the second transverse movement seat are connected by two groups of elastic connection mechanisms, the first transverse movement seat and the second transverse movement seat can perform relative movement, prompting the follower mechanism to drive the two protective covers to perform a closing action, so that the two protective covers cover the wheel hub and the grinding disc, achieving an enclosed dust removal effect under the condition of not affecting the clamping of the wheel hub.

Description

Technical Field

[0001] The present invention relates to the technical field related to grinding processing, and in particular to a liner-supported wheel hub grinding robot and a grinding method. Background Art

[0002] The wheel hub is an important component of a car. It usually refers to the cylindrical metal part that supports the inner profile of the tire. The center is installed on the axle. Its main function is to connect the wheel and the body of the car, and it bears the responsibility of bearing weight, transmitting torque and decorative purposes.

[0003] In wheel hub production, grinding is an essential processing process. During the grinding process, a large amount of debris will be generated. Due to the light weight of the debris and the high-speed rotation of the grinding workpiece, the debris will fly everywhere and eventually float in the air, making the processing environment harsh and causing physical harm to workers who are in this working environment for a long time.

[0004] In this regard, some grinding and processing equipment are usually equipped with dust collection equipment on top. In order to avoid affecting the clamping work of the wheel hub, these dust collection equipment are usually installed in a ceiling-mounted manner. When working, the equipment has limited dust collection effect. Due to poor dust collection effect, debris is often still scattered into the environment, or the equipment needs to have sufficient power to ensure the dust collection effect, making it difficult to achieve the ideal use effect. Summary of the Invention

[0005] The object of the present invention is to provide a liner-supported wheel hub grinding robot and a grinding method to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A wheel hub grinding robot supported by an inner liner includes a support and a mounting frame fixed to the support, and further includes:

[0008] A vertical shaft is rotatably mounted on the mounting frame, and a bearing tray is fixed to one end of the vertical shaft away from the mounting frame, the bearing tray is used to support the wheel hub to be processed, and an expansion fastening mechanism is provided on the vertical shaft for supporting and fixing the wheel hub;

[0009] A first transverse seat and a second transverse seat are slidably mounted on the support and connected to each other via two sets of elastic connection mechanisms. The second transverse seat is connected to a threaded drive mechanism mounted on the support, and the threaded drive mechanism can drive the first transverse seat and the second transverse seat to move along the length direction of the support.

[0010] Wherein, a grinding wheel is rotatably mounted on the first transverse moving base, and a steering transmission mechanism is connected between the rotating shaft of the grinding wheel and the vertical shaft. The steering transmission mechanism can cause the grinding wheel and the hub located on the bearing tray to rotate synchronously and in different directions;

[0011] There are two protective covers movably arranged on the support. The two protective covers are connected to the first transverse moving base and the second transverse moving base through a follow-up mechanism installed on the support. The follow-up mechanism is triggered when the first transverse moving base and the second transverse moving base move relative to each other, and drives the two protective covers to approach and close together.

[0012] As a further scheme of the present invention: the elastic connection mechanism includes a vertical plate fixed on the second transverse moving base, a guide rod fixed on the vertical plate, and a cylindrical spring sleeved on the outer periphery of the guide rod;

[0013] Wherein, a vertical arm is also fixedly installed on the first transverse moving base. The guide rod passes through the vertical arm and is slidably connected to the vertical arm. One end of the cylindrical spring is connected to the vertical arm, and the other end is connected to the vertical plate. The vertical arm is connected to the follow-up mechanism.

[0014] As a further scheme of the present invention: the follow-up mechanism includes a guiding structure arranged on the support and connecting the two protective covers, and two sets of sleeved components connected to the guiding structure. The sleeved components are arranged on the vertical arm and are also connected to the vertical plate.

[0015] As a further scheme of the present invention: the guiding structure includes two first guide rails fixedly installed on the support in a counter-supporting manner, and a second guide rail fixed on the support and perpendicular to the two first guide rails. Two second sliders are slidably and counter-supportingly fitted in the second guide rail. The second sliders are fixedly connected to the protective cover through a connecting arm. A first slider is slidably fitted in the first guide rail, and the first slider is connected to the sleeved component.

[0016] As a further scheme of the present invention: the sleeved component includes a follow-up block slidably arranged on the vertical arm, a horizontal cylinder fixed on the side of the follow-up block, and a horizontal rod slidably sleeved with the horizontal cylinder. One end of the horizontal rod away from the follow-up block is fixed to the first slider;

[0017] Wherein, a second inclined rod is also arranged between the horizontal rod and the connecting arm. One end of the second inclined rod is rotatably connected to the horizontal rod, and the other end is rotatably connected to the connecting arm. A first inclined rod is arranged between the follow-up block and the vertical plate. Both ends of the first inclined rod are respectively rotatably connected to the vertical plate and the follow-up block.

[0018] As a further solution of the present invention: The expansion type fastening mechanism includes a spreading structure installed on the vertical shaft and a screwing boosting assembly connected to the spreading structure. The screwing boosting assembly can move axially along the vertical shaft and prompt the spreading structure to perform expansion and retraction actions.

[0019] As a further solution of the present invention: The spreading structure includes a plurality of arms fixedly arranged on the vertical shaft at equal intervals along the circumference and a plurality of connecting plates respectively slidably arranged on the plurality of arms. A support rod is fixedly arranged on the upper part of the connecting plate, and a connecting rod is hinged to the lower part. The connecting rod is connected to the screwing boosting assembly.

[0020] As a further solution of the present invention: The screwing boosting assembly includes a first sleeve and a second sleeve sleeved on the vertical shaft. The first sleeve and the second sleeve are rotationally connected, and the first sleeve is threadedly connected to the vertical shaft. The second sleeve is slidably connected to the vertical shaft. One end of the connecting rod away from the connecting plate is rotationally connected to the second sleeve;

[0021] Wherein, a strip-shaped through groove is axially arranged on the vertical shaft, and a column is slidably arranged in the strip-shaped through groove. Both ends of the column are fixed to the inner wall of the second sleeve.

[0022] As a further solution of the present invention: A first driving motor is installed at the bottom of the mounting frame. The vertical shaft is connected to the output end of the first driving motor. The direction-changing transmission mechanism includes a first gear fixed on the vertical shaft and a second gear rotatably installed on the mounting frame and meshing with the first gear;

[0023] Wherein, a first cross arm and a second cross arm are further arranged between the rotation shafts of the second gear and the grinding wheel. The first ends of the first cross arm and the second cross arm are rotationally connected through a connecting shaft, and the second ends are respectively rotationally connected to the rotation shafts of the second gear and the grinding wheel. And the connecting shaft is also connected to the rotation shafts of the second gear and the grinding wheel through a first transmission belt and a second transmission belt respectively.

[0024] A hub grinding method, using the hub grinding robot as described above, includes the following steps:

[0025] Step 1, place the hub to be processed on the bearing tray;

[0026] Step 2, start the screw driving mechanism to work forward, drive the first transverse seat and the second transverse seat to move simultaneously close to the mounting frame, and make the grinding wheel contact the hub;

[0027] Step 3, the screw driving mechanism continues to work forward, so that the second transverse seat moves closer to the first transverse seat, the elastic connection mechanism is triggered, and the follower mechanism is prompted to make the two protective covers close together;

[0028] Step 4: The first driving motor starts, drives the hub to rotate through the vertical shaft, and drives the grinding wheel to rotate synchronously but in different directions through the steering transmission mechanism;

[0029] Step 5: After grinding, the threaded driving mechanism works in reverse, and the two protective covers and the grinding wheel are reset in sequence, and the hub that has completed the grinding process is removed from the bearing tray.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] Through the symmetrical arrangement of the two protective covers, after the grinding wheel is driven to contact the hub, since the first transverse seat and the second transverse seat are connected by two sets of elastic connection mechanisms, relative movement can occur between the first transverse seat and the second transverse seat, thereby prompting the follow-up mechanism to drive the two protective covers to perform a closing action, so that the two protective covers cover the hub and the grinding disc. Under the condition of not affecting the clamping of the hub, an enclosed dust removal effect is achieved. Compared with the dust removal equipment installed on the ceiling, the comprehensiveness of dust absorption can be effectively improved, and the requirement for dust absorption power is relatively low;

[0032] Secondly, during the grinding process, the steering transmission mechanism is used to achieve the effect of synchronous but different-direction rotation of the hub and the grinding wheel. Compared with the driving mode of only driving the hub to rotate or only driving the grinding wheel to rotate, the efficiency of the grinding process can be effectively improved;

[0033] In addition, when fixing the hub, the staff only needs to twist the first kit, and then multiple support rods can perform an expansion action to support and fix the hub. Therefore, it is not necessary for the staff to fix at multiple points along the circumference of the hub in sequence, simplifying the clamping work of the hub. Description of the Drawings

[0034] Figure 1 Isometric view of an embodiment of a hub grinding robot with an inner lining support.

[0035] Figure 2 Partial cross-sectional view of an embodiment of a hub grinding robot with an inner lining support.

[0036] Figure 3 Structural schematic diagram of an embodiment of a hub grinding robot with an inner lining support.

[0037] Figure 4 Structural schematic diagram of an embodiment of a hub grinding robot with an inner lining support from another angle.

[0038] Figure 5 Structural schematic diagram of an embodiment of a hub grinding robot with an inner lining support from another angle.

[0039] Figure 6 Schematic structural diagram of an embodiment of a wheel grinding robot supported by a lining from another angle.

[0040] Figure 7 For Figure 6 Enlarged structural view of part A in

[0041] Figure 8 Schematic structural diagram of a support in an embodiment of a wheel grinding robot supported by a lining.

[0042] Figure 9 Schematic connection diagram of a vertical shaft and a grinding wheel in an embodiment of a wheel grinding robot supported by a lining.

[0043] Figure 10 Exploded view of the structure of an expansion fastening mechanism in an embodiment of a wheel grinding robot supported by a lining.

[0044] Figure 11 Schematic structural diagram of an elastic connection mechanism in an embodiment of a wheel grinding robot supported by a lining.

[0045] Figure 12 Exploded view of the structure of a follow-up mechanism in an embodiment of a wheel grinding robot supported by a lining.

[0046] In the figure: 1, support; 2, mounting frame; 3, first driving motor; 4, vertical shaft; 401, strip-shaped through groove; 5, bearing tray; 6, support arm; 7, connecting plate; 8, support rod member; 9, connecting rod; 10, column; 11, first set; 12, second set; 13, second driving motor; 14, first gear; 15, second gear; 16, first cross arm; 17, second cross arm; 18, connecting shaft; 19, first transmission belt; 20, second transmission belt; 21, first transverse moving seat; 22, second transverse moving seat; 23, boosting block; 24, vertical plate; 25, guide rod; 26, cylindrical spring; 27, vertical arm; 28, grinding wheel; 29, follow-up block; 30, first inclined rod; 31, horizontal cylinder; 32, horizontal rod; 33, second inclined rod; 34, first guide rail; 3401, first slider; 35, second guide rail; 3501, second slider; 36, connecting arm; 37, protective cover. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] In addition, the elements in the present invention are referred to as "fixed to" or "disposed on" another element, which can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0049] Please refer to Figures 1 - 12 , in an embodiment of the present invention, a wheel hub grinding robot with a lining support includes a support 1 and a mounting frame 2 fixed to the support 1, and further includes:

[0050] A vertical shaft 4 is rotatably mounted on the mounting frame 2, and a bearing tray 5 is fixed to one end of the vertical shaft 4 away from the mounting frame 2. The bearing tray 5 is used to hold the wheel hub to be processed, and an expansion type fastening mechanism for supporting and fixing the wheel hub is provided on the vertical shaft 4;

[0051] A first transverse seat 21 and a second transverse seat 22 are slidably arranged on the support 1, and the two are connected by two sets of elastic connection mechanisms. The second transverse seat 22 is connected to a threaded driving mechanism installed on the support 1, and the threaded driving mechanism can drive the first transverse seat 21 and the second transverse seat 22 to move along the length direction of the support 1;

[0052] Wherein, a grinding wheel 28 is rotatably mounted on the first transverse seat 21, and the rotating shaft of the grinding wheel 28 is connected to the vertical shaft 4 through a direction changing transmission mechanism. The direction changing transmission mechanism can cause the grinding wheel 28 and the wheel hub located on the bearing tray 5 to rotate synchronously and in different directions;

[0053] Two protective covers 37 are movably arranged on the support 1. The two protective covers 37 are connected to the first transverse seat 21 and the second transverse seat 22 through a follow-up mechanism installed on the support 1. The follow-up mechanism is triggered when the first transverse seat 21 and the second transverse seat 22 move relative to each other, and drives the two protective covers 37 to approach and close together.

[0054] It should be noted that during operation, the hub to be processed is placed on the bearing tray 5, and the hub is fixed by the expansion type fastening mechanism. Then, the threaded drive mechanism operates to drive the second transverse seat 22 to slide along the length direction of the support 1. Correspondingly, the second transverse seat 22 drives the first transverse seat 21 to move together through the elastic connection mechanism, so that the grinding wheel 28 approaches the hub. When the grinding wheel 28 contacts the hub, the first transverse seat 21 is limited and remains stationary. As the second transverse seat 22 continues to move, relative movement occurs between the second transverse seat 22 and the first transverse seat 21. At this time, the elastic connection mechanism is triggered to prompt the movement of the follow-up mechanism, and the follow-up mechanism drives the two protective covers 37 to move closer to each other until the two protective covers 37 are butted. The two protective covers 37 can then cover the hub and the grinding wheel 28. Subsequently, through the direction-changing transmission mechanism, the grinding wheel 28 and the hub located on the bearing tray 5 rotate synchronously and in different directions, thereby realizing the grinding function.

[0055] Furthermore, during the grinding process, the direction-changing transmission mechanism is used to achieve the effect of synchronous but different-direction rotation of the hub and the grinding wheel 28. Compared with the single-sided drive mode (i.e., only driving the hub to rotate or only driving the grinding wheel 28 to rotate), the grinding efficiency can be effectively improved.

[0056] Secondly, before the grinding starts, the two protective covers 37 can move closer to each other and close together. Therefore, during the grinding process, the two protective covers 37 can cover the hub and the grinding wheel 28 to form a protective housing, preventing the debris generated during the grinding process from splashing everywhere and causing damage to the bodies of the staff.

[0057] In addition, it should be emphasized that a plurality of air extraction pipes (not labeled in the figure) are provided on the protective cover 37, and the air extraction pipes are connected to the air inlet of an external air pump. During operation, when the external air pump is started, the air extraction pipes can absorb and transfer the debris generated inside the two protective covers 37 to ensure the cleanliness of the processing environment.

[0058] Please refer to again Figure 11 , the elastic connection mechanism includes a vertical plate 24 fixed to the second transverse seat 22, a guide rod 25 fixed to the vertical plate 24, and a cylindrical spring 26 sleeved on the outer periphery of the guide rod 25. A vertical arm 27 is also fixedly installed on the first transverse seat 21. The guide rod 25 passes through the vertical arm 27 and is slidably connected to the vertical arm 27. One end of the cylindrical spring 26 is connected to the vertical arm 27, and the other end is connected to the vertical plate 24. The vertical arm 27 is connected to the follow-up mechanism.

[0059] Specifically, there are two sets of the screw driving mechanisms, which include a screw rod rotatably installed on the support 1 and a second driving motor 13 installed on the support 1. The screw rod is connected to the output end of the second driving motor 13;

[0060] Furthermore, a boosting block 23 is fixedly installed on the second transverse movement seat 22. The screw rod penetrates through the boosting block 23, and the boosting block 23 is in threaded connection with the screw rod. During operation, the second driving motor 13 drives the screw rod to rotate forward. Then, the boosting block 23 can be in threaded connection with the screw rod. Immediately afterwards, the boosting block 23 can drive the second transverse movement seat 22 to move along the length direction of the support 1. Before the grinding wheel 28 contacts the hub, the second transverse movement seat 22 can drive the first transverse movement seat 21 to move together through the cylindrical spring 26;

[0061] After the grinding wheel 28 contacts the hub, the first transverse movement seat 21 will be limited and stop moving. At this time, the second transverse movement seat 22 gradually approaches the first transverse movement seat 21. The guide rod 25 slides on the vertical arm 27, the cylindrical spring 26 is compressed, and the follow-up mechanism is triggered, prompting the two protective covers 37 to approach and close together to play a safety protection role.

[0062] Please refer to again Figure 11 And Figure 12 , the follow-up mechanism includes a guiding structure arranged on the support 1 and connecting the two protective covers 37 and two sets of nesting components connected to the guiding structure. The nesting components are arranged on the vertical arm 27 and are also connected to the vertical plate 24. The guiding structure includes two first guide rails 34 symmetrically and fixedly installed on the support 1 and a second guide rail 35 fixed to the support 1 and perpendicular to the two first guide rails 34. Two second sliders 3501 are symmetrically and slidably fitted in the second guide rail 35. The second sliders 3501 are fixedly connected to the protective cover 37 through a connecting arm 36. A first slider 3401 is slidably fitted in the first guide rail 34. The first slider 3401 is connected to the nesting component. The nesting component includes a follower block 29 slidably arranged on the vertical arm 27, a horizontal cylinder 31 fixed to the side of the follower block 29, and a horizontal rod 32 slidably sleeved with the horizontal cylinder 31. One end of the horizontal rod 32 away from the follower block 29 is fixed to the first slider 3401;

[0063] Wherein, a second inclined rod 33 is further provided between the horizontal rod 32 and the connecting arm 36. One end of the second inclined rod 33 is rotatably connected to the horizontal rod 32, and the other end is rotatably connected to the connecting arm 36. A first inclined rod 30 is provided between the follower block 29 and the vertical plate 24. Both ends of the first inclined rod 30 are respectively rotatably connected to the vertical plate 24 and the follower block 29.

[0064] When the first transverse movement seat 21 and the second transverse movement seat 22 slide simultaneously along the length direction of the support 1, the horizontal cylinder 31 slides on the horizontal rod 32. During the relative movement between the first transverse movement seat 21 and the second transverse movement seat 22, the vertical plate 24 will push the follower block 29 to slide upward on the vertical arm 27 through the first inclined rod 30. Correspondingly, the follower block 29 drives the first slider 3401 to slide upward in the first guide rail 34 through the horizontal cylinder 31 and the horizontal rod 32. The horizontal rod 32 drives the connecting arm 36 through the second inclined rod 33 to drive the second slider 3501 to slide towards the midpoint direction of the second guide rail 35 in the second guide rail 35. Then, the two protective covers 37 perform a closing action to form a housing that can cover the hub and the grinding wheel 28, playing a safety protection role during the grinding process.

[0065] After grinding is completed, the second driving motor 13 will drive the threaded rod to rotate in the reverse direction. Then, the second transverse movement seat 22 moves away from the mounting bracket 2. In the previous stroke, the cylindrical spring 26 gradually rebounds and resets, and the first transverse movement seat 21 and the grinding wheel 28 remain stationary. The two protective covers 37 open and reset. Subsequently, the second transverse movement seat 22 drives the first transverse movement seat 21 to reset together.

[0066] Please refer to again Figure 7 and Figure 10The expansion-type fastening mechanism includes an expansion support structure mounted on the vertical shaft 4 and a screw-assist assembly connected to the expansion support structure. The screw-assist assembly is movable along the axial direction of the vertical shaft 4 and prompts the expansion support structure to perform expansion and contraction actions. The expansion support structure includes a plurality of support arms 6 fixed to the vertical shaft 4 at equal intervals along the circumference and a plurality of connecting plates 7 slidingly mounted on the plurality of support arms 6. The upper portion of the connecting plate 7 is fixed with a support rod 8, and the lower portion is hinged with a connecting rod 9, which is connected to the screw-assist assembly. The screw-assist assembly includes a first set 11 and a second set 12 mounted on the vertical shaft 4. The first set 11 and the second set 12 are rotatably connected, and the first set 11 is threadedly connected to the vertical shaft 4, and the second set 12 is slidably connected to the vertical shaft 4. The end of the connecting rod 9 away from the connecting plate 7 is rotatably connected to the second set 12. A strip-shaped through slot 401 is axially provided on the vertical shaft 4 , and a column 10 is slidably provided in the strip-shaped through slot 401 . Both ends of the column 10 are fixed to the inner wall of the second sleeve 12 .

[0067] During the preparation work, the wheel hub to be processed is placed on the supporting tray 5. Then, the staff uses a tool (wrench) to rotate the first kit 11 so that the first kit 11 is threadedly engaged with the vertical shaft 4. Under the guidance of the column 10 and the strip-shaped through groove 401, the first kit 11 pushes the second kit 12 to slide upward along the axial direction of the vertical shaft 4. Correspondingly, the second kit 12 slides away from the vertical shaft 4 on the support arm 6 through the connecting plate 7. The multiple support rods 8 perform an expansion action to support the wheel hub lining and realize the fixing function of the wheel hub, thereby facilitating subsequent polishing work.

[0068] In summary, when fixing the wheel hub, the staff only needs to screw the first kit 11 to make the multiple support rods 8 expand and support and fix the wheel hub. Therefore, the staff does not need to perform multiple fixations along the circumference of the wheel hub in sequence, which simplifies the work process.

[0069] Please refer again Figure 9, a first driving motor 3 is installed at the bottom of the mounting frame 2, the vertical shaft 4 is connected to the output end of the first driving motor 3, and the steering transmission mechanism includes a first gear 14 fixed on the vertical shaft 4 and a second gear 15 rotatably installed on the mounting frame 2 and meshing with the first gear 14. A first cross arm 16 and a second cross arm 17 are further provided between the rotating shafts of the second gear 15 and the grinding wheel 28. The first ends of the first cross arm 16 and the second cross arm 17 are rotatably connected by a connecting shaft 18, and the second ends are respectively rotatably connected to the rotating shafts of the second gear 15 and the grinding wheel 28, and the connecting shaft 18 is also connected to the rotating shafts of the second gear 15 and the grinding wheel 28 through a first transmission belt 19 and a second transmission belt 20 respectively.

[0070] During the working process, after the hub assembly is completed and the two protective covers 37 are closed, the first driving motor 3 is started, and the first driving motor 3 drives the vertical shaft 4 and the hub to rotate forward. At the same time, the first gear 14 drives the second gear 15 to rotate in the opposite direction. Then, the rotating shaft of the second gear 15 drives the grinding wheel 28 to rotate in the opposite direction through the first transmission belt 19, the connecting shaft 18 and the second transmission belt 20. Thus, the rotation of the hub and the grinding wheel 28 is synchronized, but the rotation directions are opposite;

[0071] Furthermore, when the first transverse moving seat 21 moves towards the mounting frame 2, the first cross arm 16 and the second cross arm 17 will rotate through the connecting shaft 18, and the included angle between them gradually decreases. On the contrary, when the first transverse moving seat 21 moves away from the mounting frame 2, the included angle between the first cross arm 16 and the second cross arm 17 increases, ensuring that when the grinding wheel 28 is in different positions, the transmission connection state between it and the vertical shaft 4 can be normally maintained.

[0072] As another embodiment of the present invention, a hub grinding method is also proposed, using the hub grinding robot described above, including the following steps:

[0073] Step 1, place the hub to be processed on the bearing tray 5;

[0074] Step 2, start the screw driving mechanism to work forward, drive the first transverse moving seat 21 and the second transverse moving seat 22 to move towards the mounting frame 2 at the same time, and make the grinding wheel 28 contact the hub;

[0075] Step 3, the screw driving mechanism continues to work forward, so that the second transverse moving seat 22 moves towards the first transverse moving seat 21, the elastic connection mechanism is triggered, and the follower mechanism is prompted to close the two protective covers 37;

[0076] Step 4: The first drive motor 3 starts, drives the hub to rotate through the vertical shaft 4, and drives the grinding wheel 28 to rotate synchronously but in different directions through the direction-changing transmission mechanism;

[0077] Step 5: After grinding, the threaded drive mechanism works in reverse, and the two protective covers 37 and the grinding wheel 28 are reset in sequence, and the hub that has completed the grinding process is removed from the bearing tray 5.

[0078] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0079] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wheel hub grinding robot with liner support, comprising a support and a mounting frame fixed to the support; It is characterized in that Also includes: A vertical shaft is rotatably mounted on the mounting frame, and a bearing tray is fixed to one end of the vertical shaft away from the mounting frame for bearing the wheel hub to be processed; an expansion fastening mechanism is provided on the vertical shaft for supporting and fixing the wheel hub; The first and second transverse seats are slidably mounted on the support and are connected by two sets of elastic connection mechanisms. The second transverse seat is connected to a threaded drive mechanism mounted on the support, and the threaded drive mechanism can drive the first and second transverse seats to move along the length direction of the support. Two protective covers are movably provided on the support, and the two protective covers are connected to the first transverse seat and the second transverse seat via a follower mechanism installed on the support. The follower mechanism is triggered when the first transverse seat and the second transverse seat move relative to each other, and drives the two protective covers to move closer to each other; Wherein, the elastic connection mechanism includes a vertical plate fixed on the second transverse seat, a guide rod fixed on the vertical plate, and a cylindrical spring sleeved on the outer circumference of the guide rod; A grinding wheel is rotatably mounted on the first transverse seat, and the rotating shaft of the grinding wheel is connected to the vertical shaft via a direction-changing transmission mechanism, and the direction-changing transmission mechanism can cause the grinding wheel and the wheel hub located on the support tray to rotate synchronously and in different directions; A vertical arm is also fixedly mounted on the first transverse seat, the guide rod passes through the vertical arm and is slidably connected to the vertical arm, one end of the cylindrical spring is connected to the vertical arm, and the other end is connected to the vertical plate, and the vertical arm is connected to the follower mechanism; The following mechanism includes a guide structure arranged on the support and connected to two protective covers, and two sets of sleeve components connected to the guide structure. The sleeve components are arranged on the vertical arm and also connected to the vertical plate.

2. The wheel hub grinding robot with an inner lining support according to claim 1, characterized in that, The guide structure includes two first guide rails fixedly mounted on the support and a second guide rail fixed to the support and perpendicular to the two first guide rails. Two second sliders are slidably engaged in the second guide rails. The second sliders are fixedly connected to the protective cover through a connecting arm. A first slider is slidably engaged in the first guide rail, and the first slider is connected to the fitting assembly.

3. The hub grinding robot with an inner lining support according to claim 2, wherein, The sleeve assembly includes a follower block slidably mounted on the vertical arm, a transverse cylinder fixed to the side of the follower block, and a transverse rod slidably sleeved with the transverse cylinder, wherein one end of the transverse rod away from the follower block is fixed to the first slider; Among them, a second tilting rod is also provided between the transverse rod and the connecting arm, one end of the second tilting rod is rotatably connected to the transverse rod, and the other end is rotatably connected to the connecting arm, and a first tilting rod is provided between the follower block and the vertical plate, and the two ends of the first tilting rod are respectively rotatably connected to the vertical plate and the follower block.

4. A hub grinding robot with an inner lining support according to claim 1, characterized in that, The expansion fastening mechanism includes an expansion structure mounted on the vertical shaft and a screw-assisting assembly connected to the expansion structure. The screw-assisting assembly can move along the axial direction of the vertical shaft and prompt the expansion structure to perform expansion and contraction actions.

5. The hub grinding robot with an inner lining support according to claim 4, characterized in that, The expanding and supporting structure includes a plurality of support arms fixedly arranged on the vertical shaft at equal intervals along the circumference and a plurality of connecting plates slidably arranged on the plurality of support arms respectively. A support rod member is fixedly arranged on the upper part of the connecting plate, and a connecting rod is hinged to the lower part. The connecting rod is connected with the screwing boosting assembly.

6. The hub grinding robot with an inner lining support according to claim 5, characterized in that, The screwing boosting assembly includes a first sleeve and a second sleeve sleeved on the vertical shaft. The first sleeve and the second sleeve are rotatably connected, the first sleeve is threadedly connected with the vertical shaft, the second sleeve is slidably connected with the vertical shaft, and one end of the connecting rod away from the connecting plate is rotatably connected with the second sleeve; Wherein, a strip-shaped through groove is axially arranged on the vertical shaft, and a column body is slidably arranged in the strip-shaped through groove. Both ends of the column body are fixed to the inner wall of the second sleeve.

7. The hub grinding robot with an inner lining support according to claim 1, characterized in that, A first driving motor is installed at the bottom of the mounting frame. The vertical shaft is connected to the output end of the first driving motor. The direction-changing transmission mechanism includes a first gear fixed on the vertical shaft and a second gear rotatably installed on the mounting frame and meshing with the first gear; Wherein, a first cross arm and a second cross arm are further arranged between the rotating shafts of the second gear and the grinding wheel. The first ends of the first cross arm and the second cross arm are rotatably connected through a connecting shaft, and the second ends are respectively rotatably connected to the rotating shafts of the second gear and the grinding wheel. The connecting shaft is also connected to the rotating shafts of the second gear and the grinding wheel through a first transmission belt and a second transmission belt respectively.

8. A hub grinding method, using the hub grinding robot as described in claim 1, characterized in that, It includes the following steps: Step 1, place the hub to be processed on the bearing tray; Step 2, start the thread driving mechanism to work forward, drive the first transverse movement seat and the second transverse movement seat to move close to the mounting frame at the same time, and make the grinding wheel contact the hub; Step 3, the thread driving mechanism continues to work forward, so that the second transverse movement seat approaches the first transverse movement seat, the elastic connection mechanism is triggered, and the follower mechanism is prompted to drive the two protective covers to close together; Step 4, start the first driving motor, drive the hub to rotate through the vertical shaft, and drive the grinding wheel to rotate synchronously but in different directions through the direction-changing transmission mechanism; Step 5, after grinding is completed, the thread driving mechanism works in reverse, the two protective covers and the grinding wheel are reset in sequence, and the hub that has completed the grinding process is taken off the bearing tray.

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