High-precision fixing nut machining equipment for aerospace

Abstract

The invention discloses aerospace high-precision fixing nut machining equipment, and relates to the technical field of nut machining equipment, the aerospace high-precision fixing nut machining equipment comprises a machining table and further comprises a treatment table mounted on the machining table, a liftable clamping frame is connected to the top of the treatment table, a toothed nut is clamped to the inner side of the clamping frame, and three buffer blocks are tightly attached to the outer side of the toothed nut; the nut assemblies are formed together; the material guiding assembly is used for conveying the nut assembly; the output end of the machining mechanism is provided with a screw tap and a protection assembly. By arranging the machining mechanism and the shielding ring composed of the baffle and the elastic cloth, the shielding ring is clamped into the gap between the annular teeth on the toothed nut and the nut through the rubber ring and matched with the annular telescopic plate and the traction rope, when the rubber pad abuts against the bottoms of the annular teeth, the shielding ring is opened to form a horn-shaped barrier, and the screw tap is prevented from making contact with the annular teeth; and the impact force caused by accidental deviation of the screw tap is buffered through the elastic cloth, so that the annular teeth of the toothed nut are protected.

Description

Technical Field

[0001] The present invention relates to the technical field of nut processing equipment, and in particular to high-precision fixed nut processing equipment for aerospace. Background Art

[0002] Tapping equipment for nut processing consists of a workbench, a drive component, a tapping tool, and auxiliary mechanisms. It is also equipped with a material guide assembly for conveying the nut, a clamping device for positioning, and a system for cooling and chip removal. The drive component drives the tapping tool to rotate and feed, cutting the nut to form a precise internal thread. It is primarily used in the fastener manufacturing field, covering the production of nuts in general machinery, automobiles, construction, aerospace, and other industries. Traditional tapping equipment requires manual participation in the conveying and fixing of the nuts, which poses certain safety risks. Workers are easily injured by the running tapping tool, and the nuts are also easily damaged during conveying and tapping, resulting in low tapping efficiency.

[0003] In the existing technology, a rotating plate is used to drive the carrier table to rotate and switch the work station, and a positioning block is used to clamp the nut to complete the processing of the nut, thereby ensuring stability during processing, improving processing efficiency and reducing manual operation risks. In this method, there is a lack of protection for the annular teeth on the toothed nut, and the annular teeth are easily damaged during transportation and tapping, affecting the processing quality of the toothed nut; a feeding component is used, through pushing by a push plate, guiding by a sliding frame and an arc panel, conveying by a transmission bin and a discharge pipe, and controlling the discharge rhythm by a baffle, to realize automatic transmission and continuous tapping of the nuts. In this method, there is a lack of protection for the nuts, and multiple nuts are easily damaged by collision during transportation. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that there is a lack of protection for the annular teeth on the toothed nut, which easily damages the annular teeth during transportation and tapping, affecting the processing quality of the toothed nut, and to propose a high-precision fixed nut processing equipment for aerospace.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a high-precision fixed nut processing equipment for aerospace, comprising a processing table, and also comprising:

[0006] The processing table is connected to a lifting frame on the top of the processing table. A toothed nut is clamped on the inner side of the frame. Three buffer blocks are tightly fitted on the outer side of the toothed nut to form a nut assembly.

[0007] A material guide assembly, the material guide assembly is used to convey the nut assembly;

[0008] A processing mechanism, wherein a tap and a protective assembly are installed at the output end of the processing mechanism. The protective assembly includes a liftable annular frame, a shielding ring detachably clamped on the annular frame, and a plurality of rubber pads movably connected thereto. The middle part of the shielding ring is connected to an annular telescopic plate, and the bottom end is fixedly connected to a rubber ring. After the rubber ring moves, it is clamped in the gap between the annular teeth on the toothed nut and the nut. A traction rope is fixedly connected between the plurality of rubber pads and the annular telescopic plate. The shielding ring is elastic in the radial direction.

[0009] A tapping table has a plurality of chucks rotatably connected to the top of the tapping table. The discharge end of the material guide assembly and the tap are both located above the rotation path of the chuck. The chuck clamps the nut assembly when working.

[0010] In the above-mentioned high-precision fixed nut processing equipment for aerospace, a fitting component is connected to the processing table, and the fitting component includes three storage shells and a second electric telescopic rod installed on the processing table. The three storage shells correspond one to one with the three second electric telescopic rods, and multiple buffer blocks are stacked in the vertical direction inside the storage shells. The output end of the second electric telescopic rod rests on the lowest buffer block. After the lowest buffer block is pushed away, the upper buffer block automatically falls to fill the position. The contact part between the buffer block and the toothed nut is a silicone layer. After the buffer block moves, it fits tightly to the outside of the toothed nut through the elastic deformation of the silicone layer.

[0011] In the above-mentioned high-precision fixed nut processing equipment for aerospace, the material guide assembly includes a first material guide trough, a second material guide trough and a third material guide trough fixedly connected to the processing table and connected in sequence. The feed end of the first material guide trough is connected to the top of the processing table and faces a second electric telescopic rod. The discharge end is equipped with a first push block. Multiple nut assemblies are stacked obliquely on the first material guide trough. The lowest nut assembly is located at the output end of the first push block, and after being pushed into the second material guide trough by the output end of the first push block, the upper nut assembly automatically falls down to fill the position. The discharge end of the third material guide trough is located above the rotation path of the chuck.

[0012] In the above-mentioned high-precision fixed nut processing equipment for aerospace, a magnetic block is installed on the outside of the buffer block, and three grooves are opened on the inside of the third material guide groove. The three grooves correspond to each other and slide with the three magnetic blocks. The bottom of the groove is connected to a sliding groove, and a small magnetic block is slidably connected inside the sliding groove. Multiple springs are fixedly connected between the small magnetic block and the top of the sliding groove. An opening is opened at the bottom of the sliding groove for the small magnetic block to move downward. The magnetic attraction between the three small magnetic blocks and the magnetic block is less than the gravity of the nut assembly. An electromagnet is installed at the output end of the second electric telescopic rod, and the electromagnet is magnetically matched with the magnetic block.

[0013] In the above-mentioned high-precision fixed nut processing equipment for aerospace, the processing mechanism includes a liquid storage tank fixedly connected to the processing table, a driving component is installed on the side of the liquid storage tank, the driving component includes a telescopic structure installed on the side of the liquid storage tank, a tapping power head is installed at the output end of the telescopic structure, and the tap is installed on the output end of the tapping power head. The protective component includes multiple first electric telescopic rods installed on the output end of the telescopic structure, and the annular frame is connected to the output ends of the multiple first electric telescopic rods.

[0014] In the above-mentioned high-precision fixed nut processing equipment for aerospace, the annular frame includes an arc block fixedly connected to the output ends of multiple first electric telescopic rods, multiple third electric telescopic rods are installed at the bottom of the arc block, the sides of the multiple third electric telescopic rods are all installed with first push rods, and the output ends are fixedly connected to the same annular block, the output ends of the multiple first push rods are all fixedly connected to an arc clamping block, and the multiple arc clamping blocks form a clamping ring when closed, and multiple suction cups are installed on the inner side of the clamping ring. When the multiple suction cups are working, negative pressure adsorbs the shielding ring, and multiple second push rods are installed on the inner side of the annular block. The output end of the second push rod is fixedly connected to the rubber pad. After the rubber pad moves, it rests on the bottom of the annular teeth on the toothed nut, and the middle part of the traction rope passes around the outside of the annular block.

[0015] In the above-mentioned high-precision fixed nut processing equipment for aerospace, the shielding ring includes multiple baffles and elastic cloths that are staggered and connected end to end. The long direction of the baffle is parallel to the axial direction of the shielding ring. The middle parts of the multiple baffles are fixedly connected to the fixed end of the annular telescopic plate, and the bottom ends are fixedly connected to the rubber ring. After the multiple rubber pads move, the annular telescopic plate is pulled to stretch and expand by the traction rope, so that the top of the shielding ring opens and covers the annular teeth of the toothed nut.

[0016] In the above-mentioned high-precision fixed nut processing equipment for aerospace, a rotatable rotating block and a rotating disk are connected inside the tapping table, and multiple chucks are installed on the rotating disk. A limiting assembly and a dust suction device are installed inside the rotating block. The limiting assembly includes a hydraulic push rod installed inside the rotating block. The output end of the hydraulic push rod is fixedly connected to the limiting block. After the limit block moves, it extends into the interior of the nut assembly and contacts the tap before the toothed nut. The rotating block, rotating disk and chuck are all provided with through holes for the airflow sucked by the limiting block and the dust suction device to pass through. A second push block is installed on the chuck, and a discharge trough is connected to the top of the tapping table. When the second push block is working, its output end pushes the nut assembly after tapping into the discharge trough.

[0017] In the above-mentioned high-precision fixed nut processing equipment for aerospace, two rotating components are connected inside the tapping table. The rotating component includes a rotating motor installed inside the tapping table. The output end of the rotating motor is coaxially fixedly connected to a gear, and the gear is engaged with a gear ring. The two gear rings are coaxially fixedly connected to the outer sides of the rotating disk and the rotating block respectively.

[0018] The above-mentioned high-precision fixed nut processing equipment for aerospace also includes a cooling component, which includes an infusion pipe connected to the bottom of a liquid storage tank. The liquid storage tank contains cutting fluid. The end of the infusion pipe away from the liquid storage tank is connected to a nozzle, and the spraying end of the nozzle is directed toward the tapping area of ​​the tap.

[0019] Compared with the existing technology, the advantages of the present invention are:

[0020] 1. The present invention sets a processing mechanism, a shielding ring composed of a baffle and an elastic cloth, which is clamped into the gap between the annular teeth and the nut on the toothed nut through a rubber ring, and cooperates with the annular telescopic plate and the traction rope. When the rubber pad rests on the bottom of the annular teeth, the shielding ring opens to form a trumpet-shaped barrier to prevent the tap from contacting the annular teeth, and cushions the impact force of accidental deviation of the tap through the elastic cloth, thereby protecting the annular teeth of the toothed nut; cooperates with the nozzle to directionally spray cutting fluid, the dust suction device to suck chips and cutting fluid, and the shielding ring to block flying chips, while guiding the cutting fluid back through the guide groove of the baffle and the waterproof elastic cloth to achieve chip collection and cutting fluid reuse, thereby improving the stability of tapping processing.

[0021] 2. The present invention provides a fitting component, and the output end of the second electric telescopic rod is extended. The magnetic block on the outside of the buffer block is magnetically attracted by the electromagnet, which facilitates accurate pushing of the buffer block. After the buffer block moves, it is tightly fitted to the outside of the toothed nut through the elastic deformation of the silicone layer, and is transported and processed along with the toothed nut, effectively avoiding collision between the annular teeth on the two toothed nuts. The elastic silicone layer effectively absorbs impact energy, reduces the impact force of the collision between the toothed nuts, protects the toothed nuts, and does not easily leave traces after the silicone layer is disassembled.

[0022] 3. The present invention provides a magnetic block and cooperates with the electromagnet at the output end of the second electric telescopic rod to facilitate accurate pushing of the buffer block, so that the buffer block and the toothed nut form a nut assembly. At the same time, it cooperates with the small magnetic block on the third material guide trough and, under the action of the spring force, ensures that the nut assembly falls vertically along the third material guide trough without deviation, and forms a buffer for the nut assembly, thereby reducing the rigid collision force between the nut assembly and the chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a high-precision fixed nut processing equipment for aerospace proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the processing table structure of a high-precision fixed nut processing equipment for aerospace use proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a buffer block for high-precision fixed nut processing equipment for aerospace use proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a material guide assembly of a high-precision fixed nut processing equipment for aerospace use proposed by the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the third guide chute of a high-precision fixed nut processing equipment for aerospace use proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the full cross-section structure of a tapping table for high-precision fixed nut processing equipment for aerospace use proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the machining mechanism of a high-precision fixed nut machining equipment for aerospace use proposed by the present invention;

[0030] Figure 8 This is a schematic diagram of a protective component of a high-precision fixed nut processing equipment for aerospace use proposed by the present invention;

[0031] Figure 9 This is a disassembled diagram of the protective component and nut assembly of a high-precision fixed nut processing equipment for aerospace use proposed by the present invention;

[0032] Figure 10 This is a full-section front view of a protective component and a nut assembly of a high-precision fixed nut processing equipment for aerospace use proposed by the present invention;

[0033] Figure 11 for Figure 10 A magnified detail of point A.

[0034] In the figure: 1. Processing table; 2. Processing table; 3. Storage housing; 4. Liquid storage tank; 5. Driving component; 6. First electric telescopic rod; 7. Tap; 8. Infusion tube; 9. Discharge chute; 10. First material guide chute; 11. First push block; 12. Second material guide chute; 13. Tapping table; 14. Clamping frame; 15. Second electric telescopic rod; 16. Buffer block; 17. Toothed nut; 18. Magnetic block; 19. Third material guide chute; 20. Spring; 21. , small magnetic block; 22. Rotating block; 23. Rotating disk; 24. Gear; 25. Gear ring; 26. Hydraulic push rod; 27. Limit block; 28. Chuck; 29. ​​Dust suction device; 30. Second push block; 31. Spray head; 32. Arc block; 33. Third electric telescopic rod; 34. Pull rope; 35. Arc clamping block; 36. Ring block; 37. Rubber pad; 38. Baffle; 39. Elastic cloth; 40. Ring telescopic plate; 41. Rubber ring. DETAILED DESCRIPTION

[0035] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0036] Reference Figure 1-Figure 3 A high-precision fixed nut processing device for aerospace, comprising a processing table 1, and further comprising:

[0037] The processing table 2 has a liftable clamping frame 14 connected to the top thereof, a toothed nut 17 clamped on the inner side of the clamping frame 14, and three buffer blocks 16 tightly fitted on the outer side of the toothed nut 17, together forming a nut assembly.

[0038] The clamping frame 14 is controlled to rise and fall by an existing lifting device, which facilitates the positioning of the toothed nut 17 when rising and avoids obstruction of the movement of the nut assembly when descending.

[0039] A fitting component is connected to the processing table 2, and the fitting component includes three storage shells 3 and a second electric telescopic rod 15 installed on the processing table 2. The three storage shells 3 correspond to the three second electric telescopic rods 15 one by one, and multiple buffer blocks 16 are stacked in the vertical direction inside the storage shell 3. The output end of the second electric telescopic rod 15 rests on the lowest buffer block 16. After the lowest buffer block 16 is pushed away, the upper buffer block 16 automatically falls to fill the position. The outer shell of the buffer block 16 is made of plastic, and the contact part with the toothed nut 17 is a silicone layer. After the buffer block 16 moves, it fits tightly to the outer side of the toothed nut 17 through the elastic deformation of the silicone layer, and is transported and processed along with the toothed nut 17. It is not easy to leave traces after the silicone layer is disassembled.

[0040] The staff adds the buffer block 16 to the interior of the storage shell 3 and fits the components together to automatically complete the formation of the nut assembly.

[0041] Reference Figure 1 、 Figure 4 and Figure 5 , material guide assembly, the material guide assembly is used to convey the nut assembly.

[0042] The material guide assembly includes a first material guide trough 10, a second material guide trough 12 and a third material guide trough 19 which are fixedly connected to the processing table 1 and connected in sequence. The feed end of the first material guide trough 10 is connected to the top of the processing table 2 and faces a second electric telescopic rod 15. The discharge end is equipped with a first push block 11. Multiple nut assemblies are stacked obliquely on the first material guide trough 10. The lowest nut assembly is located at the output end of the first push block 11, and after being pushed into the second material guide trough 12 by the output end of the first push block 11, the nut assembly above automatically falls down to fill the position, thereby realizing continuous feeding of the nut assembly and improving the conveying efficiency of the nut assembly.

[0043] The discharge end of the third material guide trough 19 is located above the rotation path of the chuck 28 .

[0044] A magnetic block 18 is installed on the outside of the buffer block 16, and three grooves are opened on the inside of the third material guide groove 19. The three grooves correspond to each other and slide with the three magnetic blocks 18. The bottom of the groove is connected to a sliding groove. A small magnetic block 21 is slidably connected inside the sliding groove. A plurality of springs 20 are fixedly connected between the small magnetic block 21 and the top of the sliding groove. An opening is opened at the bottom of the sliding groove for the small magnetic block 21 to move downward. The magnetic attraction between the three small magnetic blocks 21 and the magnetic block 18 is less than the gravity of the nut assembly.

[0045] When the nut assembly falls through the third guide trough 19, the small magnetic block 21 forms a magnetic attraction on the magnetic block 18 without preventing the nut assembly from falling. Under the elastic force of the spring 20, the nut assembly falls smoothly, reducing the impact force of its fall.

[0046] An electromagnet is installed at the output end of the second electric telescopic rod 15 , and the electromagnet is magnetically matched with the magnetic block 18 .

[0047] Through the magnetic attraction of the electromagnet to the magnetic block 18, when the output end of the second electric telescopic rod 15 is extended, the buffer block 16 is accurately pushed, so as to accurately form the nut assembly.

[0048] Reference Figure 1 、 Figure 7-11 , processing mechanism, a tap 7 and a protective assembly are installed at the output end of the processing mechanism, the protective assembly includes a liftable annular frame, the annular frame can detachably clamp a shielding ring, and a plurality of rubber pads 37 are movably connected to it. The middle part of the shielding ring is connected to an annular telescopic plate 40, and the bottom end is fixedly connected to a rubber ring 41. After the rubber ring 41 moves, it is clamped in the gap between the annular teeth and the nut on the toothed nut 17. A traction rope 34 is fixedly connected between the multiple rubber pads 37 and the annular telescopic plate 40, and the shielding ring is elastic along the radial direction.

[0049] The processing mechanism includes a liquid storage tank 4 fixedly connected to the processing table 1, and a driving component 5 is installed on the side of the liquid storage tank 4. The driving component 5 includes a telescopic structure installed on the side of the liquid storage tank 4. A tapping power head is installed at the output end of the telescopic structure, and a tap 7 is installed on the output end of the tapping power head. The protective component includes multiple first electric telescopic rods 6 installed on the output end of the telescopic structure, and the annular frame is connected to the output ends of the multiple first electric telescopic rods 6.

[0050] The tapping power head adopts the existing technology. When it works, it drives the tap 7 to tap the toothed nut 17.

[0051] The annular frame includes an arc block 32 fixedly connected to the output ends of multiple first electric telescopic rods 6, multiple third electric telescopic rods 33 are installed at the bottom of the arc block 32, the sides of multiple third electric telescopic rods 33 are installed with first push rods, and the output ends are fixedly connected to the same annular block 36, and the output ends of multiple first push rods are fixedly connected to arc clamping blocks 35. When the multiple arc clamping blocks 35 are closed, they form a clamping ring, and multiple suction cups are installed on the inner side of the clamping ring. When the multiple suction cups are working, negative pressure adsorbs the shielding ring, and multiple second push rods are installed on the inner side of the annular block 36. The output end of the second push rod is fixedly connected to the rubber pad 37. After the rubber pad 37 moves, it abuts against the bottom of the annular teeth on the toothed nut 17, and the middle part of the traction rope 34 passes around the outside of the annular block 36.

[0052] The blocking ring is fixed in the initial state by the clamping ring and the suction cup inside it. After the blocking ring is fixed to the toothed nut 17 through the rubber ring 41, the clamping ring is separated from the blocking ring to avoid hindering the subsequent deformation of the blocking ring.

[0053] The shielding ring includes multiple baffles 38 and elastic fabrics 39 that are staggered and connected end to end. The long direction of the baffle 38 is parallel to the axial direction of the shielding ring. The middle parts of the multiple baffles 38 are fixedly connected to the fixed end of the annular telescopic plate 40, and the bottom ends are fixedly connected to the rubber ring 41. After the multiple rubber pads 37 move, the annular telescopic plate 40 is stretched and expanded by pulling the traction rope 34, so that the top of the shielding ring opens and covers the annular teeth of the toothed nut 17.

[0054] The bottom end of the baffle 38 is fixed to the toothed nut 17 through a rubber ring 41. When the annular telescopic plate 40 is pulled by the traction rope 34, it drives multiple baffles 38 to tilt and rotate outward. Under the elastic force of the elastic cloth 39, the top of the shielding ring opens and covers the annular teeth of the toothed nut 17 to protect the annular teeth.

[0055] The annular telescopic plate 40 is elastic and elastically stretches along its own circumferential direction when pulled outward.

[0056] Reference Figure 1 and Figure 6 , tapping table 13, the top of the tapping table 13 is rotatably connected to a plurality of chucks 28, the material guide assembly discharge end and the tap 7 are both located above the rotation path of the chuck 28, and the chuck 28 clamps the nut assembly when working.

[0057] The tapping table 13 is internally connected to a rotatable rotating block 22 and a rotating disk 23, and multiple chucks 28 are mounted on the rotating disk 23. A limit assembly and a dust suction device 29 are installed inside the rotating block 22. The limit assembly includes a hydraulic push rod 26 installed inside the rotating block 22. The output end of the hydraulic push rod 26 is fixedly connected to a limit block 27. After the limit block 27 moves, it extends into the interior of the nut assembly and contacts the tap 7 before the toothed nut 17. The rotating block 22, the rotating disk 23 and the chuck 28 are all provided with through holes for the airflow sucked by the limit block 27 and the dust suction device 29 to pass through.

[0058] The tap 7 is limited by the limiting assembly to avoid accidental collision between the tap 7 and the toothed nut 17. The dust suction device 29 adopts the existing technology to suck the chips generated during tapping.

[0059] A second push block 30 is mounted on the chuck 28 , and a discharge chute 9 is connected to the top of the tapping station 13 . When the second push block 30 is working, its output end pushes the tapped nut assembly into the discharge chute 9 to complete the discharge operation.

[0060] There are two rotating components connected inside the tapping table 13. The rotating component includes a rotating motor installed inside the tapping table 13. The output end of the rotating motor is coaxially fixedly connected to a gear 24. The gear 24 is engaged with a gear ring 25. The two gear rings 25 are coaxially fixedly connected to the outer sides of the rotating disk 23 and the rotating block 22 respectively.

[0061] Reference Figure 7 and Figure 8 , and also includes a cooling component, which includes a liquid infusion pipe 8 connected to the bottom of the liquid storage tank 4. The liquid storage tank 4 is filled with cutting fluid. The end of the liquid infusion pipe 8 away from the liquid storage tank 4 is connected to a nozzle 31. The spraying end of the nozzle 31 is directed toward the tapping area of ​​the tap 7, which is convenient for cleaning chips and improving the stability of tapping.

[0062] When the present invention is used, the toothed nut 17 is first placed in the clamping frame 14 on the processing table 2, and then the three second electric telescopic rods 15 are started, and their output ends are extended. The magnetic block 18 on the outside of the buffer block 16 is magnetically attracted by the electromagnet, so that the buffer block 16 remains stationary during the pushing process, and finally can be correctly fitted on the outside of the toothed nut 17.

[0063] During subsequent transportation, the buffer block 16 can protect the toothed nut 17. Since the buffer block 16 has a certain thickness, it can effectively prevent the outward-facing annular teeth on the two toothed nuts 17 from colliding, and absorb the impact energy through the elastic silicone layer, thereby reducing the impact force of the collision between the toothed nuts 17.

[0064] When the three buffer blocks 16 are tightly fitted on the outside of the toothed nut 17, except for the second electric telescopic rod 15 facing the first material guide trough 10, the output ends of the other two second electric telescopic rods 15 are retracted, the clamping frame 14 is controlled to move downward, and then the output ends of the remaining second electric telescopic rods 15 continue to extend, pushing the nut assembly consisting of the toothed nut 17 and the three buffer blocks 16 to move until the nut assembly is pushed onto the first material guide trough 10.

[0065] A plurality of nut assemblies are accumulated on the first guide chute 10 .

[0066] When the tapping process begins, the first push block 11 works, and its output end extends to push a nut assembly into the second guide groove 12. The nut assembly slides along the second guide groove 12 to the inside of the third guide groove 19. When the first push block 11 is retracted, the next nut assembly accumulated on the first guide groove 10 will slide to the front of the first push block 11, which is convenient for feeding one by one, forming a dynamic buffer library, ensuring uninterrupted feeding, and no manual participation in the feeding link. The staff do not need to be on standby all the time, which is convenient for the staff to engage in quality inspection, equipment inspection and other tasks, reducing the burden on the staff and improving the utilization rate of human resources.

[0067] The nut assembly falls along the inner groove of the third guide trough 19 through the magnetic block 18, ensuring that the nut assembly falls vertically without rotation or deviation.

[0068] As the nut assembly falls, the small magnetic block 21 magnetically attracts the magnetic block 18 and stretches the spring 20 as the nut assembly falls. Since the magnetic attraction between the three small magnetic blocks 21 and the magnetic block 18 is less than the gravity of the nut assembly, the small magnetic block 21 moves down with the nut assembly and extends out of the sliding groove to continue to limit the nut assembly, preventing the nut assembly from rotating or shifting when it is about to finish falling, and reducing the impact force of the nut assembly when it falls through the tension of the spring 20, effectively avoiding a rigid collision between the nut assembly and the chuck 28.

[0069] After the fallen nut assembly is clamped by the claws on the chuck 28, the rotating disk 23 is controlled to rotate so that the nut assembly rotates to the right below the tap 7.

[0070] When tapping the toothed nut 17 in the nut assembly, the driving component 5 works, driving the tapping power head and the tap 7 downward through the telescopic structure, and driving the arc block 32 downward through the first electric telescopic rod 6. The arc block 32 drives the baffle 38 and the elastic cloth 39 to move downward synchronously through the third electric telescopic rod 33, the first push rod, the arc clamping block 35 and the suction cup inside it. The baffle 38 and the elastic cloth 39 always surround the outside of the tap 7 to prevent the tap 7 from hitting the annular teeth of the toothed nut 17 and protect the annular teeth.

[0071] The hydraulic push rod 26 inside the rotating block 22 below the tap 7 works, and its output end pushes the limit block 27 to move upward. The limit block 27 extends into the interior of the toothed nut 17, and the tap 7 moving downward first contacts the limit block 27. The limit groove on the top of the limit block 27 limits the deviation of the tap 7. As the tap 7 continues to move downward, the limit block 27 moves downward in a controlled manner until the rubber ring 41 at the bottom of the baffle 38 contacts the toothed nut 17, stopping the movement of the tap 7.

[0072] At this time, the rubber ring 41 will be stuck in the gap between the annular teeth of the toothed nut 17 and the nut, preventing chips from subsequent tapping from splashing into the gap.

[0073] Then start the third electric telescopic rod 33 on the arc block 32, and its output end extends, driving the baffle 38 and the elastic cloth 39 to move downward through the first push rod, the arc clamping block 35 and the suction cup, so that the rubber ring 41 continues to be squeezed downward and embedded more tightly in the gap, completing the fixation of the shielding ring. Then release the suction cup inside the arc clamping block 35, the output end of the first push rod contracts, and the arc clamping block 35 is retracted.

[0074] After fixing the baffle 38, the tap 7 continues to move downward under control. At this time, the output end of the first electric telescopic rod 6 contracts synchronously to ensure the stability of the arc block 32. When the tap 7 rests against the toothed nut 17, the annular block 36 on the output end of the third electric telescopic rod 33 is located below the annular teeth of the toothed nut 17. The multiple second push rods on the annular block 36 work, and their output ends extend, pushing the multiple rubber pads 37 on the inner side of the annular block 36 inward, so that the rubber pads 37 rest against the lower ends of the annular teeth of the toothed nut 17 to support the annular teeth.

[0075] When the rubber pad 37 moves inward, the traction rope 34 is pulled, thereby pulling the annular telescopic plate 40 on the baffle 38 outward. Since the bottom end of the baffle 38 is fixed to the gap between the annular teeth and the nut on the toothed nut 17 through the rubber ring 41, and the elastic cloth 39 is elastic, when the annular telescopic plate 40 is pulled and stretched, it drives the baffle 38 to rotate outward, so that the multiple baffles 38 and the elastic cloth 39 form a trumpet-shaped shielding ring to shield the annular teeth of the toothed nut 17.

[0076] During the entire downward movement of the tap 7, the baffle 38 and the elastic cloth 39 are always positioned between the tap 7 and the annular teeth, preventing direct contact between the tap 7 and the annular teeth and thus protecting the annular teeth from damage. In addition, if the tap 7 is accidentally deflected, the elastically deformable elastic cloth 39 provides a buffer, thereby protecting the toothed nut 17.

[0077] When the tap 7 starts tapping, the output end of the hydraulic push rod 26 contracts, driving the limit block 27 to reset, and then the rotating motor is started again. The output end of the rotating motor drives the rotating block 22 to rotate through the gear 24 and the gear ring 25, so that the dust suction device 29 moves to the bottom of the toothed nut 17 that needs to be tapped.

[0078] At the same time, the cutting fluid inside the liquid storage tank 4 is transported through the liquid infusion pipe 8 and finally sprayed directly to the tapping area by the nozzle 31. Most of the chips generated by tapping will flow downward with the cutting fluid, and the dust suction device 29 will work to generate a suction airflow to suck the chips and cutting fluid.

[0079] The shielding ring opened at the top blocks the annular teeth of the toothed nut 17, effectively blocking a small part of the chips flying upward. A guide groove is engraved on the inner wall of the baffle 38, and the elastic cloth 39 is made of waterproof spandex material, which facilitates the cutting fluid blocked by the shielding ring to flow smoothly to the center, thereby improving the utilization rate of the cutting fluid and the chip removal effect.

[0080] After the tapping is completed, the second push rod is reset to restore the shielding ring to its original shape. The first push rod and the suction cup on the arc-shaped clamping block 35 work again, and the negative pressure adsorbs the shielding ring. The rubber ring 41 at the bottom of the shielding ring is pulled out through the third electric telescopic rod 33, and the annular frame is reset. The rotating block 22 is controlled to rotate and reset, which is convenient for tapping the next nut assembly.

[0081] Finally, the rotating disk 23 rotates in a controlled manner, so that the tapped nut assembly moves to the side of the discharge chute 9. After the claws of the chuck 28 are released, the second push block 30 is started, and its output end pushes the tapped nut assembly to move it to the discharge chute 9, and the nut assembly is unloaded through the discharge chute 9.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision fixed nut processing equipment for aerospace, comprising a processing table (1), characterized in that: Also included is a device mounted on the processing table (1): A processing table (2) is connected to the top of the processing table (2) with a lifting clamping frame (14), the inner side of the clamping frame (14) is clamped with a toothed nut (17), and the outer side of the toothed nut (17) is tightly fitted with three buffer blocks (16), which together form a nut assembly; A material guide assembly, the material guide assembly is used to convey the nut assembly; A processing mechanism, wherein a tap (7) and a protective component are installed at the output end of the processing mechanism, the protective component comprises a liftable annular frame, a shielding ring is detachably clamped on the annular frame, and a plurality of rubber pads (37) are movably connected thereto, a middle portion of the shielding ring is connected to an annular telescopic plate (40), and a bottom end is fixedly connected to a rubber ring (41), and after the rubber ring (41) moves, it is clamped in the gap between the annular teeth on the toothed nut (17) and the nut, a traction rope (34) is fixedly connected between the plurality of rubber pads (37) and the annular telescopic plate (40), and the shielding ring is elastic in the radial direction; The tapping table (13) has a plurality of chucks (28) rotatably connected to the top of the tapping table (13). The discharge end of the material guide assembly and the tap (7) are all located above the rotation path of the chuck (28). The chuck (28) clamps the nut assembly when working.

2. The high-precision fixed nut processing equipment for aerospace according to claim 1, characterized in that: A fitting assembly is connected to the processing table (2), and the fitting assembly includes three storage shells (3) and a second electric telescopic rod (15) installed on the processing table (2). The three storage shells (3) correspond to the three second electric telescopic rods (15) one by one. A plurality of buffer blocks (16) are stacked and placed inside the storage shells (3) in a vertical direction. The output end of the second electric telescopic rod (15) abuts against the lowest buffer block (16). After the lowest buffer block (16) is pushed away, the upper buffer block (16) automatically falls to fill the position. The contact portion between the buffer block (16) and the toothed nut (17) is a silicone layer. After the buffer block (16) moves, it is tightly fitted to the outer side of the toothed nut (17) through the elastic deformation of the silicone layer.

3. The high-precision fixed nut processing equipment for aerospace according to claim 2, characterized in that: The material guide assembly comprises a first material guide trough (10), a second material guide trough (12) and a third material guide trough (19) which are fixedly connected to the processing table (1) and connected in sequence. The feed end of the first material guide trough (10) is connected to the top of the processing table (2) and faces a second electric telescopic rod (15). The discharge end is equipped with a first push block (11). A plurality of nut assemblies are stacked obliquely on the first material guide trough (10). The lowest nut assembly is located at the output end of the first push block (11). After being pushed into the second material guide trough (12) by the output end of the first push block (11), the upper nut assembly automatically falls down to fill the position. The discharge end of the third material guide trough (19) is located above the rotation path of the chuck (28).

4. The high-precision fixed nut processing equipment for aerospace according to claim 3, characterized in that: A magnetic block (18) is installed on the outside of the buffer block (16), and three grooves are opened on the inside of the third material guide groove (19). The three grooves correspond to the three magnetic blocks (18) and slide in cooperation with each other. The bottom of the groove is connected to a sliding groove. A small magnetic block (21) is slidably connected inside the sliding groove. A plurality of springs (20) are fixedly connected between the small magnetic block (21) and the top of the sliding groove. An opening for the small magnetic block (21) to move downward is opened at the bottom of the sliding groove. The magnetic attraction force between the three small magnetic blocks (21) and the magnetic block (18) is less than the gravity of the nut assembly. An electromagnet is installed at the output end of the second electric telescopic rod (15), and the electromagnet is magnetically matched with the magnetic block (18).

5. The high-precision fixed nut processing equipment for aerospace according to claim 1, characterized in that: The processing mechanism comprises a liquid storage tank (4) fixedly connected to a processing table (1); a driving component (5) is installed on the side of the liquid storage tank (4); the driving component (5) comprises a telescopic structure installed on the side of the liquid storage tank (4); a tapping power head is installed at the output end of the telescopic structure; a tap (7) is installed on the output end of the tapping power head; a protective component comprises a plurality of first electric telescopic rods (6) installed on the output end of the telescopic structure; and a ring frame is connected to the output ends of the plurality of first electric telescopic rods (6).

6. The high-precision fixing nut processing equipment for aerospace according to claim 5, characterized in that: The annular frame comprises an arc block (32) fixedly connected to the output ends of a plurality of first electric telescopic rods (6), a plurality of third electric telescopic rods (33) are installed at the bottom of the arc block (32), a first push rod is installed on the side of the plurality of third electric telescopic rods (33), and the output ends are fixedly connected to the same annular block (36), the output ends of the plurality of first push rods are fixedly connected to an arc clamping block (35), and the plurality of arc clamping blocks (35) form a clamping ring when they are closed, and a plurality of suction cups are installed on the inner side of the clamping ring, and the plurality of suction cups absorb the shielding ring under negative pressure when working, and a plurality of second push rods are installed on the inner side of the annular block (36), and the output ends of the second push rods are fixedly connected to the rubber pad (37), and the rubber pad (37) abuts against the bottom of the annular teeth on the toothed nut (17) after moving, and the middle part of the traction rope (34) passes around the outer side of the annular block (36).

7. The high-precision fixing nut processing equipment for aerospace according to claim 6, characterized in that: The shielding ring includes a plurality of baffles (38) and elastic cloth (39) that are staggered and connected end to end. The length of the baffles (38) is parallel to the axial direction of the shielding ring. The middle parts of the plurality of baffles (38) are fixedly connected to the fixed end of the annular telescopic plate (40), and the bottom ends are fixedly connected to the rubber ring (41). After the plurality of rubber pads (37) move, the annular telescopic plate (40) is pulled to extend and expand by the traction rope (34), so that the top of the shielding ring is opened and covers the annular teeth of the toothed nut (17).

8. The high-precision fixing nut processing equipment for aerospace according to claim 1, characterized in that: The tapping table (13) is internally connected with a rotatable rotating block (22) and a rotating disk (23), and a plurality of chucks (28) are installed on the rotating disk (23). A limit assembly and a dust collecting device (29) are installed inside the rotating block (22). The limit assembly includes a hydraulic push rod (26) installed inside the rotating block (22). The output end of the hydraulic push rod (26) is fixedly connected to the limit block (27). After the limit block (27) moves, it extends into the inner part of the nut assembly. The rotary block (22), the rotary disk (23) and the chuck (28) are all provided with through holes for the airflow sucked by the limit block (27) and the dust collecting device (29). The chuck (28) is equipped with a second push block (30). The top of the tapping table (13) is connected to the discharge trough (9). When the second push block (30) is working, its output end pushes the nut assembly after tapping into the discharge trough (9).

9. The high-precision fixing nut processing equipment for aerospace according to claim 8, characterized in that: The tapping table (13) is internally connected with two rotating assemblies, the rotating assembly comprising a rotating motor installed inside the tapping table (13), an output end of the rotating motor being coaxially fixedly connected with a gear (24), the gear (24) being meshed with a gear ring (25), and the two gear rings (25) being coaxially fixedly connected to the outer sides of the rotating disk (23) and the rotating block (22).

10. The high-precision fixing nut processing equipment for aerospace according to claim 5, characterized in that: The invention also includes a cooling assembly, which includes a liquid infusion pipe (8) connected to the bottom of the liquid storage tank (4), wherein the liquid storage tank (4) contains cutting fluid, and an end of the liquid infusion pipe (8) away from the liquid storage tank (4) is connected to a nozzle (31), and the spraying end of the nozzle (31) is directed toward the tapping area of ​​the tap (7).

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