Novel front-mounted pneumatic chuck

Abstract

The utility model relates to the technical field of chuck devices, in particular to a novel front-mounted pneumatic chuck which comprises a front-mounted pneumatic chuck body, four independent air cylinder power sources are arranged in the front-mounted pneumatic chuck body, clamping jaws are driven, the four clamping jaws are in pairwise linkage and are automatically centered, mutual interference actions are avoided, and the purposes of high efficiency and high precision are achieved. After the clamping jaw assembly I passes through the induction check valve in the gas path, the pressure maintaining of the gas path is realized, and the pressure maintaining time can be more than 12 hours, so that a product is not influenced by sudden gas cut-off during processing; when air flow enters the lower air cylinder seat component and pushes a piston in a first clamping cylinder body through air pressure, the air flow flows to a second clamping cylinder body to push a piston in the second clamping cylinder body, the piston drives a long connecting rod and a short connecting rod to pull a short cylindrical rack and a long cylindrical rack to pass through a synchronous gear, and therefore the clamping jaw is driven to start reciprocating motion. The two sets of clamping jaws move linearly towards the center of the chuck at the same time to clamp a workpiece, so that double-transmission clamping can be achieved, and the workpiece is automatically aligned to the center of the chuck.

Description

Technical Field

[0001] The utility model relates to the technical field of chuck devices, in particular to a novel front-mounted pneumatic chuck. Background Art

[0002] The chuck is a mechanical device used to clamp the workpiece on the machine tool. It is a machine tool accessory that uses the radial movement of the movable jaws evenly distributed on the chuck body to clamp and position the workpiece. The chuck is generally composed of three parts: the chuck body, the movable jaws and the jaw drive mechanism. The chuck body has a minimum diameter of 65 mm and a maximum diameter of 1500 mm. There is a through hole in the center to allow the workpiece or bar to pass through; the back has a cylindrical or short conical structure, which is directly or through a flange connected to the end of the machine tool spindle. The chuck is usually installed on lathes, external cylindrical grinders and internal cylindrical grinders. It can also be used in conjunction with various indexing devices for milling machines and drilling machines.

[0003] The linkage structure of the current front-mounted pneumatic chucks is relatively complex, and the multi-link transmission is not consistent and synchronous enough. On the other hand, due to the excessively complex structure, the components are prone to reduced precision and frequent parts failures in the long-term use of the components! There are too many complex transmission structures on the market, and the internal space of the chuck is very small. In the narrow chuck space, high-requirement mechanical performance must be configured.

[0004] In view of this, we propose a new type of front-mounted pneumatic chuck. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a novel front-mounted pneumatic chuck.

[0006] The technical solution of the utility model is:

[0007] A novel front-mounted pneumatic chuck comprises a front-mounted pneumatic chuck body, a clamping jaw assembly 1 is installed at the front end of the front-mounted pneumatic chuck body, a clamping jaw assembly 2 is installed at the rear end of the clamping jaw assembly 1, the clamping jaw assembly 1 comprises: a gear linkage seat component, a roller component, a hexagonal flat-end set screw, a short cylindrical rack, a cylinder base, and an O-ring, a gear linkage seat component is installed on the inner side of the clamping jaw assembly 1, a short cylindrical rack is meshed and connected at the bottom of the gear linkage seat component, a hexagonal flat-end set screw is installed on the side of the short cylindrical rack, a roller component is installed at the front end of the short cylindrical rack, and a long cylindrical rack is meshed and connected at the top of the gear linkage seat component.

[0008] As a preferred technical solution, a cylinder base is installed below the short cylindrical rack, and an O-ring is installed on the side of the cylinder base.

[0009] As a preferred technical solution, the clamping jaw assembly 2 includes: a long clamping barrel mounting base, a short clamping barrel mounting base, and an upper cylinder seat component. The long clamping barrel mounting base is installed on the side of the clamping jaw assembly 2, a short clamping barrel mounting base is provided below the long clamping barrel mounting base, an upper cylinder seat component is installed on the left side of the short clamping barrel mounting base, a clamping cylinder body is installed on the side of the upper cylinder seat component, a piston is provided on the side of the clamping barrel, and a roller clamping jaw is installed on the side of the piston.

[0010] As a preferred technical solution, a long-distance clamp mounting base is installed on the outer side of the upper cylinder seat component, a sliding sleeve is installed on the inner side of the long-distance clamp mounting base, and a hexagon socket head screw is provided at the rear end of the sliding sleeve.

[0011] As a preferred technical solution, a standard spring washer is installed on the side of the hexagon socket head screw, and a lower cylinder seat component is installed on the outer side of the sliding sleeve.

[0012] As a preferred technical solution, an internally threaded cylindrical pin is installed on the side of the lower cylinder seat component, and a short-distance clamp mounting base is opened inside the lower cylinder seat component.

[0013] As a preferred technical solution, a chuck base component is installed on the outer side of the short-spacing collet mounting base.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model has four built-in independent cylinder power sources to drive the clamping jaws, so that the four clamping jaws are linked in pairs and automatically centered without interfering with each other's movements, thereby achieving high efficiency and high precision. After the clamping jaw assembly is assembled, the induction check valve in the air circuit is passed through to realize air circuit pressure maintenance, and the pressure maintenance time can be as long as more than 12 hours, so that the product processing will not be affected by sudden air failure. When the air flow enters the lower cylinder seat component, the air pressure pushes the piston in the first clamping cylinder body, and the air flow flows to the second clamping cylinder body to push the piston in the second clamping cylinder body, and the pistons are driven respectively. The long connecting rod and the short connecting rod pull the short cylindrical rack and the long cylindrical rack through the synchronous gear, thereby driving the clamping jaws to start reciprocating motion, so that the two groups of clamping jaws simultaneously move linearly toward the center of the chuck to clamp the workpiece, and in this way, double-transmission clamping can be achieved, and the workpiece is automatically aligned with the center of the chuck.

[0016] 2. The utility model pushes the piston by airflow entering the clamping cylinder body, so that the long connecting rod and the short connecting rod on the piston drive the cylindrical rack 1, and the cylindrical rack 2 is linked by the synchronous gear to make the long connecting rod and the short connecting rod work synchronously, and the roller clamping jaw 1 installed on the long connecting rod and the short connecting rod starts to move linearly toward the center of the chuck after the above series of actions, and the working principle of the roller clamping jaw 2 is that the clamping cylinder body 1 and the clamping cylinder body 2 are provided with an air circuit interconnection device, and the clamping cylinder body 2 starts to work at the same time as the clamping cylinder body starts to work, so that the two groups of clamping jaws can achieve synchronous clamping and automatic centering, and the accuracy is also greatly improved under the influence of this structure. The cylinder body's air circuit interconnection self-locking device and the double cylindrical rack and the piston directly drive the clamping jaw to achieve the purpose of clamping the workpiece, and the clamping action is generated. At the same time, the clamping work is synchronized and concentric through the synchronous gear structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the front-mounted pneumatic chuck of the utility model;

[0018] Figure 2 This is a schematic diagram of the appearance component structure of the utility model;

[0019] Figure 3 This is a structural schematic diagram of a clamping jaw assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the second clamping jaw assembly of the utility model.

[0021] In the figure: 1. Front-mounted pneumatic chuck body; 11. Chuck base component; 12. Lower cylinder seat component; 13. Internal threaded cylindrical pin; 14. Hexagon socket head screw; 15. Standard spring washer; 16. Short-distance clamping cylinder mounting base; 17. Long-distance clamping cylinder mounting base; 18. Sliding sleeve; 2. Clamping jaw assembly one; 22. Gear linkage seat component; 25. Roller component; 26. Hexagon socket flat-end set screw; 27. Short cylindrical rack; 28. Cylinder base; 29. ​​O-ring; 212. Long cylindrical rack; 3. Clamping jaw assembly two; 31. Clamping cylinder body; 32. Long clamping cylinder mounting base; 33. Piston; 34. Roller clamping jaw; 37. Short clamping cylinder mounting base; 312. Upper cylinder seat component. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] See also Figures 1 to 4 , the utility model provides a technical solution:

[0025] A novel front-mounted pneumatic chuck comprises a front-mounted pneumatic chuck body 1, a clamping jaw assembly 2 is installed at the front end of the front-mounted pneumatic chuck body 1, a clamping jaw assembly 2 is installed at the rear end of the clamping jaw assembly 2, the clamping jaw assembly 2 comprises: a gear linkage seat component 22, a roller component 25, an inner six flat end set screw 26, a short cylindrical rack 27, a cylinder base 28, and an O-ring 29, a gear linkage seat component 22 is installed on the inner side of the clamping jaw assembly 2, a short cylindrical rack 27 is meshed and connected at the bottom of the gear linkage seat component 22, a side of the short cylindrical rack 27 is installed with an inner six flat end set screw 26, a front end of the short cylindrical rack 27 is installed with a roller component 25, a long cylindrical rack 212 is meshed and connected at the top of the gear linkage seat component 22, a cylinder base 28 is installed at the bottom of the short cylindrical rack 27, and an O-ring 29 is installed on the side of the cylinder base 28.

[0026] It should be added that, by building in four independent cylinder power sources to drive the clamping jaws, the four clamping jaws can be automatically centered in pairs without interfering with each other's movements, thereby achieving high efficiency and high precision. After the clamping jaw assembly 2, the induced check valve in the air circuit is used to achieve air circuit pressure maintenance, and the pressure maintenance time can be as long as more than twelve hours, so that the product processing will not be affected by sudden gas interruption. When the air flow enters the lower cylinder seat component 12, the air pressure pushes the piston 33 in the clamping cylinder body 31, and the air flow flows to the second clamping cylinder body 31 to push the piston 33 in the clamping cylinder body 31. The piston 33 drives the long connecting rod and the short connecting rod to pull the short cylindrical rack 27 and the long cylindrical rack 212 through the synchronous gear, thereby driving the clamping jaws to start reciprocating motion, so that the two sets of clamping jaws simultaneously move linearly toward the center of the chuck to clamp the workpiece, and in this way, double-drive clamping can be achieved, and the workpiece is automatically aligned with the center of the chuck.

[0027] As a preferred embodiment of the present invention, the clamping jaw assembly 2 3 includes: a long clamping barrel mounting base 32, a short clamping barrel mounting base 37, and an upper cylinder seat component 312. The long clamping barrel mounting base 32 is installed on the side of the clamping jaw assembly 2 3, a short clamping barrel mounting base 37 is provided below the long clamping barrel mounting base 32, an upper cylinder seat component 312 is installed on the left side of the short clamping barrel mounting base 37, a clamping cylinder body 31 is installed on the side of the upper cylinder seat component 312, a piston 33 is provided on the side of the clamping cylinder body 31, a roller clamping jaw 34 is installed on the side of the piston 33, a long-distance clamping barrel mounting base 17 is installed on the outer side of the upper cylinder seat component 312, a sliding sleeve 18 is installed on the inner side of the long-distance clamping barrel mounting base 17, and a hexagon socket head screw 14 is provided at the rear end of the sliding sleeve 18.

[0028] It is worth mentioning that by the air flow entering the clamping cylinder 31, the piston 33 is pushed, so that the long connecting rod and the short connecting rod on the piston 33 drive the short cylindrical rack 27, and the long cylindrical rack 212 is linked through the synchronous gear to make the long connecting rod and the short connecting rod work synchronously, and the roller clamp 34 installed on the long connecting rod and the short connecting rod begins to move linearly toward the center of the chuck after the above series of actions.

[0029] As a preferred embodiment of the present invention, a standard spring washer 15 is installed on the side of the hexagon socket head screw 14, a lower cylinder seat component 12 is installed on the outer side of the sliding sleeve 18, an internally threaded cylindrical pin 13 is installed on the side of the lower cylinder seat component 12, a short-spacing clamp mounting base 16 is opened inside the lower cylinder seat component 12, and a chuck base component 11 is installed on the outer side of the short-spacing clamp mounting base 16.

[0030] During specific use, an air path interconnection device is provided through the clamping cylinder 311 and the clamping cylinder 312. When the clamping cylinder 31 starts working, the clamping cylinder 312 also works at the same time, so that the two sets of jaws can achieve synchronous clamping and automatic centering, and the accuracy is also greatly improved under the influence of this structure. The air path interconnection self-locking device of the cylinder body and the double cylindrical rack and piston 33 directly drive the jaws to clamp the workpiece, and the clamping action is generated. At the same time, the clamping work is synchronized and concentric through the synchronous gear structure.

[0031] When a new front-mounted pneumatic chuck of the utility model is used, firstly, the four independent cylinder power sources are built in to drive the clamping jaws, so that the four clamping jaws are linked and automatically centered in pairs, and the movements do not interfere with each other, so as to achieve high efficiency and high precision. After the clamping jaw assembly 2, the induction check valve in the air circuit is used to realize air circuit pressure maintenance, and the pressure maintenance time can be as long as more than twelve hours, so that the product processing will not be affected by sudden air failure. When the air flow enters the lower cylinder seat component 12, the air pressure pushes the piston 33 in the clamping cylinder body 31, and at the same time, the air flow flows to the second clamping cylinder body 31 to push the piston 33 in the clamping cylinder body 31, and the piston 33 drives the long connecting rod and the short connecting rod to pull the short cylindrical rack 27 and the long cylindrical rack 212 through the synchronous gear, thereby driving the clamping jaws to start reciprocating motion, so that the two groups of clamping jaws simultaneously move linearly toward the center of the chuck to clamp the workpiece, and in this way, double-drive clamping can be achieved. The workpiece is automatically aligned with the center of the chuck, and the air flow enters the clamping cylinder 31 to push the piston 33, so that the long connecting rod and the short connecting rod on the piston 33 drive the short cylindrical rack 27, and the long cylindrical rack 212 is linked by the synchronous gear to enable the long connecting rod and the short connecting rod to work synchronously, and the roller clamp 34 installed on the long connecting rod and the short connecting rod begins to move linearly toward the center of the chuck after the above series of actions, and the clamping cylinder 31 and the clamping cylinder 31 are provided with an air circuit interconnection device. When the clamping cylinder 31 starts to work, the clamping cylinder 31 also works at the same time, so that the two groups of clamps can achieve synchronous clamping and automatic centering, and the accuracy is also greatly improved under the influence of this structure. The cylinder body's air circuit interconnection self-locking device and the double cylindrical rack and the piston 33 directly drive the clamping jaws to achieve the purpose of clamping the workpiece, and the clamping action is generated. At the same time, the clamping work is synchronized and concentric through the synchronous gear structure.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel front-mounted pneumatic chuck, comprising a front-mounted pneumatic chuck body (1), characterized in that: The front end of the front-mounted pneumatic chuck body (1) is equipped with a clamping jaw assembly (2), and the rear end of the clamping jaw assembly (2) is equipped with a clamping jaw assembly (3). The clamping jaw assembly (2) includes: a gear linkage seat component (22), a roller component (25), a hexagonal flat-end set screw (26), a short cylindrical rack (27), a cylinder base (28), and an O-ring (29). The inner side of the clamping jaw assembly (2) is equipped with a gear linkage seat component (22), the lower part of the gear linkage seat component (22) is meshedly connected with a short cylindrical rack (27), the side of the short cylindrical rack (27) is equipped with a hexagonal flat-end set screw (26), the front end of the short cylindrical rack (27) is equipped with a roller component (25), and the upper part of the gear linkage seat component (22) is meshedly connected with a long cylindrical rack (212).

2. A novel front-mounted pneumatic chuck as claimed in claim 1, characterized in that: A cylinder base (28) is installed below the short cylindrical rack (27), and an O-type sealing ring (29) is installed on the side of the cylinder base (28).

3. A novel front-mounted pneumatic chuck as claimed in claim 1, characterized in that: The second clamping jaw assembly (3) includes: a long clamping barrel mounting base (32), a short clamping barrel mounting base (37), and an upper cylinder seat component (312). The side of the second clamping jaw assembly (3) is installed with a long clamping barrel mounting base (32), a short clamping barrel mounting base (37) is provided below the long clamping barrel mounting base (32), an upper cylinder seat component (312) is installed on the left side of the short clamping barrel mounting base (37), a clamping cylinder body (31) is installed on the side of the upper cylinder seat component (312), a piston (33) is provided on the side of the clamping cylinder body (31), and a roller clamping jaw (34) is installed on the side of the piston (33).

4. A novel front-mounted pneumatic chuck as claimed in claim 3, characterized in that: A long-distance clamp mounting base (17) is installed on the outer side of the upper cylinder seat component (312), a sliding sleeve (18) is installed on the inner side of the long-distance clamp mounting base (17), and a hexagon socket head screw (14) is provided at the rear end of the sliding sleeve (18).

5. A novel front-mounted pneumatic chuck as claimed in claim 4, characterized in that: A standard spring washer (15) is installed on the side of the hexagon socket head screw (14), and a lower cylinder seat component (12) is installed on the outer side of the sliding sleeve (18).

6. A novel front-mounted pneumatic chuck as claimed in claim 5, characterized in that: An internally threaded cylindrical pin (13) is installed on the side of the lower cylinder seat component (12), and a short-distance clamp mounting base (16) is opened inside the lower cylinder seat component (12).

7. A novel front-mounted pneumatic chuck as claimed in claim 6, characterized in that: A chuck base component (11) is installed on the outer side of the short-distance chuck mounting base (16).

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