CN219325015U

CN219325015U - Three-jaw chuck

Info

Publication number: CN219325015U
Application number: CN202222277191.9U
Authority: CN
Inventors: 朱玉双
Original assignee: Individual
Current assignee: Shenyang Guanghui Machinery Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-07-11
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to the technical field of three-jaw chucks and discloses a three-jaw chuck, which comprises an assembly frame, wherein an air dispersing groove and an air inlet cavity are formed in the assembly frame, the air dispersing groove and the air inlet cavity are mutually communicated, three sliding grooves which are uniformly distributed are formed in the bottom of the assembly frame, a supporting rod assembly close to the center of the assembly frame is arranged in the sliding grooves, the other end of the supporting rod assembly is connected with a sliding block, and the sliding block is connected in the sliding grooves in a sliding manner. According to the utility model, gas can be conveniently injected into the gas dispersing groove at any time through the gas transmission pipe and the gas inlet cavity, so that the gas can simultaneously enter the three gas inlet pipes under the cooperation of the corresponding communication cavity, and the gas can push the connecting pipe and the connecting rod to extend under the sealing effect, so that the three clamping jaws can be pushed to synchronously move through the sliding block and the connecting plate, the structure is simplified, the clamping operation is convenient, and meanwhile, the device is more convenient to overhaul and maintain in daily life.

Description

Three-jaw chuck

Technical Field

The utility model relates to the technical field of three-jaw chucks, in particular to a three-jaw chuck.

Background

At present, three-jaw chucks are quite various in types and mostly driven by gears, and as each three-jaw chuck is provided with three clamping jaws, each clamping jaw is located on different radial directions, but when clamping objects, three clamping jaws need to synchronously and simultaneously operate to achieve the effect of clamping workpieces, although the prior art can achieve the technical effect, as the three clamping jaws are not driven on the same radial direction, the three clamping jaws are difficult to simultaneously drive by a linear transmission mechanism, so that the prior art is usually driven in a mode of matching a bevel gear shaft rod and a bevel gear disk, so that the effect of synchronously driving three clamping operations by one power source is achieved, but as tangential force and radial force exist during bevel gear driving, the bevel gear disk can only drive the bevel gear rod to rotate by radial force, and the tangential force is wasted, thereby causing the loss of power source energy consumption, and therefore, improvement is needed.

Moreover, for convenience in operation, three clamping jaws are usually driven to move simultaneously by one power source, which is more suitable for the regular workpiece, but three clamping jaws which move synchronously for the irregular workpiece cannot contact the workpiece at the same time, so that one or two clamping jaws contact the workpiece, and the other clamping jaw does not contact the workpiece, thereby reducing the clamping effect, and therefore, improvement is needed.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the three-jaw chuck, which has the advantages of small loss and stable clamping.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a three-jaw chuck, includes the assembly jig, the inside of assembly jig has been seted up and has been scattered the gas tank and advance the gas chamber, the gas tank that looses communicates with the gas chamber mutually, evenly distributed's three spout has been seted up to the bottom of assembly jig, the inside of spout is provided with the butt subassembly that is close to assembly jig center department, the other end of butt subassembly is connected with the slider, the slider slides and connects in the inside of spout, the other end of slider is connected with the connecting plate, the connecting plate joint is in the inside of assembly jig, the bottom of connecting plate is connected with the clamping jaw.

As a preferable technical scheme of the utility model, the supporting rod assembly comprises an air inlet pipe arranged in the sliding groove, the air inlet pipe is mutually communicated with the air dispersing groove through a communication cavity arranged in the assembling frame, a sealing sliding sleeve is sleeved in the air inlet pipe, a connecting pipe is sleeved in the sealing sliding sleeve, a sealing sliding block is sleeved in the connecting pipe, a connecting rod is connected to the left side of the sealing sliding block, and the other end of the connecting rod extends to the outer part of the connecting pipe and is fixedly connected with the sliding block.

As an optimal technical scheme of the utility model, an assembly shaft is welded at the top of the assembly frame, a hoisting frame is clamped outside the assembly shaft, the hoisting frame is fixedly connected with the assembly frame through bolts, and the top of the air inlet cavity penetrates through the assembly shaft and is fixedly connected with an air pipe.

As a preferable technical scheme of the utility model, a mounting frame is arranged at one side of the bottom of the connecting plate, which is far away from the assembly frame, a positioning slide bar is movably sleeved in the mounting frame, and two ends of the positioning slide bar penetrate through the mounting frame.

As a preferable technical scheme of the utility model, one end of the positioning slide bar far away from the assembly frame is connected with an anti-falling block, one end of the positioning slide bar close to the assembly frame is fixedly connected with the clamping jaw, and a buffer spring positioned between the clamping jaw and the mounting frame is arranged outside the positioning slide bar.

As a preferable technical scheme of the utility model, a limit groove is formed in the bottom of the connecting plate, a limit block is connected to the top of the clamping jaw, and the limit block is connected to the inside of the limit groove in a sliding manner.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, gas can be conveniently injected into the gas dispersing groove at any time through the gas transmission pipe and the gas inlet cavity, so that the gas can simultaneously enter the three gas inlet pipes under the cooperation of the corresponding communication cavity, and the gas can push the connecting pipe and the connecting rod to extend under the sealing effect, so that the three clamping jaws can be pushed to synchronously move through the sliding block and the connecting plate, the structure is simplified, the clamping operation is convenient, and meanwhile, the device is more convenient to overhaul and maintain in daily life.

2. According to the utility model, the three clamping jaws can be simultaneously driven to be close to the workpiece under the cooperation of the air dispersing groove through the supporting rod assembly and the connecting plate so as to achieve the clamping effect, but the clamping jaw firstly contacted with the workpiece can not influence the movement of the clamping jaw secondly contacted with the workpiece under the buffering action of the buffer spring, so that the effect of conveniently clamping the irregular workpiece can be achieved, and meanwhile, the clamping stability is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the bottom structure of the present utility model;

FIG. 3 is a cross-sectional view of the front face of the present utility model;

FIG. 4 is an enlarged partial schematic view of FIG. 3A;

fig. 5 is a partial schematic view of a buffer spring of the present utility model.

In the figure: 1. an assembly frame; 2. a gas dispersion groove; 3. an air inlet cavity; 4. a clamping jaw; 5. a chute; 6. a lever assembly; 61. an air inlet pipe; 62. a communication chamber; 63. sealing the sliding sleeve; 64. a connecting pipe; 65. a sealing slide block; 66. a connecting rod; 7. a slide block; 8. a connecting plate; 9. assembling a shaft; 10. hoisting the frame; 11. a mounting frame; 12. positioning a slide bar; 13. an anti-falling block; 14. a buffer spring; 15. a gas pipe; 16. a limit groove; 17. and a limiting block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 5, the utility model provides a three-jaw chuck, which comprises an assembly frame 1, wherein an air dispersing groove 2 and an air inlet cavity 3 are formed in the assembly frame 1, the air dispersing groove 2 and the air inlet cavity 3 are communicated with each other, three sliding grooves 5 which are uniformly distributed are formed in the bottom of the assembly frame 1, a supporting rod assembly 6 which is close to the center of the assembly frame 1 is arranged in the sliding groove 5, the other end of the supporting rod assembly 6 is connected with a sliding block 7, the sliding block 7 is connected with the inner part of the sliding groove 5 in a sliding manner, the other end of the sliding block 7 is connected with a connecting plate 8, the connecting plate 8 is clamped in the assembly frame 1, and the bottom of the connecting plate 8 is connected with a clamping jaw 4;

the gas can be injected into the three supporting rod assemblies 6 through the gas dispersing grooves 2, and the gas in the three supporting rod assemblies 6 can be simultaneously extracted, so that the gas pushes the connecting pipe 64 and the connecting rod 66 to extend under the sealing effect, and the three clamping jaws 4 can be pushed to synchronously move through the sliding blocks 7 and the connecting plates 8, so that the structure is simplified, the clamping operation is convenient, and meanwhile, the gas pushing device is more convenient to overhaul and maintain in daily life.

The supporting rod assembly 6 comprises an air inlet pipe 61 arranged in the sliding groove 5, the air inlet pipe 61 is communicated with the air dispersing groove 2 through a communication cavity 62 formed in the assembling frame 1, a sealing sliding sleeve 63 is sleeved in the air inlet pipe 61, a connecting pipe 64 is sleeved in the sealing sliding sleeve 63, a sealing sliding block 65 is sleeved in the connecting pipe 64, a connecting rod 66 is connected to the left side of the sealing sliding block 65, and the other end of the connecting rod 66 extends to the outer portion of the connecting pipe 64 and is fixedly connected with the sliding block 7;

under the cooperation of the sealing sliding sleeve 63 and the sealing sliding block 65, a sealed cavity is formed inside the supporting rod assembly 6, and then the injected and extracted gas can repeatedly expand and contract the air inlet pipe 61, the connecting pipe 64 and the sealing sliding block 65, so that the effect of moving the sliding block 7 is achieved.

Wherein, the top welding of assembly jig 1 has assembly shaft 9, and the outside joint of assembly shaft 9 has hoist and mount frame 10, and hoist and mount frame 10 passes through bolt and assembly jig 1 fixed connection, and assembly shaft 9 and fixedly connected with gas-supply pipe 15 are run through at the top of air inlet 3.

Wherein, a mounting frame 11 is arranged at one side of the bottom of the connecting plate 8 far away from the assembly frame 1, a positioning slide bar 12 is movably sleeved in the mounting frame 11, and two ends of the positioning slide bar 12 penetrate through the mounting frame 11;

the movement of the positioning slide rod 12 can be limited through the mounting frame 11, so that the positioning slide rod 12 can reciprocate under the driving of the clamping jaw 4, and meanwhile, the clamping jaw 4 can compress the buffer spring 14 under the cooperation of the mounting frame 11 to change the elastic performance of the buffer spring.

One end of the positioning slide bar 12, which is far away from the assembly frame 1, is connected with an anti-falling block 13, one end of the positioning slide bar 12, which is close to the assembly frame 1, is fixedly connected with the clamping jaw 4, and a buffer spring 14 positioned between the clamping jaw 4 and the mounting frame 11 is arranged outside the positioning slide bar 12;

the positioning slide rod 12 can be ensured to slide left and right in the mounting frame 11 all the time under the cooperation of the clamping jaw 4 through the anti-falling block 13, so that the clamping jaw 4 can reciprocate under the elastic force recovery action of the buffer spring 14, and meanwhile, the compressed buffer spring 14 can store energy to be used as the extrusion force of the clamping jaw 4 for propping against a workpiece.

The bottom of the connecting plate 8 is provided with a limit groove 16, the top of the clamping jaw 4 is connected with a limit block 17, and the limit block 17 is glidingly connected to the inside of the limit groove 16;

the movement of the clamping jaw 4 can be limited under the cooperation of the limiting groove 16 and the limiting block 17, so that the clamping jaw can slide left and right along the bottom of the connecting plate 8, thereby ensuring accurate approaching or separating from a workpiece, ensuring firm clamping on the surface of the workpiece and improving the clamping stability.

The working principle and the using flow of the utility model are as follows:

firstly, the whole assembly frame 1 is connected with driving structures such as a mechanical arm and the like through an assembly shaft 9 and a lifting frame 10 so as to clamp a workpiece and then transfer, then a gas transmission pipe 15 is connected with a pumping mechanism, driving equipment enables the workpiece to be clamped, then gas can be exchanged with the inside of a supporting rod assembly 6 from the outside through gas transmission pipe 15, a gas inlet cavity 3, a gas dispersing groove 2 and a communicating cavity 62 through gas transmission and gas extraction of the pumping mechanism, so that a plurality of supporting rod assemblies 6 can synchronously stretch and retract, the stretching and retracting of the supporting rod assemblies 6 can drive a connecting plate 8 to integrally move through a sliding block 7, and the movement of the connecting plate 8 can drive corresponding clamping jaws 4 to move through a mounting frame 11, a positioning sliding rod 12 and a buffer spring 14, thereby simultaneously driving three clamping jaws 4 to move;

when one or two clamping jaws 4 are in contact with the surface of the workpiece, and when the other two clamping jaws 4 are not in contact with the surface of the workpiece, the air supply is continued, so that the supporting rod assembly 6 is extended continuously, the other two clamping jaws 4 are further close to the workpiece to achieve the purpose of contacting the workpiece, and one or two clamping jaws 4 contacting the workpiece are continuously pushed by the connecting plate 8 through the mounting frame 11 and the buffer spring 14 to further clamp the workpiece, and meanwhile, the elastic recovery performance of the buffer spring 14 is increased, so that the workpiece is comprehensively clamped.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a three-jaw chuck, includes assembly jig (1), its characterized in that: the utility model discloses a novel assembly jig for the automobile, including assembly jig (1), including three slide groove (5), connecting plate (8), slider (7) are connected in the inside of slide groove (5) in the inside of having seted up of assembly jig (1), air groove (2) and inlet chamber (3) that looses, three spout (5) of evenly distributed have been seted up to the bottom of assembly jig (1), the inside of spout (5) is provided with and is close to support pole subassembly (6) of assembly jig (1) center department, the other end of supporting pole subassembly (6) is connected with slider (7), slider (7) slide and connect in the inside of spout (5), the other end of slider (7) is connected with connecting plate (8), the bottom of connecting plate (8) is connected with clamping jaw (4).

2. A three jaw chuck according to claim 1, wherein: the utility model provides a gas-distributing groove (2) is fixed in assembly frame (1), including installing in inside intake pipe (61) of spout (5), intake pipe (61) are through setting up in inside intercommunication chamber (62) of assembly frame (1) and gas-distributing groove (2) intercommunication each other, sealed sliding sleeve (63) have been cup jointed to the inside of intake pipe (61), connecting pipe (64) have been cup jointed to the inside of sealed sliding sleeve (63), sealed slider (65) have been cup jointed to the inside of connecting pipe (64), the left side of sealed slider (65) is connected with connecting rod (66), the other end of connecting rod (66) extends to the outside of connecting pipe (64) and with slider (7) rigid coupling.

3. A three jaw chuck according to claim 1, wherein: the top welding of assembly jig (1) has assembly shaft (9), the outside joint of assembly shaft (9) has hoist and mount frame (10), hoist and mount frame (10) pass through bolt and assembly jig (1) fixed connection, the top of chamber of admitting air (3) runs through assembly shaft (9) and fixedly connected with gas-supply pipe (15).

4. A three jaw chuck according to claim 1, wherein: one side of the bottom of the connecting plate (8) far away from the assembly frame (1) is provided with a mounting frame (11), the inside of the mounting frame (11) is movably sleeved with a positioning slide bar (12), and two ends of the positioning slide bar (12) penetrate through the mounting frame (11).

5. A three jaw chuck according to claim 4, wherein: one end of the positioning slide bar (12) far away from the assembly frame (1) is connected with an anti-falling block (13), one end of the positioning slide bar (12) close to the assembly frame (1) is fixedly connected with the clamping jaw (4), and a buffer spring (14) positioned between the clamping jaw (4) and the mounting frame (11) is arranged outside the positioning slide bar (12).

6. A three jaw chuck according to claim 1, wherein: limiting grooves (16) are formed in the bottoms of the connecting plates (8), limiting blocks (17) are connected to the tops of the clamping jaws (4), and the limiting blocks (17) are connected to the inside of the limiting grooves (16) in a sliding mode.