Pneumatic chuck

Abstract

The invention belongs to the technical field of pneumatic chucks, and discloses a pneumatic chuck which comprises a clamping jaw, an adjusting assembly, a transmission assembly and an air inlet and outlet system. The air inlet and outlet system comprises two air inlets and two air outlets which are marked as the first air inlet, the second air inlet, the first air outlet and the second air outlet respectively, the air inlet area of the air inlets is larger than the air outlet area of the air outlets, and the air inlets and the air outlets are provided with air cavities. The transmission assembly is movably arranged between a clamping cavity and a loosening cavity in the air cavity, and the air inlet and outlet system is used for driving the transmission assembly to move between the clamping cavity and the loosening cavity through air pressure difference and airflow formed when air is input from the air inlet and output from the air outlet at the same time. The adjusting assembly is driven to adjust clamping and loosening of the clamping jaws, and meanwhile the pneumatic chuck is cooled. By means of the pneumatic chuck, quantized gas can be input to clamp a workpiece, meanwhile, heat dissipation is conducted, and the clamping efficiency of the pneumatic chuck is improved.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic chucks, and in particular, to a pneumatic chuck. Background Art

[0002] In recent years, with the continuous development and maturity of industrial automation processing technology, the market's requirements for machining efficiency and precision have been increasing. As one of the most commonly used equipment in machining, the machining efficiency and precision of lathes directly affect the overall efficiency and quality of the entire machining process.

[0003] Traditional lathes require workers to use mechanical chuck wrenches to load and unload workpieces. This operation method not only consumes a lot of workers' physical strength and reduces production efficiency, but also easily creates safety hazards during operation and is not practical. When using traditional mechanical chucks to clamp workpieces, the control of clamping force becomes a key issue. If the clamping force is too large, the workpiece will be deformed during processing, seriously affecting the processing accuracy; conversely, if the clamping force is insufficient, the workpiece may slip during processing or even fly out of the lathe, causing serious safety accidents. This clamping force control mainly depends on the worker's experience and lacks precise quantitative standards, making it difficult for novice operators to quickly master it, increasing training costs and operating risks.

[0004] Furthermore, during lathe processing, the temperature of the lathe spindle disposed in the mechanical chuck increases with time, causing the lathe spindle to deform more and more, resulting in a decrease in processing accuracy.

[0005] Therefore, in order to solve the technical problems that the existing mechanical chucks need to rely on workers' experience when clamping workpieces and lack quantitative standards, and the temperature of the lathe spindle increases with the processing time, resulting in a decrease in processing accuracy, a pneumatic chuck is urgently needed. Summary of the invention

[0006] The purpose of the present application is to provide a pneumatic chuck, which drives a transmission component to move between a clamping chamber and a releasing chamber through an air inlet and outlet system in which the air inlet is larger than the air outlet, inputs gas from the air inlet and outputs gas from the air outlet at the same time, builds pressure and forms airflow in the clamping chamber or the releasing chamber, so as to drive the transmission component to move between the clamping chamber and the releasing chamber, drive the adjusting component to adjust the clamping and releasing of the clamping jaws and dissipate heat for the pneumatic chuck at the same time, solves the problem that the existing mechanical chucks need to rely on the experience of workers when clamping workpieces and lack quantitative standards, and the temperature of the lathe spindle increases with the processing time, resulting in a decrease in processing accuracy. The invention can input a quantitative amount of gas to clamp the workpiece and evacuate the excess heat energy inside the pneumatic chuck at the same time, thereby improving the clamping efficiency of the pneumatic chuck.

[0007] In a first aspect, the present application provides a pneumatic chuck, including a clamping jaw, an adjustment assembly, a transmission assembly, and an air inlet and outlet system; The transmission assembly is transmission-connected to the claw via the adjustment assembly; The air inlet and outlet system comprises an air inlet and an air outlet, wherein two air inlets and two air outlets are provided respectively, which are respectively recorded as a first air inlet, a second air inlet, a first air outlet and a second air outlet; an air inlet area of ​​the air inlet is larger than an air outlet area of ​​the air outlet; an air cavity is provided between the air inlet and the air outlet, the transmission component is movably provided in the air cavity, and the transmission component divides the air cavity into a clamping cavity and a relaxing cavity, the first air inlet and the first air outlet are connected to the clamping cavity, and the second air inlet and the second air outlet are connected to the relaxing cavity; The air inlet and outlet system is used to input gas from the air inlet and output gas from the air outlet at the same time, so as to establish pressure and form airflow in the clamping chamber or the release chamber, so as to drive the transmission component to move between the clamping chamber and the release chamber, so as to drive the adjustment component to adjust the clamping and release of the claws while realizing heat dissipation of the pneumatic chuck.

[0008] The pneumatic chuck provided by the present application can clamp a workpiece. Through an air inlet and outlet system in which the air inlet is larger than the air outlet, the transmission component is driven to move between the clamping chamber and the releasing chamber. Gas is input from the air inlet and output from the air outlet at the same time, pressure is established and airflow is formed in the clamping chamber or the releasing chamber to drive the transmission component to move between the clamping chamber and the releasing chamber, so as to drive the adjustment component to adjust the clamping and releasing of the clamping claws while dissipating the heat of the pneumatic chuck, thereby solving the problem that the existing mechanical chucks need to rely on the experience of workers when clamping workpieces and lack quantitative standards, and the temperature of the lathe spindle increases with the processing time, resulting in a decrease in processing accuracy. Quantified gas can be input to clamp the workpiece while evacuating excess heat energy inside the pneumatic chuck, thereby improving the clamping efficiency of the pneumatic chuck.

[0009] Optionally, the pneumatic chuck further comprises a base; The base is used to fix the positions of the clamping claw, the adjusting assembly, the transmission assembly and the air inlet and outlet system.

[0010] Optionally, the claw comprises a claw body and a claw guide rail; the claw guide rail is fixed on the base, and the claw body is movably arranged on the claw guide rail; The clamping claw body is used for clamping a workpiece; The claw guide rail is used to guide the claw body.

[0011] Optionally, the transmission assembly includes a fixedly connected connecting shaft and a dividing block; The connecting shaft is connected to the adjusting assembly; The dividing block is movably arranged between the air cavities and is used to divide the air cavities into the clamping cavity and the relaxing cavity.

[0012] The pneumatic chuck provided in the present application can clamp a workpiece. The clamping chamber and the releasing chamber are divided by a dividing block. The clamping chamber or the releasing chamber is input with air pressure to clamp and release the jaws, thereby improving the operating efficiency of the pneumatic chuck.

[0013] Optionally, a sealing ring is provided at the position where the connecting shaft is connected to the base; The sealing ring is used to improve the sealing performance of the pneumatic chuck.

[0014] Optionally, the adjustment assembly includes an adjustment cavity, a lever and a slider; one end of the lever is connected to the slider; the other end of the lever is connected to the connecting shaft; The regulating cavity is used to limit the range of motion of the lever; The lever is used to control the movement of the slider; The slider is arranged in the claw guide rail, the slider is slidably connected to the claw guide rail, and the slider is fixedly connected to the claw body. The slider is used to drive the claw body to move in the claw guide rail to achieve the clamping and loosening of the claw.

[0015] The pneumatic chuck provided in the present application can clamp the workpiece by limiting the movement of the lever in the adjusting chamber to control the movement of the slider, so that the slider drives the jaw body to move in the jaw guide rail, thereby achieving the clamping and loosening of the jaw. The clamping and loosening of the jaw is controlled by the adjusting component, which is beneficial to improving the operating efficiency of the pneumatic chuck.

[0016] Optionally, a lever latch is provided in the lever; The lever latch is used to fix the position of the lever, and the lever can swing around the lever latch.

[0017] Optionally, the lever includes two parts, a short rod and a long rod, which are fixedly connected, and one end of the short rod and one end of the long rod are respectively marked as the short rod end and the long rod end; the short rod end of the lever is connected to the slider; and the long rod end of the lever is connected to the connecting shaft.

[0018] Optionally, the outer peripheral surface of the connecting shaft is provided with a groove, the lever is connected to the connecting shaft via the groove, and the long rod end of the lever is arranged in the groove; The groove is used to drive the lever to move when the connecting shaft moves.

[0019] Optionally, a limiting module is provided on the outer circumference of the connecting shaft; the limiting module comprises a wedge-shaped inserting block, a lifting sleeve, a lifting connecting block and a lifting upper connecting shaft; the long rod end of the lever is provided in the limiting module, and the lever is connected to the connecting shaft through the limiting module; The wedge-shaped clamping block, the lifting sleeve, the lifting connecting block and the lifting upper side connecting shaft are used to cooperate with each other to drive the lever to move when the connecting shaft moves.

[0020] Beneficial effect: The pneumatic chuck provided by the present application drives the transmission component to move between the clamping chamber and the releasing chamber through an air inlet and outlet system in which the air inlet is larger than the air outlet, inputs gas from the air inlet and outputs gas from the air outlet at the same time, builds pressure and forms airflow in the clamping chamber or the releasing chamber, so as to drive the transmission component to move between the clamping chamber and the releasing chamber, so as to drive the adjusting component to adjust the clamping and releasing of the clamping jaws while dissipating the heat of the pneumatic chuck, thereby solving the problem that the existing mechanical chucks need to rely on the workers' experience when clamping the workpiece and lack quantitative standards, and the temperature of the lathe spindle increases with the processing time, resulting in a decrease in processing accuracy. The pneumatic chuck can input a quantitative amount of gas to clamp the workpiece while evacuating the excess heat energy inside the pneumatic chuck, thereby improving the clamping efficiency of the pneumatic chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a pneumatic chuck provided in an embodiment of the present application.

[0022] Figure 2 A schematic diagram of the external structure of the pneumatic chuck provided in an embodiment of the present application.

[0023] Explanation of reference numerals: 1. Clamping jaw; 2. Adjusting assembly; 3. Transmission assembly; 4. Air inlet and outlet system; 5. First air inlet; 6. Second air inlet; 7. First air outlet; 8. Second air outlet; 9. Clamping chamber; 10. Release chamber; 11. Base; 12. Clamping jaw body; 13. Clamping jaw guide rail; 14. Connecting shaft; 15. Splitting block; 16. Sealing ring; 17. Adjusting chamber; 18. Lever; 19. Slider; 20. Lever latch; 21. Limiting module; 22. Wedge-shaped embedding block; 23. Lifting sleeve; 24. Lifting connecting block; 25. Lifting upper side connecting shaft. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] Please refer to Figure 1 and Figure 2 , Figure 1 It is a pneumatic chuck in some embodiments of the present application, used for clamping a workpiece, comprising a clamping jaw 1, an adjustment assembly 2, a transmission assembly 3 and an air inlet and outlet system 4; The transmission component 3 is transmission-connected to the claw 1 through the adjustment component 2; The air inlet and outlet system 4 includes an air inlet and an air outlet, and two air inlets and two air outlets are provided, which are respectively recorded as a first air inlet 5, a second air inlet 6, a first air outlet 7, and a second air outlet 8; the air inlet area of ​​the air inlet is larger than the air outlet area of ​​the air outlet; an air cavity is provided between the air inlet and the air outlet, the transmission component 3 is movably provided in the air cavity, and the transmission component divides the air cavity into a clamping cavity 9 and a relaxing cavity 10, the first air inlet 5 and the first air outlet 7 are connected to the clamping cavity 9, and the second air inlet 6 and the second air outlet 8 are connected to the relaxing cavity 10; The air inlet and outlet system 4 is used to input gas from the air inlet and output gas from the air outlet at the same time, so as to build up pressure and form airflow in the clamping chamber 9 or the release chamber 10, so as to drive the transmission component 3 to move between the clamping chamber 9 and the release chamber 10, so as to drive the adjustment component 2 to adjust the clamping and release of the claw 1 while realizing the heat dissipation of the pneumatic chuck.

[0027] In specific applications, the design of the air inlet and the air outlet ensures efficient airflow control of the pneumatic chuck in different radial directions. The air inlet area of ​​the air inlet is larger than the air outlet area of ​​the air outlet. When gas is input from the air inlet, the gas will flow out from the air outlet to form an airflow for heat dissipation in the air cavity. However, since the air outlet is relatively small, the gas will encounter greater resistance when flowing out of the air outlet, thereby building up pressure in the air cavity. This pressure can drive the transmission component 3 to achieve clamping and loosening of the jaws 1. By controlling the flow rate of the input gas, the air pressure in the air cavity can be accurately controlled, thereby accurately controlling the clamping force of the jaws 1. At the same time, the heat dissipation airflow flowing out of the air outlet will take away the heat inside the pneumatic chuck, preventing the lathe spindle (the transmission shaft 14 described below) from being too high in temperature, thereby achieving heat dissipation of the pneumatic chuck. The setting of the air cavity enables the transmission component 3 to move freely in the air cavity, thereby accurately dividing the air cavity into a clamping cavity 9 and a loosening cavity 10. The movement of the transmission assembly 3 is driven by the air inlet and outlet system 4 , which ensures the rapid movement of the transmission assembly 3 between the clamping chamber 9 and the release chamber 10 , thereby improving the efficiency and accuracy of the adjustment of the claw 1 .

[0028] When clamping the workpiece, high-pressure gas is input into the first air inlet 5, and a pressure difference with the external atmosphere is formed in the clamping chamber 9 through the first air inlet 5 and the first air outlet 7. The transmission component 3 is driven to move to expand the space of the clamping chamber 9, so as to control the adjustment component 2 to adjust the clamping distance of the claw 1 so that the claw 1 is clamped. After clamping, the pressure in the clamping chamber 9 can be controlled by adjusting the gas input flow rate, thereby realizing precise adjustment of the clamping force of the claw 1.

[0029] When releasing the workpiece, high-pressure gas is input into the second air inlet 6, and a pressure difference with the external atmosphere is formed in the release chamber 10 through the second air inlet 6 and the second air outlet 8, driving the transmission component 3 to move to expand the space of the release chamber 10, so as to control the adjustment component 2 to adjust the clamping distance of the claw 1 and release the claw 1.

[0030] In some optional embodiments, an infrared temperature sensor may be provided outside the pneumatic chuck, the temperature measuring point of the infrared temperature sensor may be aligned with the pneumatic chuck, and the host computer may be connected via a data acquisition card. After the host computer compares the real-time temperature acquired by the infrared temperature sensor with the preset safe working temperature, the PID control program may be called to control the temperature of the input gas according to the temperature difference, and finally the adjusted temperature difference may be within the preset safe temperature difference threshold value to ensure the stable operation of the lathe. The preset safe working temperature and the preset safe temperature difference threshold value may be set according to actual needs.

[0031] The pneumatic chuck drives a transmission component to move between a clamping chamber and a releasing chamber through an air inlet and outlet system in which an air inlet is larger than an air outlet. Gas is input from the air inlet and output from the air outlet at the same time, so as to build up pressure and form an airflow in the clamping chamber or the releasing chamber, so as to drive the transmission component to move between the clamping chamber and the releasing chamber, so as to drive the adjusting component to adjust the clamping and releasing of the clamping claws and dissipate heat from the pneumatic chuck at the same time. This solves the problem that the existing mechanical chucks need to rely on the experience of workers when clamping workpieces and lack quantitative standards, and the temperature of the lathe spindle increases with the processing time, resulting in a decrease in processing accuracy. The pneumatic chuck can input quantitative gas to clamp the workpiece and evacuate the excess heat energy inside the pneumatic chuck at the same time, thereby improving the clamping efficiency of the pneumatic chuck.

[0032] Specifically, the pneumatic chuck further includes a base 11; The base 11 is used to fix the positions of the claw 1 , the adjustment assembly 2 , the transmission assembly 3 and the air inlet and outlet system 4 .

[0033] In specific applications, the base 11 can be made of a variety of materials, such as metal or high-strength plastic, to ensure sufficient strength and durability. The design of the base 11 can include a plurality of fixing holes and slots for accurately fixing the claw 1, the adjustment assembly 2, the transmission assembly 3 and the air inlet and outlet system 4 at their designated positions.

[0034] Furthermore, the base 11 may adopt a modular design to facilitate disassembly and replacement, thereby improving the efficiency of maintenance and repair.

[0035] Thus, the design and use of the base 11 solves the problem of movement or misalignment of the components of the pneumatic chuck during operation, ensuring the normal operation and efficient work of the pneumatic chuck. The fixing effect of the base 11 can ensure the stability and accuracy of the components of the pneumatic chuck during operation, thereby improving the overall performance and operating efficiency of the pneumatic chuck.

[0036] Specifically, the claw 1 includes a claw body 12 and a claw guide rail 13; the claw guide rail 13 is fixed on the base 11, and the claw body 12 is movably arranged on the claw guide rail 13; The jaw body 12 is used to clamp the workpiece; The claw guide rail 13 is used to guide the claw body 12 .

[0037] In a specific application, the design of the claw body 12 and the claw guide rail 13 enables the claw 1 to move along the fixed guide rail when clamping and releasing, thereby ensuring the position stability and accuracy of the claw 1 during operation. The claw guide rail 13 is fixed on the base 11, providing a stable moving path for the claw body 12, and the claw body 12 realizes the clamping and releasing functions by moving on the guide rail.

[0038] Specifically, the transmission assembly 3 includes a fixedly connected connecting shaft 14 and a dividing block 15; The connecting shaft 14 is used to drive the adjustment component 2; The dividing block 15 is movably disposed between the air cavities and is used to divide the air cavities into a clamping cavity 9 and a relaxing cavity 10 .

[0039] In a specific application, the adjustment component 2 is connected to the outer surface of the connecting shaft 14, and the adjustment component 2 can be driven to work by the connecting shaft 14. The design of the dividing block 15 enables its movement in the air cavity to effectively divide the air cavity, and divides the air cavity part between the first air inlet 5 and the first air outlet 7 into the clamping cavity 9, and divides the air cavity part between the second air inlet 6 and the second air outlet 8 into the relaxation cavity 10, so that the clamping and relaxation functions of the claw 1 are realized by the movement of the dividing block 15 between the clamping cavity 9 and the relaxation cavity 10. The dividing block 15 is controlled by the air inlet and outlet system 4 to achieve precise movement and positioning. In addition, the surface of the dividing block 15 can be designed with a specific shape or texture to increase its friction with the inner wall of the air cavity, thereby improving the stability and accuracy of its movement.

[0040] Among them, the dividing block 15 can be connected to the connecting shaft 14 by bolts, welding or other fixing methods, or the dividing block 15 and the connecting shaft 14 are the same as a whole (that is, the raw material corresponding to the connecting shaft 14 is used as the main body, and the dividing block 15 is manufactured at the corresponding position while manufacturing the connecting shaft 14, that is, the dividing block 15 and the connecting shaft 14 are obtained by integrated processing) to ensure that it will not move or loosen during use.

[0041] Specifically, a sealing ring 16 is provided at the position where the connecting shaft 14 is connected to the base 11; The sealing ring 16 is used to seal the gap between the connecting shaft 14 and the base 11 .

[0042] In a specific application, a plurality of connection positions are provided between the connecting shaft 14 and the base 11, and a sealing ring 16 is provided at each of the plurality of connection positions to seal the gap between the connecting shaft 14 and the base 11, thereby ensuring the sealing of the pneumatic chuck, that is, ensuring the sealing of the air cavity. The sealing ring 16 can be made of a variety of materials and structural designs to achieve its sealing function. For example, the sealing ring 16 can be made of an elastic material, such as rubber or silicone, to ensure a tight fit between the connecting shaft 14 and the base 11.

[0043] Further, the shape of the sealing ring 16 can be annular, or other geometric shapes that can adapt to the connection part between the connecting shaft and the base. In addition, the sealing ring 16 can be installed by pressing, bonding or other fixing methods to ensure that it will not shift or fall off during use.

[0044] By providing a sealing ring 16 at the position where the connecting shaft 14 is connected to the base 11, the sealing ring 16 can be added at the key connection, which effectively improves the sealing of the pneumatic chuck. The function of the sealing ring 16 is to prevent gas leakage and ensure the efficient operation of the pneumatic system, thereby improving the overall performance and service life of the pneumatic chuck.

[0045] Specifically, the adjustment assembly 2 includes an adjustment chamber 17, a lever 18 and a slider 19; one end of the lever 18 is connected to the slider 19; the other end of the lever 18 is connected to the connecting shaft 14; The regulating chamber 17 is used to limit the range of motion of the lever 18; The lever 18 is used to control the movement of the slider 19; The slider 19 is disposed in the claw guide rail 13 , the slider 19 is slidably connected to the claw guide rail 13 , and the slider 19 is fixedly connected to the claw body 12 , and the slider 19 is used to drive the claw body 12 to move in the claw guide rail 13 to achieve the clamping and loosening of the claw 1 .

[0046] In specific applications, the design of the adjustment chamber 17 can ensure that the lever 18 is effectively operated at a specific position, thereby achieving precise control of the movement of the slider 19. The connection between the lever 18 and the slider 19 enables the lever 18 to directly control the slider 19, thereby driving the claw body 12 to move in the claw guide 13. The other end of the lever 18 is connected to the connecting shaft 14. When the connecting shaft 14 moves, it will drive the lever 18 to rotate, thereby driving the slider 19 to move. The sliding connection between the slider 19 and the claw guide 13 ensures the stability and accuracy of the claw body 12 during the movement.

[0047] Specifically, a lever latch 20 is provided in the lever 18; The lever latch 20 is used to fix the position of the lever, and the lever 18 can swing around the lever latch 20 .

[0048] In a specific application, the lever latch 20 is used to fix the position of the lever 18. The lever latch 20 can achieve the fixing function in a variety of ways. For example, the lever latch 20 can be a mechanical locking device that locks the position of the lever by rotating or pressing, or the lever latch can be designed as a spring-loaded pin. The lever latch 20 fixes the lever 18 at a specific position so that the lever 18 rotates around the lever latch 20. When the connecting shaft 14 moves, the lever 18 rotates around the setting position of the lever latch 20 to control the movement of the slider 19, thereby driving the claw body 12 to move in the claw guide rail 13. The setting position of the lever latch 20 can be set according to actual conditions.

[0049] The arrangement of the lever latch 20 ensures the stability of the lever during operation and prevents the lever 18 from unnecessary movement or offset during operation. By fixing the position of the lever 18, the accuracy and reliability of the adjustment assembly 2 can be improved, thereby ensuring the accurate operation of the jaw 1 during the clamping and loosening process.

[0050] Specifically, the lever 18 includes a short rod and a long rod; the short rod end of the lever 18 (the end where the short rod is located) is connected to the slider 19 ; the long rod end of the lever 18 (the end where the long rod is located) is connected to the connecting shaft 14 .

[0051] In a specific application, the lever 18 is divided into a short rod and a long rod, wherein a certain angle (such as Figure 1 As shown, the lever 18 is in a "7" shape, with an acute angle between the short rod and the long rod, so as to reduce the space of the adjustment chamber 17. The short rod end of the lever 18 (the end where the short rod is located) is connected to the slider 19; the long rod end of the lever 18 (the end where the long rod is located) is connected to the connecting shaft 14.

[0052] Specifically, a groove is provided on the outer peripheral surface of the connecting shaft 14, and the lever 18 is connected to the connecting shaft 14 through the groove, and the long rod end of the lever 18 is arranged in the groove; The groove is used to drive the lever 18 to move when the connecting shaft 14 moves.

[0053] In a specific application, the design of the groove provides a fixed connection point for the lever 18, while allowing the lever 18 to move accordingly when the connecting shaft 14 moves. This design ensures that the connection between the connecting shaft 14 and the lever 18 is both stable and flexible, so that the lever 18 can be effectively driven to move when the connecting shaft 14 moves. The groove can be of various shapes and sizes to meet different application requirements. For example, the groove can be round, square or other geometric shapes, and its depth and width can also be adjusted according to actual needs. The material selection of the groove is also very important. High-strength, wear-resistant materials are usually used to ensure its stability and durability in long-term use.

[0054] In some optional embodiments, the connection between the connecting shaft 14 and the lever 18 can be, but is not limited to, a snap connection, a hinge connection, or the like. For example, a snap is provided on the outer circumferential surface of the connecting shaft 14, and a mounting hole is provided on the lever 18 to cooperate with each other to form a snap connection.

[0055] Specifically, a limiting module 21 is disposed on the outer circumference of the connecting shaft 14; the limiting module 21 includes a wedge-shaped inserting block 22, a lifting sleeve 23, a lifting connecting block 24 and a lifting upper connecting shaft 25; the long rod end of the lever 18 is disposed in the limiting module 21, and the lever 18 is connected to the connecting shaft 14 through the limiting module 21; The wedge-shaped locking block 22, the lifting sleeve 23, the lifting connecting block 24 and the lifting upper side connecting shaft 25 are used to cooperate with each other to drive the lever 18 to move when the connecting shaft 14 moves.

[0056] In specific applications, the design of the limit module 21 is to ensure that the lever 18 can be movably connected to the connecting shaft 14. The limit module 21 can be set in the groove on the outer peripheral surface of the connecting shaft 14, the wedge-shaped embedded block 22 is fixedly connected to the connecting shaft 14, and the wedge-shaped embedded block 22 is used to fix the position of the limit module 21 on the connecting shaft 14. The lifting sleeve 23 is in contact with the wedge-shaped embedded block 22, and the lifting sleeve 23 is used to limit the range of motion of the long rod end of the lever 18 in the limit module 21. The long rod end of the lever 18 is set in the lifting connecting block 24 to fix the position of the lever 18 in the limit module 21, so that when the connecting shaft 14 moves, the lever 18 can be driven to move through the limit module 21. The lifting upper side connecting shaft 25 is fixedly connected to the connecting shaft 14 by means of threaded connection, etc., and the lifting upper side connecting shaft 25 is used to cooperate with the wedge-shaped embedded block 22 to fix the position of the limit module 21 on the connecting shaft 14.

[0057] Through the cooperation of the wedge-shaped clamping block 22, the lifting sleeve 23, the lifting connecting block 24 and the lifting upper side connecting shaft 25, the long rod end of the lever 18 can be fixed in the limit module 21, and is movably connected with the connecting shaft 14 through the limit module 21. When the connecting shaft 14 moves, these components can work together to drive the lever 18 to move, thereby solving the technical problem of the movably connected connection between the connecting shaft 14 and the lever 18.

[0058] The wedge-shaped locking block 22 can be designed to have a certain slope so that the long rod end of the lever 18 can be smoothly embedded and fixed. The lifting sleeve 23 and the lifting connecting block 24 can be designed as adjustable structures so that the position of the lever 18 can be adjusted according to actual needs. The lifting upper side connecting shaft 25 can be designed to be a structure that closely matches the connecting shaft 14 to ensure that the connecting shaft 14 can accurately drive the lever 18 to move when it moves.

[0059] As can be seen from the above, the pneumatic chuck drives the transmission component to move between the clamping chamber and the releasing chamber through an air inlet and outlet system in which the air inlet is larger than the air outlet, inputs gas from the air inlet and outputs gas from the air outlet at the same time, builds pressure and forms airflow in the clamping chamber or the releasing chamber to drive the transmission component to move between the clamping chamber and the releasing chamber, so as to drive the adjusting component to adjust the clamping and releasing of the clamping claws while dissipating the heat of the pneumatic chuck, thereby solving the problem that the existing mechanical chucks need to rely on the workers' experience when clamping the workpiece and lack quantitative standards, and the temperature of the lathe spindle increases with the processing time, resulting in a decrease in processing accuracy. The pneumatic chuck can input a quantitative amount of gas to clamp the workpiece while evacuating the excess heat energy inside the pneumatic chuck, thereby improving the clamping efficiency of the pneumatic chuck.

[0060] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0061] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, and may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0062] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0063] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0064] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pneumatic chuck, characterized in that: It comprises a clamping claw (1), an adjustment component (2), a transmission component (3) and an air inlet and outlet system (4); The transmission component (3) is in transmission connection with the claw (1) via the adjustment component (2); The air inlet and outlet system (4) comprises an air inlet and an air outlet, wherein two air inlets and two air outlets are provided respectively, which are respectively denoted as a first air inlet (5), a second air inlet (6), a first air outlet (7) and a second air outlet (8); an air inlet area of ​​the air inlet is larger than an air outlet area of ​​the air outlet; an air cavity is provided between the air inlet and the air outlet, the transmission component (3) is movably provided in the air cavity, and the transmission component divides the air cavity into a clamping cavity (9) and a relaxing cavity (10); the first air inlet (5) and the first air outlet (7) are connected to the clamping cavity (9), and the second air inlet (6) and the second air outlet (8) are connected to the relaxing cavity (10); The air inlet and outlet system (4) is used to input gas from the air inlet and output gas from the air outlet at the same time, thereby building up pressure and forming airflow in the clamping chamber (9) or the release chamber (10), so as to drive the transmission component (3) to move between the clamping chamber (9) and the release chamber (10), so as to drive the adjustment component (2) to adjust the clamping and release of the claw (1) while achieving heat dissipation for the pneumatic chuck.

2. The pneumatic chuck according to claim 1, characterized in that: The pneumatic chuck also includes a base (11); The base (11) is used to fix the positions of the clamping claw (1), the adjustment assembly (2), the transmission assembly (3) and the air inlet and outlet system (4).

3. The pneumatic chuck according to claim 2, characterized in that: The claw (1) comprises a claw body (12) and a claw guide rail (13); the claw guide rail (13) is fixed on the base (11), and the claw body (12) is movably arranged on the claw guide rail (13); The clamping claw body (12) is used for clamping a workpiece; The clamping claw guide rail (13) is used to guide the clamping claw body (12).

4. The pneumatic chuck according to claim 3, characterized in that: The transmission assembly (3) comprises a connecting shaft (14) and a dividing block (15) which are fixedly connected; The connecting shaft (14) is connected to the adjusting component (2); The dividing block (15) is movably arranged between the air cavities, and is used to divide the air cavities into the clamping cavity (9) and the relaxing cavity (10).

5. The pneumatic chuck according to claim 4, characterized in that: A sealing ring (16) is provided at the position where the connecting shaft (14) is connected to the base (11); The sealing ring (16) is used to seal the gap between the connecting shaft (14) and the base (11).

6. The pneumatic chuck according to claim 4, characterized in that: The adjustment component (2) comprises an adjustment chamber (17), a lever (18) and a slider (19); one end of the lever (18) is connected to the slider (19); and the other end of the lever (18) is connected to the connecting shaft (14); The regulating chamber (17) is used to limit the range of motion of the lever (18); The lever (18) is used to control the movement of the slider (19); The slider (19) is arranged in the claw guide rail (13), the slider (19) is slidably connected to the claw guide rail (13), and the slider (19) is fixedly connected to the claw body (12), and the slider (19) is used to drive the claw body (12) to move in the claw guide rail (13) to achieve clamping and loosening of the claw (1).

7. The pneumatic chuck according to claim 6, characterized in that: The lever (18) is provided with a lever latch (20); The lever latch (20) is used to fix the position of the lever (18), and the lever (18) can swing around the lever latch (20).

8. The pneumatic chuck according to claim 6, characterized in that: The lever (18) comprises a short rod and a long rod; the short rod end of the lever (18) is connected to the slider (19); and the long rod end of the lever (18) is connected to the connecting shaft (14).

9. The pneumatic chuck according to claim 8, characterized in that: The outer peripheral surface of the connecting shaft (14) is provided with a groove, the lever (18) is connected to the connecting shaft (14) via the groove, and the long rod end of the lever (18) is arranged in the groove; The groove is used to drive the lever (18) to move when the connecting shaft (14) moves.

10. The pneumatic chuck according to claim 8, characterized in that: A limit module (21) is disposed on the outer circumferential surface of the connecting shaft (14); the limit module (21) comprises a wedge-shaped insert block (22), a lifting sleeve (23), a lifting connecting block (24) and a lifting upper connecting shaft (25); the long rod end of the lever (18) is disposed in the limit module (21), and the lever (18) is connected to the connecting shaft (14) via the limit module (21); The wedge-shaped locking block (22), the lifting sleeve (23), the lifting connecting block (24) and the lifting upper connecting shaft (25) are used to cooperate with each other to drive the lever (18) to move when the connecting shaft (14) moves.

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