A dual coordinate pneumatic clamping tool

Abstract

The utility model belongs to automatic processing equipment technical field especially is a kind of double coordinate pneumatic clamping tool, including base, operation bench, mounting seat, four moving plates, transmission assembly, steering adjusting assembly, four strip plates, four hollow plates, four chucks, four clamping monitoring components, four limiting components and two air cylinders;The vertical fixed mounting of the operation bench's bottom side central position is fixedly installed on the support column on base, the mounting seat is rotatably installed on support column and is horizontally arranged, four moving plates are all slidably installed on mounting seat top side and are based on support column and set as center.This utility model design is reasonable, easy to operate, and can stably carry out two-way symmetrical clamping, simultaneously can according to the need quick adjustment chuck and carry out clamping operation to workpiece from different angles, and the force value of clamping is controllable, and can stably limit chuck after clamping is completed, thereby can guarantee the stability and reliability of clamping.

Description

Technical Field

[0001] This utility model relates to the field of automated processing equipment technology, and in particular to a dual-axis pneumatic clamping fixture. Background Technology

[0002] In the field of automated machining, workpiece clamping fixtures are key equipment for ensuring machining accuracy and efficiency. They need to meet the requirements of adaptability to different workpiece specifications, clamping stability, and ease of operation. Existing pneumatic clamping fixtures mostly adopt single-axis or asymmetric clamping structures. During the clamping process, uneven force on the workpiece can easily lead to displacement, or even damage to the workpiece surface. They are difficult to adapt to the precise clamping requirements of multi-specification workpieces. At the same time, the mounting base of traditional fixtures is mostly a fixed design. When the workpiece needs to be processed in multiple positions or at multiple angles, it is necessary to frequently disassemble and reposition the workpiece. This operation is cumbersome and prone to positioning errors, significantly reducing machining efficiency. In addition, existing fixtures lack effective clamping force monitoring and buffering mechanisms. Excessive clamping force can easily cause workpiece deformation, while insufficient clamping force can easily cause the workpiece to loosen during machining vibration. Furthermore, after clamping, there is a lack of reliable limiting and fixing structures. During machining, the chuck is prone to displacement due to vibration, further affecting machining accuracy.

[0003] In summary, existing pneumatic clamping fixtures have shortcomings in terms of clamping symmetry, angle adjustment flexibility, force control accuracy, and limit stability, making it difficult to meet the high-efficiency and precise processing requirements of automated production lines. There is an urgent need for a dual-coordinate pneumatic clamping fixture that can clamp symmetrically in both directions, with adjustable angle, controllable force, and reliable limit.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings mentioned in the background section by proposing a dual-coordinate pneumatic clamping fixture.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a dual-coordinate pneumatic clamping fixture, including a base, an operating table, a mounting base, four moving plates, a transmission assembly, a steering adjustment assembly, four strip plates, four hollow plates, four chucks, four clamping monitoring assemblies, four limiting assemblies, and two cylinders.

[0007] A vertical support column is fixedly installed on the base at the center of the bottom side of the operating table. The mounting base is rotatably installed on the support column and is horizontally arranged. Four movable plates are slidably installed on the top side of the mounting base and are arranged around the support column. The transmission assembly is arranged on the support column and connected to the four movable plates. Two cylinders are fixedly installed on the mounting base and are arranged perpendicular to each other. The extension and retraction ends of the two cylinders are respectively fixedly connected to the corresponding movable plates. The air inlet and outlet of the cylinders are connected to an external pneumatic control system through air pipes. The steering adjustment assembly is arranged on the base and connected to the bottom side of the mounting base. Four strip plates are respectively fixedly installed on the side of the four movable plates that are close to each other. Four hollow plates are respectively slidably sleeved on the outside of the corresponding strip plates. Four clamps are respectively fixedly installed on the side of the four hollow plates that are close to each other. Four clamping monitoring assemblies are respectively arranged on the side of the four clamps that are far from each other and are respectively connected to the corresponding strip plates.

[0008] Four limiting components are respectively set on the bottom side of the corresponding clamps, and the operating table is provided with multiple guide grooves that are adapted to the limiting components and are radially distributed based on the support column.

[0009] Preferably, the transmission assembly includes two transmission gears and four toothed plates. The toothed plates are fixedly installed horizontally on the side of the four movable plates that are close to each other. Two transmission gears are rotatably installed on the support column. The two toothed plates arranged in parallel to each other mesh with the same transmission gear.

[0010] Preferably, the steering adjustment assembly includes a servo motor, a drive gear, and a gear plate. The servo motor is fixedly mounted on the base, and the drive gear is fixedly sleeved on the output shaft of the servo motor. A gear plate that meshes with the drive gear is fixedly mounted on the bottom side of the mounting base based on the support column as the center.

[0011] Preferably, the clamping monitoring component includes a buffer spring and a pressure sensor. The pressure sensor is fixedly installed on the side of the clamp near the hollow plate, and the buffer spring, which is coaxially fixedly connected to the pressure sensor, is fixedly installed on the side of the strip plate near the clamp.

[0012] Preferably, the limiting component includes a convex block, a return spring, an electromagnet, a hollow slider, and a limiting block. A hollow slider that slides in contact with the inner wall of the corresponding guide groove is fixedly installed on the bottom side of the chuck. A convex block extending to the bottom of the operating table is slidably installed inside the hollow slider. The same return spring is fixedly installed on the top side of the convex block and the inner wall of the top side of the hollow slider. Two limiting blocks adapted to the guide groove and two electromagnets are fixedly installed on the convex block. The bottom side of the operating table is made of magnetic metal. When the electromagnet is energized, it can attract the operating table and drive the limiting block to be inserted into the guide groove and abut against the bottom side of the operating table.

[0013] Preferably, the limiting block is convex and adapted to the width of the guide groove.

[0014] Preferably, the top side of the limiting block and the bottom side of the operating table are both roughened.

[0015] Preferably, the bottom side of the mounting base is rotatably mounted with a plurality of support wheels that are rolledly connected to the top side of the base, based on the support column as the center.

[0016] Preferably, the number of support wheels is four, and the four support wheels are distributed in a ring array based on the support column.

[0017] Preferably, four guide rods are fixedly installed on the top side of the mounting base, each parallel to the corresponding toothed plate, and the four guide rods are slidably connected to the two corresponding movable plates.

[0018] The beneficial effects of this utility model are:

[0019] This invention features a dual-coordinate pneumatic clamping structure, enabling bidirectional symmetrical clamping of workpieces. Combined with a transmission component, it ensures uniform force distribution on the workpiece during clamping, preventing offset or damage caused by unilateral clamping. Furthermore, the steering adjustment component allows for flexible adjustment of the mounting base's rotation angle according to processing requirements, enabling multi-position clamping operations without frequent workpiece movement. The buffer spring in the clamping monitoring component effectively absorbs clamping impact, while the pressure sensor monitors the clamping force in real time, automatically stopping the cylinder drive when a preset threshold is reached to prevent workpiece deformation due to excessive clamping force or loosening due to insufficient force. Additionally, the limiting component, through the cooperation of a guide groove and a hollow slider, ensures precise chuck movement. Simultaneously, the attraction between the electromagnet and the magnetic metal further fixes the chuck position after clamping, preventing displacement due to vibration during processing.

[0020] This utility model has a reasonable overall structure and is easy to operate. It can significantly improve the stability, accuracy and safety of workpiece clamping, and is suitable for the processing and fixing needs of workpieces of various specifications. It has high practical value and promotion prospects. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of a dual-coordinate pneumatic clamping fixture proposed in this utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure from another perspective;

[0024] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0025] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the mounting base, guide rod, cylinder, steering adjustment assembly, and support wheel proposed in this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the support column, transmission gear, guide groove, and grass operating platform proposed in this utility model.

[0028] Figure 7 This is a schematic diagram of the hollow plate, clamping monitoring component, limiting component, and clamping head of the present invention.

[0029] In the diagram: 1. Base; 2. Operating table; 21. Support column; 3. Mounting base; 301. Servo motor; 302. Drive gear; 303. Gear plate; 31. Moving plate; 311. Cylinder; 312. Guide rod; 32. Strip plate; 33. Hollow plate; 34. Chuck; 341. Pressure sensor; 342. Buffer spring; 35. Hollow slider; 36. Convex block; 37. Return spring; 38. Electromagnet; 39. Limit block; 4. Transmission gear; 41. Gear plate. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Reference Figure 1-7 A dual-coordinate pneumatic clamping fixture includes a base 1, an operating table 2, a mounting base 3, four movable plates 31, four strip plates 32, four hollow plates 33, four chucks 34, and two cylinders 311.

[0032] A support column 21 is fixedly installed vertically on the base 1 at the center of the bottom side of the operating table 2. The mounting base 3 is rotatably installed on the support column 21 and is set horizontally. Four moving plates 31 are slidably installed on the top side of the mounting base 3 and are set with the support column 21 as the center. Two cylinders 311 are fixedly installed on the mounting base 3 and are set perpendicular to each other. The extension and retraction ends of the two cylinders 311 are respectively fixedly connected to the corresponding moving plates 31. The air inlet and outlet of the cylinders 311 are respectively connected to the external pneumatic control system through air pipes. The extension and retraction speed and output force of the cylinders 311 can be controlled by adjusting the air pressure and flow of the pneumatic system to adapt to the clamping requirements of workpieces of different materials and sizes, and enhance the versatility and applicability of the tooling. Four strip plates 32 are respectively fixedly installed on the side of the four moving plates 31 that are close to each other. Four hollow plates 33 are respectively slidably sleeved on the outside of the corresponding strip plates 32. Four clamps 34 are respectively fixedly installed on the side of the four hollow plates 33 that are close to each other.

[0033] Four moving plates 31 are horizontally fixedly installed on the side of each other. Two transmission gears 4 are rotatably installed on the support column 21. The two toothed plates 41 arranged in parallel mesh with the same transmission gear 4. When the cylinder 311 controls the moving plate 31 to slide along the top side of the mounting base 3, it can control the moving plate 31 at the symmetrical position to keep the moving plate 31 moving in the opposite direction. This can achieve bidirectional symmetrical clamping of the workpiece, ensure that the workpiece is subjected to uniform force during the clamping process, and avoid workpiece displacement or damage due to unilateral clamping.

[0034] A servo motor 301, controlled by a servo controller and electrically connected to the control system of the device, is fixedly installed on the base 1. A drive gear 302 is fixedly sleeved on the output shaft of the servo motor 301. A gear plate 303 that meshes with the drive gear 302 is fixedly installed on the bottom side of the mounting base 3 based on the support column 21. The mounting base 3 can be controlled to rotate as needed, so as to facilitate the adjustment of the chuck 34 to clamp the workpiece at the required position without having to adjust the workpiece position to adapt to the clamping of the chuck 34.

[0035] A pressure sensor 341 is fixedly installed on the side of the chuck 34 near the hollow plate 33, and a buffer spring 342, coaxially fixedly connected to the pressure sensor 341, is fixedly installed on the side of the strip plate 32 near the chuck 34. When the chuck 34 contacts the workpiece, the elastic deformation of the buffer spring 342 absorbs the impact force during the clamping process, avoiding indentation or damage to the workpiece surface caused by rigid contact. At the same time, the pressure sensor 341 monitors the magnitude of the clamping force in real time. When the clamping force reaches the preset threshold, it can promptly feed back a signal to the control system to automatically stop the drive of the cylinder 311, preventing workpiece deformation due to excessive clamping force and also preventing loosening of the workpiece during processing due to insufficient clamping force. This achieves precise control of the clamping force and improves the safety and reliability of the tooling.

[0036] The operating table 2 has multiple guide grooves arranged radially around the support column 21. A hollow slider 35 is fixedly installed on the bottom side of the chuck 34, slidingly contacting the inner wall of the corresponding guide groove. A convex block 36 extending below the operating table 2 is slidably installed inside the hollow slider 35. The same return spring 37 is fixedly installed on the top side of the convex block 36 and the top inner wall of the hollow slider 35. Two limiting blocks 39 and two electromagnets 38, adapted to the guide grooves, are fixedly installed on the convex block 36. The bottom side of the operating table 2 is made of magnetic metal, allowing the chuck 34 to be guided in its direction of movement by the sliding contact between the hollow slider 35 and the guide groove as it moves with the moving plate 31, preventing the chuck 34 from slipping during clamping. When the pressure sensor 341 detects that the clamping force has reached a preset threshold, the electromagnet 38 is energized and generates magnetism, attracting the magnetic metal on the bottom side of the operating table 2. This causes the convex block 36 to slide upward within the hollow slider 35. At the same time, the return spring 37 is compressed, and the limit block 39 moves upward and locks into the guide groove and the bottom side of the operating table 2, further fixing the position of the chuck 34 and preventing it from loosening due to vibration or other factors during processing, thus ensuring clamping stability. When it is necessary to release the workpiece, the electromagnet 38 is de-energized, the magnetism disappears, the return spring 37 returns to its original shape, and pushes the convex block 36 downward, causing the limit block 39 to disengage from the operating table 1 and the guide groove. The chuck 34 can then be reset with the moving plate 31.

[0037] In this embodiment, in order to control the limiting block 39 to be stably engaged in the guide groove and the bottom side of the operating table 2 when the convex block 36 moves upward, and to significantly increase the friction between the limiting block 39 and the operating table 2, effectively preventing the limiting block 39 from sliding relative to the operating table 2 due to mechanical vibration or workpiece stress during the processing, further improving the positional stability of the chuck 34 in the clamping state, ensuring that the workpiece maintains accurate positioning during the dual-axis machining process, and avoiding the impact of loose clamping on machining accuracy, the limiting block 39 is convex and adapted to the width of the guide groove. The top side of the limiting block 39 and the bottom side of the operating table 2 are both roughened.

[0038] In this embodiment, in order to provide effective support for the mounting base 3 and avoid affecting its normal steering, multiple support wheels that are rotatably connected to the top side of the base 1 are mounted on the bottom side of the mounting base 3 based on the support column 21. The number of support wheels is four, and the four support wheels are distributed in a circular array based on the support column 21. This makes the force on the mounting base 3 more uniform during rotation, reduces wear or jamming caused by excessive load on a single support wheel, further improves the stability and smoothness of the mounting base 3 during steering adjustment, and extends the overall service life of the tooling.

[0039] In this embodiment, in order to provide a stable guiding effect for the sliding of the moving plate 31, prevent the moving plate 31 from tilting or deviating due to uneven force during the sliding process, and ensure that the moving plate 31 always moves smoothly along the preset trajectory, thereby further improving the positional accuracy and stability of the chuck 34 when clamping the workpiece, four guide rods 312 are fixedly installed on the top side of the mounting base 3, which are parallel to the corresponding toothed plates 41. The four guide rods 312 are slidably connected to the two corresponding moving plates 31. The guide rods 312 and the moving plates 31 adopt a clearance fit design, and wear-resistant lubricant is applied to the contact surface, which can effectively reduce the frictional resistance between the two, reduce component wear, extend service life, and ensure the long-term stable operation of the tooling.

[0040] The circuits, electronic components, and module mechanisms involved all employ existing technologies, which can be fully implemented by those skilled in the art, and need no further explanation. The content protected by this application does not involve any improvement to the software, circuits, or methods.

[0041] Working principle: In use, first connect the power supply and place the workpiece to be processed in the center of the operating table 2. Then, start the pneumatic device through the external control system, so that the two cylinders 311 drive the corresponding moving plates 31 to slide along the top side of the mounting base 3. When the moving plate 31 moves, the toothed plate 41 on one side meshes with the transmission gear 4 on the support column 21, thereby driving the symmetrically positioned moving plates 31 to move synchronously in opposite directions. This causes the four moving plates 31 to drive the strip plate 32, hollow plate 33 and chuck 34 to move closer to the workpiece. When the chuck 34 contacts the workpiece... During the workpiece process, the hollow plate 33 slides along the strip plate 32 and compresses the buffer spring 342, while the pressure sensor 341 monitors the clamping force in real time. When the clamping force reaches the preset threshold, the pressure sensor 341 sends a signal to the control system, the cylinder 311 stops driving, and at the same time the electromagnet 38 is energized to generate magnetism, which attracts the magnetic metal on the bottom side of the operating table 2, causing the convex block 36 to move upward in the hollow slider 35. At the same time, the reset spring 37 is compressed, and the limit block 39 is inserted between the guide groove and the bottom side of the operating table 2, thus completing the position fixation of the chuck 34.

[0042] If the clamping angle needs to be adjusted, the servo motor 301 can drive the drive gear 302 to rotate, causing the gear plate 303 and the mounting base 3 to rotate around the support column 21 until the chuck 34 reaches the desired position. After the processing is completed, the control system controls the electromagnet 38 to be de-energized, the reset spring 37 pushes the convex block 36 to move down, the limit block 39 disengages from the limit, and then controls the cylinder 311 to retract, thereby driving the moving plate 31 to reset and causing the chuck 34 to release the workpiece, and then the processed workpiece can be taken out.

[0043] The foregoing has provided a detailed description of the dual-coordinate pneumatic clamping fixture provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A dual-axis pneumatic clamping fixture, characterized in that, It includes a base (1), an operating table (2), a mounting base (3), four movable plates (31), a transmission assembly, a steering adjustment assembly, four strip plates (32), four hollow plates (33), four chucks (34), four clamping monitoring assemblies, four limit assemblies, and two cylinders (311); A vertical support column (21) is fixedly installed at the center of the bottom side of the operating table (2), and the support column (21) is fixedly installed on the base (1). The mounting seat (3) is rotatably installed on the support column (21) and is horizontally arranged. Four moving plates (31) are slidably installed on the top side of the mounting seat (3) and are arranged with the support column (21) as the center. The transmission assembly is arranged on the support column (21) and connected to the four moving plates (31). Two cylinders (311) are fixedly installed on the mounting seat (3) and are arranged perpendicular to each other. The extension and retraction ends of the two cylinders (311) are respectively connected to the corresponding moving plates (31). The cylinder (311) is fixedly connected to the external pneumatic control system through an air pipe. The steering adjustment component is set on the base (1) and connected to the bottom side of the mounting seat (3). The four strip plates (32) are fixedly installed on the side of the four moving plates (31) that are close to each other. The four hollow plates (33) are slidably sleeved on the outside of the corresponding strip plates (32). The four clamps (34) are fixedly installed on the side of the four hollow plates (33) that are close to each other. The four clamping monitoring components are set on the side of the four clamps (34) that are far away from each other and are connected to the corresponding strip plates (32). Four limiting components are respectively set on the bottom side of the corresponding clamp (34), and the operating table (2) is provided with multiple guide grooves that are adapted to the limiting components and are radially distributed based on the support column (21).

2. The dual-axis pneumatic clamping fixture according to claim 1, characterized in that: The transmission assembly includes two transmission gears (4) and four toothed plates (41). The toothed plates (41) are fixedly installed horizontally on the side of the four moving plates (31) that are close to each other. Two transmission gears (4) are rotatably installed on the support column (21). The two toothed plates (41) arranged in parallel with each other mesh with the same transmission gear (4).

3. The dual-axis pneumatic clamping fixture according to claim 1, characterized in that: The steering adjustment assembly includes a servo motor (301), a drive gear (302), and a gear disc (303). The servo motor (301) is fixedly mounted on the base (1), and the drive gear (302) is fixedly sleeved on the output shaft of the servo motor (301). The gear disc (303) that meshes with the drive gear (302) is fixedly mounted on the bottom side of the mounting base (3) based on the support column (21) as the center.

4. The dual-axis pneumatic clamping fixture according to claim 1, characterized in that: The clamping monitoring assembly includes a buffer spring (342) and a pressure sensor (341). The pressure sensor (341) is fixedly installed on the side of the clamp (34) near the hollow plate (33), and the buffer spring (342) is fixedly installed on the side of the strip plate (32) near the clamp (34) and is coaxially fixedly connected to the pressure sensor (341).

5. The dual-coordinate pneumatic clamping fixture according to claim 1, characterized in that: The limiting component includes a convex block (36), a return spring (37), an electromagnet (38), a hollow slider (35), and a limiting block (39). A hollow slider (35) that slides in contact with the inner wall of the corresponding guide groove is fixedly installed on the bottom side of the chuck (34). A convex block (36) extending to the bottom of the operating table (2) is slidably installed inside the hollow slider (35). The same return spring (37) is fixedly installed on the top side of the convex block (36) and the top side inner wall of the hollow slider (35). Two limiting blocks (39) that are adapted to the guide groove and two electromagnets (38) are fixedly installed on the convex block (36). The bottom side of the operating table (2) is made of magnetic metal. When the electromagnet (38) is energized, it can attract the operating table (2) and drive the limiting block (39) to be inserted into the guide groove and abut against the bottom side of the operating table (2).

6. A dual-axis pneumatic clamping fixture according to claim 5, characterized in that: The limiting block (39) is convex and is adapted to the width of the guide groove.

7. A dual-axis pneumatic clamping fixture according to claim 6, characterized in that: The top side of the limiting block (39) and the bottom side of the operating table (2) are both roughened.

8. A dual-axis pneumatic clamping fixture according to claim 1, characterized in that: The bottom side of the mounting base (3) is rotatably mounted with multiple support wheels that are rolledly connected to the top side of the base (1) based on the support column (21).

9. A dual-axis pneumatic clamping fixture according to claim 8, characterized in that: The number of support wheels is four, and the four support wheels are distributed in a ring array based on the support column (21).

10. A dual-axis pneumatic clamping fixture according to claim 2, characterized in that: The mounting base (3) has four guide rods (312) fixedly installed on its top side, each parallel to the corresponding toothed plate (41). The four guide rods (312) are slidably connected to the two corresponding moving plates (31).

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