A self-adjusting gear clamping device

Abstract

This utility model discloses a self-adjusting gear clamping device. The device includes a worktable with multiple sets of rollers mounted on its top outer wall. The rollers are connected to the worktable via a fixing assembly. The fixing assembly includes a sliding cavity and two limiting blocks. The sliding cavity is located on the inner wall of the worktable, and a placement groove for the rollers is formed on the top outer wall of the worktable. The two ends of the sliding cavity are located on either side of the placement groove. The two limiting blocks slide laterally against the inner walls at both ends of the sliding cavity. A limiting groove is formed on the side wall of a roller's fixing bracket, which limits the movement of the limiting blocks. A spring is fixedly connected to one end of the limiting block's side wall. An electromagnet is fixed to the bottom inner wall of the sliding cavity. This utility model, by incorporating rollers and a fixing assembly, avoids wear between the gears and the top surface of the worktable after prolonged use, and also facilitates roller replacement with lower replacement costs.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, and in particular to a self-adjusting gear clamping device. Background Technology

[0002] To prevent gears from wobbling or shifting during machining, they need to be clamped first.

[0003] A search revealed a Chinese patent publication number CN210306091U, which discloses a self-adjusting semi-automatic gear clamping device. This device comprises a fixture body, a lifting block, a pushing block, a lifting cylinder, and a pushing cylinder. Its structure is as follows: a lifting block is placed above the fixture body; a lifting cylinder is mounted at the center of the fixture body in the vertical direction, connected to the lifting block at the top; the lifting cylinder can push the lifting block to move axially within the fixture body; a pushing block is placed above the lifting block, connected to the pushing cylinder, which drives the pushing block to move radially within the fixture body.

[0004] This patented technology saves time on fixture adjustment and part clamping by using a semi-automatic method, thereby improving production efficiency. However, the gears will rub against the outer wall of the fixture body during the adjustment and alignment process. After long-term use, the fixture body will experience significant wear, affecting accuracy and requiring repair or replacement, which is costly. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-adjusting gear clamping device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A self-adjusting gear clamping device includes a worktable. Multiple sets of rollers are arranged circumferentially around the worktable's axis on the top outer wall of the worktable. Each set of rollers includes multiple rollers arranged in a straight line. The rollers are connected to the worktable via a fixing assembly. The fixing assembly includes a sliding cavity and two limiting blocks. The sliding cavity is U-shaped and located on the inner wall of the worktable. A placement groove for placing the rollers is provided on the top outer wall of the worktable. The two ends of the sliding cavity are located on either side of the placement groove. The two limiting blocks slide laterally against the inner walls at both ends of the sliding cavity. A limiting groove is provided on the side wall of a roller's fixing bracket, corresponding to the limiting blocks. A spring is fixedly connected to one side wall of each limiting block, and the other end of the spring is connected to the inner wall of the sliding cavity. An electromagnet is fixed to the bottom inner wall of the sliding cavity, located between the two limiting blocks. A magnet, aligned with the electromagnet, is fixed to the outer wall of one opposite side of each limiting block.

[0008] As a further improvement of this utility model: the top outer wall of the workbench is provided with multiple guide grooves, which are arranged circumferentially around the axis of the workbench, and sliding blocks are slidably fitted on the inner wall of the guide grooves.

[0009] As a further embodiment of this utility model: a lead screw is rotatably connected to the inner wall of the guide groove, the lead screw is threadedly engaged with the sliding block, and foldable sealing plates for closing the guide groove are provided on both sides of the sliding block.

[0010] As a further improvement of this utility model: one end of the lead screw is connected to a driven bevel gear, and multiple driven bevel gears mesh with the same driving bevel gear.

[0011] As a further embodiment of this utility model: one end of the shaft of the active bevel gear is connected to a worm gear, one side of the worm gear is engaged with a worm, and a motor that drives the worm to rotate is installed on the inner wall of the worktable.

[0012] As a further embodiment of this utility model: a moving bar is laterally slidably fitted on one side of the sliding block, and a pressure sensor is installed on the inner wall of the active bevel gear, with the pressure sensor in contact with the outer wall of one side of the moving bar.

[0013] As a further improvement of this utility model: a slot is provided on the outer wall of the moving strip, and a contact plate is provided on one side of the moving strip. The contact plate is inserted into the slot through a T-shaped rod.

[0014] Compared with the prior art, the present invention provides a self-adjusting gear clamping device, which has the following advantages:

[0015] 1. This utility model, by providing rollers and fixing components, avoids wear and tear on the top surface of the worktable after prolonged use, while also facilitating roller replacement and reducing roller replacement costs.

[0016] 2. This utility model, by setting a moving bar and pressure sensors, uses multiple pressure sensors to detect the pressure between the moving bar and the gear, determines whether the gear is aligned, achieves automatic alignment, and can avoid excessive pressure between the moving bar and the gear.

[0017] 3. This utility model, by providing slots and contact plates, facilitates the replacement of the corresponding contact plates according to the size of the gear, and can ensure the contact area between the device and the inner hole of the gear.

[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a self-adjusting gear clamping device proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a fixing assembly for a self-adjusting gear clamping device proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of a self-adjusting gear clamping device proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the drive structure of the worm gear in a self-adjusting gear clamping device proposed in this utility model.

[0023] Figure 5 This is a partial structural schematic diagram of a self-adjusting gear clamping device proposed in this utility model.

[0024] In the diagram: 1. Workbench; 2. Guide groove; 3. Sliding block; 4. Roller; 5. Sliding cavity; 6. Limiting block; 7. Spring; 8. Electromagnet; 9. Limiting groove; 10. Magnetic piece; 11. Lead screw; 12. Driven bevel gear; 13. Driving bevel gear; 14. Worm gear; 15. Worm; 16. Moving bar; 17. Pressure sensor; 18. Slot; 19. Contact plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1

[0028] A self-adjusting gear clamping device, such as Figures 1 to 4As shown, the system includes a worktable 1. Multiple guide grooves 2 are formed on the top outer wall of the worktable 1, arranged circumferentially around the axis of the worktable 1. Sliding blocks 3 are slidably fitted onto the inner walls of the guide grooves 2. Multiple sets of rollers 4 are provided on the top outer wall of the worktable 1, arranged circumferentially around the axis of the worktable 1. Each set of rollers 4 includes multiple rollers arranged in a straight line. The number of rollers 4 is not limited. The rollers 4 are connected to the worktable 1 via a fixing assembly. Each roller 4 includes a fixed frame and a rotating wheel. The rollers 4 represent existing mature technology, and their basic structure and working principle are well-known to those skilled in the art; therefore, they will not be described in detail here. The fixing assembly includes a sliding cavity 5 and two limiting blocks. 6. The sliding cavity 5 is opened on the inner wall of the workbench 1 and the sliding cavity 5 is U-shaped. The top outer wall of the workbench 1 is provided with a placement groove for placing the roller 4. The two ends of the sliding cavity 5 are located on both sides of the placement groove. Two limiting blocks 6 are laterally slidably engaged with the inner walls of the two ends of the sliding cavity 5. The side wall of the fixing frame of the roller 4 is provided with a limiting groove 9 that is engaged with the limiting block 6. A spring 7 is fixedly connected to one side wall of the limiting block 6. The other end of the spring 7 is connected to the inner wall of the sliding cavity 5. An electromagnet 8 is fixed to the bottom inner wall of the sliding cavity 5. The electromagnet 8 is located between the two limiting blocks 6. A magnet 10 aligned with the electromagnet 8 is fixed to the outer wall of the opposite side of the two limiting blocks 6.

[0029] A lead screw 11 is rotatably connected to the inner wall of the guide groove 2. The lead screw 11 is threadedly engaged with the sliding block 3. Foldable sealing plates for closing the guide groove 2 are provided on both sides of the sliding block 3. One end of the lead screw 11 is connected to a driven bevel gear 12. Multiple driven bevel gears 12 are driven and meshed with the same driving bevel gear 13. One end of the shaft of the driving bevel gear 13 is connected to a worm gear 14. A worm 15 is driven and meshed on one side of the worm gear 14. A motor that drives the worm 15 to rotate is installed on the inner wall of the worktable 1. A moving bar 16 is laterally slidably engaged on one side of the sliding block 3. A pressure sensor 17 is installed on the inner wall of the driving bevel gear 13. The pressure sensor 17 is in contact with the outer wall of one side of the moving bar 16.

[0030] When clamping the gear, the gear is placed on the surface of the worktable 1, with the roller 4 in contact with the outer wall of the gear bottom. Multiple sliding blocks 3 are located inside the gear's inner hole. The motor drives the worm gear 15 to rotate, which in turn drives the driving bevel gear 13 to rotate through the transmission of the worm gear 15 and the worm wheel 14. The driving bevel gear 13 drives the driven bevel gear 12 to rotate, and the lead screw 11 rotates, causing the sliding blocks 3 to move along the guide groove 2 away from the axis of the worktable 1. One or more moving strips 16 first contact the gear. The pressure sensor 17 detects the pressure between the moving strip 16 and the gear. When the pressures detected by multiple pressure sensors 17 are different, it indicates that the center of the gear is not aligned with the center of the worktable 1. At this time, the motor continues to run. The active bevel gear 13 moves until the pressure detected by multiple pressure sensors 17 is consistent. During the gear movement, the roller 4 changes the sliding friction between the gear and the surface of the worktable 1 into rolling friction between the gear and the roller 4, resulting in less friction and preventing wear on the surface of the worktable 1 after long-term operation. When the roller 4 needs to be replaced, the electromagnet 8 is energized, and the repulsive force between the electromagnet 8 and the magnetic piece 10 pushes the limiting block 6 to move away from the roller 4. The limiting block 6 disengages from the limiting groove 9, the spring 7 is compressed and deformed, and the limitation on the roller 4 is released. At this time, the roller 4 can be taken out of the placement groove for replacement. The electromagnet 8 is de-energized, the spring 7 pushes the limiting block 6 to reset, and the roller 4 is fixed.

[0031] By incorporating rollers 4 and a fixing assembly, wear and tear on the top surface of the worktable 1 after prolonged use is avoided, while also facilitating the replacement of rollers 4 at a lower cost.

[0032] By setting up a moving bar 16 and pressure sensors 17, multiple pressure sensors 17 are used to detect the pressure between the moving bar 16 and the gear, determine whether the gear is aligned, achieve automatic alignment, and avoid excessive pressure between the moving bar 16 and the gear.

[0033] Example 2

[0034] A self-adjusting gear clamping device, this embodiment is based on embodiment 1, with the following improvements, such as... Figure 5 As shown, the outer wall of the moving strip 16 is provided with a slot 18, and a contact plate 19 is provided on one side of the moving strip 16. The contact plate 19 is inserted into the slot 18 through a T-shaped rod.

[0035] Before clamping the gear, select the corresponding contact plate 19 according to the size of the gear, insert the T-shaped rod on one side of the contact plate 19 into the slot 18, and fix the contact plate 19. By replacing the corresponding contact plate 19, the contact area between the device and the inner hole of the gear can be guaranteed, and the contact area is avoided because the frictional resistance is small compared with the size of the gear, which makes it impossible to clamp the gear well.

[0036] By providing slots 18 and contact plates 19, it is easy to replace the corresponding contact plates 19 according to the size of the gear, which can ensure the contact area between the device and the inner hole of the gear.

[0037] Working principle: When clamping the gear, select the corresponding contact plate 19 according to the size of the gear, insert the T-shaped rod on one side of the contact plate 19 into the slot 18, and fix the contact plate 19. By changing the corresponding contact plate 19, the contact area between the device and the inner hole of the gear can be guaranteed. Place the gear on the surface of the worktable 1, the roller 4 contacts the outer wall of the bottom of the gear, and multiple sliding blocks 3 are located inside the inner hole of the gear. The motor drives the worm gear 15 to rotate, and through the transmission of the worm gear 15 and the worm wheel 14, it drives the active bevel gear 13 to rotate. The active bevel gear 13 drives the driven bevel gear 12 to rotate, and the lead screw 11 rotates, causing the sliding block 3 to move along the guide groove 2 away from the axis of the worktable 1. One or more moving bars 16 first contact the gear. The pressure sensor 17 detects the pressure between the moving bar 16 and the gear. When multiple pressure sensors... When the pressure detected by the pressure sensor 17 is different, it indicates that the center of the gear is not aligned with the center of the worktable 1. At this time, the motor continues to run, causing the drive bevel gear 13 to move until the pressure detected by multiple pressure sensors 17 is consistent. During the gear movement, the roller 4 changes the sliding friction between the gear and the surface of the worktable 1 into rolling friction between the gear and the roller 4, which reduces the friction and avoids wear on the surface of the worktable 1 after long-term work. When the roller 4 needs to be replaced, the electromagnet 8 is energized, and the repulsive force between the electromagnet 8 and the magnetic piece 10 pushes the limiting block 6 to move away from the roller 4. The limiting block 6 disengages from the limiting groove 9, the spring 7 is compressed and deformed, and the limitation on the roller 4 is released. At this time, the roller 4 can be taken out of the placement groove for replacement. The electromagnet 8 is de-energized, the spring 7 pushes the limiting block 6 to reset, and the roller 4 is fixed.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-adjusting gear clamping device, comprising a worktable (1), characterized in that, The top outer wall of the workbench (1) is provided with multiple sets of rollers (4), which are arranged circumferentially around the axis of the workbench (1). Each set of rollers (4) includes multiple rollers (4) arranged in a straight line. The rollers (4) are connected to the workbench (1) by a fixing component. The fixing component includes a sliding cavity (5) and two limiting blocks (6). The sliding cavity (5) is opened in the inner wall of the workbench (1) and is U-shaped. The top outer wall of the workbench (1) is provided with a placement groove for placing the rollers (4). The two ends of the sliding cavity (5) are located at the placement groove. On both sides of the groove, two limiting blocks (6) slide laterally against the inner walls of the two ends of the sliding cavity (5). The side wall of the fixed frame of a roller (4) is provided with a limiting groove (9) that is matched with the limiting block (6). A spring (7) is fixedly connected to one side wall of the limiting block (6), and the other end of the spring (7) is connected to the inner wall of the sliding cavity (5). An electromagnet (8) is fixed to the inner wall of the bottom end of the sliding cavity (5). The electromagnet (8) is located between the two limiting blocks (6). A magnet (10) aligned with the electromagnet (8) is fixed to the outer wall of the opposite side of the two limiting blocks (6).

2. The self-adjusting gear clamping device according to claim 1, characterized in that, The top outer wall of the workbench (1) is provided with multiple guide grooves (2), which are arranged circumferentially around the axis of the workbench (1). The inner wall of the guide grooves (2) is slidably fitted with sliding blocks (3).

3. The self-adjusting gear clamping device according to claim 2, characterized in that, The inner wall of the guide groove (2) is rotatably connected to a lead screw (11), which is threadedly engaged with the sliding block (3). The sliding block (3) has foldable sealing plates on both sides for closing the guide groove (2).

4. The self-adjusting gear clamping device according to claim 3, characterized in that, One end of the lead screw (11) is connected to a driven bevel gear (12), and multiple driven bevel gears (12) are driven to mesh with the same driving bevel gear (13).

5. The self-adjusting gear clamping device according to claim 4, characterized in that, One end of the shaft of the active bevel gear (13) is connected to a worm gear (14), and a worm (15) is engaged on one side of the worm gear (14). A motor that drives the worm (15) to rotate is installed on the inner wall of the worktable (1).

6. The self-adjusting gear clamping device according to claim 2, characterized in that, The sliding block (3) has a sliding strip (16) on one side that slides laterally. A pressure sensor (17) is installed on the inner wall of the active bevel gear (13). The pressure sensor (17) is in contact with the outer wall of the sliding strip (16).

7. A self-adjusting gear clamping device according to claim 6, characterized in that, The outer wall of the moving strip (16) is provided with a slot (18), and a contact plate (19) is provided on one side of the moving strip (16). The contact plate (19) is inserted into the slot (18) through a T-shaped rod.

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