Multi-station hexagon nut tapping machine

Abstract

The utility model discloses a multi-station hexagon nut tapping machine which comprises a machine frame, a multi-station rotating disc is installed on the machine frame, the multi-station rotating disc is provided with a plurality of stations, and station switching is achieved through rotation of the multi-station rotating disc. A plurality of clamping mechanisms surrounding the center are arranged on the multi-station rotary table, the clamping mechanisms are divided into two groups and correspond to tapping stations and feeding and discharging stations respectively, meanwhile, the number of the tapping stations is the same as that of the feeding and discharging stations, and switching of the clamping mechanisms between the tapping stations and the feeding and discharging stations can be achieved by rotating one station through the multi-station rotary table; through the multi-station rotary table, switching of a tapping station, a feeding and discharging station and a discharging station can be achieved, and efficiency is high; the number of the discharging stations is the same as that of the tapping stations and that of the feeding and discharging stations, synchronous station switching can be completed through rotation, synchronous discharging of a batch of machined workpieces is achieved, and efficiency is high; the multi-station rotary table is matched with the feeding and discharging mechanism to complete automatic feeding and discharging of the workpieces, and the machining efficiency is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of tapping technology, specifically relating to a multi-station hexagonal nut tapping machine. Background Technology

[0002] A hex nut is a standard fastener with a regular hexagonal shape and an internal thread in the center. It is used in conjunction with a bolt or screw to apply pressure through rotation, thereby tightly connecting two or more components. Hex nuts are one of the most basic fasteners in the industrial field, covering almost all scenarios that require detachable connections.

[0003] Hexagonal nuts require tapping during processing. Traditional tapping machines have a simple structure, which affects the production process. Furthermore, the limited number of tapping stations results in low efficiency during batch processing, increasing worker workload. To address this, Chinese patent document CN221134357 U discloses a multi-station tapping machine. This machine features multiple stations around its indexing plate and multiple tapping main units, with the number of main units not exceeding the number of stations. Each tapping main unit corresponds to one station. The indexing plate rotates clockwise or counterclockwise, and workpieces on the plate sequentially pass through all the stations. During the rotation of the indexing plate, the tapping main units perform tapping operations on the workpieces on the operating table, machining threads inside the holes of the workpieces. Because there are multiple stations around the indexing plate, multiple workpieces can be placed on it. As the indexing plate rotates, each workpiece sequentially passes through all the stations, achieving efficient batch processing and reducing worker workload.

[0004] However, the above technical solution has the following drawbacks: 1. It can only discharge material through one discharge station, so when the material is discharged, the other remaining stations need to wait, which further affects the overall processing efficiency; 2. It cannot achieve automatic feeding, resulting in low automation efficiency. Utility Model Content

[0005] This utility model provides a multi-station hexagonal nut tapping machine. Through a multi-station turntable, it can switch between tapping, loading / unloading, and unloading stations, resulting in high efficiency. The number of unloading stations is the same as the number of tapping and loading / unloading stations, and synchronous station switching can be achieved through rotation, enabling simultaneous unloading of a batch of processed workpieces, further improving efficiency. The multi-station turntable, in conjunction with a loading / unloading mechanism, enables automatic loading and unloading of workpieces, further improving processing efficiency and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-station hexagonal nut tapping machine, including a frame, a multi-station turntable mounted on the frame, multiple stations arranged around the center on the multi-station turntable, and the multi-station turntable achieves station switching by rotation;

[0007] The multi-station turntable contains multiple clamping mechanisms arranged around the center. The clamping mechanisms are divided into two groups, corresponding to the tapping station and the loading / unloading station respectively. The number of tapping stations is the same as the number of loading / unloading stations. The clamping mechanism can be switched between the tapping station and the loading / unloading station by rotating the multi-station turntable by one station.

[0008] The top of the frame is equipped with a support frame, on which a tapping mechanism and a loading / unloading mechanism are mounted, corresponding to the multi-station turntable. The tapping mechanism corresponds one-to-one with the tapping station, and the loading / unloading mechanism corresponds one-to-one with the loading / unloading station.

[0009] Preferably, the tapping mechanism includes a telescopic cylinder mounted on the top of the support frame. The piston rod of the telescopic cylinder passes through the support frame and is fixedly connected to a mounting plate. A tapping motor is fixed on the mounting plate, and a tapping tap is fixed to the output end of the tapping motor after passing through the mounting plate.

[0010] Preferably, the top of the mounting plate is provided with a positioning rod, and the support frame is provided with a positioning hole for the positioning rod to pass through.

[0011] Preferably, the loading and unloading mechanism is also mounted on the mounting plate, including a servo cylinder. The piston rod of the servo cylinder passes through the mounting plate and is fixed to the loading and unloading cylinder. The bottom end of the loading and unloading cylinder is provided with three positioning claws. The loading and unloading cylinder controls the movement of the positioning claws relative to the center.

[0012] Preferably, the clamping mechanisms are all pneumatic clamps, which are connected to an external pneumatic control device via a connecting pipe. The external pneumatic control device controls the grippers of the pneumatic clamps to achieve tightening or loosening movements.

[0013] Preferably, a rotating shaft is mounted at the center of the bottom surface of the multi-station turntable. The rotating shaft is rotatably mounted on the frame via bearings. A driven gear is fixed at the bottom end of the rotating shaft. A reciprocating motor is mounted on the frame, and a gear that meshes with the driven gear is fixed at the output end of the reciprocating motor.

[0014] Preferably, the multi-station turntable is also provided with a discharge mechanism, which includes a discharge trough that passes through the edge of the multi-station turntable and is inclined outward and downward. The number of discharge mechanisms corresponds to the number of loading and unloading stations. By rotating the multi-station turntable by one station, the clamping mechanism can be switched between the loading and unloading station and the discharge mechanism.

[0015] Preferably, the bottom surface of the multi-station turntable is further provided with a support mechanism, which includes multiple support seats around the center. Each support seat has a hemispherical groove, and a ball is installed in the hemispherical groove. The bottom surface of the multi-station turntable is provided with a ball groove, and the top of the ball rests in the ball groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The multi-station turntable allows for switching between tapping, loading / unloading, and unloading stations, resulting in high efficiency.

[0018] 2. The number of unloading stations is the same as the number of tapping stations and loading / unloading stations. The stations can be switched synchronously by rotation, so as to realize the synchronous unloading of a batch of processed workpieces, which is highly efficient.

[0019] 3. The multi-station turntable, in conjunction with the loading and unloading mechanism, can automatically load and unload workpieces, further improving processing efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a top view of the multi-station turntable structure of this utility model;

[0022] Figure 3 This is a bottom view schematic diagram of the mounting plate, tapping mechanism, and loading / unloading mechanism of this utility model;

[0023] Figure 4 This is a cross-sectional view of the support base and ball bearings of this utility model.

[0024] Figure 5 This is a bottom view of the multi-station turntable structure of this utility model.

[0025] In the diagram: 1. Multi-station turntable; 2. Clamping mechanism; 3. Tapping station; 4. Loading / unloading station; 5. Support frame; 6. Telescopic cylinder; 7. Mounting plate; 8. Tapping motor; 9. Tapping tap; 10. Positioning rod; 11. Servo cylinder; 12. Loading / unloading cylinder; 13. Positioning claw; 14. Connecting pipe; 15. Driven gear; 16. Reciprocating motor; 17. Gear; 18. Discharge chute; 19. Support base; 20. Ball bearing; 21. Ball bearing groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 This utility model provides a multi-station hexagonal nut tapping machine, including a frame, on which a multi-station turntable 1 is mounted. Multiple workstations are arranged around the center of the multi-station turntable 1, and the workstations are switched by rotating the multi-station turntable 1.

[0028] The multi-station turntable 1 includes multiple clamping mechanisms 2 arranged around the center. The clamping mechanisms 2 are divided into two groups, corresponding to the tapping station 3 and the loading / unloading station 4, respectively. The number of tapping stations 3 is the same as the number of loading / unloading stations 4. By rotating the multi-station turntable 1 by one station, the clamping mechanism 2 can switch between the tapping station 3 and the loading / unloading station 4. Thus, after the workpiece is clamped on the clamping mechanism 2, tapping can be performed. After the machining is completed, the turntable 1 can be rotated by one station so that the machined workpiece can be further processed at the loading / unloading station 4. Similarly, by rotating the multi-station turntable 1 by one station in the opposite direction, the material clamped by the clamping mechanism 2 at the loading / unloading station 4 can be moved to the tapping station 3 for processing.

[0029] The top of the frame is equipped with a support frame 5, on which a tapping mechanism and a loading / unloading mechanism are mounted, corresponding to the multi-station turntable 1. The tapping mechanism corresponds one-to-one with the tapping station 3, and the loading / unloading mechanism corresponds one-to-one with the loading / unloading station 4. Preferably, to further improve the processing accuracy, the multi-station turntable 1 can be equipped with a positioning mechanism, which is a conventional mechanism and is not limited. For example, a positioning cylinder can be installed under the frame. The positioning cylinder has a positioning component installed through the piston rod of the frame. The multi-station turntable 1 has multiple positioning slots that are adapted to the positioning component. The positioning cylinder achieves positioning and separation by driving the positioning component in and out of the positioning slot.

[0030] Specifically, the tapping mechanism includes a telescopic cylinder 6 mounted on the top of the support frame 5. The piston rod of the telescopic cylinder 6 passes through the support frame 5 and is fixedly connected to a mounting plate 7. A tapping motor 8 is fixed on the mounting plate 7, and a tapping tap 9 is fixed to the output end of the tapping motor 8 after passing through the mounting plate 7. In this embodiment, the telescopic cylinder 6 drives the mounting plate 7 to rise and fall, which in turn drives the tapping motor 8 to rise and fall. Furthermore, the tapping motor 8 drives the tapping tap 9 to tap the inner hole of the nut on the tapping station 3 below through the rising and falling motion.

[0031] Specifically, the top of the mounting plate 7 is provided with a positioning rod 10, and the support frame 5 is provided with a positioning hole through which the positioning rod 10 passes; in this embodiment, the positioning rod 10, in conjunction with the positioning hole, achieves stability when the telescopic cylinder 6 drives the mounting plate 7 to rise and fall.

[0032] Specifically, the loading and unloading mechanism is also mounted on the mounting plate 7, including a servo cylinder 11. The piston rod of the servo cylinder 11 passes through the mounting plate 7 and is fixed to the loading and unloading cylinder 12. The bottom end of the loading and unloading cylinder 12 is provided with three positioning claws 13. The loading and unloading cylinder 12 controls the movement of the positioning claws 13 relative to the center. In this embodiment, the servo cylinder 11 drives the loading and unloading cylinder 12 to lift and lower, thereby realizing loading and unloading. When loading is required, the loading and unloading cylinder 12 drives the positioning claws 13 to move outward to support the inner hole of the nut to be tapped, and then places it on the clamping mechanism 2. Then the loading and unloading cylinder 12 drives the positioning claws 13 to move towards the center to disengage from the inner hole to be tapped, and then the servo cylinder 11 drives the loading and unloading cylinder 12 to reset. The same principle can be used to unload the workpiece after tapping.

[0033] Specifically, the clamping mechanisms 2 are all pneumatic clamps, which are connected to an external pneumatic control device through a connecting pipe 14. The external pneumatic control device controls the grippers of the pneumatic clamps to achieve tightening or loosening movements. In this embodiment, the external pneumatic control device controls the grippers of the pneumatic clamps to achieve tightening or loosening movements, thereby achieving positioning clamping or loosening after the nut workpiece is placed.

[0034] Specifically, the multi-station turntable 1 has a rotating shaft at its center on its bottom surface. The rotating shaft is rotatably mounted on the frame via bearings. A driven gear 15 is fixed at the bottom end of the rotating shaft. A reciprocating motor 16 is mounted on the frame. A gear 17 that meshes with the driven gear 15 is fixed at the output end of the reciprocating motor 16. In this embodiment, the reciprocating motor 16 drives the gear 17 to rotate in the forward and reverse directions, which in turn drives the multi-station turntable 1 to rotate via the driven gear 15. The reciprocating motion enables the switching between different workstations.

[0035] Specifically, the multi-station turntable 1 is also equipped with a discharge mechanism, which includes a discharge trough 18. The discharge trough 18 passes through the edge of the multi-station turntable 1 and is inclined outward and downward. The number of discharge mechanisms corresponds to the number of loading and unloading stations 4. By rotating the multi-station turntable 1 by one station, the clamping mechanism 2 can be switched between the loading and unloading station 4 and the discharge mechanism. In this embodiment, when the processed workpiece needs to be discharged, the loading and unloading cylinder 12 drives the positioning claw 13 to clamp the workpiece and then drives it to rise through the servo cylinder 11. Then, the multi-station turntable 1 rotates by one station so that the discharge trough 18 corresponds to the lower part of the workpiece. Then, the servo cylinder 11 drives the workpiece to descend to the set height. The loading and unloading cylinder 12 drives the positioning claw 13 to release the workpiece. The workpiece falls into the discharge trough 18 and slides outward and onto the external receiving mechanism or conveying mechanism.

[0036] Specifically, the bottom surface of the multi-station turntable 1 is also provided with a support mechanism, which includes multiple support seats 19 around the center. Each support seat 19 has a hemispherical groove, and a ball bearing 20 is installed in the hemispherical groove. The bottom surface of the multi-station turntable 1 is provided with a ball bearing groove 21, and the top of the ball bearing 20 abuts against the ball bearing groove 21. In this embodiment, the multiple balls bearing 20 provide stable support for the multi-station turntable 1 during reciprocating rotation, thereby reducing friction.

[0037] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0038] Working principle: The multi-station turntable 1 has multiple stations around its center. The multi-station turntable 1 switches between stations by rotating. After the workpiece is clamped on the clamping mechanism 2, it can be tapped. After the tapping is completed, it can rotate one station to allow the workpiece to be further processed at the loading / unloading station 4. Similarly, the multi-station turntable 1 can rotate one station in the opposite direction to allow the workpiece clamped at the loading / unloading station 4 to be processed at the tapping station 3. When the finished workpiece needs to be unloaded, the loading / unloading cylinder 12 drives the positioning claw 13 to support the workpiece and then the servo cylinder 11 drives it to rise. Then the multi-station turntable 1 rotates to make the discharge chute 18 correspond to the bottom of the workpiece. Then the servo cylinder 11 drives the workpiece to fall to the set height. The loading / unloading cylinder 12 drives the positioning claw 13 to release the workpiece. The workpiece falls into the discharge chute 18 and slides outward to the external receiving mechanism or conveying mechanism.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station hexagonal nut tapping machine, comprising a frame, characterized in that, The machine frame is equipped with a multi-station turntable (1), and multiple stations are arranged around the center on the multi-station turntable (1). The multi-station turntable (1) switches stations by rotating. The multi-station turntable (1) contains multiple clamping mechanisms (2) arranged around the center. The clamping mechanisms (2) are divided into two groups, corresponding to the tapping station (3) and the loading / unloading station (4) respectively. At the same time, the number of tapping stations (3) is the same as the number of loading / unloading stations (4). The clamping mechanism (2) can be switched between the tapping station (3) and the loading / unloading station (4) by rotating the multi-station turntable (1) by one station. The top of the frame is equipped with a support frame (5), and the support frame (5) is equipped with a tapping mechanism and a loading / unloading mechanism corresponding to the multi-station turntable (1). The tapping mechanism corresponds one-to-one with the tapping station (3), and the loading / unloading mechanism corresponds one-to-one with the loading / unloading station (4).

2. The multi-station hexagonal nut tapping machine according to claim 1, characterized in that, The tapping mechanism includes a telescopic cylinder (6) mounted on the top of the support frame (5). The piston rod of the telescopic cylinder (6) passes through the support frame (5) and is fixedly connected to a mounting plate (7). A tapping motor (8) is fixed on the mounting plate (7). A tapping tap (9) is fixed to the output end of the tapping motor (8) after passing through the mounting plate (7).

3. A multi-station hexagonal nut tapping machine according to claim 2, characterized in that, The mounting plate (7) has a positioning rod (10) on its top, and the support frame (5) has a positioning hole through which the positioning rod (10) passes.

4. A multi-station hexagonal nut tapping machine according to claim 1, characterized in that, The loading and unloading mechanism is also installed on the mounting plate (7), including a servo cylinder (11). The piston rod of the servo cylinder (11) passes through the mounting plate (7) and is fixed with a loading and unloading cylinder (12). The bottom end of the loading and unloading cylinder (12) is provided with three positioning claws (13). The loading and unloading cylinder (12) controls the movement of the positioning claws (13) relative to the center.

5. A multi-station hexagonal nut tapping machine according to claim 1, characterized in that, The clamping mechanisms (2) are all pneumatic clamps, which are connected to external pneumatic control equipment through connecting pipes (14). The external pneumatic control equipment controls the grippers of the pneumatic clamps to achieve tightening or loosening movements.

6. A multi-station hexagonal nut tapping machine according to claim 1, characterized in that, The multi-station turntable (1) has a rotating shaft at the center of its bottom surface. The rotating shaft is mounted on the frame by a bearing. A driven gear (15) is fixed at the bottom end of the rotating shaft. A reciprocating motor (16) is mounted on the frame. A gear (17) that meshes with the driven gear (15) is fixed at the output end of the reciprocating motor (16).

7. A multi-station hexagonal nut tapping machine according to claim 1, characterized in that, The multi-station turntable (1) is also provided with a discharge mechanism, which includes a discharge trough (18). The discharge trough (18) passes through the edge of the multi-station turntable (1) and is inclined outward and downward. The number of discharge mechanisms corresponds to the number of loading and unloading stations (4). By rotating the multi-station turntable (1) by one station, the clamping mechanism (2) can be switched between the loading and unloading station (4) and the discharge mechanism.

8. A multi-station hexagonal nut tapping machine according to claim 1, characterized in that, The bottom surface of the multi-station turntable (1) is also provided with a support mechanism, which includes multiple support seats (19) around the center. The support seats (19) are provided with hemispherical grooves, and ball bearings (20) are installed in the hemispherical grooves. The bottom surface of the multi-station turntable (1) is provided with ball bearing grooves (21), and the top of the ball bearings (20) rests in the ball bearing grooves (21).

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