Clamp for feeding and discharging of hub spinning

Abstract

The utility model relates to a clamp for wheel hub spinning feeding and discharging, including the flange connecting piece of detachable connection in industrial robot end part, the clamping support spare of setting in the both sides of flange connecting piece, the one side of each clamping support spare is equipped with the clamping assembly of sliding relative to clamping support spare, the clearance change between adjacent clamping assembly can clamp or loosen wheel hub, the inside of clamping support spare still is equipped with the drive assembly of drive clamping assembly sliding, the clamp of the utility model has two clamping stations, one station can unload the wheel hub on spinning machine at the same time, industrial robot only needs to rotate the clamp 180 degrees and adjusts the position, another station can put the wheel hub that has not been processed into spinning machine, and the feeding is carried out immediately after unloading.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub manufacturing technology, specifically to a clamp for loading and unloading wheel hubs during spinning. Background Technology

[0002] The spinning process for bus wheel hubs involves using a fixture to fix the wheel blank onto a spinning machine for plastic forming. First, the operator must select a suitable fixture based on the wheel hub size. The fixture typically employs hydraulic or mechanical clamping to ensure the wheel blank does not shift during high-speed rotation. Then, the wheel blank is centered on the spinning machine spindle, and a uniform clamping force is applied using the fixture's three- or four-jaw mechanism. This clamping force must meet the required process values ​​to prevent slippage during processing.

[0003] Next, start the spinning machine to rotate the wheel blank with the spindle, controlling the speed within the range of 200-800 rpm. The spinning cutter feeds from the edge of the wheel blank, and through a multi-pass progressive forming process, the metal material undergoes plastic flow under the pressure of the rollers, gradually forming the contour shape of the rim. During processing, the forming pressure and temperature must be monitored in real time to avoid defects such as cracks or wrinkles in the material. For aluminum alloy wheels, 3-5 spinning passes are usually required, and annealing is necessary after each pass to eliminate internal stress in the material.

[0004] The authorization announcement number CN222779189U discloses a wheel hub processing fixture. According to its specification and drawings, when clamping the wheel hub body, the wheel hub body is placed on the support base, the center hole of the wheel hub body is aligned with the elastic chuck so that the elastic chuck is inserted, and then the pull rod is controlled to move downward so that the tapered shaft squeezes the elastic chuck so that the elastic chuck clamps the center hole of the wheel hub body, thereby realizing the positioning and internal support clamping of the inner hole of the wheel hub body.

[0005] However, the solution has certain limitations: 1. When the clamp is used in the loading and unloading process of the spinning machine, it can only clamp one hub at a time, so it is necessary to unload the material first and then load it, which is inefficient; 2. How to avoid scratching the side wall of the hub while ensuring clamping and handling is also a problem that needs to be considered. Summary of the Invention

[0006] This utility model mainly addresses the problems existing in the wheel hub clamping process and invents a fixture for loading and unloading wheel hubs during spinning. The fixture of this solution has two clamping stations. One station can unload the wheel hubs on the spinning machine while the industrial robot only needs to rotate the fixture 180 degrees to adjust its position. The other station can then place the unprocessed wheel hubs onto the spinning machine and load them immediately after unloading.

[0007] The objective of this invention is achieved through the following technical solution: a clamp for loading and unloading wheel hubs by spinning, comprising a flange connector detachably connected to the end of an industrial robot, clamping supports disposed on both sides of the flange connector, each clamping support having a clamping component that slides relative to the clamping support on one side, the gap between adjacent clamping components changing to clamp or release the wheel hub, and a drive component for driving the clamping components to slide inside the clamping support.

[0008] Preferably, each of the clamping supports includes a first sheet metal cover and a second sheet metal cover. The top and sides of the first sheet metal cover are open, and the second sheet metal cover can be detachably installed on the first sheet metal cover to cover the top and sides of the first sheet metal cover.

[0009] Preferably, the drive assembly includes a first drive support plate, a second drive support plate, a support partition, and a cylinder element. The second drive support plate is vertically mounted on both sides of the first drive support plate, and a support partition is also provided in the middle of the first drive support plate. A cylinder element is provided between each second drive support plate and the support partition. The cylinder end face of each cylinder element is parallel to the support partition. The piston rod of each cylinder element is connected to the second drive support plate. The clamping assembly is detachably connected to one side wall of the cylinder body of the cylinder element.

[0010] Preferably, each cylinder element has a plurality of locking holes on its sidewall, each clamping assembly is detachably connected to the locking holes, a plurality of guide rods are provided between the support partition and the second drive support plate, and the cylinder body of the cylinder element is slidably connected to the guide rods.

[0011] Preferably, each of the first sheet metal covers has a first clearance groove on one side, and each of the clamping assemblies passes through the first clearance groove and is connected to the side wall of the cylinder element.

[0012] Preferably, the clamping assembly includes a claw arm pad and a claw arm element. The cross-sectional shape of the claw arm pad is I-shaped. One end of the claw arm pad is connected to the side wall of the cylinder element, and the other end of the claw arm pad is connected to the claw arm element.

[0013] Preferably, the claw arm element includes a first support arm and a second support arm with different widths, and clamping wheels are respectively provided at the end of the second support arm and at the junction of the first support arm and the second support arm.

[0014] Preferably, the flange connector includes a flange, a flange column, a connecting base, a side wall connecting plate, and a mounting plate. The flange has a flange column in the middle, a connecting base at the bottom of the flange column, and a plurality of side wall connecting plates between the side wall of the flange column and the clamping support. Each side wall connecting plate has a mounting plate fixedly connected to the clamping support at its end.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The fixture in this solution has two clamping stations. Therefore, while one station is unloading the hub on the spinning machine, the industrial robot only needs to rotate the fixture 180 degrees to adjust its position, and the other station can put the unprocessed hub onto the spinning machine. After unloading, loading can be carried out immediately, which can significantly improve the efficiency of the production process.

[0017] 2. The three guide rods inside the clamping support can improve the stability support force when the cylinder element slides relative to the inside of the clamping support, making the cylinder element more stable and precise during movement, and making it difficult to generate unnecessary shaking.

[0018] 3. The width of the first support arm is greater than that of the second support arm, creating a stepped force transmission. This ensures the mechanical strength of the support arms while reducing weight, providing better support for clamping wheel hubs of different weights and solving the stress concentration problem of traditional clamps. The clamping wheel can rotate relative to the claw arm element, achieving dynamic self-adjusting clamping and reducing the risk of scratches on the wheel hub surface. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a perspective view of the present invention after removing a second sheet metal protective cover;

[0021] Figure 3 This is a partial perspective view of the present invention after the second sheet metal cover has been removed;

[0022] Figure 4 This is a perspective view of the present invention.

[0023] The markings in the diagram are as follows: 1. Flange connector; 11. Flange; 12. Flange column; 13. Connecting base; 14. Side wall connecting plate; 15. Mounting plate; 2. Clamping support; 21. First sheet metal cover; 22. Second sheet metal cover; 211. First clearance groove; 3. Clamping assembly; 31. Claw arm pad; 32. Claw arm element; 33. Clamping wheel; 321. First support arm; 322. Second support arm; 4. Drive assembly; 41. First drive support plate; 42. Second drive support plate; 43. Support partition; 44. Cylinder element; 441. Piston rod; 45. Guide rod. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, a clamp for loading and unloading wheel hubs by spinning includes a flange connector 1 detachably connected to the end of an industrial robot. The flange connector 1 includes a flange 11, a flange column 12, a connecting base 13, side wall connecting plates 14, and a mounting plate 15. The flange column 12 is located in the middle of the flange 11, and the connecting base 13 is located at the bottom of the flange column 12. Several side wall connecting plates 14 are provided between the side wall of the flange column 12 and the clamping support 2. Each side wall connecting plate 14 has a mounting plate 15 fixedly connected to its end in the clamping support 2.

[0026] With this configuration, the flange 11 can be detachably connected to the end of the industrial robot. The flange column 12 serves as the core load-bearing column, forming a vertical load main channel with the flange 11. The connecting base 13 extends the bottom support surface, forming a complete transmission chain from axial force to bending moment. The side wall connecting plates 14, arranged radially, disperse and transmit lateral shear force to the mounting plate 15, avoiding stress concentration. The side wall connecting plates 14 and the mounting plates 15 on both sides form a triangular stabilizing unit.

[0027] Please continue to refer to this. Figure 3 In this embodiment, the flange connector 1 is provided with clamping support members 2 on both sides, and each clamping support member 2 is provided with a clamping assembly 3 on one side that slides relative to the clamping support member 2. The gap between adjacent clamping assemblies 3 can clamp or release the hub. The clamping support member 2 is also provided with a driving assembly 4 that drives the clamping assembly 3 to slide.

[0028] Each of the clamping supports 2 includes a first sheet metal cover 21 and a second sheet metal cover 22. The top and sides of the first sheet metal cover 21 are open. The second sheet metal cover 22 can be detachably installed on the first sheet metal cover 21 and can cover the top and sides of the first sheet metal cover 21.

[0029] With this configuration, when installing the drive assembly 4 inside the first sheet metal cover 21, the top and sides of the first sheet metal cover 21 are open, allowing workers to install it more conveniently and quickly, and facilitating subsequent maintenance. After the first sheet metal cover 21 and the second sheet metal cover 22 are installed together, they provide a certain degree of protection for the drive assembly 4 inside, preventing excessive external impurities from entering and thus extending the service life of the drive assembly 4.

[0030] In this embodiment, the drive assembly 4 includes a first drive support plate 41, a second drive support plate 42, a support partition 43, and a cylinder element 44. The second drive support plate 42 is vertically mounted on both sides of the first drive support plate 41, and a support partition 43 is also provided in the middle of the first drive support plate 41. A cylinder element 44 is provided between each second drive support plate 42 and the support partition 43. The cylinder end face of each cylinder element 44 is parallel to the support partition 43. The piston rod 441 of each cylinder element 44 is connected to the second drive support plate 42. The clamping assembly 3 is detachably connected to one side wall of the cylinder body of the cylinder element 44.

[0031] When the piston rod of the cylinder element 44 is in the extended or retracted state, it can pull the position of the entire cylinder element 44 to change. When the position of the cylinder element 44 changes, it can simultaneously drive the gap between the adjacent clamping components 3 to change, thereby further realizing the clamping of the wheel hub between the adjacent clamping components 3.

[0032] Each cylinder element 44 has several locking holes on its side wall, and each clamping assembly 3 is detachably connected to the locking holes. Three guide rods 45 are provided between the support partition 43 and the second drive support plate 42, and the cylinder body of the cylinder element 44 is slidably connected to the guide rods 45.

[0033] The locking hole enables a detachable design between the cylinder element 44 and the clamping assembly 3, allowing for individual replacement of a damaged clamping assembly 3 and further reducing the overall maintenance cost of the fixture. The three guide rods 45 provide better stability and support when the cylinder element 44 slides relative to the clamping support 2, making the cylinder element 44 more stable and precise during movement, minimizing unnecessary wobbling.

[0034] Each of the first sheet metal covers 21 has a first clearance groove 211 on one side, and each of the clamping assemblies 3 passes through the first clearance groove 211 and is connected to the side wall of the cylinder element 44. The clamping assembly 3 includes a claw arm pad 31 and a claw arm element 32. The cross-sectional shape of the claw arm pad 31 is I-shaped. One end of the claw arm pad 31 is connected to the side wall of the cylinder element 44, and the other end of the claw arm pad 31 is connected to the claw arm element 32.

[0035] The claw arm element 32 changes position with the cylinder body of the cylinder element 44. The design of the first clearance groove 211 ensures that the claw arm element 32 does not interfere with the interior sliding of the clamping support 2. The changing distance between adjacent claw arm elements 32 allows for gradual clamping or releasing of the wheel hub.

[0036] In this embodiment, the claw arm element 32 includes a first support arm 321 and a second support arm 322 with different widths. The end of the second support arm 322 and the junction of the first support arm 321 and the second support arm 322 are respectively provided with clamping wheels 33.

[0037] The first support arm 321 and the second support arm 322 have several through holes on their surfaces. This design allows for lightweight design of the claw arm component 32 and avoids stress concentration. The width of the first support arm 321 is greater than that of the second support arm 322. The difference in width between the first support arm 321 and the second support arm 322 creates a stepped force transmission, providing better support for clamping wheel hubs of different weights and solving the stress concentration problem of traditional clamps.

[0038] Working principle and usage of this utility model:

[0039] The industrial robot changes the position of the entire fixture through the flange connector 1. Since the fixture in this solution has two stations for clamping, before unloading the wheel hub processed by the spinning machine, it is necessary to first use the claw arm element 32 on one of the stations to change with the position of the cylinder body of the cylinder element 44, so that the adjacent claw arm element 32 gradually clamps the unprocessed wheel hub.

[0040] Next, the industrial robot continues to control the position of the entire fixture via flange connector 1. The claw arm element 32 at another station changes position according to the cylinder body of cylinder element 44, causing adjacent claw arm elements 32 to gradually clamp the finished wheel hub on the spinning machine. Then, under the adjustment of the industrial robot, flange connector 1 rotates 180 degrees, readjusts its position, and releases the adjacent claw arm elements 32, allowing the unfinished wheel hub to be placed onto the spinning machine.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A clamp for loading and unloading wheel hubs during spinning, comprising a flange connector (1) detachably connected to the end of an industrial robot, and clamping supports (2) disposed on both sides of the flange connector (1), characterized in that, Each of the clamping supports (2) has a clamping assembly (3) on one side that slides relative to the clamping support (2). The gap between adjacent clamping assemblies (3) can clamp or release the hub. The clamping support (2) also has a drive assembly (4) inside that drives the clamping assembly (3) to slide.

2. The fixture for loading and unloading wheel hub spinning according to claim 1, characterized in that, Each of the clamping supports (2) includes a first sheet metal cover (21) and a second sheet metal cover (22). The top and sides of the first sheet metal cover (21) are open. The second sheet metal cover (22) can be detachably installed on the first sheet metal cover (21) and can cover the top and sides of the first sheet metal cover (21).

3. The fixture for loading and unloading wheel hub spinning according to claim 2, characterized in that, The drive assembly (4) includes a first drive support plate (41), a second drive support plate (42), a support partition (43), and a cylinder element (44). The second drive support plate (42) is vertically mounted on both sides of the first drive support plate (41). The support partition (43) is also provided in the middle of the first drive support plate (41). A cylinder element (44) is provided between each second drive support plate (42) and the support partition (43). The cylinder end face of each cylinder element (44) is parallel to the support partition (43). The piston rod (441) of each cylinder element (44) is connected to the second drive support plate (42). The clamping assembly (3) is detachably connected to one side wall of the cylinder body of the cylinder element (44).

4. The fixture for loading and unloading wheel hub spinning according to claim 3, characterized in that, Each of the cylinder elements (44) has several locking holes on its sidewall, and each of the clamping assemblies (3) is detachably connected to the locking holes. Several guide rods (45) are provided between the support partition (43) and the second drive support plate (42), and the cylinder body of the cylinder element (44) is slidably connected to the guide rods (45).

5. The fixture for loading and unloading wheel hub spinning according to claim 4, characterized in that, Each of the first sheet metal covers (21) has a first clearance groove (211) on one side, and each of the clamping components (3) passes through the first clearance groove (211) and is connected to the side wall of the cylinder element (44).

6. The fixture for loading and unloading wheel hub spinning according to claim 5, characterized in that, The clamping assembly (3) includes a claw arm pad (31) and a claw arm element (32). The cross-sectional shape of the claw arm pad (31) is I-shaped. One end of the claw arm pad (31) is connected to the side wall of the cylinder element (44), and the other end of the claw arm pad (31) is connected to the claw arm element (32).

7. The clamp for loading and unloading wheel hub spinning according to claim 6, characterized in that, The claw arm element (32) includes a first support arm (321) and a second support arm (322) with different widths. The end of the second support arm (322) and the junction of the first support arm (321) and the second support arm (322) are respectively provided with clamping wheels (33). The clamping wheels (33) can rotate relative to the claw arm element (32).

8. The fixture for loading and unloading wheel hub spinning according to claim 1, characterized in that, The flange connector (1) includes a flange (11), a flange column (12), a connecting base (13), a side wall connecting plate (14), and a mounting plate (15). The flange (11) has a flange column (12) in the middle and a connecting base (13) at the bottom of the flange column (12). Several side wall connecting plates (14) are provided between the side wall of the flange column (12) and the clamping support (2). Each side wall connecting plate (14) has a mounting plate (15) that can be detachably connected to the clamping support (2) at its end.

Images