Lining-supported hub grinding robot and grinding method

Abstract

The invention relates to the related technical field of grinding machining, in particular to a hub grinding robot supported by a lining and a grinding method.The hub grinding robot supported by the lining comprises a support and a mounting frame fixed to the support, and further comprises a vertical shaft rotationally mounted on the mounting frame, a bearing disc is fixed to the end, away from the mounting frame, of the vertical shaft and used for bearing a hub to be machined, and an expanding type fastening mechanism used for supporting and fixing the hub is arranged on the vertical shaft. Through symmetrical arrangement of the two protective covers, after a grinding wheel is driven to make contact with a hub, due to the fact that a first transverse moving seat and a second transverse moving seat are connected through two sets of elastic connecting mechanisms, the first transverse moving seat and the second transverse moving seat can move relatively, and a follow-up mechanism is promoted to drive the two protective covers to execute the closing action; the two protective covers cover the hub and the grinding disc, and the surrounding type dust removal effect is achieved under the condition that hub clamping is not affected.

Description

Technical Field

[0001] The 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 tire with its inner profile. The center is installed on the axle. Its main function is to connect the wheel and the car body, and it bears the responsibility of bearing weight, transmitting torque and serving as a decoration.

[0003] In wheel hub production, grinding is an essential processing procedure. During the grinding process, a lot 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 the workers who are in this working environment for a long time.

[0004] In this regard, some grinding and processing equipment are usually equipped with vacuum cleaners on top. To avoid affecting the clamping of the wheel hub, these vacuum cleaners are usually installed in a ceiling-mounted manner. When working, the vacuum cleaners have limited vacuum effects. Often, debris is still scattered into the environment due to poor vacuum effects, or the equipment needs to have sufficient power to ensure the vacuum effects, making it difficult to achieve ideal use effects. 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, comprising a support and a mounting frame fixed on the support, and further comprising:

[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 bear 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;

[0009] A first transverse seat and a second transverse seat are slidably arranged on the support, and the two are connected by two sets of elastic connection mechanisms. The second transverse seat is connected to a threaded driving mechanism installed on the support, and the threaded driving mechanism can drive the first transverse seat and the second transverse seat to move along the length direction of the support;

[0010] 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 on the bearing plate to rotate synchronously and in different directions;

[0011] 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 through 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 approach and close to each other.

[0012] As a further solution of the present invention: 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 periphery of the guide rod;

[0013] A vertical arm is 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 columnar 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.

[0014] As a further solution of the present invention: the follower mechanism includes a guide structure arranged on the support and connected to the 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.

[0015] As a further solution of the present invention: the guide structure includes two first guide rails that are fixedly mounted on the support and a second guide rail that is 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 sleeve assembly.

[0016] As a further solution of the present invention: the sleeve assembly includes a follower block slidably arranged on the vertical arm, a transverse tube fixed to the side of the follower block, and a transverse rod slidably sleeved with the transverse tube, and one end of the transverse rod away from the follower block is fixed to the first sliding block;

[0017] 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 both ends of the first tilting rod are rotatably connected to the vertical plate and the follower block respectively.

[0018] As a further solution of the present invention: the expansion type fastening mechanism includes an expansion support structure installed on the vertical shaft and a screw-assisting assembly connected to the expansion support structure, the screw-assisting assembly can move along the axial direction of the vertical shaft and prompt the expansion support structure to perform expansion and contraction actions.

[0019] As a further solution of the present invention: the expansion support structure includes a plurality of support arms fixed 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 is fixed on the upper part of the connecting plate, and a connecting rod is hinged on the lower part, and the connecting rod is connected to the screwing assist assembly.

[0020] As a further solution of the present invention: the screwing assist assembly includes a first set and a second set which are sleeved on the vertical shaft, the first set is rotatably connected to the second set, and the first set is threadedly connected to the vertical shaft, the second set is slidably connected to the vertical shaft, and the end of the connecting rod away from the connecting plate is rotatably connected to the second set;

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

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

[0023] Among them, a first cross arm and a second cross arm are also provided between the rotating shafts of the second gear and the grinding wheel. The head ends of the first cross arm and the second cross arm are rotationally connected through a connecting shaft, and the tail ends are rotationally connected to the second gear and the rotating shaft of the grinding wheel respectively, and the connecting shaft is also connected to the second gear and the rotating shaft of the grinding wheel respectively through a first transmission belt and a second transmission belt.

[0024] A wheel hub grinding method, using the wheel hub grinding robot, comprises the following steps:

[0025] Step 1: Place the wheel hub to be processed on the tray;

[0026] Step 2: Start the thread drive mechanism to work in the forward direction, drive the first lateral movement seat and the second lateral movement seat to move close to the mounting frame at the same time, and make the grinding wheel contact with the wheel hub;

[0027] Step 3: The threaded drive mechanism continues to work in the forward direction, so that the second transverse seat moves closer to the first transverse seat, and the elastic connection mechanism is triggered, prompting the follower mechanism to drive the two protective covers to move together;

[0028] Step 4: The first drive motor is started, driving the wheel hub to rotate through the vertical shaft, and driving the grinding wheel to rotate synchronously but in different directions through the direction-changing transmission mechanism;

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

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] Through the symmetrical arrangement of the two protective covers, after the grinding wheel is driven to contact the wheel hub, since the first transverse moving seat and the second transverse moving seat are connected by two sets of elastic connection mechanisms, the first transverse moving seat and the second transverse moving seat can move relative to each other, thereby 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, and achieve an enveloping dust removal effect without affecting the clamping of the wheel hub. Compared with the dust removal equipment installed on the ceiling, it can effectively improve the comprehensiveness of dust collection, and the requirement for dust collection power is lower;

[0032] Secondly, during the grinding process, the direction-changing transmission mechanism is used to realize the synchronous but different-direction rotation of the wheel hub and the grinding wheel, which can effectively improve the efficiency of the grinding process compared with the driving mode of only driving the wheel hub to rotate or only driving the grinding wheel to rotate;

[0033] In addition, when fixing the wheel hub, the staff only needs to screw the first kit to make multiple support rods expand and support and fix the wheel hub. Therefore, the staff does not need to perform multiple point fixation along the circumference of the wheel hub in sequence, which simplifies the clamping work of the wheel hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 An axonometric view of an embodiment of a wheel hub grinding robot supported by a liner.

[0035] Figure 2 A partial cross-sectional view of an embodiment of a wheel hub grinding robot supported by a liner.

[0036] Figure 3 A schematic structural diagram of an embodiment of a liner-supported wheel hub grinding robot.

[0037] Figure 4 A schematic structural diagram of an embodiment of a liner-supported wheel hub grinding robot from another angle.

[0038] Figure 5 A schematic structural diagram of an embodiment of a liner-supported wheel hub grinding robot from another angle.

[0039] Figure 6 A schematic structural diagram of an embodiment of a liner-supported wheel hub grinding robot from another angle.

[0040] Figure 7 for Figure 6 A magnified view of the structure at center.

[0041] Figure 8 A schematic structural diagram of a support in one embodiment of a wheel hub grinding robot supported by an inner liner.

[0042] Fig. 9 A schematic diagram of the connection relationship between the vertical shaft and the grinding wheel in one embodiment of a liner-supported wheel hub grinding robot.

[0043] Fig.10 An exploded view of the structure of an expansion type fastening mechanism in one embodiment of a liner supported wheel hub grinding robot.

[0044] Fig.11 A schematic structural diagram of an elastic connection mechanism in an embodiment of a liner-supported wheel hub grinding robot.

[0045] Fig.12 An exploded view of the structure of the follower mechanism in one embodiment of a liner-supported wheel hub grinding robot.

[0046] In the figure: 1, support; 2, mounting frame; 3, first drive motor; 4, vertical shaft; 401, strip-shaped through slot; 5, bearing tray; 6, support arm; 7, connecting plate; 8, support rod; 9, connecting rod; 10, column; 11, first set; 12, second set; 13, second drive 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 Moving belt; 21, first transverse shift seat; 22, second transverse shift seat; 23, booster block; 24, vertical plate; 25, guide rod; 26, cylindrical spring; 27, vertical arm; 28, grinding wheel; 29, follower block; 30, first tilting rod; 31, transverse cylinder; 32, transverse rod; 33, second tilting rod; 34, first guide rail; 3401, first slider; 35, second guide rail; 3501, second slider; 36, connecting arm; 37, protective cover. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0049] See also Figure 1-Figure 12 In an embodiment of the present invention, a wheel hub grinding robot supported by a liner includes a support 1 and a mounting frame 2 fixed on 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 bear 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] The first transverse seat 21 and the 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] A grinding wheel 28 is rotatably mounted on the first transverse shift seat 21, and the rotation axis of the grinding wheel 28 is connected to the vertical shaft 4 via a direction-changing transmission mechanism, and the direction-changing transmission mechanism can cause the grinding wheel 28 and the wheel hub on the support plate 5 to rotate synchronously and in different directions;

[0053] There are two protective covers 37 movably provided 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 follower mechanism installed on the support 1. The follower 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 to each other.

[0054] It should be noted that, during operation, the wheel hub to be processed is placed on the support tray 5, and the wheel hub is fixed by the expansion fastening mechanism. Then, the threaded driving mechanism works 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 wheel hub. When the grinding wheel 28 contacts the wheel hub, the first transverse seat 21 is limited and remains stationary. 22 continues to move, and relative movement occurs between the second transverse movement seat 22 and the first transverse movement seat 21. At this time, the elastic connection mechanism is triggered to prompt the follower mechanism to move, and the follower mechanism drives the two protective covers 37 to move closer to each other until the two protective covers 37 are docked. The two protective covers 37 can cover the wheel hub and the grinding wheel 28. Subsequently, the changing direction transmission mechanism is used to make the grinding wheel 28 and the wheel hub on the supporting 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 realize the synchronous but different-direction rotation of the wheel hub and the grinding wheel 28, which can effectively improve the efficiency of the grinding process compared to the unilateral driving mode (i.e., only driving the wheel hub to rotate or only driving the grinding wheel 28 to rotate);

[0056] Secondly, before the grinding starts, the two protective covers 37 can be close to each other and close together. Therefore, during the grinding process, the two protective covers 37 can cover the wheel hub and the grinding wheel 28 to form a protective shell to prevent the debris generated during the grinding process from flying around and causing damage to the workers.

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

[0058] Please refer again Fig.11 The elastic connection mechanism includes a vertical plate 24 fixed on the second transverse seat 22, a guide rod 25 fixed on the vertical plate 24, and a columnar spring 26 sleeved on the outer periphery of the guide rod 25. A vertical arm 27 is also fixedly mounted 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 columnar spring 26 is connected to the vertical arm 27, and the other end is connected to the vertical plate 24, and the vertical arm 27 is connected to the follower mechanism.

[0059] In detail, the threaded drive mechanism is provided with two groups, which include a threaded rod rotatably mounted on the support 1 and a second drive motor 13 mounted on the support 1, and the threaded rod is connected to the output end of the second drive motor 13;

[0060] Furthermore, a boosting block 23 is fixedly mounted on the second transverse shift seat 22, the threaded rod passes through the boosting block 23, and the boosting block 23 is threadedly connected to the threaded rod. When working, the second driving motor 13 drives the threaded rod to rotate in the forward direction, so that the boosting block 23 can be threadedly connected to the threaded rod, and then the boosting block 23 can drive the second transverse shift seat 22 to move along the length direction of the support 1. Before the grinding wheel 28 contacts the wheel hub, the second transverse shift seat 22 can drive the first transverse shift seat 21 to move together through the cylindrical spring 26;

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

[0062] Please refer again Fig.11 and Fig.12 The following mechanism includes a guide structure provided on the support 1 and connected to the two protective covers 37, and two sets of sleeve components connected to the guide structure. The sleeve components are provided on the vertical arm 27 and are also connected to the vertical plate 24. The guide structure includes two first guide rails 34 symmetrically 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 slidably embedded in the second guide rail 35. The second slider 3501 is fixedly connected to the protective cover 37 through a connecting arm 36. A first slider 3401 is slidably embedded in the first guide rail 34, and the first slider 3401 is connected to the sleeve component. The sleeve component includes a following block 29 slidably provided on the vertical arm 27, a transverse tube 31 fixed to the side of the following block 29, and a transverse rod 32 slidably sleeved with the transverse tube 31. The end of the transverse rod 32 away from the following block 29 is fixed to the first slider 3401.

[0063] Among them, a second tilting rod 33 is also provided between the transverse rod 32 and the connecting arm 36, one end of the second tilting rod 33 is rotationally connected to the transverse rod 32, and the other end is rotationally connected to the connecting arm 36, and a first tilting rod 30 is provided between the follower block 29 and the vertical plate 24, and the two ends of the first tilting rod 30 are rotationally connected to the vertical plate 24 and the follower block 29 respectively.

[0064] When the first transverse movement seat 21 and the second transverse movement seat 22 slide along the length direction of the support 1 at the same time, the transverse cylinder 31 slides on the transverse rod 32. During the relative movement of 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 transverse cylinder 31 and the transverse rod 32. The transverse rod 32 pushes the connecting arm 36 through the second inclined rod 33 to drive the second slider 3501 to slide in the second guide rail 35 toward the midpoint of the second guide rail 35. Therefore, the two protective covers 37 perform a closing action to form a shell that can cover the wheel hub and the grinding wheel 28, thereby playing a safety protection role during the grinding process.

[0065] After grinding is completed, the second drive motor 13 will drive the threaded rod to rotate in the opposite direction, so that the second transverse movement seat 22 slides away from the mounting frame 2. In the previous stroke, the cylindrical spring 26 gradually rebounds and resets, while the first transverse movement seat 21 and the grinding wheel 28 remain stationary, and 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 again Figure 7 and Fig.10The expansion-type fastening mechanism includes an expansion support structure mounted on the vertical shaft 4 and a screw-assisting assembly connected to the expansion support structure. The screw-assisting assembly can move along the axial direction of the vertical shaft 4 and prompt 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 slidably arranged on the plurality of support arms 6, a support rod 8 is fixedly arranged on the upper part of the connecting plate 7, and a connecting rod 9 is hinged on the lower part, and the connecting rod 9 is connected to the screw-assisting assembly. The screw-assisting assembly includes a first set 11 and a second set 12 sleeved 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, the second set 12 is slidably connected to the vertical shaft 4, and 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 disposed on the vertical shaft 4 , a column 10 is slidably disposed in the strip-shaped through slot 401 , and two ends of the column 10 are fixed to the inner wall of the second set 12 .

[0067] During the preparation work, the wheel hub to be processed is placed on the support tray 5, and then the staff uses a tool (wrench) to rotate the first kit 11 so that the first kit 11 is threadedly matched 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, and the multiple support rods 8 perform an expansion action to support the wheel hub liner and realize the fixing function of the wheel hub, thereby facilitating subsequent grinding 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 point fixation along the circumference of the wheel hub in sequence, which simplifies the work process.

[0069] Please refer again Fig. 9A first drive motor 3 is installed at the bottom of the mounting frame 2, and the vertical shaft 4 is connected to the output end of the first drive motor 3. The direction-changing transmission mechanism includes a first gear 14 fixed on the vertical shaft 4 and a second gear 15 rotatably mounted on the mounting frame 2 and meshing with the first gear 14. A first cross arm 16 and a second cross arm 17 are also provided between the rotation axes of the second gear 15 and the grinding wheel 28. The first cross arm 16 and the second cross arm 17 are rotationally connected at their head ends through a connecting shaft 18, and the tail ends are rotationally connected to the second gear 15 and the rotation axes of the grinding wheel 28, respectively. The connecting shaft 18 is also connected to the second gear 15 and the rotation axes of 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 together, the first drive motor 3 is started, and the first drive 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, so that 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, so that the hub and the grinding wheel 28 rotate synchronously, but in the opposite direction;

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

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

[0073] Step 1: placing the wheel hub to be processed on the tray 5;

[0074] Step 2: Start the thread drive mechanism to work forward, drive the first transverse moving seat 21 and the second transverse moving seat 22 to move close to the mounting frame 2 at the same time, and make the grinding wheel 28 contact with the wheel hub;

[0075] Step 3: The threaded drive mechanism continues to work in the forward direction, so that the second transverse seat 22 moves closer to the first transverse seat 21, and the elastic connection mechanism is triggered, prompting the follower mechanism to drive the two protective covers 37 to move together;

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

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

[0078] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0079] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wheel hub grinding robot supported by an inner liner, comprising a support (1) and a mounting frame (2) fixed on the support (1); It is characterized in that Also includes: A vertical shaft (4) is rotatably mounted on the mounting frame (2), and a bearing plate (5) is fixed to one end of the vertical shaft (4) away from the mounting frame (2), the bearing plate (5) being used to bear 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); A first transverse seat (21) and a second transverse seat (22) are slidably arranged on the support (1), and are connected by two sets of elastic connection mechanisms; the second transverse seat (22) is connected to a threaded drive mechanism installed on the support (1), and the threaded drive mechanism can drive the first transverse seat (21) and the second transverse seat (22) to move along the length direction of the support (1); A grinding wheel (28) is rotatably mounted on the first transverse displacement seat (21), and the rotation axis of the grinding wheel (28) is connected to the vertical shaft (4) via a direction-changing transmission mechanism, wherein the direction-changing transmission mechanism can cause the grinding wheel (28) and the wheel hub on the support plate (5) to rotate synchronously and in different directions; Two protective covers (37) are movably provided on the support (1); the two protective covers (37) are connected to the first transverse seat (21) and the second transverse seat (22) via a follower mechanism installed on the support (1); the follower 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 move closer to each other.

2. A wheel hub grinding robot supported by a liner according to claim 1, characterized in that: The elastic connection mechanism comprises a vertical plate (24) fixed on the second transverse displacement seat (22), a guide rod (25) fixed on the vertical plate (24), and a columnar spring (26) sleeved on the outer periphery of the guide rod (25); A vertical arm (27) is fixedly mounted 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 columnar spring (26) is connected to the vertical arm (27) and the other end is connected to the vertical plate (24); and the vertical arm (27) is connected to the follower mechanism.

3. The wheel hub grinding robot supported by a liner according to claim 2, characterized in that: The follower mechanism comprises a guide structure arranged on the support (1) and connected to the two protective covers (37), and two sets of sleeve components connected to the guide structure. The sleeve components are arranged on the vertical arm (27) and are also connected to the vertical plate (24).

4. The wheel hub grinding robot supported by a liner according to claim 3, characterized in that: The guide structure comprises two first guide rails (34) fixedly mounted 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 slidably engaged in the second guide rails (35); the second sliders (3501) are fixedly connected to the protective cover (37) via a connecting arm (36); a first slider (3401) is slidably engaged in the first guide rail (34); and the first slider (3401) is connected to the sleeve assembly.

5. The wheel hub grinding robot supported by a liner according to claim 4, characterized in that: The sleeve assembly comprises a follower block (29) slidably arranged on the vertical arm (27), a transverse tube (31) fixed to the side of the follower block (29), and a transverse rod (32) slidably sleeved with the transverse tube (31), and one end of the transverse rod (32) away from the follower block (29) is fixed to the first sliding block (3401); A second tilting rod (33) is further provided between the transverse rod (32) and the connecting arm (36), one end of the second tilting rod (33) is rotationally connected to the transverse rod (32), and the other end is rotationally connected to the connecting arm (36), and a first tilting rod (30) is provided between the follower block (29) and the vertical plate (24), and the two ends of the first tilting rod (30) are rotationally connected to the vertical plate (24) and the follower block (29) respectively.

6. The wheel hub grinding robot supported by a liner according to claim 1, characterized in that: The expansion type fastening mechanism comprises an expansion support structure mounted on the vertical shaft (4) and a screw-tightening boosting assembly connected to the expansion support structure. The screw-tightening boosting assembly can move along the axial direction of the vertical shaft (4) and prompt the expansion support structure to perform expansion and contraction actions.

7. The wheel hub grinding robot supported by a liner according to claim 6, characterized in that: The expansion support structure comprises a plurality of support arms (6) fixed on the vertical shaft (4) at equal intervals along the circumference and a plurality of connecting plates (7) slidably arranged on the plurality of support arms (6), wherein a support rod (8) is fixedly arranged on the upper part of the connecting plate (7) and a connecting rod (9) is hingedly arranged on the lower part, and the connecting rod (9) is connected to the screwing assist assembly.

8. The wheel hub grinding robot supported by a liner according to claim 7, characterized in that: The screwing assist assembly comprises a first assembly (11) and a second assembly (12) which are sleeved on the vertical shaft (4); the first assembly (11) and the second assembly (12) are rotatably connected, and the first assembly (11) is threadedly connected to the vertical shaft (4), the second assembly (12) is slidably connected to the vertical shaft (4), and one end of the connecting rod (9) away from the connecting plate (7) is rotatably connected to the second assembly (12); Wherein, a strip-shaped through groove (401) is provided on the vertical shaft (4) along the axial direction, a column (10) is slidably provided in the strip-shaped through groove (401), and two ends of the column (10) are fixed to the inner wall of the second set (12).

9. The wheel hub grinding robot supported by a liner according to claim 1, characterized in that: A first drive 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 drive motor (3); and the direction-changing transmission mechanism comprises a first gear (14) fixed on the vertical shaft (4) and a second gear (15) rotatably mounted on the mounting frame (2) and meshing with the first gear (14); A first cross arm (16) and a second cross arm (17) are provided between the rotation axes of the second gear (15) and the grinding wheel (28); the first cross arm (16) and the second cross arm (17) are rotationally connected at their head ends via a connecting shaft (18), and their tail ends are rotationally connected to the rotation axes of the second gear (15) and the grinding wheel (28), respectively; and the connecting shaft (18) is also connected to the rotation axes of the second gear (15) and the grinding wheel (28) via a first transmission belt (19) and a second transmission belt (20), respectively.

10. A wheel hub grinding method, using the wheel hub grinding robot as claimed in claim 1, characterized in that: The following steps are involved: Step 1, placing the wheel hub to be processed on the support tray (5); Step 2, starting the thread drive mechanism to work in the forward direction, driving the first transverse moving seat (21) and the second transverse moving seat (22) to move close to the mounting frame (2) at the same time, and making the grinding wheel (28) contact with the wheel hub; Step 3: The threaded drive mechanism continues to work in the forward direction, so that the second transverse shift seat (22) moves closer to the first transverse shift seat (21), and the elastic connection mechanism is triggered, prompting the follower mechanism to drive the two protective covers (37) to move closer together; Step 4: The first drive motor (3) is started, driving the wheel hub to rotate through the vertical shaft (4), and driving the grinding wheel (28) to rotate synchronously but in different directions through the direction-changing transmission mechanism; Step 5, after the grinding is completed, the thread drive mechanism works in the reverse direction, the two protective covers (37) and the grinding wheel (28) are reset in sequence, and the wheel hub that has completed the grinding process is removed from the bearing tray (5).

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