Pneumatic block expander chuck

Abstract

The utility model discloses a kind of pneumatic expansion block chuck, it includes pedestal, the upper surface of pedestal is fixedly connected with clamping body, the inner side of clamping body is fixedly connected with expansion block, the side inner wall of expansion block is fixedly connected with base plate one, the side surface of base plate one is fixedly connected with slide bar, the side surface of slide bar is slidably connected with sleeve, the end of sleeve away from slide bar is fixedly connected with base plate two, the side surface of base plate two is fixedly connected with spring, the lower surface of pedestal is fixedly connected with base, the side surface of base is rotatably connected with rotating ring, the side surface of base is fixedly connected with connecting plate, the side surface of connecting plate is provided with air hole, the inside of base is provided with air cavity.According to above component, the expansion and contraction of expansion block is controlled using air path, cooperating with the reset action of spring, workpiece fixing and releasing action is rapid, greatly improve operation efficiency;Rotating ring can be flexibly rotated along base, can adjust air inlet and air outlet direction according to demand, adapt to different external pipeline layout.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic chuck technology, and in particular to a pneumatic expansion block chuck. Background Technology

[0002] In many industrial fields such as machining, parts inspection, and assembly, the precise clamping and fixation of workpieces is one of the core links to ensure work quality and improve production efficiency. Especially for workpieces with internal hole structures, the clamping stability directly determines the dimensional accuracy, surface quality, and reliability of inspection data in subsequent processing. Therefore, stringent requirements are placed on the performance of specialized clamping devices. To solve the problem of low efficiency in manual operation, some pneumatic clamping devices have gradually emerged. The existing pneumatic expansion block chuck is a precision mechanical device that uses air pressure to clamp and release workpieces. The core principle is to use compressed air to drive the expansion block to expand or contract radially, thereby stably clamping various workpieces.

[0003] However, in most existing devices, the expansion block struggles to achieve strictly stable radial movement during expansion, often accompanied by circumferential offset or axial movement. This results in a loose fit between the expansion block and the workpiece's inner hole, failing to generate uniform clamping force and leading to insecure workpiece fixation. Regarding operational efficiency and flexibility, some devices suffer from poorly designed pneumatic control structures, resulting in slow expansion and contraction response of the expansion block and a lack of convenient reset mechanisms. Furthermore, the installation directions of the air inlet and outlet are often fixed, making it difficult for the device to adapt quickly when the external piping layout changes. Adjustments to the overall installation position are necessary, increasing the complexity of the workflow. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a pneumatic expansion block chuck that solves the problems of easy workpiece offset and loosening during clamping. Through the cooperation of the slide rod, sleeve and spring, the expansion block moves steadily in the radial direction, closely fitting the inner hole of the workpiece to achieve firm fixation and ensure the stability of processing or inspection. It also solves the problem of low work efficiency. The air circuit control combined with spring reset allows for rapid workpiece fixing and release, greatly improving work efficiency. Furthermore, it solves the problem of the inlet and outlet directions being difficult to adapt to the external pipeline layout. The rotating ring can be flexibly rotated to adjust the direction, making it more adaptable. Finally, it addresses the problem of gas leakage affecting control accuracy. The sealing ring around the connecting plate effectively prevents leakage and ensures accurate air circuit control.

[0005] This utility model also provides a pneumatic expansion block chuck with the above-mentioned features, comprising: a base, a clamping body fixedly connected to the upper surface of the base, an expansion block fixedly connected to the inner side of the clamping body, a base plate one fixedly connected to the inner side wall of the expansion block, a slide rod fixedly connected to the side surface of the base plate one, a sleeve slidably connected to the side surface of the slide rod, a base plate two fixedly connected to the end of the sleeve away from the slide rod, and a spring fixedly connected to the side surface of the base plate two. A base is fixedly connected to the lower surface of the base, a rotating ring is rotatably connected to the side surface of the base, a connecting plate is fixedly connected to the side surface of the base, and an air vent is provided on the side surface of the connecting plate. An air cavity is provided inside the base. Based on the above components, the expansion and contraction of the expansion block is controlled by an air circuit, and with the reset action of the spring, the workpiece fixing and release actions are rapid, greatly improving work efficiency; the rotating ring can rotate flexibly along the base, and the direction of the air inlet and outlet can be adjusted according to needs to adapt to different external pipeline layouts.

[0006] According to the pneumatic expansion block chuck of this utility model, an air inlet is fixedly connected to the side surface of the rotating ring, and an air outlet is fixedly connected to the side surface of the rotating ring. The air inlet and outlet can be used to control the intake or exhaust of gas into the expansion block.

[0007] According to the pneumatic expansion block chuck of this utility model, the side surface of the connecting plate is rotatably connected to the rotating ring, and the upper surface of the base is provided with fixing holes. The base is fixed to the required device through the fixing holes.

[0008] According to the present invention, a pneumatic expansion block chuck is provided, wherein an air pipe is fixedly connected to the upper surface of the base, and the end of the air pipe away from the base extends through the expansion block into its interior. Gas is injected into or drawn out of the expansion block through the air pipe.

[0009] According to the pneumatic expansion block chuck of this utility model, the air inlet is connected to the air chamber, and the end of the air chamber away from the air inlet is connected to the air pipe. This allows the air chamber to connect the air inlet to the air pipe.

[0010] According to the pneumatic expansion block chuck of this utility model, the end of the spring away from the second base plate is fixedly connected to the first base plate, and the end of the second base plate away from the sleeve is fixedly connected to the expansion block. The expansion block can be reset by pulling the second base plate with the spring.

[0011] According to the pneumatic expansion block chuck of this utility model, a screw is threadedly connected to one end of the second base plate near the expansion block, and the end of the screw near the second base plate is in contact with the expansion block. The screw is used to fix the second base plate and the expansion block.

[0012] According to the pneumatic expansion block chuck of this utility model, a screw two is threadedly connected to one end of the base plate near the expansion block, and the expansion block and the chuck body are located between the screw two and the base plate. The expansion block is fixed to the chuck body by the screw two.

[0013] Beneficial effects: This technical solution utilizes a pneumatic expansion block chuck. Through the coordinated structure of a sliding rod, sleeve, and spring, the expansion block can move stably radially during expansion, preventing displacement and ensuring a tight fit against the inner hole of the workpiece for secure fixation, guaranteeing that the workpiece will not loosen during processing or inspection. Secondly, it offers high efficiency and convenience. The expansion and contraction of the expansion block are controlled by a pneumatic circuit, combined with the spring's reset action, resulting in rapid workpiece fixing and release, significantly improving work efficiency. The rotating ring can flexibly rotate along the base, allowing adjustment of the air inlet and outlet directions to adapt to different external piping layouts. Furthermore, it boasts excellent sealing and installation performance. The sealing ring around the connecting plate effectively prevents gas leakage, ensuring precise pneumatic control. The base's fixing hole design and screw connection method facilitate easy mounting on various equipment, and the components are easy to disassemble and maintain. Overall, through the synergy of the pneumatic circuit and mechanical structure, it achieves efficient, stable, and flexible clamping operations. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an overall structural diagram of a pneumatic expansion block chuck according to the present invention; Figure 2 This is a structural diagram of the pneumatic expansion block chuck of this utility model; Figure 3 This is a cross-sectional view of the expansion block structure of a pneumatic expansion block chuck according to the present invention; Figure 4 This is a cross-sectional view of the base and substrate of a pneumatic expansion block chuck according to the present invention; Figure 5 This is a structural diagram of the base and substrate of a pneumatic expansion block chuck according to the present invention.

[0015] Legend: 1. Clamp body; 2. Expansion block; 3. Base; 4. Base plate; 5. Rotating ring; 6. Air inlet; 7. Air outlet; 8. Base plate one; 9. Slide rod; 10. Spring; 11. Base plate two; 12. Sleeve; 13. Air pipe; 14. Connecting plate; 15. Air chamber; 16. Fixing hole; 17. Vent; 18. Screw one; 19. Screw two. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-5 This utility model provides a pneumatic expansion block chuck, which includes as follows: Figure 1 As shown, it includes: a base 3, a clamping body 1 fixedly connected to the upper surface of the base 3, an expansion block 2 fixedly connected to the inner side of the clamping body 1, a base plate 8 fixedly connected to the inner side wall of the expansion block 2, a sliding rod 9 fixedly connected to the side surface of the base plate 8, a sleeve 12 slidably connected to the side surface of the sliding rod 9, a base plate 11 fixedly connected to the end of the sleeve 12 away from the sliding rod 9, a base plate 11 fixedly connected to the end of the base plate 11 away from the sleeve 12 and fixedly connected to the expansion block 2, and a spring 10 fixedly connected to the side surface of the base plate 11, a spring 10 fixedly connected to the end of the spring 10 away from the base plate 11 and fixedly connected to the base plate 8. Specifically, when high-pressure gas is introduced into the expansion block 2, the high-pressure gas will cause the rubber expansion block 2 to expand. At this time, the second base plate 11 fixed near the periphery of the expansion block 2 will stretch the spring 10 and drive the sleeve 12 to move along the slide rod 9 fixed on the first base plate 8, ensuring that the expansion block 2 can expand stably in the radial direction, so that the expansion block 2 can fix the workpiece with the inner hole. When it is necessary to release the fixation, the high-pressure gas in the expansion block 2 will be sucked away, and at the same time the spring 10 will pull the second base plate 11 so that the expansion block 2 can quickly reset. An air pipe 13 is fixedly connected to the upper surface of the base 3. The end of the air pipe 13 away from the base 3 passes through the expansion block 2 and extends into the interior of the expansion block 2. A base 4 is fixedly connected to the lower surface of the base 3. A rotating ring 5 is rotatably connected to the side surface of the base 4. An air inlet 6 is fixedly connected to the side surface of the rotating ring 5. An air outlet 7 is fixedly connected to the side surface of the rotating ring 5. A connecting plate 14 is fixedly connected to the side surface of the base 4. An air vent 17 is provided on the side surface of the connecting plate 14. The air vent 17 is connected to the air chamber 15. An air chamber 15 is provided inside the base 4. The end of the air chamber 15 away from the air vent 17 is connected to the air pipe 13.

[0018] Specifically, the connecting plate 14 on the periphery of the base 4 connects the rotating ring 5 to the base 4, allowing the rotating ring 5 to rotate along the base 4. Before use, the ventilation pipes can be connected to the air inlet 6 and the air outlet 7 on the rotating ring 5 respectively. By injecting gas into the air inlet 6, the gas enters the interior of the rotating ring 5 and flows into the air chamber 15 through the air inlet 17. The air chamber 15 then sends the gas to each air pipe 13, and during exhaust, the gas is drawn out from the air outlet 7, effectively controlling the input and output of gas inside the expansion block 2. A sealing ring is provided around the connecting plate 14 to prevent gas from being discharged from the connection between the rotating ring 5 and the connecting plate 14. Thus, during use, the rotating ring 5 can be rotated to adjust the air inlet 6 and the air outlet 7 to a suitable direction, facilitating connection with external pipes.

[0019] The side surface of the connecting plate 14 is rotatably connected to the rotating ring 5. The upper surface of the base 3 is provided with a fixing hole 16. The end of the second base plate 11 near the expansion block 2 is threaded with a screw 18. The end of the screw 18 near the second base plate 11 is in contact with the expansion block 2. The end of the first base plate 8 near the expansion block 2 is threaded with a screw 19. The expansion block 2 and the clamping body 1 are located between the screw 19 and the first base plate 8.

[0020] Specifically, the base 3 is provided with a ring of fixing holes 16, and fixing components such as screws can be used to fix the base 3 to the required device through the fixing holes 16. At the same time, the first substrate 8 and the second substrate 11 are connected to the expansion block 2 by the second screw 19 and the first screw 18, respectively, and the second screw 19 can also fix the expansion block 2 onto the body 1.

[0021] Working principle: First, the device is fixed to the required equipment using screws and other components through the fixing holes 16 on the base 3. Before use, the external air pipe is connected to the air inlet 6 and air outlet 7 of the rotating ring 5. The rotating ring 5 can rotate along the base 4. The sealing ring around the connecting plate 14 ensures a seal, and the interface direction can be adjusted to adapt to the pipe. When fixing the workpiece, the gas enters the rotating ring 5 through the air inlet 6, flows into the air chamber 15 inside the base 4 through the air outlet 17 of the connecting plate 14, and is then transported to the inside of the expansion block 2 by the air pipe 13. High-pressure gas pushes the expansion block 2 to expand. At this time, the base plate 11 fixed to the expansion block 2 stretches the spring 10, which drives the sleeve 12 to slide along the slide rod 9 on the base plate 8, ensuring that the expansion block 2 expands radially and fits tightly against the inner hole of the workpiece for fixation. The base plates 8 and 11 are securely connected to the expansion block 2 by screws 19 and 18, respectively. Screw 19 also fixes the expansion block 2 to the clamping body 1. When the fixation is released, the high-pressure gas inside the expansion block 2 is sucked out from the air outlet 7. The spring 10 returns to its original position and pulls the base plate 11, causing the expansion block 2 to quickly contract and return to its original position, completing the release of the workpiece. The entire process achieves efficient and stable clamping action through the cooperation of air circuit control and mechanical limit.

[0022] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pneumatic expansion block chuck, characterized in that, include: A base (3) is fixedly connected to a clamping body (1) on its upper surface. An expansion block (2) is fixedly connected to the inner side of the clamping body (1). A base plate (8) is fixedly connected to the inner side wall of the expansion block (2). A slide rod (9) is fixedly connected to the side surface of the base plate (8). A sleeve (12) is slidably connected to the side surface of the slide rod (9). A base plate (11) is fixedly connected to the end of the sleeve (12) away from the slide rod (9). A spring (10) is fixedly connected to the side surface of the base plate (11). The base (3) is fixedly connected to the base (4) on its lower surface. The base (4) is rotatably connected to the side surface of the base (4). The base (4) is fixedly connected to the side surface of the base (4). The side surface of the connecting plate (14) is provided with an air vent (17). The base (4) is provided with an air chamber (15) inside.

2. The pneumatic expansion block chuck according to claim 1, characterized in that, An air inlet (6) is fixedly connected to the side surface of the rotating ring (5), and an air outlet (7) is fixedly connected to the side surface of the rotating ring (5).

3. A pneumatic expansion block chuck according to claim 1, characterized in that, The side surface of the connecting plate (14) is rotatably connected to the rotating ring (5), and the upper surface of the base (3) is provided with a fixing hole (16).

4. A pneumatic expansion block chuck according to claim 1, characterized in that, An air pipe (13) is fixedly connected to the upper surface of the base (3), and the end of the air pipe (13) away from the base (3) extends through the expansion block (2) into the interior of the expansion block (2).

5. A pneumatic expansion block chuck according to claim 4, characterized in that, The vent (17) is connected to the air chamber (15), and the end of the air chamber (15) away from the vent (17) is connected to the trachea (13).

6. A pneumatic expansion block chuck according to claim 1, characterized in that, The end of the spring (10) away from the second substrate (11) is fixedly connected to the first substrate (8), and the end of the second substrate (11) away from the sleeve (12) is fixedly connected to the expansion block (2).

7. A pneumatic expansion block chuck according to claim 1, characterized in that, The second substrate (11) is threaded with a screw (18) at one end near the expansion block (2), and the screw (18) is attached to the expansion block (2) at one end near the second substrate (11).

8. A pneumatic expansion block chuck according to claim 1, characterized in that, The first substrate (8) is threaded with a second screw (19) at one end near the expansion block (2), and the expansion block (2) and the clamping body (1) are located between the second screw (19) and the first substrate (8).

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