Pneumatic pneumatic chuck

Abstract

The utility model discloses a pneumatic jet chuck which comprises a mounting disc, a clamping mechanism and a gas circuit structure. An unlocking cavity is formed in the mounting disc, and a clamping mechanism is arranged in the unlocking cavity. And a gas circuit structure communicated with the unlocking cavity is arranged in the mounting disc. The air channel structure comprises an unlocking air channel, one end of the unlocking air channel communicates with the unlocking cavity, and an unlocking air inlet is formed in the other end of the unlocking air channel. By controlling the high-pressure gas entering the unlocking gas channel, the chuck can quickly lock or unlock the part blank, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic clamping technology, specifically a pneumatic air-jet chuck. Background Technology

[0002] In the process of machining part blanks using CNC machine tools, fixtures are typically used to fix the blanks on the worktable so that the machine tool can perform further machining. Conventional rigid clamping fixtures generally hold the blanks by using set screws for pressure control or screw threads. These fixtures suffer from low automation, cumbersome use, and inconsistent clamping performance. This negatively impacts the efficiency of part blank machining. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a pneumatic jet-driven chuck.

[0004] The technical solution of this utility model is as follows: A pneumatic jet chuck includes a mounting plate, a clamping mechanism, and a pneumatic passage structure. The mounting plate has an unlocking cavity inside, and the clamping mechanism is located inside the unlocking cavity. The mounting plate also has a pneumatic passage structure communicating with the unlocking cavity. The pneumatic passage structure includes an unlocking air passage, one end of which communicates with the unlocking cavity, and the other end of which has an unlocking air inlet.

[0005] Furthermore, the top surface of the mounting plate is provided with multiple positioning bosses that mate with the blanks, and the positioning bosses are symmetrically distributed on the top surface of the mounting plate.

[0006] Furthermore, the clamping mechanism includes a piston ring and a ball bearing holder. The ball bearing holder is fixedly connected to the mounting plate, and its side surface has multiple evenly spaced circular grooves, each containing a ball bearing. The piston ring is elastically connected to the mounting plate, and its inner side near the ball bearing has an inner groove that mates with the ball bearing.

[0007] Furthermore, multiple evenly distributed springs are provided on the circumferential direction of the top surface of the piston ring. The top end of the spring contacts the inner top surface of the unlocking cavity, and the bottom end contacts the piston ring.

[0008] Furthermore, a second rubber ring is provided on the inner side of the piston ring near the ball bearing holder, and a first rubber ring is provided on the outer side near the unlocking cavity.

[0009] Furthermore, the gas path structure also includes independent cleaning and detection gas paths. Neither the cleaning nor the detection gas paths are connected to the unlocking gas path.

[0010] Furthermore, the clamping mechanism has an inner cavity for fitting the blank, with the top of the cavity communicating with the outside and multiple air holes at the bottom. One end of the cleaning air passage is connected to the inner cavity through the air hole, and the other end has a cleaning air inlet. The top surface of the mounting plate has multiple fixing blocks, and the mounting plate has air-jet cleaning air passages corresponding to the fixing blocks. The top end of the air-jet cleaning air passage is connected to the cleaning air jet hole on the fixing block, and the bottom end is connected to the cleaning air passage.

[0011] Furthermore, the mounting plate has multiple evenly distributed positioning surfaces, each with a gas detection nozzle. One end of the gas detection air passage is connected to the gas detection nozzle, and the other end has a gas detection air inlet.

[0012] Compared with existing technologies, the advantages of this invention are as follows: by controlling the high-pressure gas introduced into the unlocking air inlet, the clamping mechanism inside the mounting plate clamps or unlocks the part blank. This improves the automation level of fixing the part blank, enabling rapid fixing or unlocking of the part blank; it is also convenient to use and improves work efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0015] Figure 2 This is a cross-sectional schematic diagram of the airway unlocking mechanism of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the air detection airway of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the clean airway of this utility model;

[0018] Figure 5 This is a schematic diagram of the clamping mechanism of this utility model.

[0019] The components include: 1. Mounting plate; 2. Air passage structure; 3. Clamping mechanism; 11. Positioning boss; 12. Positioning surface; 13. Unlocking cavity; 14. Fixing block; 121. Air detection nozzle; 141. Cleaning nozzle; 142. Air spray cleaning passage; 21. Unlocking inlet; 22. Cleaning inlet; 23. Air detection inlet; 211. Unlocking passage; 221. Cleaning passage; 231. Air detection passage; 31. Piston ring; 32. Spring; 33. Steel ball holder; 34. Steel ball; 311. First rubber ring; 312. Second rubber ring; 313. Inner groove; 331. Circular groove; 332. Inner cavity; 333. Air hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] The specific embodiments of this utility model will now be described with reference to the accompanying drawings:

[0022] like Figures 1-5 As shown, a pneumatic chuck includes a mounting plate 1, a clamping mechanism 3, and a pneumatic passage structure 2. The top surface of the mounting plate 1 has multiple positioning bosses 11 for mating with workpieces, symmetrically distributed on the top surface of the mounting plate 1. The workpiece can quickly determine its relative position to the mounting plate 1 via the positioning bosses 11. The mounting plate 1 has an unlocking cavity 13 inside, and the clamping mechanism 3 is located inside the unlocking cavity 13. The mounting plate 1 also has a pneumatic passage structure 2 communicating with the unlocking cavity 13. The pneumatic passage structure 2 includes an unlocking air passage 211, one end of which communicates with the unlocking cavity 13, and the other end has an unlocking air inlet 21. By controlling the high-pressure gas entering the unlocking air inlet 21, the locking or unlocking state of the clamping mechanism 3 is controlled, achieving rapid clamping or unlocking of the workpiece and improving work efficiency.

[0023] The clamping mechanism 3 includes a piston ring 31 and a ball holder 33. The ball holder 33 is fixedly connected to the mounting plate 1. Multiple evenly spaced circular grooves 331 are provided on the circumferential side of the ball holder 33, and each groove 331 contains a ball 34. The piston ring 31 is elastically connected to the mounting plate 1. An inner groove 313 is provided on the inner side of the piston ring 31 near the ball 34 to accommodate the ball 34. Multiple evenly distributed springs 32 are provided on the circumferential side of the top surface of the piston ring 31. The top ends of the springs 32 contact the inner top surface of the unlocking cavity 13, and the bottom ends contact the piston ring 31. After high-pressure gas is introduced into the unlocking inlet 21, the piston ring 31 compresses the spring 32 under the pressure of the gas, causing the steel ball 34 to fall from the circular groove 331 into the inner groove 313, thereby unlocking the part for discharge. When high-pressure gas is introduced into the unlocking inlet 21, the unlocking chamber 13 is balanced with the external air pressure. The piston ring 31 moves under the action of the spring 32, and the steel ball 34 enters the circular groove 331 from the inner groove 313, clamping the part blank. A second rubber ring 312 is provided on the inner side of the piston ring 31 near the steel ball holder 33, and a first rubber ring 311 is provided on the outer side near the unlocking chamber 13. The first rubber ring 311 and the second rubber ring 312 improve the sealing between the piston ring 31 and the steel ball holder 33 and the inner wall of the unlocking chamber 13, ensuring the sensitivity of the piston ring 31 to changes in air pressure.

[0024] The air path structure 2 also includes independent cleaning air passages 221 and air detection air passages 231. Neither the cleaning air passage 221 nor the air detection air passage 231 is connected to the unlocking air passage 211. The clamping mechanism 3 has an inner cavity 332 that mates with the blank. The top of the inner cavity 332 is connected to the outside, and the bottom has multiple air holes 333. One end of the cleaning air passage 221 is connected to the inner cavity 332 through the air hole 333, and the other end has a cleaning air inlet 22. The top surface of the mounting plate 1 has multiple fixing blocks 14, and the mounting plate 1 has air-jet cleaning air passages 142 at the positions corresponding to the fixing blocks 14. The top end of the air-jet cleaning air passage 142 is connected to the cleaning air jet hole 141 on the fixing block 14, and the bottom end is connected to the cleaning air passage 221. High-pressure gas is introduced into the cleaning air inlet 22. The gas enters the inner cavity 332 and the cleaning air inlet 142 along the air jet cleaning air passage 142, and finally sprays out from the air hole 333 and the cleaning air jet hole 141. This blows and cleans the part blank that extends into the inner cavity 332 and the side near the top surface of the mounting plate 1, preventing iron slag and oil stains from remaining on the surface of the part blank and ensuring the accuracy of the chuck's repeatable positioning.

[0025] The mounting plate 1 has multiple evenly distributed positioning surfaces 12, each with a gas detection nozzle 121. One end of the gas detection passage 231 is connected to the gas detection nozzle 121, and the other end has a gas detection inlet 23. When the part blank is mounted on the mounting plate 1 but not yet locked, high-pressure gas is introduced into the gas detection inlet 23. The high-pressure gas enters the gas detection nozzle 333 through the gas detection passage 231, cleaning the oil and dust from the surface of the part blank and ensuring the accuracy of repeated positioning. When the part blank is locked, the bottom surface of the part blocks the top of the gas detection nozzle, preventing the high-pressure gas from being ejected. The air pressure in the gas detection passage 231 enters a pressure-holding state and reaches a stable air pressure value. The change in air pressure in the gas detection passage 231 is detected by a digital display air pressure switch, thereby determining whether the chuck is in a locked or unlocked state.

[0026] The working principle of this utility model is as follows: the part blank is quickly positioned on the mounting plate 1 by the positioning boss 11, high pressure gas is introduced into the unlocking air inlet 21, the piston ring 31 moves upward, and the steel ball 34 moves into the inner groove 313 to facilitate the matching of the part blank with the inner cavity 332; after the unlocking air inlet 21 stops supplying gas, the air pressure in the unlocking cavity 13 is balanced with the external air pressure. At this time, the piston ring 31 moves downward under the elastic action of the spring 32, and the steel ball 34 returns to the circular groove 331 and jams part of the part blank into the inner cavity 332.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An air-jet aerodynamic chuck, characterized by: The system includes a mounting plate (1), a clamping mechanism (3), and an air passage structure (2). The mounting plate (1) has an unlocking cavity (13) inside, and the clamping mechanism (3) is located inside the unlocking cavity (13). The mounting plate (1) has an air passage structure (2) communicating with the unlocking cavity (13). The air passage structure (2) includes an unlocking air passage (211), one end of which communicates with the unlocking cavity (13), and the other end has an unlocking air inlet (21). The clamping mechanism (3) includes a piston ring (31) and a ball holder (33); the ball holder (33) is fixedly connected to the mounting plate (1), and the side of the ball holder (33) is provided with a plurality of evenly spaced circular grooves (331), and the circular grooves (331) are provided with balls (34); the piston ring (31) is elastically connected to the mounting plate (1), and the inner side of the piston ring (31) near the ball (34) is provided with an inner groove (313) that matches the ball (34).

2. The aerodynamic chuck of claim 1, wherein: The top surface of the mounting plate (1) is provided with a plurality of positioning bosses (11) that match the blanks, and the positioning bosses (11) are symmetrically distributed on the top surface of the mounting plate (1).

3. The aerodynamic gas-spewing chuck of claim 1, wherein: The piston ring (31) has a plurality of evenly distributed springs (32) on its top surface in the circumferential direction. The top end of the spring (32) contacts the inner top surface of the unlocking cavity (13), and the bottom end contacts the piston ring (31).

4. The aerodynamic gas-spewing chuck of claim 1, wherein: The piston ring (31) has a second rubber ring (312) on its inner side near the steel ball holder (33), and a first rubber ring (311) on its outer side near the unlocking cavity (13).

5. The aerodynamic gas-spewing chuck of claim 1, wherein: The air passage structure (2) also includes a cleaning air passage (221) and a gas detection air passage (231) that are independent of each other; neither the cleaning air passage (221) nor the gas detection air passage (231) is connected to the unlocking air passage (211).

6. The aerodynamic chuck of claim 5, wherein: The clamping mechanism (3) has an inner cavity (332) for fitting the blank. The top of the inner cavity (332) is connected to the outside, and the bottom is provided with multiple air holes (333). One end of the cleaning air passage (221) is connected to the inner cavity (332) through the air hole (333), and the other end is provided with a cleaning air inlet (22). The top surface of the mounting plate (1) is provided with multiple fixing blocks (14). The mounting plate (1) is provided with an air jet cleaning air passage (142) corresponding to the position of the fixing block (14). The top end of the air jet cleaning air passage (142) is connected to the cleaning air jet hole (141) on the fixing block (14), and the bottom end is connected to the cleaning air passage (221).

7. The aerodynamic chuck of claim 5, wherein: The mounting plate (1) is provided with a plurality of evenly distributed positioning surfaces (12), each of which is provided with a gas detection nozzle (121); one end of the gas detection air passage (231) is connected to the gas detection nozzle (121), and the other end is provided with a gas detection air inlet (23).

Images