A multi-station drilling and tapping machine for fastener production

Abstract

This invention discloses a multi-station drilling and tapping machine for fastener production, relating to the field of fastener manufacturing and processing technology. It includes a housing, a short shaft rotatably mounted on the top surface of the housing, a worktable fixed to the top of the short shaft, multiple fixing mechanisms on the top of the worktable, a drive motor at the bottom of the short shaft, and two uprights fixedly mounted on one side and the rear of the top surface of the housing, respectively. Each upright has an adjustment mechanism, and a support frame is mounted on the adjustment mechanism. One support frame houses a drilling machine, and the other a tapping machine. A dust collection mechanism is mounted on the support frame. This invention, through the use of the dust collection mechanism, can accurately and efficiently suck up metal debris generated during drilling and tapping, avoiding debris splashing that pollutes the environment and affects processing accuracy. The sucked-up debris is collected into a dust collection box via an air duct, achieving centralized debris processing and reducing manual cleaning workload.

Description

Technical Field

[0001] This invention relates to the field of fastener manufacturing and processing technology, and in particular to a multi-station drilling and tapping machine for fastener manufacturing. Background Technology

[0002] Multi-station drilling and tapping machines are specialized automated / semi-automated metal processing equipment that integrates multiple independent processing stations and can sequentially complete multiple cutting processes such as workpiece drilling and internal thread tapping on a single machine. They are core equipment for the mass production of fasteners, hardware connectors, and precision mechanical parts. Their core feature is that the workpiece is precisely moved between different processing stations through a station transfer mechanism (rotary turntable / linear slide). With the drilling and tapping power heads independently set for the corresponding stations, the entire process of loading, drilling, tapping, and unloading can be completed simultaneously, replacing the traditional single drilling and tapping machine's sequential processing mode and achieving efficient and high-precision mass production of workpieces.

[0003] In the fastener manufacturing process, drilling and tapping are core processes. Existing drilling and tapping equipment generates a large amount of metal chips during high-speed cutting of fasteners by the drill bit and tapping head. However, existing equipment relies solely on simple collection troughs around the worktable for chip collection, lacking active negative pressure suction. Metal chips generated during drilling and tapping are easily splashed as the processing head rotates at high speed, scattering onto the worktable surface, equipment gaps, and the floor, failing to collect in the collection troughs. This results in incomplete chip collection and increases the difficulty of subsequent cleaning. Furthermore, the splashed chips are easily... When debris falls into grooves and gaps, it accumulates and becomes difficult to clean. This not only affects the sliding accuracy of the fixing mechanism but can also cause parts to jam or wear. This increases equipment maintenance costs and indirectly reduces the overall effectiveness of debris collection, creating a vicious cycle of "debris residue, equipment failure, and even more inconvenient collection." Therefore, the problem of inconvenient debris collection not only pollutes the fastener processing environment and affects the cleanliness of the processing site but also affects the processing accuracy of fasteners due to debris residue. At the same time, it significantly increases the workload of manual cleaning and equipment maintenance, reducing the overall production efficiency of fastener drilling and tapping. Summary of the Invention

[0004] In order to solve the problems in the background art, the present invention proposes a multi-station drilling and tapping machine for fastener production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A multi-station drilling and tapping machine for fastener production includes a housing and further includes: A short shaft is rotatably mounted on the top surface of the housing. A worktable is fixedly connected to the top of the short shaft. The top of the worktable is provided with multiple fixing mechanisms for fastening fasteners. A drive motor is provided at the bottom of the short shaft. The uprights are fixedly installed on one side of the top surface and the rear end of the box, respectively. Each upright is equipped with an adjustment mechanism and a support frame. One of the support frames is equipped with a drilling machine and the other support frame is equipped with a tapping machine. A dust collection mechanism, mounted on a support frame, is used to collect metal debris generated during drilling and tapping.

[0006] Preferably, the dust collection mechanism includes an air suction box fixed to each support frame and a dust collection box installed on the bottom surface of the box body, and the air suction box and the dust collection box are connected by an air guide pipe; The dust collection box has two circular holes, and an air suction machine is installed in each of the circular holes.

[0007] Preferably, the air inlet of the air intake box is tilted towards the drill bit of the drilling machine and the tapping head of the tapping machine.

[0008] Preferably, a filter screen is installed at the air inlet end of the aspirator.

[0009] Preferably, a connecting shaft is fixedly connected to the drive shaft of the inhaler, the connecting shaft movably passes through the filter screen and is fixedly connected to a scraper, the scraper contacting the filter screen.

[0010] Preferably, the fixing structure includes a fixing plate fixed to the edge of the top surface of the workbench and a support plate fixed to the top surface of the workbench. A miniature electric telescopic rod is fixedly installed on the support plate, and a movable fixing plate is fixedly connected to the movable end of the miniature electric telescopic rod. The movable fixing plate is slidably disposed with respect to the top surface of the workbench.

[0011] Preferably, a sliding groove is provided on the top surface of the workbench, and a slider that cooperates with the sliding groove is fixedly connected to the bottom surface of the movable fixed plate, and the slider is slidably disposed in the sliding groove.

[0012] Preferably, a rectangular cavity is formed on one side of the slide groove, and a baffle is slidably arranged in the rectangular cavity, with one end of the baffle being fixedly connected to the slider.

[0013] Preferably, the adjustment mechanism includes a linear motor fixedly installed on the top surface of the support frame, a connecting frame on the linear motor, an electric push rod fixedly installed on the bottom surface of the connecting frame, and the movable end of the electric push rod fixed to the support frame.

[0014] Preferably, the two uprights are distributed at an angle on the top surface of the box.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This invention, through the use of a dust extraction mechanism, can accurately and efficiently suck up metal shavings generated during drilling and tapping, avoiding shavings splashing and polluting the environment and affecting processing accuracy. The sucked-up shavings are collected in a dust collection box through an air duct, achieving centralized processing of shavings and reducing manual cleaning workload. At the same time, the filter screen at the air intake end of the suction machine can prevent fine shavings from entering the equipment and causing wear, extending the service life of the suction machine. Furthermore, the scraper driven by the suction machine's drive shaft can scrape off shavings on the filter screen in real time, preventing filter screen blockage and ensuring unobstructed dust extraction channels. This eliminates the need for frequent manual disassembly and cleaning of the filter screen, further reducing the workload of equipment maintenance. 2. The fixing mechanism of the present invention consists of a fixed plate, a movable fixed plate, and a miniature electric telescopic rod. The movable fixed plate is driven to slide by the miniature electric telescopic rod, which can clamp and fix fasteners of different specifications and sizes. There is no need to replace the special fixing fixtures for different specifications of fasteners, which greatly improves the versatility of the equipment, reduces the use and maintenance costs of the equipment, and adapts to diverse fastener processing needs. The use of the rectangular cavity and the baffle makes it easy to shield the slide groove, preventing metal chips generated during fastener processing from falling into the slide groove, which is conducive to the collection or cleaning of metal chips. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure from a frontal view provided according to an embodiment of the present invention is shown; Figure 2 A schematic cross-sectional view of the structure provided in an embodiment of the present invention is shown; Figure 3 A schematic diagram of the adjustment structure provided according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the fixing mechanism provided according to an embodiment of the present invention is shown; Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6 A schematic diagram of the structure of a suction machine provided according to an embodiment of the present invention is shown.

[0017] Legend: 1. Housing; 2. Workbench; 3. Stand; 4. Support frame; 5. Air duct; 6. Suction box; 7. Tapping machine; 8. Drilling machine; 9. Dust collection box; 10. Suction machine; 11. Drive motor; 12. Connecting frame; 13. Linear motor; 14. Electric actuator; 15. Short shaft; 16. Fixed plate; 17. Movable fixed plate; 18. Support plate; 19. Miniature electric telescopic rod; 20. Rectangular cavity; 21. Baffle; 22. Slide groove; 23. Slider; 24. Scraper; 25. Connecting shaft; 26. Filter screen. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 - Figure 6 The present invention provides a technical solution: A multi-station drilling and tapping machine for fastener production includes a housing 1, which is integrally cast from high-strength cast iron and has a hollow internal structure. The external surface is treated with rust prevention, such as by spraying rust-preventive paint. It also includes: The short shaft 15 is rotatably mounted on the top surface of the housing 1. A worktable 2 is fixedly connected to the top of the short shaft 15. The worktable 2 is a circular plate structure made of aluminum alloy, and its top surface is precision ground to ensure flatness. The circular structure facilitates the rotation of the worktable 2 around the short shaft 15, enabling cyclic switching between multiple workstations. The top of the worktable 2 is equipped with multiple fixing mechanisms for fastener fixation. These mechanisms facilitate clamping and fixing of the fasteners being processed, preventing them from shaking during processing and improving the accuracy of fastener processing. A drive motor 11 is located at the bottom of the short shaft 15, and the drive motor 11 is mounted on the top surface inside the housing 1 via a motor bracket for controlling the operation of the drive motor 11. Support; the drive motor 11 is a servo motor, fixedly installed on the inner bottom surface of the housing 1, and electrically connected to the external control system through wires, enabling forward and reverse rotation and speed adjustment; the servo motor has the characteristics of precise speed, fast response speed, and smooth start and stop, which can accurately control the rotation angle and speed of the worktable 2, ensuring that each fixed structure can accurately align with the processing position of the drilling machine 8 or tapping machine 7, improving processing accuracy; the speed adjustment function can adjust the switching speed of the worktable 2 according to the specifications of the fasteners and the processing process requirements, adapting to different processing scenarios; the forward and reverse rotation function facilitates the cyclic rotation of the worktable 2 without manual adjustment of direction, improving the automation level of the equipment and reducing manual operation.

[0020] Two uprights 3 are provided, both welded from high-strength steel, forming a door frame structure. The two uprights 3 are fixed to one side and the rear end of the top surface of the housing 1 by expansion bolts, and are distributed at 90° on the top surface of the housing 1. The inner side of the uprights 3 has reserved installation space for the adjustment mechanism. The 90° distribution of the two uprights 3 corresponds to the distribution of the fixed structure on the workbench 2, which can realize the staggered arrangement of the drilling and tapping processes. When the workbench 2 rotates 90°, the fastener that has been drilled can be precisely moved under the tapping machine 7 for tapping, realizing the continuous connection of the process and further improving the processing efficiency. Each upright 3 is equipped with an adjustment mechanism, which facilitates the adjustment of the position of the drilling machine 8 and the tapping machine 7, thereby facilitating the processing of the fasteners. The adjustment mechanism is equipped with a support frame 4, one of which is equipped with the drilling machine 8 and the other with the tapping machine 7. The dust collection mechanism, mounted on the support frame 4, is used to collect metal shavings generated during drilling and tapping, preventing shavings from scattering and polluting the processing environment, while reducing the amount of manual shavings cleaning and improving processing efficiency.

[0021] In this invention, the dust collection mechanism includes an air intake box 6 fixed to each support frame 4. The air intake of the air intake box 6 is funnel-shaped and tilted towards the drill bit of the drilling machine 8 and the tapping head of the tapping machine 7. The funnel-shaped air intake of the air intake box 6 can increase the air intake range. The tilted design towards the drill bit and tapping head can accurately target the area where drilling and tapping generate metal chips, ensuring that the chips can be efficiently sucked in and preventing chips from splashing onto the workbench 2, the surface of fasteners, or the inside of the equipment, affecting the processing accuracy and equipment operation. A dust collection box 9 is installed on the bottom surface of the housing 1, and the air intake box 6 and the dust collection box 9 are connected by an air guide pipe 5. The dust collection box 9 has two circular holes, and each circular hole is equipped with a suction machine 10. The suction machine 10 provides negative pressure suction, and transports the metal debris sucked in by the suction box 6 to the dust collection box 9 through the air guide pipe 5, so as to realize the centralized collection of debris, avoid debris scattering and polluting the processing environment, reduce the workload of manual debris cleaning, and improve processing efficiency. The two suction machines 10 correspond to the two suction boxes 6 respectively, and can provide dust suction power for drilling and tapping processes respectively, so that the dust suction effect is more stable and efficient.

[0022] In this invention, a filter screen 26 is installed at the air intake end of the suction machine 10. The filter screen 26 can filter the metal debris inhaled, preventing fine debris from entering the inside of the suction machine 10 and wearing down the impeller, drive shaft and other components of the suction machine 10, thus extending the service life of the suction machine 10. At the same time, it prevents debris from being discharged from the suction machine 10 and polluting the environment again. The stainless steel woven mesh material has high strength, wear resistance and is easy to clean, making it suitable for long-term use.

[0023] In this invention, a connecting shaft 25 is fixedly connected to the drive shaft of the suction machine 10. The connecting shaft 25 movably passes through the filter screen 26 and is fixedly connected to a scraper 24. The scraper 24 contacts the filter screen 26. When the drive shaft of the suction machine 10 rotates, it will drive the connecting shaft 25 and the scraper 24 to rotate synchronously. The scraper 24 is in close contact with the filter screen 26, which can scrape off the metal debris attached to the filter screen 26 in real time, avoid the filter screen 26 from being blocked, ensure the smooth flow of the suction channel, and ensure the stability of the suction effect. There is no need for frequent manual disassembly and cleaning of the filter screen 26, reducing the workload of equipment maintenance. The rubber scraper 24 can avoid scratching the filter screen 26, and at the same time, the scraping effect is better, and it can thoroughly scrape off the fine debris on the surface of the filter screen 26.

[0024] In this invention, the fixing structure includes a fixing plate 16 fixed to the edge of the top surface of the workbench 2 and a support plate 18 fixed to the top surface of the workbench 2 by bolts. A miniature electric telescopic rod 19 is fixedly installed on the support plate 18. A movable fixing plate 17 is fixedly connected to the movable end of the miniature electric telescopic rod 19. The movable fixing plate 17 is slidably disposed with the top surface of the workbench 2. The fixing plate 16 and the movable fixing plate 17 cooperate to achieve clamping and fixing of fasteners of different specifications and sizes under the drive of the miniature electric telescopic rod 19. It has strong versatility and is beneficial to the processing of fasteners. The driving method of the miniature electric telescopic rod 19 has a high degree of automation, does not require manual adjustment, can accurately control the clamping force, reduce the amount of manual operation, and improve processing efficiency.

[0025] In this invention, a groove 22 is provided on the top surface of the workbench 2, and a slider 23 that cooperates with the groove 22 is fixedly connected to the bottom surface of the movable fixing plate 17, and the slider 23 is slidably disposed in the groove 22. Through the cooperation of the slider 23 and the groove 22, the sliding direction of the movable fixing plate 17 can be accurately guided, avoiding the displacement of the movable fixing plate 17 when sliding, ensuring that the movable fixing plate 17 and the fixing plate 16 always remain parallel, thereby ensuring the fixing accuracy of the fastener.

[0026] In this invention, a rectangular cavity 20 is provided on one side of the slide groove 22, and a baffle 21 is slidably provided in the rectangular cavity 20. One end of the baffle 21 is fixedly connected to the slider 23. Through the cooperation of the rectangular cavity 20 and the baffle 21, the slide groove 22 is easily shielded, preventing metal debris generated during fastener processing from falling into the slide groove 22, which is beneficial for the collection or cleaning of metal debris.

[0027] In this invention, the adjustment mechanism includes a linear motor 13, a connecting frame 12, and an electric actuator 14. The linear motor 13 is fixedly mounted on the inner top surface of the support frame 3 by bolts. The linear motor 13 can drive the connecting frame 12, the electric actuator 14, the support frame 4, and the corresponding drilling machine 8 or tapping machine 7 to move horizontally, thereby realizing the horizontal adjustment of the processing position and adapting to the processing requirements of fasteners of different specifications, such as fasteners of different lengths and hole positions, thus improving the versatility of the equipment. The slider of the linear motor 13 slides horizontally along the length direction of the support frame 3. The connecting frame 12 has a U-shaped structure and is fixedly connected to the slider of the linear motor 13 by bolts. The electric actuator 14 is fixedly mounted on the inner surface of the connecting frame 12 by bolts. On the bottom surface, its movable end points vertically downward and is fixedly connected to the support frame 4 by bolts. The electric actuator 14 can drive the support frame 4 and the corresponding drilling machine 8 or tapping machine 7 to move vertically, thereby adjusting the processing height. It can precisely adjust the distance between the drill bit of the drilling machine 8 and the tapping head of the tapping machine 7 and the fastener according to the thickness of the fastener, the drilling depth, and the tapping depth requirements, ensuring the accuracy of the processing dimensions. Through the coordinated work of the linear motor 13 and the electric actuator 14, the drilling machine 8 and the tapping machine 7 can be flexibly adjusted in both horizontal and vertical directions without the need for manual adjustment of the equipment position. This results in a high degree of automation, reduces the amount of manual operation, and provides high adjustment accuracy, avoiding processing defects caused by manual adjustment errors.

[0028] Working principle: When using this invention, the equipment is first started through the external control system. The fasteners to be processed are placed on multiple fixed structures on the workbench 2. The micro electric telescopic rod 19 is started to drive the movable fixed plate 17 to move towards the fixed plate 16 until the fasteners are firmly clamped. Then, the drive motor 11 is started, driving the short shaft 15 and the worktable 2 to rotate, rotating one of the fasteners on the fixed structure to below the drilling machine 8. The position of the drilling machine 8 is adjusted by the linear motor 13 and electric push rod 14 of the adjustment mechanism, so that its drill bit is aligned with the drilling position of the fastener. The drilling machine 8 is started to perform drilling. At the same time, the corresponding air suction machine 10 is started, sucking in the metal debris generated by drilling through the air suction box 6, and transporting it to the dust collection box 9 through the air guide pipe 5. The filter screen 26 filters the debris, and the scraper 24 cleans the filter screen 26 in real time. After drilling is completed, the drive motor 11 drives the worktable 2 to rotate 90°, moving the completed fastener to below the tapping machine 7. The position of the tapping machine 7 is adjusted by the adjustment mechanism, and the tapping machine 7 is started to perform tapping. At the same time, the corresponding air suction machine 10 is started to collect the debris generated by tapping. Meanwhile, the operator can place the fastener to be processed on the empty fixed structure to realize continuous cycle operation of loading, drilling, tapping and unloading.

[0029] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-station drilling and tapping machine for fastener production, comprising a housing (1), characterized in that, Also includes: A short shaft (15) is rotatably mounted on the top surface of the housing (1). A workbench (2) is fixedly connected to the top of the short shaft (15). The top of the workbench (2) is provided with multiple fixing mechanisms for fastener fixing. A drive motor (11) is provided at the bottom of the short shaft (15). The two uprights (3) are respectively fixedly installed on one side of the top surface and the rear end of the box (1). Each upright (3) is provided with an adjustment mechanism and a support frame (4) is provided on the adjustment mechanism. One of the support frames (4) is provided with a drilling machine (8) and the other support frame (4) is provided with a tapping machine (7). A dust collection mechanism is mounted on a support frame (4) and is used to collect metal debris generated during drilling and tapping.

2. The multi-station drilling and tapping machine for fastener production according to claim 1, characterized in that, The dust collection mechanism includes an air suction box (6) fixed on each support frame (4) and a dust collection box (9) installed on the bottom surface of the box body (1). The air suction box (6) and the dust collection box (9) are connected by an air guide pipe (5). The dust collection box (9) has two circular holes, and each circular hole is equipped with an air suction machine (10).

3. A multi-station drilling and tapping machine for fastener production according to claim 2, characterized in that, The air inlet of the air intake box (6) is tilted toward the drill bit of the drilling machine (8) and the tapping head of the tapping machine (7).

4. A multi-station drilling and tapping machine for fastener production according to claim 2, characterized in that, The intake end of the inhaler (10) is equipped with a filter screen (26).

5. A multi-station drilling and tapping machine for fastener production according to claim 4, characterized in that, A connecting shaft (25) is fixedly connected to the drive shaft of the inhaler (10). The connecting shaft (25) movably passes through the filter screen (26) and is fixedly connected to a scraper (24). The scraper (24) contacts the filter screen (26).

6. A multi-station drilling and tapping machine for fastener production according to claim 1, characterized in that, The fixed structure includes a fixed plate (16) fixed to the edge of the top surface of the workbench (2) and a support plate (18) fixed to the top surface of the workbench (2). A miniature electric telescopic rod (19) is fixedly installed on the support plate (18). A movable fixed plate (17) is fixedly connected to the movable end of the miniature electric telescopic rod (19). The movable fixed plate (17) is slidably disposed with the top surface of the workbench (2).

7. A multi-station drilling and tapping machine for fastener production according to claim 6, characterized in that, The workbench (2) has a slide groove (22) on its top surface, and a slider (23) that cooperates with the slide groove (22) is fixedly connected to the bottom surface of the movable fixed plate (17), and the slider (23) is slidably disposed in the slide groove (22).

8. A multi-station drilling and tapping machine for fastener production according to claim 7, characterized in that, A rectangular cavity (20) is provided on one side of the slide groove (22), and a baffle (21) is slidably provided in the rectangular cavity (20). One end of the baffle (21) is fixedly connected to the slider (23).

9. A multi-station drilling and tapping machine for fastener production according to claim 1, characterized in that, The adjustment mechanism includes a linear motor (13) fixedly installed on the inner top surface of the upright frame (3). A connecting frame (12) is provided on the linear motor (13). An electric push rod (14) is fixedly installed on the inner bottom surface of the connecting frame (12). The movable end of the electric push rod (14) is fixed to the support frame (4).

10. A multi-station drilling and tapping machine for fastener production according to claim 1, characterized in that, The two uprights (3) are distributed at 90° on the top surface of the box (1).

Images