A cutting and chamfering device for rivet production
Patent Information
- Application Number
- CN202611111023.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-24
- Publication Date
- 2026-10-23
AI Technical Summary
[0004]上述现有的铆钉倒角加工方式在实际批量生产中仍存在诸多不足：一方面，受前序切断、冷镦工序尺寸波动影响，不可避免地会混入少量铆杆长度超出规格公差范围的异常品，这些铆杆过长的异常铆钉被正常输送至加工工位后，夹具仍按常规程序对其进行夹持与倒角加工，但加工完成后的铆钉因杆长无法满足装配要求，仍需在后续质检环节中的剔除；另一方面，在连续的流水线作业中，倒角刀具与铆钉端部长期高速摩擦会产生大量热量，虽然部分设备配备有吹气管路，通过向刀具工作区域持续吹送压缩空气以实现降温与排屑，但压缩空气比热容较低，单位体积空气所能带走的热量极为有限，在长期连续作业条件下，倒角刀具始终处于较高温度的工作状态，加速了刀具的磨损与热疲劳
1、为了实现倒角刀具在工作间歇期的快速强制降温，本发明将倒角机设置于铆钉加工工位的下方，并将冷却壳体安装于倒角机刀头的升降行程路径上，当每次倒角加工完成、刀头随倒角机下移复位时，刀头自动进入冷却壳体内部，此时通过抽液组件向冷却壳体内注入冷却液，使刀头完全浸没于冷却液中，通过上述刀头浸没式冷却结构，冷却液直接包裹刀头的全部高温工作端面及切削刃口区域，实现全方位、无死角的液固直接接触换热，相较于现有技术中压缩空气仅能作用于刀具外表面的吹气降温方式，本方案中冷却液的比热容远高于空气，且刀头整体浸没于冷却液中时换热面积最大、冷却介质与热源之间的传热路径最短，同时，每当刀头完成一次加工即进行一次浸没式冷却，使刀头在每一个工作循环周期内均获得充分的降温，有效避免了长期连续作业中热量的逐次累积。
Smart Images
Figure CN122956246A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rivet cutting and chamfering technology, specifically to a cutting and chamfering device for rivet production. Background Technology
[0002] In the manufacturing process of rivets, chamfering is an important step in the treatment of the end face of the rivet shank. By machining a chamfered or arc-shaped surface with a certain angle and width at one end of the rivet shank, the rivet can be more easily guided into the riveting hole during assembly.
[0003] Currently, in the mass production of rivets, vibratory feeder conveyors are usually used to achieve automatic feeding and directional conveying of rivets. After being sorted by the vibratory feeder, the rivets are arranged in a uniform horizontal position and output. They are then conveyed to the processing station by a linear feeder. After arriving at the station, the rivets are clamped and fixed by a fixture. Then, the spindle of the chamfering machine drives the chamfering cutter to rotate at high speed to cut and chamfer the end of the rivet.
[0004] The existing rivet chamfering process still has many shortcomings in actual mass production: On the one hand, due to the dimensional fluctuations in the preceding cutting and cold heading processes, a small number of defective rivets with rivet lengths exceeding the specification tolerance range will inevitably be mixed in. After these abnormal rivets with excessively long rivets are normally transported to the processing station, the fixture still clamps and chamfers them according to the conventional procedure. However, the finished rivets still need to be rejected in the subsequent quality inspection process because the rivet length cannot meet the assembly requirements. On the other hand, in continuous assembly line operations, the chamfering tool and the rivet end will generate a lot of heat due to long-term high-speed friction. Although some equipment is equipped with air blowing pipes to continuously blow compressed air into the tool working area to achieve cooling and chip removal, the specific heat capacity of compressed air is low, and the heat that a unit volume of air can carry away is extremely limited. Under long-term continuous operation conditions, the chamfering tool is always in a high-temperature working state, which accelerates the wear and thermal fatigue of the tool. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention provides a cutting and chamfering device for rivet production, which integrates rivet screening and cutting with chamfering, as well as rapid cooling of the cutting head.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a cutting and chamfering device for rivet production, comprising an operating table, a rivet conveying component rotatably mounted on the upper end of the operating table, the rivet conveying component including a turntable, the turntable having multiple slots for placing rivets on its periphery, a mounting frame fixedly mounted on the operating table, a cutting device fixedly mounted on the mounting frame, a fixing component for protecting the rivets before processing mounted on the outer side of the turntable, a clamping component for fixing the rivets provided on the outer side of the turntable, one end of the clamping component being fixedly connected to the mounting frame, a chamfering device fixedly mounted on the operating table, the chamfering device including a chamfering machine, an annular liquid storage shell fixedly mounted on the upper end of the operating table, a cooling shell provided above the annular liquid storage shell, a liquid extraction component fixedly mounted inside the annular liquid storage shell, a cylinder rotatably sleeved on the outer side of the chamfering machine's cutter head, the cutter head and the cylinder both penetrating the liquid extraction component and the cooling shell, the liquid extraction component being used to extract coolant into the cooling shell to cool the cutter head.
[0007] Preferably, it also includes a vibratory feeder located on one side of the operating table, wherein the discharge end of the vibratory feeder is connected to the bayonet of the turntable.
[0008] Preferably, the rivet conveyor further includes a stepper motor fixedly installed in the operating table, the output end of the stepper motor being fixedly connected to the turntable, the turntable being rotatably installed on the operating table, and a plurality of the bayonet slots being equally spaced around the turntable.
[0009] Preferably, the fixing member includes an arc-shaped baffle located on the outside of the turntable. The arc-shaped baffle is fixedly installed on the operating table and is used to prevent the rivet from falling out of the bayonet before chamfering.
[0010] Preferably, the cutting device includes an electric actuator fixedly mounted on a mounting frame, the working end of the electric actuator being fixedly mounted with a mounting plate slidably connected to the mounting frame, and a cutting machine for shortening rivets being fixedly mounted on the mounting plate.
[0011] Preferably, the clamping component includes a U-shaped clamping block located outside the turntable. The two side plates of the U-shaped clamping block are used to press against the rivet head and rivet rod of the rivet, respectively. The U-shaped clamping block cooperates with the side wall of the jaw to clamp the rivet. There are two U-shaped clamping blocks, located on the side of the chamfering machine and the cutting machine, respectively. A connecting plate is fixedly installed on the upper end of each of the two U-shaped clamping blocks. A sleeve is fixedly installed on the mounting bracket. Both connecting plates are slidably connected to the sleeve. A push rod is fixedly connected to one end of one of the connecting plates to push the finished rivet out of the jaw. A power motor is fixedly installed inside the sleeve. A chuck is fixedly installed at the output end of the power motor. The two connecting plates are staggered. Multiple clamping blocks matching the chuck are fixedly installed on one side of the connecting plate.
[0012] Preferably, the chamfering device further includes a cylinder fixedly installed in the operating table, a motor bracket fixedly installed at the working end of the cylinder, the chamfering machine fixedly installed on the motor bracket, the lower end of the cylinder fixedly installed on the outer shell of the chamfering machine, and the upper end of the cylinder rotatably connected to the cutter head through an oil seal bearing.
[0013] Preferably, the liquid extraction assembly includes a fixed cylinder fixedly installed inside the annular liquid storage shell, a cooling shell fixedly installed on the upper end of the fixed cylinder, a conduit fixedly connected between the lower end of the cooling shell and the annular liquid storage shell, a connecting pipe fixedly connected between the lower end of the fixed cylinder and the cooling shell, a liquid extraction pipe fixedly connected between the lower end of the fixed cylinder and the inside of the annular liquid storage shell, a one-way valve fixedly installed at one end of both the liquid extraction pipe and the connecting pipe, a sealing block for sealing the conduit fixedly installed inside the cooling shell, and a piston fixedly sleeved inside the fixed cylinder.
[0014] Preferably, multiple heat dissipation shells are fixedly connected to the outside of the annular liquid storage shell.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. To achieve rapid forced cooling of the chamfering tool during work breaks, this invention places the chamfering machine below the riveting station and installs the cooling housing on the lifting stroke path of the chamfering machine's cutting head. Each time a chamfering operation is completed and the cutting head returns to its original position with the chamfering machine, the cutting head automatically enters the cooling housing. At this time, coolant is injected into the cooling housing through a liquid extraction component, completely immersing the cutting head in the coolant. Through this immersion cooling structure, the coolant directly coats the entire high-temperature working surface and cutting edge of the cutting head. The solution achieves comprehensive, all-around, direct liquid-solid contact heat exchange. Compared to the existing technology where compressed air can only act on the outer surface of the tool for cooling, the specific heat capacity of the coolant in this solution is much higher than that of air. Furthermore, the heat exchange area is maximized and the heat transfer path between the cooling medium and the heat source is minimized when the entire tool head is immersed in the coolant. In addition, immersion cooling is performed every time the tool head completes a machining operation, ensuring that the tool head receives sufficient cooling in each work cycle and effectively avoiding the gradual accumulation of heat during long-term continuous operation.
[0016] 2. To achieve integrated screening, cutting, and chamfering of rivets, this invention fixes an electric actuator to a mounting frame, a mounting plate to the working end of the electric actuator, and a cutting machine to the mounting plate. When the turntable conveys rivets one by one to the cutting station, the electric actuator controls the lateral feed of the cutting machine to cut and repair abnormal rivets whose length exceeds the tolerance range online. Through the sequential linkage of screening, cutting, and chamfering, abnormal length rivets are identified and corrected in real time before the chamfering process. This transforms defective products that originally needed to be processed and then rejected into qualified products that can directly enter the chamfering process. This achieves online screening and synchronous repair of abnormal materials, avoiding tool wear, wasted time, and ineffective energy consumption caused by abnormal rivets flowing into the subsequent chamfering process.
[0017] 3. To achieve automatic on-demand supply and real-time recovery of coolant between the cutting head processing and cooling states, this invention, during the downward movement of the chamfering machine, uses a cylinder to push a piston, squeezing and delivering the coolant in the fixed cylinder to the cooling housing, allowing the cutting head to receive immersion cooling during resetting. When the chamfering machine moves upward for chamfering, the coolant in the annular reservoir is automatically replenished into the fixed cylinder through the extraction pipe. Simultaneously, the conduit is opened, and the coolant in the cooling housing flows back to the annular reservoir under gravity, achieving real-time coolant recovery. This ensures that the coolant only enters the cooling housing to participate in cooling when the cutting head is in the cooling position, and is quickly extracted when the cutting head rises for processing. This avoids the problem of coolant continuously remaining in the cooling housing, causing splashing during cutting head operation, and also enables coolant replacement. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the turntable, the mounting frame, and the annular liquid storage shell of the present invention. Figure 3 This is a schematic diagram showing the disassembled structure of the turntable and mounting bracket of the present invention; Figure 4 This is a three-dimensional cross-sectional structural diagram of the sleeve of the present invention; Figure 5 This is a side-view perspective three-dimensional cross-sectional structural diagram of the annular liquid storage shell of the present invention; Figure 6 This is a frontal perspective three-dimensional cross-sectional view of the annular liquid storage shell of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the cylinder and cooling shell of the present invention.
[0019] In the diagram: 1. Operating table; 2. Vibratory feeder; 3. Turntable; 4. Mounting frame; 5. Annular liquid storage shell; 6. Bayonet; 7. Arc-shaped baffle; 8. Cutting machine; 9. Stepper motor; 10. Electric actuator; 11. Mounting plate; 12. Liquid extraction pipe; 13. Cylinder; 14. Motor bracket; 15. Heat dissipation shell; 16. Push rod; 17. Sleeve; 18. U-shaped clamp; 19. Connecting plate; 20. Chamfering machine; 21. Piston; 22. Sealing block; 23. Clamp; 24. Chuck; 25. Power motor; 26. Fixed cylinder; 27. Cylinder; 28. Cooling shell; 29. Connecting pipe; 30. Conduit. Detailed Implementation
[0020] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
[0021] Please see Figures 1-7 A cutting and chamfering device for rivet production includes an operating table 1 and a vibratory feeder 2 (an existing device) mounted on one side of the operating table 1, which automatically feeds and directs rivets in a uniform vertical arrangement before conveying them to the processing station via a linear feeder. A rivet conveying component, including a turntable 3, is rotatably mounted on the upper end of the operating table 1. The turntable 3 has multiple slots 6 around its perimeter for placing rivets. The discharge end of the vibratory feeder 2 (i.e., the linear feeder mentioned above) is connected to the slots 6 of the turntable 3. A mounting frame 4 is fixedly mounted on the operating table 1, and a cutting device is fixedly mounted on the mounting frame 4. A chamfering device, including a chamfering machine 20, is also fixedly mounted on the operating table 1. The cutting device includes an electric push rod 10 fixedly mounted on the mounting frame 4. The working end of the electric push rod 10 is fixedly mounted with a mounting plate 11 that is slidably connected to the mounting frame 4. A cutting machine 8 for shortening rivets is fixedly mounted on the mounting plate 11. The height of the cutting blade of the cutting machine 8 is flush with the lower end of the qualified rivet (with a slight gap between them). When the electric push rod 10 controls the cutting machine 8 to move to the side of the rivet (the cutting machine 8 is in working state before moving), if it is of qualified length, the cutting machine 8 will work and will not cut the rivet. If the rivet is too long, the cutting machine 8 will cut off the excess part. The rivets screened out are cut to make their length conform to the normal specifications, and then they can directly enter the chamfering process, realizing the integration of screening and cutting / chamfering. The rivet conveying component also includes a stepper motor 9 fixedly installed in the operating table 1. The output end of the stepper motor 9 is fixedly connected to the turntable 3. The turntable 3 is rotatably installed on the operating table 1. Multiple bayonets 6 are equally spaced around the turntable 3. The turntable 3 rotates to convey rivets. The cutting machine 8 is the cutting station, and the chamfering machine 20 is the chamfering station. When conveying rivets, the turntable 3 first passes through the cutting station for screening, and then enters the chamfering station for chamfering. The outside of the turntable 3 is equipped with a fixing component to protect the rivets before processing (i.e., protection before cutting and chamfering). The fixing component includes an arc-shaped baffle 7 located on the outside of the turntable 3. The arc-shaped baffle 7 is fixedly installed on the operating table 1. The arc-shaped baffle 7 is used to prevent the rivets from falling out of the bayonets 6 before cutting and chamfering. When cutting and chamfering, the rivets are limited by the cooperation between the arc-shaped baffle 7 and the bayonets 6 of the turntable 3, which facilitates the precise clamping of the subsequent clamping components. A clamping device for fixing rivets is provided on the outer side of the turntable 3. One end of the clamping device is fixedly connected to the mounting bracket 4. An annular liquid storage shell 5 is fixedly installed on the upper end of the operating table 1. A cooling shell 28 is provided above the annular liquid storage shell 5. A liquid extraction component is fixedly installed on the inner side of the annular liquid storage shell 5. A cylinder 27 is rotatably sleeved on the outer side of the cutter head of the chamfering machine 20. Both the cutter head and the cylinder 27 pass through the liquid extraction component and the cooling shell 28. The liquid extraction component is used to draw coolant into the cooling shell 28 to cool the cutter head. The chamfering equipment also includes a cylinder 13 fixedly installed in the operating table 1. A motor bracket 14 is fixedly installed on the working end of the cylinder 13. The chamfering machine 20 is fixedly installed on the motor bracket 14. The lower end of the cylinder 27 is fixedly installed on the motor bracket 14. The cylinder 27 is mounted on the outer shell of the chamfering machine 20. The upper end of the cylinder 27 is rotatably connected to the cutter head via an oil-sealed bearing. The chamfering machine 20 is positioned below the riveting station. The cooling housing 28 is installed on the lifting stroke path of the cutter head of the chamfering machine 20. After each chamfering operation, the cutter head moves down and resets with the chamfering machine 20. The cutter head automatically enters the interior of the cooling housing 28 and is completely immersed in the coolant. Immersion cooling allows the coolant to directly wrap around the outside of the cutter head, achieving all-round, dead-angle-free liquid-solid direct contact heat exchange (the cylinder 27 is slidably connected to the fixed cylinder 26 and the cooling housing 28, and the sliding connection is sealed. Existing Y-type sealing rings or other methods can be used to achieve sliding sealing). The liquid extraction assembly includes a fixed cylinder 26 fixedly installed inside the annular liquid storage shell 5 (the annular liquid storage shell 5 can be an industrial cooling box with built-in cooling function, or other types of cooling boxes; multiple heat dissipation shells 15 are fixedly connected to the outside of the annular liquid storage shell 5 to increase the contact area with air and accelerate heat dissipation); a cooling shell 28 is fixedly installed on the upper end of the fixed cylinder 26; a conduit 30 is fixedly connected between the lower end of the cooling shell 28 and the annular liquid storage shell 5 (the size of the conduit 30 is not limited; the corresponding debris liquid can enter the annular liquid storage shell 5 through the conduit 30; the annular liquid storage shell 5 can be opened and cleaned periodically); a connecting pipe 29 is fixedly connected between the lower end of the fixed cylinder 26 and the cooling shell 28; a liquid extraction pipe 12 is fixedly connected between the lower end of the fixed cylinder 26 and the inside of the annular liquid storage shell 5; a one-way valve is fixedly installed at one end of both the liquid extraction pipe 12 and the connecting pipe 29; and a sealing block 22 for sealing the conduit 30 is fixedly installed inside the cooling shell 28 on the cylinder 27. The cylinder 27 is fixedly fitted with a piston 21 inside the fixed cylinder 26. During the downward movement of the chamfering machine 20 controlled by the cylinder 13, the chamfering machine 20 drives the cylinder 27 downward. The cylinder 27 pushes the piston 21 to squeeze and transport the coolant in the fixed cylinder 26 to the cooling housing 28 through the connecting pipe 29. At this time, the cutter head moves into the cooling housing 28 to obtain immersion cooling. When the cylinder 13 pushes the chamfering machine 20 upward to perform chamfering work, the coolant in the annular liquid storage housing 5 can be automatically replenished into the fixed cylinder 26 through the liquid extraction pipe 12. At the same time, the sealing block 22 moves upward and the guide tube 30 is opened (the guide tube 30 is a rigid pipe, and the lower end of the sealing block 22 is inserted into the guide tube 30. The guide tube 30 will only be opened after it rises to a certain height). The coolant in the cooling housing 28 flows back into the annular liquid storage housing 5 under the action of gravity, which avoids the coolant continuously stagnating in the cooling housing 28 and causing the liquid surface to splash when the cutter head is working. At the same time, the coolant can be replaced.
[0022] As a further technical solution of the present invention, the clamping component includes a U-shaped clamping block 18 located outside the turntable 3. The two side plates of the U-shaped clamping block 18 are used to press against the rivet head and rivet rod of the rivet, respectively. The U-shaped clamping block 18 cooperates with the side wall of the bayonet 6 to clamp the rivet. Two U-shaped clamping blocks 18 are provided, located on the side of the chamfering machine 20 and the cutting machine 8, respectively. A connecting plate 19 is fixedly installed on the upper end of each of the two U-shaped clamping blocks 18. A sleeve 17 is fixedly installed on the mounting bracket 4. Both connecting plates 19 are slidably connected to the sleeve 17. A push rod 16 is fixedly connected to one end of one of the connecting plates 19 for pushing the finished rivet out of the bayonet 6. A power motor 25 is fixedly installed inside the sleeve 17. A chuck 24 is fixedly installed at the output end of the power motor 25. The two connecting plates 19 are staggered. Multiple clamping blocks 23 that match the chuck 24 are fixedly installed on one side of the connecting plate 19. After the turntable 3 completes each conveying operation, the turntable 3 stops working, and the power motor 25 rotates forward first. Through the cooperation of the chuck 24 and the clamping blocks 23, the two connecting plates 19 are driven to move, which drives the two U-shaped clamping blocks 18 to clamp the rivets at the cutting station and the chamfering station respectively. After the cutting and chamfering are completed, the power motor 25 first controls the two U-shaped clamping blocks 18 to disengage from the rivets corresponding to the positions. Then the turntable 3 continues to work. The chamfered rivets are released from the limit of the arc-shaped baffle 7 and can be released from the corresponding bayonet 6 under the action of centrifugal force. If they are not released, when the power motor 25 drives the U-shaped clamping blocks 18 to perform clamping work, it will push the push rod 16 to move and push the processed rivets out of the bayonet 6.
[0023] During work: (a) Automatic feeding stage Start the vibratory feeder 2. After being sorted by the vibratory feeder, the rivets are arranged in a uniform vertical position and output. They are then fed one by one into the bayonet 6 of the turntable 3 by the linear feeder. The outline of the bayonet 6 is adapted to the outer diameter of the rivet shank, so that the rivets are kept in a vertical position in the bayonet 6. The arc-shaped baffle 7 on the outside of the turntable 3 limits the rivets in the bayonet 6 to prevent the rivets from falling off the outside of the bayonet 6 before reaching the processing station. Start the stepper motor 9 to drive the turntable 3 to rotate intermittently at a set angle, and transport the rivet-loaded bayonet 6 to the cutting station (where the cutting machine 8 is located) in sequence, and then to the chamfering station (where the chamfering machine 20 is located). The arc-shaped baffle 7 always keeps the rivet in a limited position before the rivet reaches the cutting station and the chamfering station, ensuring that the rivet is stable in posture during the transmission process. (II) Length screening and online correction stage When the chuck 6 loaded with rivets reaches the cutting station, the turntable 3 stops rotating and the power motor 25 inside the sleeve 17 starts to rotate forward. The output end of the power motor 25 drives the chuck 24 to rotate. Through the cooperation between the chuck 24 and the locking blocks 23 on the two connecting plates 19, the two connecting plates 19 are driven to slide inside the sleeve 17, which drives the two U-shaped locking blocks 18 to move towards the cutting station and the chamfering station respectively. The two side plates of the U-shaped locking block 18 located at the cutting station press against the rivet head and rivet rod of the rivet respectively, and cooperate with the side wall of the chuck 6 to clamp and fix the rivet. The cutting machine 8 maintains high-speed rotation, and the electric actuator 10 extends, pushing the mounting plate 11 and the cutting machine 8 to feed laterally along the mounting frame 4 towards the rivet direction. If the rivet length is acceptable: the end of the rivet shank should not exceed the cutting position of the cutting machine 8, and the rivet should remain as is. If the rivet is too long: the cutting blade of the cutting machine 8 contacts the end of the rivet rod and cuts off the excess part that exceeds the qualified length, so that the length of the rivet rod is restored to within the specification tolerance range. After the cutting is completed, the electric push rod 10 retracts, driving the cutting machine 8 back to the initial position, correcting the abnormal length rivet to a qualified product before entering the chamfering process, avoiding the abnormal product from flowing into the subsequent process and causing invalid processing loss, thus realizing the integration of screening cutting and cutting chamfering; (III) Chamfering stage In the second stage, the two U-shaped clamps 18 move simultaneously. The U-shaped clamps 18 located at the chamfering station clamps and fixes the rivets in the chamfering station slot 6 in a synchronous manner, so that the rivets are kept in a vertical position with the rivet rod end facing down and aligned with the cutter head of the chamfering machine 20. Start cylinder 13 to push motor bracket 14 and chamfering machine 20 to rise vertically. The cutter head of chamfering machine 20 approaches the end of the rivet from below. When the cutter head contacts the end face of the rivet, the spindle of chamfering machine 20 drives the cutter head to rotate at high speed to perform chamfering on the end of the rivet, and process a chamfered bevel or arc surface with a certain angle and width at the end of the rivet. After the cutting is completed, cylinder 13 retracts, driving chamfering machine 20 and cutter head to move down and reset. (iv) Immersion Cooling Stage of the Cutting Head In the third stage, during the process of the cylinder 13 controlling the chamfering machine 20 to move down and reset, the chamfering machine 20 drives the cylinder 27 on its outer shell to move down synchronously, and the cutting head moves down with the chamfering machine 20 and automatically enters the cooling shell 28. The cylinder 27 moves down, pushing the piston 21, which is fixedly sleeved on the cylinder 27, to move down inside the fixed cylinder 26. The piston 21 squeezes and delivers the coolant in the fixed cylinder 26 to the cooling housing 28 through the connecting pipe 29. The coolant accumulates in the cooling housing 28, so that the cutter head can be completely immersed in the coolant, achieving rapid cooling. When the chamfering machine 20 is pushed upward again by the cylinder 13 to carry out the next round of chamfering work, the cutting head rises out of the cooling housing 28, the cylinder 27 moves upward, the piston 21 moves upward in the fixed cylinder 26, a negative pressure is generated in the fixed cylinder 26, and coolant is drawn from the annular liquid storage housing 5 through the liquid extraction pipe 12 and automatically replenished to the fixed cylinder 26. At the same time, the sealing block 22 fixedly installed on the cylinder 27 moves upward, and the conduit 30, which was originally blocked by the sealing block 22, is opened (the conduit 30 can only be opened after the cylinder 27 rises to a certain height). The coolant in the cooling shell 28 flows back to the annular liquid storage shell 5 through the conduit 30 under the action of gravity. Each time the cutter completes a machining operation, an immersion cooling is performed. (v) Unloading stage After the chamfering is completed, the power motor 25 reverses and drives the two connecting plates 19 to slide in the opposite direction through the cooperation of the chuck 24 and the clamping block 23. This causes the two U-shaped clamping blocks 18 to move backward, releasing the clamping of the rivets at the cutting and chamfering stations. After the clamping is released, the rivets at the cutting and chamfering stations lose the pressure of the U-shaped clamping blocks 18. The finished rivets at the chamfering station, which have already undergone chamfering, are now out of the limiting area of the arc-shaped baffle 7. When the turntable 3 rotates again, the finished rivets are automatically thrown out of the jaw 6 by centrifugal force. If some rivets do not fall off automatically, when the power motor 25 rotates forward again to drive the U-shaped clamping block 18 to move in the clamping direction, the push rod 16 fixed at the end of one of the connecting plates 19 will move forward at the same time, pushing the unfallen finished rivets out of the jaw 6 to ensure complete unloading.
[0024] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the claims of the present invention.
Claims
1. A cutting and chamfering device for rivet production, comprising an operating table (1), characterized in that, A rivet conveying component is rotatably mounted on the upper end of the operating table (1). The rivet conveying component includes a turntable (3). Multiple slots (6) for placing rivets are opened on the periphery of the turntable (3). A mounting frame (4) is fixed on the operating table (1). A cutting device is fixedly mounted on the mounting frame (4). A fixing component for protecting the rivets before processing is installed on the outside of the turntable (3). A clamping component for fixing the rivets is provided on the outside of the turntable (3). One end of the clamping component is fixedly connected to the mounting frame (4). The operating table (1) is fixed with... The device is equipped with a chamfering device, which includes a chamfering machine (20). An annular liquid storage shell (5) is fixedly installed on the upper end of the operating table (1). A cooling shell (28) is provided above the annular liquid storage shell (5). A liquid extraction component is fixedly installed on the inner side of the annular liquid storage shell (5). A cylinder (27) is rotatably sleeved on the outer side of the cutter head of the chamfering machine (20). Both the cutter head and the cylinder (27) penetrate the liquid extraction component and the cooling shell (28). The liquid extraction component is used to extract coolant into the cooling shell (28) to cool the cutter head.
2. The cutting and chamfering device for rivet production according to claim 1, characterized in that, It also includes a vibratory feeder (2) set on one side of the operating table (1), the discharge end of the vibratory feeder (2) being connected to the bayonet (6) of the turntable (3).
3. A cutting and chamfering device for rivet production according to claim 2, characterized in that, The rivet conveyor also includes a stepper motor (9) fixedly installed in the operating table (1). The output end of the stepper motor (9) is fixedly connected to the turntable (3). The turntable (3) is rotatably installed on the operating table (1). Multiple bayonets (6) are equally spaced around the turntable (3).
4. A cutting and chamfering device for rivet production according to claim 3, characterized in that, The fastener includes an arc-shaped baffle (7) located outside the turntable (3), which is fixedly installed on the operating table (1) and is used to prevent the rivet from falling out of the bayonet (6) before the chamfering is performed.
5. A cutting and chamfering device for rivet production according to claim 4, characterized in that, The cutting device includes an electric push rod (10) fixedly mounted on a mounting frame (4). The working end of the electric push rod (10) is fixedly mounted with a mounting plate (11) that is slidably connected to the mounting frame (4). A cutting machine (8) for shortening rivets is fixedly mounted on the mounting plate (11).
6. A cutting and chamfering device for rivet production according to claim 5, characterized in that, The clamping component includes a U-shaped clamping block (18) located outside the turntable (3). The two side plates of the U-shaped clamping block (18) are used to press against the rivet head and rivet rod of the rivet, respectively. The U-shaped clamping block (18) cooperates with the side wall of the bayonet (6) to clamp the rivet. There are two U-shaped clamping blocks (18), located on the side of the chamfering machine (20) and the cutting machine (8), respectively. A connecting plate (19) is fixedly installed on the upper end of each of the two U-shaped clamping blocks (18). A sleeve (17) is fixedly installed on the mounting bracket (4). Both connecting plates (19) are slidably connected to the sleeve (17). One end of one connecting plate (19) is fixedly connected to a push rod (16) for pushing the finished rivet out of the bayonet (6). A power motor (25) is fixedly installed inside the sleeve (17). A chuck (24) is fixedly installed at the output end of the power motor (25). The two connecting plates (19) are staggered. Multiple locking blocks (23) matching the chuck (24) are fixedly installed on one side of the connecting plate (19).
7. A cutting and chamfering device for rivet production according to claim 6, characterized in that, The chamfering equipment also includes a cylinder (13) fixedly installed in the operating table (1). A motor bracket (14) is fixedly installed at the working end of the cylinder (13). The chamfering machine (20) is fixedly installed on the motor bracket (14). The lower end of the cylinder (27) is fixedly installed on the outer shell of the chamfering machine (20). The upper end of the cylinder (27) is rotatably connected to the cutter head through an oil seal bearing.
8. A cutting and chamfering device for rivet production according to claim 7, characterized in that, The liquid extraction assembly includes a fixed cylinder (26) fixedly installed inside the annular liquid storage shell (5), a cooling shell (28) fixedly installed on the upper end of the fixed cylinder (26), a conduit (30) fixedly connected between the lower end of the cooling shell (28) and the annular liquid storage shell (5), a connecting pipe (29) fixedly connected between the lower end of the fixed cylinder (26) and the cooling shell (28), a liquid extraction pipe (12) fixedly connected between the lower end of the fixed cylinder (26) and the annular liquid storage shell (5), a one-way valve fixedly installed at one end of the liquid extraction pipe (12) and the connecting pipe (29), a sealing block (22) for sealing the conduit fixedly installed inside the cooling shell (28) of the cylinder (27), and a piston (21) fixedly sleeved inside the fixed cylinder (26) of the cylinder (27).
9. A cutting and chamfering device for rivet production according to claim 8, characterized in that, Multiple heat dissipation shells (15) are fixedly connected to the outside of the annular liquid storage shell (5).