Fine adjustment type pneumatic chuck

Abstract

The fine adjustment type pneumatic chuck comprises a chuck body, a pneumatic main pipe is fixedly installed in the middle of the chuck body, a connecting main pipe is fixedly installed at the front end of the pneumatic main pipe, and an annular rail is fixedly installed on the outer side of the chuck body; a plurality of fine adjustment type clamping mechanisms are detachably and movably mounted in the annular rail, the annular rail and the driving transmission mechanism are arranged, and a limiting adjustment structure is matched, so that the position of a clamping jaw can be flexibly and finely adjusted in the using period, and the clamping and positioning requirements of workpieces of different specifications can be met without replacing a chuck; meanwhile, through the storage and adjustment design of the disassembly and assembly groove body and the limiting assembly on the annular rail, the clamping jaw mechanisms can be flexibly increased or decreased, a gas circuit rapid butt joint structure is matched, gas circuit convenient disassembly and assembly are achieved, and then the effect of widening the equipment adaptation range is achieved; the problems that in the prior art, the clamping jaw position cannot be adjusted, and clamping jaws and clamping jaw driving mechanisms cannot be increased or decreased according to needs are solved.

Description

A finely adjustable pneumatic chuck Technical Field

[0001] This invention relates to the field of pneumatic chuck technology, and more particularly to a finely adjustable pneumatic chuck. Background Technology

[0002] In the field of CNC lathe machining, pneumatic chucks, as core workpiece positioning and clamping components, directly affect machining accuracy, efficiency, and ease of operation. Therefore, they are widely used in automated machining scenarios for various shaft and disc-shaped parts. To improve the performance of pneumatic chucks, the industry is constantly optimizing their structural design. For example, Chinese patent CN208772497U discloses a pneumatic three-jaw chuck for CNC lathes. This chuck includes a three-jaw chuck body with a ring of rotation angle markings around its perimeter. Multiple three-jaw chuck fastening screws are fixedly installed on the inner front surface, while jaws No. 1, No. 2, and No. 3 are slidably installed on the outer front surface. This existing pneumatic three-jaw chuck, through the inclusion of a pneumatic chamber, a chuck-driven stop, and rotation angle markers, demonstrates certain advantages in practical applications: Firstly, it accelerates the clamping speed of materials while reducing the operator's workload, thus facilitating chuck use; secondly, when operators need to perform angle measurements on rotating materials, they can use the rotation angle markers for reference, effectively improving... While offering convenience for angle statistics and possessing certain practicality, the existing pneumatic three-jaw chucks have gradually revealed significant defects and shortcomings in actual processing and production, due to the diversification of processed parts and the differentiation of specifications. They struggle to meet complex processing needs. Specifically, the chuck employs a fixed three-jaw structure design, and the mounting positions of the individual jaws on the chuck cannot be adjusted. When processing different types and specifications of parts, it is impossible to adapt the clamping requirements by fine-tuning the jaw positions, nor can it quickly increase or decrease the number of jaws and the corresponding jaw drive mechanism according to the actual processing conditions. This structural limitation results in poor chuck versatility; different models of chucks are often required for processing different parts, increasing equipment investment costs, extending production preparation time, and reducing overall processing efficiency. It cannot meet the flexible processing needs of modern production, which involves multiple varieties and small batches. Therefore, structurally improving the existing pneumatic chucks for CNC lathes to enhance their adaptability and versatility has become a pressing technical problem for those skilled in the art. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a finely adjustable pneumatic chuck to more accurately resolve these issues.

[0004] This invention is achieved through the following technical solution: This invention proposes a finely adjustable pneumatic chuck, comprising a chuck body, a pneumatic main pipe fixedly installed in the middle of the chuck body, a connecting main pipe fixedly installed at the front end of the pneumatic main pipe, an annular rail fixedly installed on the outer side of the chuck body, and several finely adjustable clamping mechanisms detachably and movably installed inside the annular rail; each finely adjustable clamping mechanism includes a movable module, which is movably installed inside the annular rail, and a clamping module fixedly installed on the side of the movable module away from the chuck body; an air passage pipe connecting module is fixedly installed on the inner side of the clamping module, and the clamping module is connected to the connecting main pipe at the end of the pneumatic main pipe through the air passage pipe connecting module.

[0005] Furthermore, a clamping support plate is fixedly installed on the side of the connecting main tube away from the chuck body, and the clamping support plate is disposed between the inner sides of each fine-tuning clamping mechanism.

[0006] Furthermore, the active module includes a slider that is slidably connected to the inside of the annular rail. A drive assembly is fixedly installed on the outside of the slider, and the drive assembly is used to drive the slider to move along the direction of the annular rail. The side of the slider away from the chuck body is connected to the clamping module.

[0007] Furthermore, the active module includes a disassembly and assembly groove, which is located on one side of the annular track, and the slider can slide out from the inside of the annular track through the disassembly and assembly groove.

[0008] Furthermore, the drive assembly includes a gear ring and a fixed outer arm. The fixed outer arm is fixedly installed on the outside of the slider. A fixed base is fixedly installed on the outside of the fixed outer arm. A drive motor is fixedly installed at the bottom of the fixed base. A gear is fixedly installed at the output end of the drive motor. The gear ring is fixedly installed on the outside of the chuck body. The gear and the gear ring are meshed together.

[0009] Furthermore, the clamping module includes a mounting base, which is fixedly mounted on the side of the slider away from the chuck body. A telescopic cylinder is fixedly mounted on the inner side of the mounting base. An air hose is fixedly mounted on the input end of the telescopic cylinder. An air pipeline connection module is fixedly mounted on the outer end of the air hose. The outer end of the air hose is connected to the connecting main pipe through the air pipeline connection module. A connecting frame is fixedly mounted on the output end of the telescopic cylinder. A gripper is fixedly mounted on the side of the connecting frame away from the chuck body. A support component is fixedly mounted on the outer side of the telescopic cylinder. A limit component is fixedly mounted on the side of the mounting base near the connecting main pipe.

[0010] Furthermore, the support assembly includes a support rail, which is fixedly installed on the side of the telescopic cylinder away from the slider. A support slide plate is slidably connected inside the support rail, and the inner end of the support slide plate is fixedly connected to the gripper.

[0011] Furthermore, the limiting component includes a guide frame, which is fixedly installed on both ends of the mounting base near the connecting main pipe. A limiting slide plate is slidably connected inside the guide frame. A fixing screw is threadedly connected to the guide frame near the connecting main pipe, with the end of the fixing screw penetrating the guide frame. The fixing screw is a hand-tightening screw. Ball bearings are rotatably connected at equal intervals on the side of the limiting slide plate near the inner side of the annular rail. The ball bearings are in contact with and roll against the inner side of the annular rail. By removing the limiting slide plate that slides inside the guide frame, the limiting slide plate is in contact with the inner side of the annular rail through the ball bearings, thus ensuring that the slider slides stably within the annular rail. When the slider is in use, it is limited by the limiting slide plate. At the same time, the rolling of the ball can reduce the friction. When the limiting is needed, tightening the fixing screw can fix the limiting slide plate. When the slider and its clamping module need to be removed, simply start the drive motor to move the slider to the disassembly slot. At this time, adjust the limiting slide plate to insert into the inside of the guide frame. The limiting slide plate and the annular rail lose their limiting relationship, and then the slider can be removed through the disassembly slot. During use, a fine-adjustment clamping mechanism can also be added through the above operation method. This allows the fine-adjustment clamping mechanism of this device to not only be flexibly adjusted, but also to flexibly increase or decrease the number of fine-adjustment clamping mechanisms, thereby improving its adaptability.

[0012] Furthermore, the gas pipeline connection module includes a solenoid valve and a connector. The solenoid valves are arranged in a ring at equal intervals and fixedly installed on the outer surface of the main connection pipe. The connector is fixedly installed on the inner end of the gas hose. A mounting rail is fixedly installed on one side of the connector. The end of the connector is inserted into the interior of the solenoid valve. Limit springs are fixedly connected to both ends of the interior of the mounting rail. A movable block is fixedly installed on the inner end of the limit spring. The movable block is slidably connected to the interior of the mounting rail. A side plate is fixedly installed on the side of the movable block near the solenoid valve. A locking pin is fixedly installed on the inner side of the side plate. Sleeves are fixedly installed on both sides of the solenoid valve. The end of the locking pin is inserted into the inner side of the sleeve.

[0013] Furthermore, a disassembly guide plate is rotatably connected to the top of the connector. The disassembly guide plate is generally elliptical in shape. A disassembly guide plate is fixedly connected to the top of the movable block. The inner end of the disassembly guide plate is connected to the outer surface of the disassembly guide plate. A disassembly adjustment handwheel is fixedly connected to the side of the disassembly guide plate away from the connector. By turning the disassembly adjustment handwheel, the disassembly guide plate can be rotated. The elliptical disassembly guide plate can squeeze the disassembly guide plates on both sides, pushing the movable block to compress the limit spring. The movable block moves outward, which can cause the locking pin on the side plate to disengage from the sleeve. At this time, the connector can be pulled out and removed from the inside of the solenoid valve.

[0014] The beneficial effects of this invention are as follows: 1. During the application of this technical solution, by setting up an annular rail and a drive transmission mechanism, combined with a limit adjustment structure, the position of the gripper can be flexibly fine-tuned during use. It can adapt to the clamping and positioning requirements of workpieces of different specifications without replacing the chuck. Simultaneously, through the disassembly and assembly grooves on the annular rail and the storage and adjustment design of the limit components, the gripper mechanism can be flexibly added or removed. Combined with a quick-connect structure for the air circuit, convenient disassembly and assembly of the air circuit is achieved, thereby broadening the equipment's adaptability range. This solves the problems of existing technologies where the gripper position cannot be adjusted, grippers cannot be added or removed according to requirements, and the gripper drive mechanism is inadequate. Problem 2: During the application of this technical solution, the air circuit connection stabilization mechanism ensures the stability of the air circuit connection during use, preventing the air circuit from falling off during processing and affecting clamping stability. At the same time, with the help of the disassembly and adjustment mechanism, the air circuit can be quickly disassembled and assembled with simple operation, reducing the workload of operators and improving the efficiency of equipment debugging and maintenance. Combined with multiple sets of guide limit and center positioning support structures, the clamping stability and positioning accuracy are greatly improved, thereby achieving the effect of ensuring processing accuracy and solving the problems of cumbersome air circuit disassembly and assembly and insufficient clamping positioning accuracy in the existing technology. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the rear view structure of the present invention; Figure 3 is a schematic diagram of the front view structure of the fine-tuning clamping mechanism of the present invention in the split state; Figure 4 is a schematic diagram of the rear view structure of the fine-tuning clamping mechanism of the present invention in the split state; Figure 5 is a schematic diagram of the front view structure of the adjustable gripper mechanism of the present invention; Figure 6 is a schematic diagram of the rear view structure of the adjustable gripper mechanism of the present invention; Figure 7 is an enlarged schematic diagram of section A in Figure 3 of the present invention; Figure 8 is an enlarged schematic diagram of section B in Figure 3 of the present invention.

[0016] In the diagram: 1. Chuck body; 2. Pneumatic main pipe; 3. Connecting main pipe; 4. Circular rail; 5. Fine-tuning clamping mechanism; 51. Movable module; 511. Slider; 512. Drive assembly; 5121. Gear ring; 5122. Fixed outer arm; 5123. Fixed base; 5124. Drive motor; 5125. Gear; 513. Disassembly / assembly slot; 52. Clamping module; 521. Mounting base; 522. Telescopic cylinder; 523. Air hose; 524. Connecting frame; 525. Gripper; 526. Support assembly; 5 261. Support rail; 5262. Support slide plate; 527. Limiting assembly; 5271. Guide frame; 5272. Limiting slide plate; 5273. Fixing screw; 5274. Ball bearing; 53. Air pipeline connection module; 531. Solenoid valve; 532. Connector; 533. Mounting rail frame; 534. Limiting spring; 535. Movable block; 536. Side plate; 537. Locking pin; 538. Sleeve; 539. Disassembly guide plate; 5310. Disassembly guide plate; 5311. Disassembly and adjustment handwheel; 6. Clamping bearing plate. 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. Embodiment 1

[0018] Referring to Figures 1-8, a finely adjustable pneumatic chuck includes a chuck body 1, a pneumatic main pipe 2 fixedly mounted in the middle of the chuck body 1, a connecting main pipe 3 fixedly mounted at the front end of the pneumatic main pipe 2, an annular rail 4 fixedly mounted on the outer side of the chuck body 1, and several finely adjustable clamping mechanisms 5 detachably mounted inside the annular rail 4. Each finely adjustable clamping mechanism 5 includes a movable module 51 movably mounted inside the annular rail 4. A clamping module 52 is fixedly mounted on the side of the movable module 51 away from the chuck body 1. An air passage pipe connecting module 53 is fixedly mounted on the inner side of the clamping module 52. The clamping module 52 is connected to the connecting main pipe 3 at the end of the pneumatic main pipe 2 via the air passage pipe connecting module 53. The annular rail 4 is used to connect the finely adjustable clamping mechanisms. The cooperation of mechanism 5 allows for flexible adjustment of the number of grippers 525. Simultaneously, the adjustable gripping mechanism 5, with its movable adaptation to the annular rail 4, enables adjustment of the gripper 525 position, thus adapting to the gripping requirements of different workpiece specifications. This solves the problems of existing technologies where the gripper 525 position cannot be adjusted or the number of grippers 525 cannot be increased or decreased as needed. Furthermore, the cooperation between the pneumatic pipeline connecting module 53 and the pneumatic main pipe 2 and connecting main pipe 3 ensures stable pneumatic connection between the gripping module 52 and the pneumatic main pipe 2, providing the beneficial effect of reliable pneumatic connection. This ensures that the gripping module 52 can stably obtain pneumatic power to complete the gripping action, improving the overall stability of the device. It can adapt to various workpiece gripping requirements without replacing the chuck, reducing production preparation time and lowering operational difficulty.

[0019] As shown in Figures 1-4, a clamping support plate 6 is fixedly installed on the side of the connecting main pipe 3 away from the chuck body 1. The clamping support plate 6 is disposed between the inner sides of each fine-tuning clamping mechanism 5. The movable module 51 includes a slider 511, which is slidably connected to the inside of the annular rail 4. A drive assembly 512 is fixedly installed on the outer side of the slider 511. The drive assembly 512 is used to drive the slider 511 to move along the direction of the annular rail 4. The side of the slider 511 away from the chuck body 1 is connected to the clamping module 52. The movable module 51 includes a disassembly and assembly slot 513, which is formed in... On one side of the annular rail 4, the slider 511 can slide out from the inside of the annular rail 4 through the disassembly groove 513. The drive assembly 512 includes a gear ring 5121 and a fixed outer arm 5122. The fixed outer arm 5122 is fixedly installed on the outside of the slider 511. A fixed base 5123 is fixedly installed on the outside of the fixed outer arm 5122. A drive motor 5124 is fixedly installed at the bottom of the fixed base 5123. A gear 5125 is fixedly installed at the output end of the drive motor 5124. The gear ring 5121 is fixedly installed on the outside of the chuck body 1. The gear 5125 and the gear ring 5121 are meshed together.

[0020] The technical solutions in the above embodiments of this application, by setting the clamping bearing plate 6, can achieve the effect of providing stable bearing and positioning for the workpiece to be processed, ensuring that the workpiece is in the central clamping area of ​​each fine-adjustment clamping mechanism 5, improving clamping accuracy. The sliding cooperation between the slider 511 and the annular rail 4, combined with the meshing transmission structure of the drive motor 5124, gear 5125, and gear ring 5121, enables the smooth movement of the gripper 525 mechanism along the annular rail 4, thereby achieving precise adjustment of the gripper 525 position. This solves the problem of the inability to adjust the gripper 525 position in the prior art. By opening a disassembly and assembly groove 513 on one side of the annular rail 4, convenient disassembly and assembly of the slider 511 and the corresponding gripper 525 mechanism can be achieved, thereby flexibly increasing or decreasing the number of gripper 525 mechanisms. This solves the problem in the prior art that the gripper 525 and drive mechanism cannot be increased or decreased according to processing needs. It can adapt to the clamping needs of different specifications of workpieces without changing the chuck, reducing equipment investment costs, reducing production preparation time, and improving processing efficiency. Example 2

[0021] Referring to Figures 3-6, the clamping module 52 includes a mounting base 521, which is fixedly mounted on the side of the slider 511 away from the chuck body 1. A telescopic cylinder 522 is fixedly mounted on the inner side of the mounting base 521. An air hose 523 is fixedly mounted on the input end of the telescopic cylinder 522. An air pipe connection module 53 is fixedly mounted on the outer end of the air hose 523. The outer end of the air hose 523 is connected to the connecting main pipe 3 through the air pipe connection module 53. A connecting frame 524 is fixedly mounted on the output end of the telescopic cylinder 522. A gripper 525 is fixedly mounted on the side of the connecting frame 524 away from the chuck body 1. A support component 526 is fixedly mounted on the outer side of the telescopic cylinder 522. A limit component 527 is fixedly mounted on the side of the mounting base 521 near the connecting main pipe 3. The support component 526 includes a support... The support rail 5261 is fixedly installed on the side of the telescopic cylinder 522 away from the slider 511. The support slide plate 5262 is slidably connected inside the support rail 5261. The inner end of the support slide plate 5262 is fixedly connected to the gripper 525. The limiting component 527 includes a guide frame 5271. The guide frame 5271 is fixedly installed on both ends of the mounting base 521 near the connecting main pipe 3. The limiting slide plate 5272 is slidably connected inside the guide frame 5271. A fixing screw 5273 is threadedly connected to the side of the guide frame 5271 near the connecting main pipe 3. The end of the fixing screw 5273 passes through the guide frame 5271. The fixing screw 5273 is a hand-tightening screw. The side of the limiting slide plate 5272 near the inner side of the annular rail 4 is rotatably connected with balls 5274 at equal intervals. The balls 5274 and the inner side of the annular rail 4 are in close rolling contact.

[0022] In the above-described embodiments of this application, the device, through the cooperation of the telescopic cylinder 522, the connecting frame 524, and the gripper 525, can achieve a stable clamping effect on the workpiece, ensuring that the workpiece is not easily loosened during processing. The sliding cooperation of the support rail 5261 and the support slide plate 5262 provides guiding support for the movement of the gripper 525, improving the stability of the gripper 525's movement and preventing the gripper 525 from shifting during clamping, thus ensuring clamping accuracy. The cooperation of the guide frame 5271, the limiting slide plate 5272, and the ball bearing 5274 reduces the friction of the slider 511 moving along the annular rail 4, ensuring smooth adjustment of the gripper 525's position. Combined with the hand-tightening fixing screw 5273, stable positioning of the gripper 525 after adjustment can be achieved, solving the problem of unreliable fixation of the gripper 525 after position adjustment in the prior art, further improving the reliability of the device. It can adapt to the clamping requirements of different specifications of workpieces without replacing the chuck, reducing operational difficulty. Example 3

[0023] Referring to Figures 1-3 and 7-8, the gas pipeline connection module 53 includes a solenoid valve 531 and a connector 532. The solenoid valves 531 are arranged in a ring at equal intervals and fixedly installed on the outer surface of the main connecting pipe 3. The connector 532 is fixedly installed on the inner end of the gas hose 523. A mounting rail 533 is fixedly installed on one side of the connector 532. The end of the connector 532 is inserted into the interior of the solenoid valve 531. Limit springs 534 are fixedly connected to both ends of the mounting rail 533. Movable blocks 535 are fixedly installed on the inner ends of the limit springs 534. The movable blocks 535 are slidably connected to the interior of the mounting rail 533. A side plate 536 is fixedly installed on the side of the solenoid valve 531. A retaining pin 537 is fixedly installed on the inner side of the side plate 536. A retaining sleeve 538 is fixedly installed on both sides of the solenoid valve 531. The end of the retaining pin 537 is inserted into the inner side of the retaining sleeve 538. A disassembly guide plate 539 is rotatably connected to the top of the connector 532. The disassembly guide plate 539 is generally elliptical. A disassembly guide plate 5310 is fixedly connected to the top of the movable block 535. The inner end of the disassembly guide plate 5310 is connected to the outer surface of the disassembly guide plate 539. A disassembly adjustment handwheel 5311 is fixedly connected to the side of the disassembly guide plate 539 away from the connector 532.

[0024] The technical solution in the above-described embodiments of this application, by setting the connector 532 and the solenoid valve 531 together, can achieve the effect of rapid connection of the air circuit, ensure stable communication between the air circuit hose 523 and the connecting main pipe 3, and ensure the reliability of the pneumatic power supply of the clamping module 52. By using the mounting rail 533, limit spring 534, movable block 535, side plate 536, locking pin 537 and clamping sleeve 538 together, the connector 532 and the solenoid valve 531 can be firmly locked, preventing the air circuit from falling off during processing and improving the safety and stability of the air circuit connection. With the help of the disassembly guide plate 539, disassembly guide plate 5310 and disassembly adjustment handwheel 5311, the locking pin 537 and clamping sleeve 538 can be easily separated, achieving the effect of rapid disassembly and assembly of the air circuit, reducing the difficulty of operation for operators, adapting to the flexible addition and reduction of the clamping claw 525 mechanism, solving the problems of cumbersome disassembly and assembly and poor stability of air circuit connection in the prior art, and improving the efficiency of equipment debugging and maintenance.

[0025] The operating principle and advantages of this invention are as follows: During application, when using this adjustable pneumatic chuck, the configuration and position of the gripper 525 mechanism are first adjusted by adding or removing it. After determining the number of adjustable gripping mechanisms 5 according to the specifications of the workpiece and the gripping requirements, if it is necessary to add gripper 525 mechanisms, the slider 511 can be slid into the annular rail 4 through the disassembly groove 513 on one side of the annular rail 4. Then, the limiting slide plate 5272 in the limiting assembly 527 is adjusted and pulled out from the guide frame 5271, so that the ball bearing 5274 at the bottom of the limiting slide plate 5272 is in contact with the annular rail 4. Side-fitting, the guide frame 5271 provides sliding guidance for the limiting slide plate 5272, while the ball bearing 5274 reduces the friction between the two, thus ensuring smooth subsequent movement of the slider 511. At this time, the hand-tightening fixing screw 5273 on one side of the guide frame 5271 needs to be tightened so that the end of the fixing screw 5273 abuts against the limiting slide plate 5272, completing the fixing of the limiting plate. If it is necessary to reduce the gripper 525 mechanism, first start the drive motor 5124 in the drive assembly 512. The output end of the drive motor 5124 drives the gear 5125 to rotate. Because the gear 5125 meshes with the gear ring 5121, the gear... Ring 5121 is fixed to the outside of chuck body 1. Therefore, the rotation of gear 5125 can drive the fixed outer arm 5122 and slider 511 to move along the annular rail 4. When slider 511 moves to the disassembly slot 513, the drive motor 5124 is stopped. Then, the limiting slide plate 5272 is inserted into the guide frame 5271 for storage, so that the limiting slide plate 5272 is disengaged from the annular rail 4. After that, slider 511 can be slid out through the disassembly slot 513 to complete the removal. The fixed outer arm 5122 is used to connect slider 511 and fixed base 5123, and fixed base 5123 is used to fix the drive motor. The engagement of the gear 5124, the gear ring 5121, and the gear 5125 converts the rotational power of the drive motor 5124 into the linear movement power of the slider 511. After configuring the number of gripper 525 mechanisms, each drive motor 5124 is started, driving the gear 5125 to roll along the gear ring 5121, which in turn drives the slider 511 and the entire clamping module 52 to move in a circle along the annular rail 4. The annular rail 4 provides a moving track for the slider 511 to ensure stable movement. When all gripper 525 mechanisms have moved to the preset position suitable for workpiece clamping, the drive motor 5124 is stopped.

[0026] After the position of the gripper 525 is determined, the air circuit connection operation can be performed. The connector 532 at the outer end of the air hose 523 in the clamping module 52 is inserted into the solenoid valve 531 on the outer surface of the connecting main pipe 3. During the insertion of the connector 532, the limiting spring 534 inside the mounting rail 533 is in a naturally extended state, which will drive the movable block 535 and the side plate 536 to move inward, causing the locking pin 537 on the inner side of the side plate 536 to insert into the retaining sleeves 538 on both sides of the solenoid valve 531, thus fixing the connector 532 to the solenoid valve 531. The solenoid valve 531 is used to control the air circuit opening and closing of the corresponding clamping module 52. The connector 532 enables quick connection between the air hose 523 and the solenoid valve 531. The cooperation of the limiting spring 534, the movable block 535, the side plate 536, and the locking pin 537 strengthens the stability of the air circuit connection and prevents the air circuit from falling off. After the air circuit connection is completed, the workpiece clamping stage begins. First, the workpiece to be processed... The workpiece is placed on the clamping support plate 6, which provides support to ensure the centering of the workpiece. Then, the pneumatic system is activated. The pneumatic main pipe 2 delivers compressed air to each solenoid valve 531 through the connecting main pipe 3. When the solenoid valve 531 is opened, the compressed air is delivered to the telescopic cylinder 522 through the air hose 523. The telescopic cylinder 522 drives the connecting frame 524 at the output end to move inward. The connecting frame 524 drives the gripper 525 to move towards the workpiece until the gripper 525 is in contact with the outer surface of the workpiece, thus completing the clamping and fixing of the workpiece. The mounting base 521 is used to fix the telescopic cylinder 522. The telescopic cylinder 522 provides clamping power to the gripper 525. The connecting frame 524 realizes the power transmission. The support rail 5261 provides sliding guidance for the support slide plate 5262. The support slide plate 5262 is fixedly connected to the gripper 525, which can enhance the stability of the gripper 525 during movement and prevent clamping deviation.

[0027] After the workpiece is processed, the pneumatic system is turned off, the telescopic cylinder 522 is depressurized, and the gripper 525 moves outward to disengage from the workpiece surface. After the gripper is released, the processed workpiece can be taken out. If different specifications of workpieces need to be processed later, the above operations such as adding or removing gripper 525, adjusting its position, and connecting the air circuit can be repeated to complete the adaptation and adjustment of the equipment. When it is necessary to disassemble the air circuit, turn the disassembly and assembly adjustment handwheel 5311. The disassembly and assembly adjustment handwheel 5311 drives the disassembly and assembly guide plate 539 to rotate. Because the disassembly and assembly guide plate 539 is elliptical, it will squeeze the disassembly and assembly guide plates 5310 on both sides during its rotation, so that the disassembly and assembly guide plates 5310 drive the movable block 535 to move outward. The movable block 535 compresses the limit spring 534, and at the same time drives the side plate 536 and the locking pin 537 to move outward. The locking pin 537 disengages from the sleeve 538. At this time, the connector 532 can be pulled out from the solenoid valve 531 to complete the disassembly of the air circuit.

[0028] This technical solution, through the cooperative design of the annular rail 4 and the slider 511, combined with the transmission structure of the drive motor 5124, the gear ring 5121, and the gear 5125, achieves flexible fine-tuning of the gripper 525 position, solving the problem of the inability to adjust the gripper 525 position in the prior art. It can adapt to the clamping and positioning requirements of workpieces of different specifications without replacing the chuck. By setting a disassembly groove 513 on the annular rail 4, and cooperating with the storage and adjustment of the limiting component 527, the fine-tuning clamping mechanism 5 can be flexibly added or removed. Combined with the connector 532 in the pneumatic pipeline connection module 53 and the electromagnetic... The quick-connect structure of valve 531, locking pin 537, and clamping sleeve 538 enables convenient disassembly and assembly of the air circuit. This solves the problem in the background technology that the gripper 525 and its drive mechanism cannot be added or removed according to requirements, significantly improving the adaptability of the equipment. The structure of the limit spring 534 in the air circuit connection module 53 driving the locking pin 537 to insert into the clamping sleeve 538 ensures the stability of the air circuit connection and prevents the air circuit from falling off during processing, thus affecting the clamping stability. The disassembly and assembly of the guide plate 539, guide plate 5310, and adjustment handwheel 5311 only requires turning the adjustment wheel. The handwheel allows the locking pin 537 to disengage from the sleeve 538, enabling quick disassembly and assembly of the air circuit. This reduces the workload of operators and improves the efficiency of equipment debugging and maintenance. The guiding and limiting functions of the support slide plate 5262 and support rail 5261 in the support assembly 526, the smooth movement of the ball bearing 5274 against the annular rail 4 in the limiting assembly 527, and the center positioning support of the clamping bearing plate 6 for the workpiece, all contribute to improving the clamping stability and positioning accuracy of the device, ensuring machining precision. The device also features fine-tuning of the gripper 525 position and the ability to add or remove grippers. With its flexible design, this device can adapt to the clamping needs of different types and specifications of shaft and disc parts, eliminating the need to equip different workpieces with different models of chucks. This effectively reduces equipment investment costs, shortens production preparation time, and improves overall processing efficiency, making it suitable for flexible processing needs of multiple varieties and small batches. It should be added that the main electronic components and their specifications selected in this technical solution are as follows: The front end of the telescopic cylinder 522 can be equipped with a threaded joint as required, and the threaded joint is also threaded with an air passage pipeline connection module 53 for dual-pipeline control of the telescopic cylinder 522.

[0029] During use, sensors can be installed according to specific application requirements. Specifically, a displacement sensor (model KTC-100) with a measurement range of 0mm to 100mm and an output signal of 4mA to 20mA can be installed inside the annular rail 4 to detect the movement position of the slider 511 in real time, ensuring the accuracy of the gripper 525 position adjustment. A photoelectric sensor (model E3F-DS30C4) with a detection distance of 5mm to 30mm can be installed on the clamping bearing plate 6 to detect whether the workpiece is placed in place, preventing the equipment from running idle when there is no workpiece. A magnetic switch (model CS1-F) with a rated voltage of DC24V can be installed at the end of the stroke of the telescopic cylinder 522 to detect the extension and retraction of the cylinder piston. The positioning status is fed back to the controller to achieve action interlocking; a speed sensor, model HCH-M12-4N Hall effect speed sensor, is installed on the outside of the chuck body 1, with a measurement range of 0rpm to 10000rpm, to monitor the chuck rotation speed and ensure stable speed during processing; a temperature sensor, model DS18B20, is installed in the electrical control box, with a measurement range of -55℃ to 125℃, to monitor the operating temperature of the circuit system, and triggers an alarm through the controller when the temperature exceeds the set range; all the above sensors are connected to the corresponding input terminals of the PLC controller through shielded cables to provide signal support for automatic operation or assisted manual operation of the equipment, and can be selected for installation and application according to actual processing needs.

[0030] The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principles of each electronic component are not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art, and the application of the prior art is very mature. Therefore, they will not be elaborated here.

[0031] Of course, the present invention may have many other embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

Claims

1. A finely adjustable pneumatic chuck, characterized in that, The chuck body (1) is included. A pneumatic main pipe (2) is fixedly installed in the middle of the chuck body (1). A connecting main pipe (3) is fixedly installed at the front end of the pneumatic main pipe (2). An annular rail (4) is fixedly installed on the outer side of the chuck body (1). Several fine-tuning clamping mechanisms (5) are detachably and movably installed inside the annular rail (4). The fine-tuning clamping mechanism (5) includes a movable module (51). The movable module (51) is movably installed inside the annular rail (4). A clamping module (52) is fixedly installed on the side of the movable module (51) away from the chuck body (1). An air passage pipe connecting module (53) is fixedly installed on the inner side of the clamping module (52). The clamping module (52) is connected to the connecting main pipe (3) at the end of the pneumatic main pipe (2) through the air passage pipe connecting module (53).

2. The adjustable pneumatic chuck according to claim 1, characterized in that, The connecting tube (3) is fixedly mounted with a clamping bearing plate (6) on the side away from the chuck body (1), and the clamping bearing plate (6) is disposed between the inner sides of each fine-tuning clamping mechanism (5).

3. The adjustable pneumatic chuck according to claim 2, characterized in that, The active module (51) includes a slider (511), which is slidably connected to the inside of the annular rail (4). A drive assembly (512) is fixedly installed on the outside of the slider (511). The drive assembly (512) is used to drive the slider (511) to move along the direction of the annular rail (4). The side of the slider (511) away from the chuck body (1) is connected to the clamping module (52).

4. The adjustable pneumatic chuck according to claim 3, characterized in that, The active module (51) includes a disassembly groove (513), which is located on one side of the annular rail (4). The slider (511) can slide out from the inside of the annular rail (4) through the disassembly groove (513).

5. The adjustable pneumatic chuck according to claim 4, characterized in that, The drive assembly (512) includes a gear ring (5121) and a fixed outer arm (5122). The fixed outer arm (5122) is fixedly installed on the outside of the slider (511). A fixed base (5123) is fixedly installed on the outside of the fixed outer arm (5122). A drive motor (5124) is fixedly installed at the bottom of the fixed base (5123). A gear (5125) is fixedly installed at the output end of the drive motor (5124). The gear ring (5121) is fixedly installed on the outside of the chuck body (1). The gear (5125) and the gear ring (5121) are meshed together.

6. The adjustable pneumatic chuck according to claim 5, characterized in that, The clamping module (52) includes a mounting base (521), which is fixedly mounted on the side of the slider (511) away from the chuck body (1). A telescopic cylinder (522) is fixedly mounted on the inner side of the mounting base (521). An air hose (523) is fixedly mounted on the input end of the telescopic cylinder (522). An air pipeline connection module (53) is fixedly mounted on the outer end of the air hose (523). The outer end of the air hose (523) is connected to the connecting main pipe (3) through the air pipeline connection module (53). A connecting frame (524) is fixedly mounted on the output end of the telescopic cylinder (522). A gripper (525) is fixedly mounted on the side of the connecting frame (524) away from the chuck body (1). A support component (526) is fixedly mounted on the outer side of the telescopic cylinder (522). A limit component (527) is fixedly mounted on the side of the mounting base (521) near the connecting main pipe (3).

7. The adjustable pneumatic chuck according to claim 6, characterized in that, The support assembly (526) includes a support rail (5261), which is fixedly installed on the side of the telescopic cylinder (522) away from the slider (511). The support rail (5261) is slidably connected to a support slide plate (5262), and the inner end of the support slide plate (5262) ​​is fixedly connected to a gripper (525).

8. The adjustable pneumatic chuck according to claim 7, characterized in that, The limiting component (527) includes a guide frame (5271), which is fixedly installed on both ends of the mounting base (521) near the connecting main pipe (3). The guide frame (5271) is slidably connected to a limiting slide plate (5272). The guide frame (5271) is threadedly connected to a fixing screw (5273) near the connecting main pipe (3). The end of the fixing screw (5273) passes through the guide frame (5271). The fixing screw (5273) is a hand-tightening screw. The limiting slide plate (5272) is rotatably connected to a ball bearing (5274) at equal intervals on the side near the inner side of the annular rail (4). The ball bearing (5274) and the inner side of the annular rail (4) are in close rolling contact.

9. A finely adjustable pneumatic chuck according to claim 8, characterized in that, The gas pipeline connection module (53) includes a solenoid valve (531) and a connector (532). The solenoid valves (531) are arranged in a ring at equal intervals and fixedly installed on the outer surface of the main connection pipe (3). The connector (532) is fixedly installed on the inner end of the gas hose (523). A mounting bracket (533) is fixedly installed on one side of the connector (532). The end of the connector (532) is inserted into the inside of the solenoid valve (531). Limiters are fixedly connected to both ends of the mounting bracket (533). A spring (534) is fixedly installed with a movable block (535) at its inner end. The movable block (535) is slidably connected to the inside of the mounting rail (533). A side plate (536) is fixedly installed on the side of the movable block (535) near the solenoid valve (531). A locking pin (537) is fixedly installed on the inner side of the side plate (536). A sleeve (538) is fixedly installed on both sides of the solenoid valve (531). The end of the locking pin (537) is inserted into the inner side of the sleeve (538).

10. A finely adjustable pneumatic chuck according to claim 9, characterized in that, The top of the connector (532) is rotatably connected to a disassembly guide plate (539), which is generally elliptical in shape. The top of the movable block (535) is fixedly connected to a disassembly guide plate (5310), the inner end of the disassembly guide plate (5310) and the outer surface of the disassembly guide plate (539) are connected in a transmission manner, and a disassembly adjustment handwheel (5311) is fixedly connected to the side of the disassembly guide plate (539) away from the connector (532).

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