Special clamping device for tapping special-shaped component

Abstract

The invention relates to the technical field of special-shaped component clamping, in particular to a special-shaped component tapping clamping device which comprises a mounting box and a fixing plate fixedly connected to the top face of the mounting box, and a plurality of clamping mechanisms are arranged on the top face of the fixing plate. A rotating motor drives a gear ring to rotate and drives a plurality of second gears and a first bevel gear to synchronously rotate, then a second bevel gear drives a lead screw to rotate, synchronous sliding clamping of a plurality of U-shaped plates along a limiting rod is achieved, during clamping, an air pump injects air into an abutting box through a connecting pipe, the extension length of abutting columns in a plurality of fixing pipes is independently adjusted, and the clamping efficiency is improved. And the abutting column compresses the spring to be attached in a self-adaptive mode according to the surface profile of the special-shaped component, uniform distribution of clamping force is guaranteed, the special-shaped component clamping device can be perfectly matched with a complex curved surface, the positioning precision and the clamping stability are remarkably improved, and the special-shaped component clamping device is beneficial to being matched with workpieces of multiple specifications.

Description

Technical Field

[0001] This invention relates to the field of irregular component clamping technology, specifically a special clamping device for tapping irregular components. Background Technology

[0002] Tapping irregularly shaped components refers to the process of machining internal threads on workpieces with irregular shapes. The core challenge lies in the difficulty of workpiece positioning and uneven cutting forces. Therefore, this operation places extremely high demands on equipment rigidity, tool chip removal performance, and clamping stability, aiming to ensure thread accuracy and prevent tap breakage or workpiece damage due to vibration during machining.

[0003] Irregularly shaped components, due to their irregular shape and difficulty in positioning, are prone to vibration or misalignment during tapping. The core importance lies in: precise clamping ensures that the tap is perpendicularly aligned with the center line of the bottom hole, preventing tapping misalignment and tap breakage; simultaneously, it absorbs cutting torque, guarantees thread accuracy, and avoids workpiece damage, which is a fundamental prerequisite for achieving high-quality, high-safety machining.

[0004] In existing tapping technology for irregularly shaped components, the contour groove clamping method is often used to ensure the positioning accuracy of irregularly shaped workpieces. This method involves designing and manufacturing a special fixture that perfectly matches the surface of the workpiece. Although it can achieve precise positioning and effectively prevent machining deformation, a single fixture can only be adapted to a single specification of workpiece, resulting in poor fixture versatility and difficulty in meeting the flexible production needs of multiple varieties and small batches. Therefore, we propose a special clamping device for tapping irregularly shaped components. Summary of the Invention

[0005] The purpose of this invention is to provide a special clamping device for tapping irregularly shaped components, so as to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions: A special clamping device for tapping irregularly shaped components includes a mounting box and a fixing plate fixedly connected to the top surface of the mounting box. The top surface of the fixing plate is provided with multiple clamping mechanisms, and the top surface of the mounting box is provided with a transmission mechanism for driving the multiple clamping mechanisms to clamp the irregularly shaped components. The transmission mechanism includes a toothed ring that rotates and is fixed on the top surface of the plate. The inner ring surface of the toothed ring is circumferentially arrayed with multiple second gears, and each second gear is fixedly connected to a bevel gear at its top. A discharge trough is provided through the middle of the fixing plate; The clamping mechanism includes a support plate detachably connected to the top surface of the fixed plate. A rotating rod is rotatably sleeved on the support plate. A second bevel gear and a lead screw are fixedly connected to both ends of the rotating rod, respectively. The second bevel gear meshes with the first bevel gear. A limit rod is fixedly connected to the surface of the support plate. A U-shaped plate is slidably sleeved on the limit rod. The side wall of the U-shaped plate is threaded onto the lead screw. An abutment box is detachably connected to the side wall of the U-shaped plate away from the lead screw. The clamping surface of the abutment box is provided with multiple abutment components. An air pump is provided on the top surface of the U-shaped plate, and a strip-shaped nozzle is provided on the bottom of the abutment box.

[0007] Preferably, the abutting component includes a plurality of fixing tubes fixedly sleeved on the clamping surface of the abutting box, and the plurality of fixing tubes are arranged in a rectangular array. Each of the fixed tubes is equipped with a spring, and a cross plate and an abutment post are fixedly connected to both ends of the spring, respectively. The cross plate is fixedly connected to the inner wall of the fixed tube, and the surface of the abutment post is slidably connected to the inner wall of the fixed tube, with the abutment end of the abutment post always located outside the fixed tube.

[0008] Preferably, the clamping mechanism further includes a connecting pipe detachably connected to the exhaust end of the air pump, the exhaust end of the connecting pipe being detachably connected to the air inlet end of the abutment box, the exhaust end of the abutment box being detachably connected to a valve, the exhaust end of the valve being detachably connected to an exhaust pipe, and the exhaust end of the exhaust pipe being detachably connected to the air inlet end of the strip nozzle.

[0009] Preferably, the transmission mechanism further includes a transmission rod rotatably sleeved on the top of the fixed plate, a first gear fixedly connected to the top end of the transmission rod, an arc-shaped rack meshing with the surface of the first gear, and the surface of the arc-shaped rack fixedly connected to the outer ring surface of the gear ring.

[0010] Preferably, the inner cavity of the mounting box is provided with a mounting groove, and a rotating motor is detachably mounted in the inner cavity of the mounting groove. The output end of the rotating motor is detachably connected to the bottom end of the transmission rod.

[0011] Preferably, the inner cavity of the mounting box is further provided with a collection groove, and the top wall of the collection groove is provided with a circular groove that is connected to the discharge groove.

[0012] Preferably, the side wall of the mounting box is detachably connected to a sealing plate for sealing the mounting groove and the circular groove.

[0013] The beneficial effects of this invention are: 1. This invention utilizes a precise coordination between a transmission mechanism and a clamping mechanism. A rotating motor drives a gear ring to rotate, which in turn drives multiple second gears and a bevel gear to rotate synchronously. This, in turn, causes the bevel gear to drive a lead screw to rotate, enabling multiple U-shaped plates to slide and clamp synchronously along a limiting rod. During clamping, an air pump injects gas into the abutment box through a connecting pipe. The extension length of the abutment pins in multiple fixed pipes is independently adjusted, allowing the abutment pins to adaptively conform to the compression springs according to the surface contour of the irregularly shaped component. This ensures a uniform distribution of clamping force and perfectly adapts to complex curved surfaces, significantly improving positioning accuracy and clamping stability. It is beneficial for adapting to various workpiece specifications and meeting the flexible production needs of multiple varieties and small batches of irregularly shaped components.

[0014] 2. In this invention, the valve is closed during tapping, and all compressed air is used to maintain the adaptive clamping state of the abutment post, ensuring processing stability. After tapping is completed, the valve is opened, and the compressed gas stored in the abutment box is released instantly. It is sprayed out at high speed from the strip nozzle through the valve and exhaust pipe, forming a directional airflow that blows the waste into the circular groove through the discharge groove, and finally falls into the collection groove for unified collection. The residual pressure of the clamping air path is used to achieve instant cleaning, which simplifies the operation process and keeps the processing area clean. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective; Figure 3 This is a three-dimensional partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the transmission mechanism of the present invention; Figure 5 This is a schematic diagram of the clamping mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the contact component of the present invention.

[0016] The attached figures are labeled as follows: 1. Mounting box; 2. Sealing plate; 3. Transmission mechanism; 31. Gear ring; 32. Arc-shaped rack; 33. First gear; 34. Transmission rod; 35. Second gear; 36. Bevel gear one; 4. Clamping mechanism; 41. Support plate; 42. Rotating rod; 43. Bevel gear two; 44. Lead screw; 45. Limiting rod; 46. U-shaped plate; 47. Abutment box; 48. Air pump; 49. Abutment assembly; 491. Fixing pipe; 492. Abutment column; 493. Cross plate; 494. Spring; 401. Valve; 402. Exhaust pipe; 403. Strip nozzle; 404. Connecting pipe; 5. Collection tank; 6. Mounting tank; 7. Rotating motor; 8. Fixing plate; 9. Circular groove; 10. Discharge trough. Detailed Implementation

[0017] 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.

[0018] Example 1: Please see Figures 1 to 4 This application provides a special clamping device for tapping irregularly shaped components, including a mounting box 1 and a fixing plate 8 fixedly connected to the top surface of the mounting box 1. The mounting box 1 is installed in a designated position by external bolts. Multiple clamping mechanisms 4 are provided on the top surface of the fixing plate 8. A transmission mechanism 3 for driving the multiple clamping mechanisms 4 to clamp the irregularly shaped components is provided on the top surface of the mounting box 1. The transmission mechanism 3 includes a toothed ring 31 rotatably sleeved on the top surface of the fixing plate 8. Multiple second gears 35 are circumferentially meshed on the inner ring surface of the toothed ring 31. Each second gear 35 has a bevel gear 36 fixedly connected to its top end. The transmission mechanism 3 also includes a transmission rod 34 rotatably sleeved on the top of the fixed plate 8. A first gear 33 is fixedly connected to the top end of the transmission rod 34. An arc-shaped rack 32 is meshed with the surface of the first gear 33. The surface of the arc-shaped rack 32 is fixedly connected to the outer ring surface of the gear ring 31. The inner cavity of the mounting box 1 is provided with a mounting groove 6. A rotating motor 7 is detachably installed in the inner cavity of the mounting groove 6. The output end of the rotating motor 7 is detachably connected to the bottom end of the transmission rod 34.

[0019] In practice, the rotating motor 7 is started, and the transmission rod 34 is driven to rotate through the output end of the rotating motor 7. The transmission rod 34 drives the first gear 33 at the top to rotate. The first gear 33 drives the gear ring 31 to rotate on the top surface of the fixed plate 8 through meshing with the arc-shaped rack 32. When the gear ring 31 rotates, it meshes with multiple second gears 35 at the same time, so that each second gear 35 rotates synchronously. The bevel gear 36 at the top of the second gear 35 rotates accordingly, thereby driving the corresponding transmission components in the subsequent clamping mechanism 4, and finally realizing the synchronous action of multiple clamping mechanisms 4, and adaptively clamping the irregular component from multiple directions.

[0020] Example 2: Based on Example 1, please refer to Figures 4 to 6 A discharge groove 10 is provided through the middle of the fixed plate 8. The clamping mechanism 4 includes a support plate 41 detachably connected to the top surface of the fixed plate 8. A rotating rod 42 is rotatably sleeved on the support plate 41. A bevel gear 43 and a lead screw 44 are fixedly connected to the two ends of the rotating rod 42, respectively. The bevel gear 43 meshes with the bevel gear 36. A limit rod 45 is fixedly connected to the surface of the support plate 41. A U-shaped plate 46 is slidably sleeved on the limit rod 45. The side wall of the U-shaped plate 46 is threaded onto the lead screw 44. An abutment box 47 is detachably connected to the side wall of the U-shaped plate 46 away from the lead screw 44. The clamping surface of the abutment box 47 is provided with multiple abutment components 4. 9. An air pump 48 is provided on the top surface of the U-shaped plate 46, and a strip-shaped nozzle 403 is provided on the bottom of the abutment box 47. The abutment assembly 49 includes multiple fixed tubes 491 fixedly sleeved on the clamping surface of the abutment box 47, and the multiple fixed tubes 491 are arranged in a rectangular array. Each fixed tube 491 has a spring 494 in its inner cavity. The two ends of the spring 494 are respectively fixedly connected to a cross plate 493 and an abutment post 492. The cross plate 493 is fixedly connected to the inner wall of the fixed tube 491, and the surface of the abutment post 492 is slidably connected to the inner wall of the fixed tube 491. The abutment end of the abutment post 492 is always located outside the fixed tube 491.

[0021] In specific implementation, by placing the irregular component at the center of the fixed plate 8, the toothed ring 31 rotates and drives multiple second gears 35 to rotate, so that each bevel gear 1 36 drives the meshing bevel gear 2 43 to rotate, and the bevel gear 2 43 drives the lead screw 44 to rotate through the rotating rod 42, so that the threaded U-shaped plate 46 slides in a straight line along the limiting rod 45, and drives multiple abutment boxes 47 to approach the irregular component. Then, the air pump 48 is started, and gas is simultaneously injected or drawn into multiple fixed tubes 491 through the air passage inside the abutment box 47. The airflow pushes the abutment post 492 to slide in the inner cavity of the fixed tube 491, compressing or releasing the spring 494, thereby dynamically adjusting the length of the abutment post 492 extending out of the fixed tube 491. Since the cross plate 493 is fixed and plays a guiding role, the spring 494 establishes a new balance between air pressure and elastic force, so that the abutment post 492 on different abutment boxes 47 can independently adjust the extension amount according to the surface contour of the component, so as to achieve uniform adaptive fitting and clamping of irregular curved surfaces.

[0022] Example 3: Based on Example 2, please refer to Figures 3 to 5 The clamping mechanism 4 also includes a connecting pipe 404 detachably connected to the exhaust end of the air pump 48. The exhaust end of the connecting pipe 404 is detachably connected to the air inlet end of the abutment box 47. A valve 401 is detachably connected to the exhaust end of the abutment box 47. An exhaust pipe 402 is detachably connected to the exhaust end of the valve 401. The exhaust end of the exhaust pipe 402 is detachably connected to the air inlet end of the strip nozzle 403. The inner cavity of the mounting box 1 is also provided with a collection groove 5. A circular groove 9 is provided through the top wall of the collection groove 5 and is connected to the discharge groove 10. A sealing plate 2 for sealing the mounting groove 6 and the circular groove 9 is detachably connected to the side wall of the mounting box 1.

[0023] In practice, when tapping, valve 401 is closed, and compressed air generated by air pump 48 enters the air passage inside the abutment box 47 through connecting pipe 404. Since valve 401 is closed, the airflow cannot be discharged from exhaust pipe 402, but instead acts on abutment post 492 through multiple fixed pipes 491 to maintain adaptive clamping state. After tapping is completed, valve 401 is opened, and the compressed gas in the inner cavity of the abutment box 47 is released instantly, carrying the debris accumulated during clamping. It is then sprayed out at high speed from the strip nozzle 403 through valve 401 and exhaust pipe 402. The sprayed airflow blows the waste from the processing area into the circular groove 9 through the discharge groove 10, and finally falls into the collection groove 5 for unified collection. The sealing plate 2 ensures that the mounting groove 6 and the circular groove 9 are in a closed state to prevent the waste from overflowing.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A special clamping device for tapping irregularly shaped components, comprising a mounting box (1) and a fixing plate (8) fixedly connected to the top surface of the mounting box (1), characterized in that, The top surface of the fixing plate (8) is provided with multiple clamping mechanisms (4), and the top surface of the mounting box (1) is provided with a transmission mechanism (3) for driving the multiple clamping mechanisms (4) to clamp the irregular components. The transmission mechanism (3) includes a toothed ring (31) on the top surface of the rotating sleeve fixed plate (8). The inner ring surface of the toothed ring (31) is circumferentially meshed with multiple second gears (35), and each second gear (35) is fixedly connected to a bevel gear (36) at its top. A discharge trough (10) is provided through the middle of the fixing plate (8); The clamping mechanism (4) includes a support plate (41) detachably connected to the top surface of the fixed plate (8). A rotating rod (42) is rotatably sleeved on the support plate (41). A bevel gear (43) and a lead screw (44) are fixedly connected to both ends of the rotating rod (42). The bevel gear (43) meshes with the bevel gear (36). A limit rod (45) is fixedly connected to the surface of the support plate (41). A U-shaped plate (46) is slidably sleeved on the limit rod (45). The side wall of the U-shaped plate (46) is threaded onto the lead screw (44). A contact box (47) is detachably connected to the side wall of the U-shaped plate (46) away from the lead screw (44). A plurality of contact components (49) are provided on the clamping surface of the contact box (47). An air pump (48) is provided on the top surface of the U-shaped plate (46), and a strip-shaped nozzle (403) is provided on the bottom of the abutment box (47).

2. The special clamping device for tapping irregularly shaped components according to claim 1, characterized in that, The abutting component (49) includes a plurality of fixing tubes (491) fixedly sleeved on the clamping surface of the abutting box (47), and the plurality of fixing tubes (491) are arranged in a rectangular array. Each of the fixed tubes (491) is provided with a spring (494) in its inner cavity. The two ends of the spring (494) are respectively fixedly connected to a cross plate (493) and an abutment post (492). The cross plate (493) is fixedly connected to the inner wall of the fixed tube (491). The surface of the abutment post (492) is slidably connected to the inner wall of the fixed tube (491), and the abutment end of the abutment post (492) is always located outside the fixed tube (491).

3. The special clamping device for tapping irregularly shaped components according to claim 2, characterized in that, The clamping mechanism (4) further includes a connecting pipe (404) detachably connected to the exhaust end of the air pump (48). The exhaust end of the connecting pipe (404) is detachably connected to the air inlet end of the abutment box (47). The exhaust end of the abutment box (47) is detachably connected to a valve (401). The exhaust end of the valve (401) is detachably connected to an exhaust pipe (402). The exhaust end of the exhaust pipe (402) is detachably connected to the air inlet end of the strip nozzle (403).

4. The special clamping device for tapping irregularly shaped components according to claim 1, characterized in that, The transmission mechanism (3) further includes a transmission rod (34) rotatably sleeved on the top of the fixed plate (8). A first gear (33) is fixedly connected to the top of the transmission rod (34). An arc-shaped rack (32) is meshed with the surface of the first gear (33). The surface of the arc-shaped rack (32) is fixedly connected to the outer ring surface of the toothed ring (31).

5. A special clamping device for tapping irregularly shaped components according to claim 4, characterized in that, The inner cavity of the mounting box (1) is provided with a mounting groove (6), and a rotating motor (7) is detachably installed in the inner cavity of the mounting groove (6). The output end of the rotating motor (7) is detachably connected to the bottom end of the transmission rod (34).

6. A special clamping device for tapping irregularly shaped components according to claim 5, characterized in that, The inner cavity of the mounting box (1) is also provided with a collection groove (5), and a circular groove (9) is provided through the top wall of the collection groove (5), and the circular groove (9) is connected to the discharge groove (10).

7. A special clamping device for tapping irregularly shaped components according to claim 6, characterized in that, The side wall of the mounting box (1) is detachably connected to a sealing plate (2) for sealing the mounting groove (6) and the circular groove (9).

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