A four-axis tightening angle adjusting device

Abstract

The utility model discloses a four -axis tightening angle adjusting device relates to vehicle manufacturing technical field, including machine table subassembly and screwing screw subassembly, and machine table subassembly includes machine table and carousel, and carousel rotation connects machine table, screwing screw subassembly includes sliding piece and screwing screw piece, and sliding piece is along carousel's radial sliding and is located carousel, and screwing screw piece includes the motor and screw driving rod who is connected, and motor sets up sliding piece. The screwing screw subassembly provided by the utility model not only can along carousel's radial sliding, still can change angle along with carousel's rotation to can be on the circular rotating work station flexibly carry out screwing screw work, broke the limitation that traditional lock screw device can only adjust position along the straight line, greatly expanded the adjustment range, effectively solved the problem that the prior art is difficult to apply to the circular rotating work station screwing screw.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, specifically to a four-axis tightening angle adjustment device. Background Technology

[0002] In automobile manufacturing, screw-fastening devices are frequently used to fasten screws onto multiple vehicle components to complete the connection between them. These devices consist of a screw-fastening robotic arm and a three-axis drive frame. To increase the robotic arm's degrees of freedom, it is typically mounted on the three-axis drive frame. The drive frame controls the robotic arm's movement along the X, Y, and Z axes, enabling it to reach designated positions for screw-fastening operations.

[0003] However, existing screw-locking devices have shortcomings. For example, they can only adjust the position of the screw-locking robot arm in a straight line, which limits the adjustment range and makes them unsuitable for screw-locking work at circular rotating stations. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a four-axis tightening angle adjustment device to solve the technical problem that the screw-locking device in the prior art can only adjust the position of the screw-locking robot arm in a straight line, which limits the adjustment range and makes it difficult to apply to screw-locking work in a circular rotating station.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a four-axis tightening angle adjustment device, including: A machine tool assembly includes a machine tool and a turntable, the turntable being rotatably connected to the machine tool; and A screw-tightening assembly includes a slider and a screw-tightening component. The slider is slidably disposed on the turntable along the radial direction of the turntable. The screw-tightening component includes a motor and a screw drive rod connected to each other. The motor is disposed on the slider.

[0006] In some embodiments, the machine tool assembly further includes a meshing fixed gear ring and a gear drive component. The fixed gear ring is fixedly disposed on the machine tool, and the gear drive component is rotatably disposed on the turntable. When the gear drive component rotates, it can drive the turntable to rotate relative to the machine tool through meshing reaction force.

[0007] In some embodiments, the machine assembly further includes a centrifugal rocker arm connected to the gear drive and capable of rotating the gear drive when subjected to an external force.

[0008] In some embodiments, the machine assembly further includes a first limiting member disposed on the machine and capable of locking or unlocking the turntable.

[0009] In some embodiments, the first limiting member includes a fixing block and a first tightening screw. The fixing block is disposed on the machine base, and the first tightening screw is threaded through the fixing block. The turntable has a positioning hole, and the portion of the first tightening screw that passes through the fixing block is detachably inserted into the positioning hole.

[0010] In some embodiments, the machine assembly further includes a guide post disposed at the center of the turntable, the guide post having a circular guide circumferential surface on its side, and the screw tightening assembly further includes a guide member disposed on the turntable, the guide member having an arc-shaped groove at its end and fully conforming to the guide circumferential surface through the arc-shaped groove.

[0011] In some embodiments, the guide member has a through slot, the length direction of which is arranged radially along the turntable, the slider is slidably disposed in the through slot, and the screw drive rod passes through the through slot.

[0012] In some embodiments, the screw tightening assembly further includes a base and a second tightening screw. The second tightening screw includes a nut, a screw rod, and a limiting block connected together. One end of the screw rod is fixedly connected to the limiting block, and the limiting block is snapped into the base. The screw rod passes through the sliding member, and the nut is threadedly connected to the screw rod and can cooperate with the limiting block to abut against or disengage from the sliding member when rotating.

[0013] In some embodiments, the screw drive rod includes a rotating drum and a screw sleeve. One end of the rotating drum is connected to the motor, and the other end is detachably connected to the screw sleeve by a screw. The end of the screw sleeve away from the rotating drum has a groove for engaging a screw head.

[0014] In some embodiments, there are multiple screw-tightening assemblies arranged around the center of the turntable.

[0015] Compared with existing technologies, the four-axis tightening angle adjustment device provided by this utility model sets up a machine base assembly and a screw tightening assembly. The machine base assembly includes a machine base and a turntable, with the turntable rotatably connected to the machine base. The sliding component of the screw tightening assembly slides radially along the turntable and is mounted on the turntable, while the motor of the screw tightening assembly is mounted on the sliding component. This structure allows the screw tightening assembly to not only slide radially along the turntable but also change its angle as the turntable rotates. This enables flexible screw tightening operations at a circular rotating workstation, breaking the limitation of traditional screw tightening devices that can only adjust their position along a straight line. It greatly expands the adjustment range and effectively solves the problem that existing technologies are difficult to apply to screw tightening at circular rotating workstations. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of the four-axis tightening angle adjustment device provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the structure of the turntable provided in this embodiment of the utility model, which is equipped with multiple screw-tightening components; Figure 3 This is a schematic diagram of the structure of the turntable provided in this embodiment of the utility model, which is equipped with a screw-tightening assembly; Figure 4 This is a schematic diagram of the structure of the second tightening screw provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the structure of the guide component provided in an embodiment of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] To address the technical problem that existing screw-locking devices can only adjust the position of the screw-locking robot arm along a straight line, resulting in a limited adjustment range and making them unsuitable for screw-locking work at circular rotating stations, this invention provides a four-axis tightening angle adjustment device. This device enables dual adjustment of the screw-locking robot arm's position along both straight lines and curves, breaking the limitation of traditional screw-locking devices that can only adjust the position along a straight line.

[0019] It should be noted that the four-axis tightening angle adjustment device described in this utility model is used for, but not limited to, screw robotic arms. For ease of explanation, this utility model only uses the application of the four-axis tightening angle adjustment device to a screw robotic arm as an example. The principle of the four-axis tightening angle adjustment device in other types of equipment is essentially the same as that in the screw robotic arm, and will not be described in detail here.

[0020] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a four-axis tightening angle adjustment device in one embodiment of the present invention. The four-axis tightening angle adjustment device includes a machine base assembly 1 and a screw tightening assembly 2. The machine base assembly 1 includes a machine base 11 and a turntable 12, with the turntable 12 rotatably connected to the machine base 11. The screw tightening assembly 2 includes a sliding member 21 and a screw tightening member 22. The sliding member 21 is slidably disposed on the turntable 12 along the radial direction of the turntable 12. The screw tightening member 22 includes a motor 221 and a screw drive rod 222 connected to each other. The motor 221 is disposed on the sliding member 21.

[0021] In this embodiment, the motor 221 drives the screw drive rod 222 to rotate, thereby realizing the screw tightening operation. By sliding the slider 21 radially on the turntable 12, the position of the screw tightening component 22 in the radial direction of the turntable 12 can be adjusted so that it can reach different screw tightening positions. At the same time, the rotation of the turntable 12 can change the angle of the screw tightening component 22, so that it can adapt to the screw tightening needs of different positions on the circular rotating station. This embodiment can not only adjust the screw tightening position along a straight line, but also along a circumferential curve, breaking the limitation of traditional screw tightening devices that can only adjust the position along a straight line.

[0022] In one embodiment, please refer to Figure 1 The machine tool assembly 1 also includes a meshing fixed gear ring 13 and a gear drive component 14. The fixed gear ring 13 is fixedly mounted on the machine tool 11, and the gear drive component 14 is rotatably mounted on the turntable 12. When the gear drive component 14 rotates, it can drive the turntable 12 to rotate relative to the machine tool 11 through meshing reaction force. In this embodiment, the power source for the rotation of the turntable 12 is further described. Specifically, it is achieved by meshing the fixed gear ring 13 and the gear drive component 14, and by rotating the gear drive component 14, the rotation of the turntable 12 is controlled, allowing the turntable 12 to rotate at a preset angle, which helps to improve the positional accuracy of the screw tightening component 22. For example, when it is necessary to rotate the turntable 12 to a certain angle, it is only necessary to control the gear drive component 14 to rotate by the corresponding angle. Through the meshing transmission of the fixed gear ring 13 and the gear drive component 14, the turntable 12 can accurately rotate to the required angle position.

[0023] In one embodiment, please refer to Figure 1 The machine assembly 1 also includes a centrifugal rocker arm 15, which is connected to a gear drive component 14 and can drive the gear drive component 14 to rotate when subjected to external force. This embodiment provides a manual operation method for rotating the turntable 12 by setting the centrifugal rocker arm 15. In actual use, the operator can manually apply external force to the centrifugal rocker arm 15 to drive the gear drive component 14 to rotate, thereby achieving the rotation of the turntable 12. This method makes operation more flexible and convenient in situations where manual adjustment of the turntable 12 angle is required.

[0024] In one embodiment, please refer to Figure 1 and Figure 2The machine tool assembly 1 also includes a first limiting member 16, which is disposed on the machine tool 11 and can lock or unlock the turntable 12. In this embodiment, the function of the first limiting member 16 is to lock the turntable 12 after it reaches the desired angle position, preventing accidental rotation during operation and thus ensuring the stability and accuracy of the screw tightening operation 22. When it is necessary to adjust the angle of the turntable 12, the operator can release the lock of the first limiting member 16, allowing the turntable 12 to rotate freely; after adjusting to the appropriate position, it can be locked again by the first limiting member 16.

[0025] In one embodiment, please refer to Figure 2 The first limiting component 16 includes a fixing block 161 and a first loosening screw 162. The fixing block 161 is located on the machine base 11, for example, it can be fixed to the machine base 11 by screws. The first loosening screw 162 is threaded through the fixing block 161. The turntable 12 has a positioning hole (not shown in the figure). The part of the first loosening screw 162 that passes through the fixing block 161 can be detachably inserted into the positioning hole 121. The first limiting component 16 in this embodiment is simple and reliable. When it is necessary to lock the turntable 12, the operator only needs to tighten the first loosening screw 162 so that the part that passes through the fixing block 161 is inserted into the positioning hole 121 of the turntable 12, thereby fixing the turntable 12 on the machine base 11; when it is necessary to unlock the turntable 12, the operator only needs to loosen the first loosening screw 162 so that it is disengaged from the positioning hole 121, and the turntable 12 can rotate freely. This limiting method is convenient to operate and can quickly realize the locking and unlocking of the turntable 12, improving the efficiency of equipment use.

[0026] In one embodiment, please refer to Figure 3 and Figure 4 The machine assembly also includes a guide post 17, which is located at the center of the turntable 12. The guide post 17 has a circular guide circumferential surface 171 on its side. The screw-tightening assembly 2 also includes a guide member 23, which is located on the turntable 12. The end of the guide member 23 has an arc-shaped groove 231 that fully fits against the guide circumferential surface 171. In this embodiment, the guide post 17 and the guide member 23 provide guidance for the rotation of the turntable 12. When the turntable 12 rotates around the guide post 17, the arc-shaped groove 231 of the guide member 23 is always in close contact with the guide circumferential surface 171 of the guide post 17, thereby ensuring the stability of the rotation of the turntable 12.

[0027] In one embodiment, please refer to Figure 3 and Figure 4The guide member 23 has a through slot 232, the length of which is arranged radially along the turntable 12. The sliding member 21 is slidably disposed in the through slot 232, and the screw drive rod 222 passes through the through slot 232. In this embodiment, the through slot 232 provides sliding space for the sliding member 21 and the screw drive rod 222, allowing the sliding member 21 to slide smoothly within the through slot 232. At the same time, the screw drive rod 222 can also move accordingly as the sliding member 21 slides, thereby realizing the adjustment of the position of the screw tightening member 22 in the radial direction of the turntable 12. This structural design makes the tightening angle adjustment device more compact and also improves the sliding stability of the sliding member 21 and the screw drive rod 222.

[0028] In one embodiment, please refer to Figure 5 The screw assembly 2 also includes a base 24 and a second tightening screw 25. The second tightening screw 25 includes a nut 251, a screw 252, and a limiting block 253 connected together. One end of the screw 252 is fixedly connected to the limiting block 253, which is non-circular in shape to engage with the base 24. The screw 252 passes through a sliding member 21. The nut 251 is threadedly connected to the screw 252 and can engage with or disengage from the sliding member 21 with the limiting block 253 during rotation. In this embodiment, the function of the second tightening screw 25 is to fix the sliding member 21 to the base 24, and it can also adjust the position of the sliding member 21 on the base 24. When it is necessary to adjust the position of the sliding member 21, the operator can loosen the nut 251 to disengage it from the sliding member 21, and then move the sliding member 21 to the desired position. After adjusting to the appropriate position, the nut 251 is tightened to engage with the limiting block 253 to fix the sliding member 21 to the base 24. This structure makes the position adjustment of the slider 21 of the tightening angle adjustment device more flexible and convenient, while also ensuring the stability of the slider 21 during operation.

[0029] In one embodiment, please refer to Figure 3 The screw drive rod 222 includes a rotating drum 223 and a screw sleeve 224. One end of the rotating drum 223 is connected to a motor 221, and the other end is detachably connected to the screw sleeve 224 via a screw. The end of the screw sleeve 224 away from the rotating drum 223 has a groove for engaging the screw head. The screw-tightening component 22 provided in this embodiment facilitates the disassembly and replacement of the screw sleeve 224, allowing for the selection of different specifications of screw sleeves 224 according to different tightening requirements. The groove on the screw sleeve 224 can firmly engage the screw head of the vehicle component to complete the screw-tightening operation.

[0030] In one embodiment, please refer to Figure 1The screw-tightening assembly 2 is arranged around the center of the turntable 12. This embodiment, by setting multiple screw-tightening assemblies 2, enables the simultaneous tightening of multiple screws, greatly improving work efficiency. In practical use, multiple screw-tightening assemblies 2 can be rationally arranged according to the number and location of the screws to be tightened, allowing them to simultaneously reach different tightening points and achieve multi-point synchronous tightening, thereby meeting the tightening requirements of complex workpieces.

[0031] To better understand this utility model, the following is combined with... Figures 1 to 5 The technical solution of this utility model is described in detail below: The turntable 12 of the four-axis tightening angle adjustment device provided by this utility model is rotatably connected to the machine base 11. The sliding member 21 of the screw tightening assembly 2 is slidably disposed on the turntable 12 along the radial direction of the turntable 12, and the motor 221 of the screw tightening assembly 1 is disposed on the sliding member 12. This structure allows the screw tightening assembly 2 to not only slide radially along the turntable 12, but also change its angle as the turntable 12 rotates, thereby enabling flexible screw tightening work on a circular rotating station. This breaks the limitation of traditional screw tightening devices that can only adjust the position along a straight line, greatly expands the adjustment range, and effectively solves the problem that existing technologies are difficult to apply to screw tightening on a circular rotating station.

[0032] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A four-axis tightening angle adjustment device, characterized in that, include: A machine assembly includes a machine base and a turntable, the turntable being rotatably connected to the machine base; and A screw-tightening assembly includes a slider and a screw-tightening component. The slider is slidably disposed on the turntable along the radial direction of the turntable. The screw-tightening component includes a motor and a screw drive rod connected to each other. The motor is disposed on the slider.

2. The four-axis tightening angle adjustment device according to claim 1, characterized in that, The machine tool assembly also includes a meshing fixed gear ring and a gear drive component. The fixed gear ring is fixedly mounted on the machine tool, and the gear drive component is rotatably mounted on the turntable. When the gear drive component rotates, it can drive the turntable to rotate relative to the machine tool through meshing reaction force.

3. The four-axis tightening angle adjustment device according to claim 2, characterized in that, The machine assembly also includes a centrifugal rocker arm, which is connected to the gear drive and can drive the gear drive to rotate when subjected to external force.

4. The four-axis tightening angle adjustment device according to claim 1, characterized in that, The machine assembly also includes a first limiting member, which is disposed on the machine and can lock or unlock the turntable.

5. The four-axis tightening angle adjustment device according to claim 4, characterized in that, The first limiting component includes a fixing block and a first tightening screw. The fixing block is disposed on the machine base, and the first tightening screw is threaded through the fixing block. The turntable has a positioning hole, and the part of the first tightening screw that passes through the fixing block is detachably inserted into the positioning hole.

6. The four-axis tightening angle adjustment device according to claim 1, characterized in that, The machine assembly also includes a guide post located at the center of the turntable. The guide post has a circular guide circumferential surface on its side. The screw tightening assembly also includes a guide member located on the turntable. The end of the guide member has an arc-shaped groove that fully fits the guide circumferential surface.

7. The four-axis tightening angle adjustment device according to claim 6, characterized in that, The guide member has a through slot, the length of which is arranged radially along the turntable. The slider is slidably disposed in the through slot, and the screw drive rod passes through the through slot.

8. The four-axis tightening angle adjustment device according to claim 1, characterized in that, The screw tightening assembly also includes a base and a second tightening screw. The second tightening screw includes a nut, a screw rod, and a limiting block connected together. One end of the screw rod is fixedly connected to the limiting block, and the limiting block is snapped into the base. The screw rod passes through the sliding member, and the nut is threadedly connected to the screw rod and can cooperate with the limiting block to abut against or disengage from the sliding member when rotating.

9. The four-axis tightening angle adjustment device according to claim 1, characterized in that, The screw drive rod includes a rotating drum and a screw sleeve. One end of the rotating drum is connected to the motor, and the other end is detachably connected to the screw sleeve by a screw. The end of the screw sleeve away from the rotating drum has a groove for engaging the screw head.

10. The four-axis tightening angle adjustment device according to claim 1, characterized in that, The number of screw-tightening assemblies is multiple, and the multiple screw-tightening assemblies are arranged around the center of the turntable.

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