A screw processing slot milling tool

Abstract

The application discloses a screw processing slot milling tool, and relates to the field of machine tools, and solves the problem that the existing milling tool is difficult to continuously process screws of more sizes, and comprises a ring-shaped shell fixed on a machine tool, a feeding pipe installed on the top of the ring-shaped shell, a plurality of material positioning plates arranged on the inner side of the ring-shaped shell, a plurality of insertion holes formed in the surface of the material positioning plates, and two clamping plates arranged on the outer side of the material positioning plates; further comprising a material clamping mechanism, which enables the two clamping plates to self-adaptively clamp screws of more sizes, and is installed on the inner side of the feeding pipe and comprises two rotating rings rotatably installed on the inner side of the ring-shaped shell; the material clamping mechanism enables the screws to be sequentially positioned in the insertion holes of the material positioning plates, and enables the two clamping plates to be close to each other to elastically clamp the outer side of the screws, so that the clamping plates can self-adaptively clamp the screws according to the sizes of the screws, thereby facilitating the clamping and positioning of the screws of more sizes.

Description

Technical Field

[0001] This invention relates to the field of machine tool equipment, specifically to a milling fixture for slotted screw machining. Background Technology

[0002] Screws are a type of fastener that uses threads to secure objects and machine parts. They typically consist of a head and a shank, and connect two or more components via threads. They are mainly used for blind hole connections, and can be fixed without the need for a nut. They are commonly found in electronic equipment, mechanical parts, and other scenarios where frequent disassembly is required.

[0003] A slotted screw is a groove at the top of the screw head, forming a straight line. It serves as the insertion interface for screwdrivers or screwdrivers, transmitting force to the screw through rotation to tighten or loosen it. This is typically achieved using cutting or stamping tools on a machine tool. First, the screw head is clamped in a fixture. Then, a slotted milling cutter is fed along the diameter of the screw head to cut the straight groove. During machining, a clamping device is needed to hold and position the screw for smooth cutting. Existing screw clamping fixtures usually use an arc-shaped clamping plate with magnetic blocks to hold and position the screw. While this allows for precise screw positioning, the arc-shaped clamping plate needs to be compatible with screws of the same size. If processing a batch of screws of the same size, the clamping plate must be replaced after all screws in that batch are processed before processing the next batch of screws of different sizes. Screws of other sizes cannot be added during the process, resulting in low processing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a milling fixture for slotted screw machining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A milling fixture for slotted screw processing includes: an annular shell fixedly mounted on a machine tool, and a feed pipe fixedly installed on the top of the annular shell. The inner side of the annular shell is provided with a plurality of centrally symmetrically distributed material plates. The surface of the material plates is provided with insertion holes, and the outer side of the material plates is provided with two symmetrically distributed clamping plates. Also includes: The clamping mechanism enables the two clamping plates to adaptively clamp screws of more sizes. The clamping mechanism is installed inside the feed tube and includes two rotating rings that are symmetrically rotated inside the annular shell. The rotating rings can clamp multiple fixed plates sequentially. A feeding mechanism is used to drive and position the rotating ring to receive material. The feeding mechanism is installed on the inner side of the annular shell. The feeding mechanism includes two turntables symmetrically arranged on the inner side of the annular shell. The two turntables can drive and position the two rotating rings respectively. A discharge mechanism is used to push the finished screws on the fixed plate out of the material. The discharge mechanism is installed on the inner side of the annular shell. The discharge mechanism includes a telescopic airbag disposed on the inner side of the annular shell. The telescopic airbag can spray air to push the screws in the fixed plate.

[0006] Preferably, the clamping mechanism further includes multiple support rods centrally symmetrically fixedly installed between the two rotating rings. The outer side of each rotating ring has an insertion port for mounting the fixed plate. Two symmetrically distributed sliding rods are slidably installed on the inner side of the fixed plate. A slider is fixedly installed on the outer side of each sliding rod. A groove is provided on the side of the fixed plate near the clamping plate for limiting the sliding movement of the slider. A sleeve is fixedly installed on the side of the slider away from the sliding rod. A movable plate is slidably installed on the inner side of the sleeve. One side of each of the two movable plates is fixedly connected to the outer side of the two clamping plates. A plurality of first springs, evenly distributed, are fixedly installed between the side of the movable plate away from the clamping plate and the inner side of the sleeve box. A stop rod is fixedly installed at the end of the slide rod away from the clamping plate. A sliding cavity for the stop rod to slide and limit its movement is opened on the inner side of the fixed plate. A second spring is fixedly installed between the end of the stop rod near the slide rod and the inner side of the sliding cavity. The end of the stop rod away from the second spring has a hemispherical structure. An annular groove for the stop rod to slide and limit its movement is opened on the inner side of the annular shell. An arc plate is fixedly installed on the inner side of the annular groove. Both ends of the arc plate are inclined surfaces.

[0007] Preferably, the feeding mechanism further includes a positioning ring fixedly installed on the inner side of the rotating ring. The outer side of the positioning ring is provided with a plurality of arc-shaped grooves distributed in a centrally symmetrical manner. The outer side of the turntable is in contact with the inner side of the adjacent arc-shaped grooves, and the number of arc-shaped grooves is the same as the number of the fixed material plates. The turntable has a three-quarter circular structure, and a triangular push block is fixedly installed on the plane of the turntable. The outer side of the positioning ring is provided with a plurality of push grooves distributed in a centrally symmetrical manner, and the push grooves and the arc-shaped grooves are staggered. A rotating rod is fixedly installed between the two turntables. A drive motor is fixedly installed on the outer side of the annular shell, and the output end of the drive motor extends to the inner side of the annular shell and is fixedly connected to one end of the rotating rod.

[0008] Preferably, the discharge mechanism further includes two symmetrically fixedly installed support arms inside the annular shell. Two symmetrically distributed mounting rods are fixedly installed at the bottom of each support arm. A base plate is fixedly installed between the four mounting rods. An elastic pressure plate is slidably installed between the four mounting rods. The telescopic airbag is fixedly installed between the base plate and the elastic pressure plate. An eccentric wheel is fixedly installed on the outer side of the rotating rod, and the outer side of the eccentric wheel contacts the top of the elastic pressure plate. A nozzle is fixedly installed at the bottom of the telescopic airbag, and a one-way air inlet valve is fixedly installed at the top of the telescopic airbag. The nozzle extends to the bottom of the base plate and is located directly above the insertion hole on the adjacent material fixing plate. A discharge cylinder is fixedly installed at the bottom of the annular shell, and the bottom end of the discharge cylinder has an inclined structure.

[0009] Preferably, a breathable grille is fixedly installed on the inner side of the annular shell.

[0010] Preferably, two symmetrically distributed collars are fixedly installed on the inner side of the annular shell, and the two collars are respectively in contact with the inner side of the two rotating rings.

[0011] Preferably, a protective cylinder is provided on the inner side of the annular shell, and a sleeve plate is fixedly installed between the inner side of the protective cylinder and the support rod. A feed hole corresponding to the insertion hole on the fixed material plate is opened on the outer side of the protective cylinder, and the feed hole is a long strip structure.

[0012] Preferably, the clamping plate has an arc-shaped structure, and a plurality of arc-shaped protrusions are fixedly installed on the side of the clamping plate away from the moving plate in an equidistant manner.

[0013] Preferably, a guide rod that slides through the sleeve is provided on the inner side of the first spring, and the guide rod is fixedly installed on the side of the movable plate near the first spring.

[0014] Preferably, two symmetrically distributed baffles are fixed on the outer side of the turntable, and the outer side of the baffles is in contact with the outer side of the positioning ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention uses a clamping mechanism that enables two rotating rings to drive multiple stationary plates to perform circumferential motion. The multiple stationary plates are then aligned sequentially with the feed tube, allowing screws to be inserted into the insertion holes of the stationary plates in sequence. The two clamping plates are brought close to each other to elastically clamp the outer side of the screws, enabling the clamping plates to adaptively clamp according to the size of the screws, thus facilitating the clamping and positioning of screws of more sizes.

[0016] This invention, through a feeding mechanism, allows a triangular pusher block to be inserted into the push groove of the positioning ring when the turntable rotates. The triangular pusher block, in turn, drives the turntable to rotate slightly through the positioning ring, causing the positions of multiple positioning plates to be replaced. This enables the sequential feeding of multiple screws and allows the turntable to abut against the arc-shaped groove of the positioning ring, thus positioning the positioning ring and achieving continuous processing, thereby improving the processing efficiency of screws.

[0017] This invention, through a discharge mechanism, enables an eccentric wheel to push an elastic pressure plate downward during the rotation of the turntable, compressing the telescopic airbag. The air inside the telescopic airbag can then be ejected downward from the nozzle, pushing the screws in the insertion holes on the fixed plate. This ensures the normal discharge of the screws and prevents them from overheating and sticking to the fixed plate during processing, thereby achieving a rapid discharge effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the feed pipe and rotating ring structure in this invention; Figure 3 This is a schematic diagram of the arc-shaped plate and collar structure in this invention; Figure 4 This is a schematic diagram of the material fixing plate and protective cylinder structure in this invention; Figure 5 This is a schematic diagram of the sliding rod and the stop rod structure in this invention; Figure 6 This is a schematic diagram of the clamping plate and sleeve structure in this invention; Figure 7 This is a schematic diagram of the turntable and positioning ring structure in this invention; Figure 8 This is a schematic diagram of the elastic pressure plate and telescopic airbag structure in this invention.

[0019] In the diagram: 1. Annular shell; 2. Feed pipe; 3. Fixed plate; 4. Clamping plate; 5. Rotary ring; 6. Turntable; 7. Telescopic airbag; 8. Support rod; 9. Slide rod; 10. Slider; 11. Sleeve box; 12. Moving plate; 13. First spring; 14. Abutment rod; 15. Second spring; 16. Arc plate; 17. Positioning ring; 18. Triangular push block; 19. Rotating rod; 20. Drive motor; 21. Support arm; 22. Mounting rod; 23. Base plate; 24. Elastic pressure plate; 25. Eccentric wheel; 26. Nozzle; 27. Discharge cylinder; 28. Ventilation grille; 29. ​​Shaft collar; 30. Protective cylinder; 31. Sleeve plate; 32. Arc-shaped protrusion; 33. Guide rod; 34. Baffle plate. Detailed Implementation

[0020] 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.

[0021] Example 1: Please refer to Figures 1-8 The diagram illustrates a slotted screw milling fixture, comprising an annular shell 1 fixedly mounted on a machine tool and a feed pipe 2 fixedly installed on the top of the annular shell 1. The operator sequentially inserts screws into the feed pipe 2, allowing them to enter the annular shell 1. A milling cutter is mounted on the outer side of the annular shell 1 to perform slotted machining on the screw head. Multiple centrally symmetrically distributed positioning plates 3 are arranged on the inner side of the annular shell 1. Insertion holes are provided on the surface of the positioning plates 3, allowing the screws from the feed pipe 2 to be inserted into these holes. Two symmetrically distributed clamping plates 4 are arranged on the outer side of the positioning plates 3, clamping and positioning the screw head for subsequent slotted machining. The fixture also includes a clamping mechanism, enabling the two clamping plates 4 to adaptively clamp screws of various sizes. The clamping mechanism is installed on the inner side of the feed pipe 2.

[0022] The clamping mechanism includes two symmetrically rotating rings 5 ​​mounted inside the annular shell 1. The rings 5 ​​can clamp multiple fixed plates 3 sequentially. The clamping mechanism also includes multiple centrally symmetrical support rods 8 fixedly mounted between the two rings 5, allowing the two rings 5 ​​to rotate synchronously. The outer side of each ring 5 has an insertion slot for mounting the fixed plates 3. Two symmetrically distributed sliding rods 9 are slidably mounted on the inner side of each fixed plate 3. A slider 10 is fixedly mounted on the outer side of each sliding rod 9. A groove for limiting the sliding movement of the slider 10 is provided on the side of the fixed plate 3 closest to the clamping plate 4. A sleeve 11 is fixedly mounted on the side of the slider 10 away from the sliding rods 9. A movable plate 12 is slidably mounted on the inner side of the sleeve 11. One side of each movable plate 12 is fixedly connected to the outer side of the two clamping plates 4. Multiple first springs 13, evenly distributed, are fixedly installed between the side of the sliding plate 12 away from the clamping plate 4 and the inner side of the sleeve 11. When the two clamping plates 4 come into contact with the screw head, the reaction force of the screw head on the clamping plate 4 causes the sliding plate 12 to move along the inner side of the sleeve 11 and compress the first springs 13, thus achieving elastic clamping of the screw head. This is suitable for screws of more sizes. A stop rod 14 is fixedly installed at the end of the sliding rod 9 away from the clamping plate 4. A sliding cavity for limiting the sliding of the stop rod 14 is opened on the inner side of the fixing plate 3. A second spring 15 is fixedly installed between the end of the stop rod 14 near the sliding rod 9 and the inner side of the sliding cavity. The end of the stop rod 14 away from the second spring 15 has a hemispherical structure. A limit for the stop rod 14 is opened on the inner side of the annular shell 1. A sliding annular groove has an arc plate 16 fixedly installed on its inner side. Both ends of the arc plate 16 are inclined surfaces, so that when the rotating ring 5 rotates, it can drive the hemispherical end of the abutment rod 14 to contact the end of the arc plate 16, causing the abutment rod 14 to move to the outer side of the arc plate 16. Using the reaction force of the arc plate 16 on the abutment rod 14, the abutment rod 14 moves along the sliding cavity of the moving plate 12. The abutment rod 14 can then compress the second spring 15 and push the slide rod 9 to move, realizing the clamping and positioning of the screw head by the two clamping plates 4. A ventilated grille 28 is fixedly installed on the inner side of the annular shell 1 to facilitate the discharge of heat generated by the cutting of the screw head. Two symmetrically distributed collars 29 are fixedly installed on the inner side of the annular shell 1. The two collars 29 are respectively connected to the two rotating rings 5. The inner sides of the ring 5 are in contact with each other. The collar 29 provides support for the inner side of the rotating ring 5, improving the smoothness of the rotation of the rotating ring 5. A protective cylinder 30 is provided on the inner side of the annular shell 1. A sleeve plate 31 is fixedly installed between the inner side of the protective cylinder 30 and the support rod 8. A feed hole corresponding to the insertion hole on the fixed plate 3 is opened on the outer side of the protective cylinder 30. The feed hole is a long strip structure, so that when the rotating ring 5 rotates, the support rod 8 and the sleeve plate 31 can drive the protective cylinder 30 to move along the inner side of the annular shell 1, so that the protective cylinder 30 seals the bottom end of the feed pipe 2, preventing the next screw to be processed from falling into the annular shell 1. When the next fixed plate 3 is aligned with the feed pipe 2, the screw can enter the insertion hole of the fixed plate 3 through the feed hole on the protective cylinder 30. The clamping plate 4 has an arc-shaped structure.Furthermore, multiple equidistant arc-shaped protrusions 32 are fixedly installed on the side of the clamping plate 4 away from the moving plate 12. These protrusions allow the clamping plate 4 to abut against the screw head, facilitating the positioning of screw heads of various shapes. A guide rod 33, sliding through the sleeve 11, is provided on the inner side of the first spring 13. The guide rod 33 is fixedly installed on the side of the moving plate 12 near the first spring 13, enabling the moving plate 12 to drive the guide rod 33 to move along the inner side of the sleeve 11, thus improving the stability of the moving plate 12's movement.

[0023] Example 2: Please refer to Figures 2-7 This embodiment further illustrates Example 1. The feeding mechanism shown in the figure includes two turntables 6 symmetrically arranged inside the annular shell 1. The two turntables 6 can drive and position the two rotating rings 5 ​​respectively. The feeding mechanism also includes a positioning ring 17 fixedly installed inside the rotating ring 5. The outer side of the positioning ring 17 has multiple arc-shaped grooves distributed centrally symmetrically. The outer side of the turntable 6 contacts the inner side of the adjacent arc-shaped groove, and the number of arc-shaped grooves is the same as the number of the fixed material plates 3. The turntable 6 has a three-quarter circular structure, and a triangular push block 18 is fixedly installed on the plane of the turntable 6. The outer side of the positioning ring 17 has multiple push grooves distributed centrally symmetrically, and the push grooves and arc-shaped grooves are staggered, so that the turntable 6 can rotate along the adjacent arc-shaped grooves. When the triangular push block 18 on the turntable 6 contacts the push groove, the outer side of the turntable 6 moves away from the adjacent arc-shaped groove, and the triangular push block 18 can be inserted into the push groove, and the rotating ring 5 is pushed to rotate by the positioning ring 17, so that the turntable... 6. When the turntable 6 enters the next arc groove and the triangular push block 18 moves away from the push groove, the rotation of the turntable 6 can realize the intermittent rotation of the rotating ring 5. When the turntable 6 is in the arc groove, the turntable 6 can lock the positioning ring 17 to prevent the rotating ring 5 from rotating back. Multiple fixed plates 3 can catch multiple screws in sequence. When the fixed plate 3 with the screws is aligned with the milling cutter on the outside of the annular shell 1, the milling cutter can perform slotting on the screw. A rotating rod 19 is fixedly installed between the two turntables 6. A drive motor 20 is fixedly installed on the outside of the annular shell 1. The output end of the drive motor 20 extends to the inside of the annular shell 1 and is fixedly connected to one end of the rotating rod 19, so that the drive motor 20 can drive the two turntables 6 to rotate synchronously through the rotating rod 19. Two symmetrically distributed baffles 34 are fixed on the outside of the turntable 6. The outside of the baffles 34 contacts the outside of the positioning ring 17, so that the baffles 34 are fitted on the outside of the positioning ring 17, improving the stability of the rotation of the turntable 6.

[0024] Example 3: Please refer to Figures 2-8This embodiment further illustrates other embodiments. The discharge mechanism shown in the figure includes a telescopic airbag 7 disposed inside the annular shell 1. The telescopic airbag 7 can push the screws in the fixed plate 3 by air jet. The discharge mechanism also includes two support arms 21 symmetrically fixedly installed inside the annular shell 1. Two symmetrically distributed mounting rods 22 are fixedly installed at the bottom of the support arms 21. A base plate 23 is fixedly installed between the four mounting rods 22. An elastic pressure plate 24 is slidably installed between the four mounting rods 22. The telescopic airbag 7 is fixedly installed between the base plate 23 and the elastic pressure plate 24. An eccentric wheel 25 is fixedly installed on the outer side of the rotating rod 19. The outer side of the eccentric wheel 25 contacts the top of the elastic pressure plate 24. A nozzle 26 is fixedly installed at the bottom of the telescopic airbag 7. A one-way air inlet valve is fixedly installed at the top of the telescopic airbag 7. The nozzle 26 extends to the bottom of the base plate 23 and is located directly above the insertion hole on the adjacent fixed plate 3. When the rotating rod 19 rotates, it can push the elastic pressure plate 24 to move downward along the outside of the mounting rod 22 through the eccentric wheel 25. The elastic pressure plate 24 can compress the telescopic airbag 7, and the air in the telescopic airbag 7 can be sprayed downward from the nozzle 26 to spray out the screw in the insertion hole on the fixed plate 3, preventing the screw from overheating and sticking to the fixed plate 3 during processing, thus improving the screw discharge efficiency. As the eccentric wheel 25 rotates, the elastic pressure plate 24 uses its rebound force to allow the telescopic airbag 7 to draw in outside air through the one-way air inlet valve, and the elastic airbag can then expand and recover. The bottom of the annular shell 1 is fixedly installed with a discharge cylinder 27, and the bottom end of the discharge cylinder 27 is inclined to facilitate screw discharge.

[0025] Working principle: First, the operator connects the screw conveyor tray to the feed pipe 2, allowing the screw to enter the feed pipe 2. The screw then enters the insertion hole of the fixed plate 3 directly below through the feed hole on the protective cylinder 30. The head of the screw contacts the outer side of the fixed plate 3. At this time, the operator starts the drive motor 20. The drive motor 20 drives the two turntables 6 to rotate synchronously through the rotating rod 19. The turntables 6 rotate along the adjacent arc grooves on the positioning ring 17. The turntables 6 drive the triangular push block 18 to make a circular motion. When the triangular push block 18 contacts the push groove on the positioning ring 17, the outer side of the turntable 6 moves away from the adjacent arc groove, and the triangular push block 18 inserts into the push groove, causing the triangular push block 18 to push the positioning ring 17 to rotate. The positioning ring 17 drives the rotating ring 5 to rotate synchronously. Ring 5 drives multiple stationary plates 3 to move synchronously, realizing the position replacement of multiple stationary plates 3. During this process, the stationary plates 3 drive the abutment rod 14 to move along the annular groove of the annular shell 1. The stationary plate 3 with screws drives the abutment rod 14 inside it to approach the end of the arc plate 16, so that the hemispherical end of the abutment rod 14 contacts the end of the arc plate 16, so that the abutment rod 14 moves along the inclined end of the arc plate 16 to the outside of the arc plate 16. Using the reaction force of the arc plate 16 on the abutment rod 14, the abutment rod 14 moves along the sliding cavity of the moving plate 12. The abutment rod 14 can compress the second spring 15 and push the slide rod 9 to move. The slide rod 9 drives the sleeve 11 to move synchronously through the slider 10, so that the sleeve 11 pushes the clamping plate 4 to contact the screw head through the moving plate 12. The reaction force of the screw head on the clamping plate 4 causes the moving plate 12 to move along the inner side of the sleeve 11 and compress the first spring 13, achieving elastic clamping of the screw head. This allows the clamping plate 4 to clamp and position screw heads of more sizes. Meanwhile, another fixing plate 3 moves below the feed pipe 2, allowing the screws in the feed pipe 2 to enter the fixing plate 3. Subsequently, the turntable 6 enters the next arc-shaped groove of the positioning ring 17. As the turntable 6 rotates, the triangular push block 18 can be inserted into the next push groove, causing the triangular push block 18 to push the positioning ring 17 to rotate again. Thus, as the turntable 6 rotates, the positioning ring 17 can drive the rotating ring 5 to rotate intermittently, achieving continuous feeding and clamping positioning of screws. When the fixing plate 3 containing the screws and the annular shell 1... When the milling cutter parts are aligned, the operator can process the screws using the milling cutter parts. Finally, as the rotating ring 5 rotates, the stationary plate 3 containing the processed screws moves to the top of the discharge cylinder 27 and aligns with the nozzle 26 at the bottom of the telescopic airbag 7. The stop rod 14 moves away from the arc plate 16, and the rebound force of the second spring 15 causes the stop rod 14 to move back to its original position. The clamping plate 4 can then loosen the screws. The rotating rod 19 drives the eccentric wheel 25 to rotate synchronously, causing the eccentric wheel 25 to push the elastic pressure plate 24 downward along the outside of the mounting rod 22. The elastic pressure plate 24 compresses the telescopic airbag 7, allowing the air inside the telescopic airbag 7 to be ejected downward from the nozzle 26, ejecting the screws from the insertion holes on the stationary plate 3. The screws enter the discharge cylinder 27 and, with the rotation of the eccentric wheel 25,...The elastic pressure plate 24 pulls the telescopic airbag 7 through a one-way air intake valve, drawing in outside air. The airbag then expands and recovers, achieving continuous screw processing and rapid unloading. This improves screw processing efficiency and allows for clamping and positioning of screws of various sizes, enhancing the convenience of screw processing.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A milling fixture for slotted screw machining, characterized in that, include: An annular shell (1) is fixedly mounted on the machine tool, and a feed pipe (2) is installed on the top of the annular shell (1). Multiple fixed plates (3) are provided on the inner side of the annular shell (1). Insertion holes are opened on the surface of the fixed plates (3). Two clamping plates (4) are provided on the outer side of the fixed plates (3). Also includes: The clamping mechanism enables the two clamping plates (4) to adaptively clamp screws of more sizes. The clamping mechanism is installed inside the feed tube (2). The clamping mechanism includes two rotating rings (5) rotatably installed inside the annular shell (1). The rotating rings (5) can clamp multiple fixed plates (3) in sequence. A feeding mechanism is used to drive and position the rotating ring (5) to receive material. The feeding mechanism is installed on the inner side of the annular shell (1). The feeding mechanism includes two turntables (6) arranged on the inner side of the annular shell (1). The two turntables (6) can drive and position the two rotating rings (5) respectively. The discharge mechanism is used to push the finished screws on the fixed plate (3) out of the material. The discharge mechanism is installed on the inner side of the annular shell (1). The discharge mechanism includes a telescopic airbag (7) disposed on the inner side of the annular shell (1). The telescopic airbag (7) can spray air to push the screws in the fixed plate (3).

2. The screw machining slot milling fixture according to claim 1, characterized in that: The clamping mechanism also includes multiple support rods (8) installed between the two rotating rings (5). The outer side of the rotating ring (5) is provided with an insertion port for the installation of the fixed plate (3). Two sliding rods (9) are slidably installed on the inner side of the fixed plate (3). A slider (10) is installed on the outer side of the sliding rods (9). A sliding groove is provided on one side of the fixed plate (3) for the slider (10) to limit its sliding. A sleeve (11) is fixedly installed on one side of the slider (10). A moving plate (12) is slidably installed on the inner side of the sleeve (11). One side of each of the two moving plates (12) is respectively connected to the outer side of the two clamping plates (4). The movable plate (12) is fixedly connected to the inner side of the sleeve (11) with a plurality of first springs (13). One end of the slide rod (9) is fixedly installed with a stop rod (14). The inner side of the fixed plate (3) is provided with a sliding cavity for the stop rod (14) to be limited and slid. The other end of the stop rod (14) is fixedly installed with a second spring (15) between it and the inner side of the sliding cavity. One end of the stop rod (14) is hemispherical. The inner side of the annular shell (1) is provided with an annular groove. The inner side of the annular groove is fixedly installed with a circular arc plate (16). Both ends of the circular arc plate (16) are inclined surfaces.

3. The screw machining slot milling fixture according to claim 2, characterized in that: The feeding mechanism also includes a positioning ring (17) installed inside the rotating ring (5). The outer side of the positioning ring (17) is provided with multiple arc-shaped grooves. The outer side of the turntable (6) is in contact with the inner side of the adjacent arc-shaped grooves. The number of arc-shaped grooves is the same as the number of the fixed material plate (3). The turntable (6) is a three-quarter circular structure. A triangular push block (18) is fixedly installed on the plane of the turntable (6). The outer side of the positioning ring (17) is provided with multiple push grooves. The push grooves and the arc-shaped grooves are staggered. A rotating rod (19) is fixedly installed between the two turntables (6). A drive motor (20) is installed on the outer side of the annular shell (1). The output end of the drive motor (20) is fixedly connected to one end of the rotating rod (19).

4. The screw machining slot milling fixture according to claim 3, characterized in that: The discharge mechanism also includes two support arms (21) installed inside the annular shell (1). Two mounting rods (22) are fixedly installed at the bottom of the support arms (21). A base plate (23) is fixedly installed between the four mounting rods (22). An elastic pressure plate (24) is slidably installed between the four mounting rods (22). The telescopic airbag (7) is fixedly installed between the base plate (23) and the elastic pressure plate (24). An eccentric wheel (25) is fixedly installed on the outside of the rotating rod (19). A nozzle (26) is fixedly installed at the bottom of the telescopic airbag (7). The nozzle (26) extends to the bottom of the base plate (23). A discharge cylinder (27) is fixedly installed at the bottom of the annular shell (1).

5. The screw machining slot milling fixture according to claim 1, characterized in that: A ventilation grille (28) is installed on the inner side of the annular shell (1).

6. The screw machining slot milling fixture according to claim 1, characterized in that: Two collars (29) are fixedly installed on the inner side of the annular shell (1), and the two collars (29) are in contact with the inner side of the two rotating rings (5) respectively.

7. The screw machining slot milling fixture according to claim 2, characterized in that: The inner side of the annular shell (1) is provided with a protective cylinder (30), and a sleeve plate (31) is fixedly installed between the inner side of the protective cylinder (30) and the support rod (8). The outer side of the protective cylinder (30) is provided with a feed hole corresponding to the insertion hole on the fixed plate (3).

8. The screw machining slot milling fixture according to claim 2, characterized in that: The clamp (4) has an arc-shaped structure, and multiple arc-shaped protrusions (32) are fixedly installed on one side of the clamp (4).

9. A slot milling fixture for screw machining according to claim 2, characterized in that: The inner side of the first spring (13) is provided with a guide rod (33) that slides through the sleeve (11), and the guide rod (33) is fixedly installed on one side of the movable plate (12).

10. A slot milling fixture for screw machining according to claim 3, characterized in that: Two baffles (34) are fixed on the outer side of the turntable (6), and the outer side of the baffles (34) is in contact with the outer side of the positioning ring (17).

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