CN112677076A

CN112677076A - Clamping and fixing device for machining mechanical parts

Info

Publication number: CN112677076A
Application number: CN202011493190.7A
Authority: CN
Inventors: 张秀亚
Original assignee: Ningbo Jinri Machine Tool Co ltd
Current assignee: Ningbo Jinri Machine Tool Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-04-20

Abstract

The invention relates to the technical field of machine manufacturing, and discloses a clamping and fixing device for machining a mechanical part, which comprises a machining table, wherein an installation support is arranged on the outer side of the machining table, an equipment main body is arranged on the outer side of the installation support, a sliding rod is rotatably connected to the middle of the equipment main body, and a sliding block is slidably connected to a rod body of the sliding rod. This centre gripping fixing device for machine parts machining, through after grip block and part butt, the slider continues to remove, then the spring beam is shortened by the extrusion, prevent excessive centre gripping, its inside switch module butt, the electrorheological fluids circular telegram is changed into solid state by the suspension state, thereby the guide arm can not continue to remove and block the sawtooth, the ring gear can't continue to rotate, then the rack can't continue to remove with the grip block, thereby make the centre gripping more firm, when the part is irregularly shaped, the spring beam compression degree of all directions is different, consequently, can carry out the centre gripping to irregularly shaped part and fix.

Description

Clamping and fixing device for machining mechanical parts

Technical Field

The invention relates to the technical field of machine manufacturing, in particular to a clamping and fixing device for machining a mechanical part.

Background

The mechanical manufacturing refers to industries for producing various power machines, chemical machines, hoisting and transporting machines, textile machines, machine tools, instruments, meters and other mechanical equipment, and mechanical products produced by the mechanical manufacturing include components, sub-components, parts and the like. In the machining process of mechanical parts, the parts need to be clamped and fixed firstly, and then cutting machining, heat treatment, surface treatment and the like are carried out, the clamping and fixing device of the existing machining equipment needs manual operation to clamp the parts, so that the workload is increased, the clamping force is not easy to control, the situation that the parts are excessively clamped and are not stably clamped can occur, and the parts can be damaged or the machining effect can be influenced; in addition, the general clamping and fixing devices can only clamp parts with regular shapes, when parts with irregular shapes need to be machined, the devices cannot stably clamp the parts, and the parts can be deviated due to machine vibration during machining, so that machining failure is caused, and material waste is caused.

Aiming at the defects of the prior art, the invention provides the clamping and fixing device for machining the mechanical part, which has the advantages of automatically clamping the part, being suitable for parts with irregular shapes and being more stable in clamping, and solves the problems that a common clamping and fixing device is small in application range and needs manual operation.

Disclosure of Invention

Technical scheme (I)

In order to realize the purposes of automatically clamping parts, being suitable for parts with irregular shapes and being more stable in clamping, the invention provides the following technical scheme: the utility model provides a centre gripping fixing device for machine part processing, includes the processing platform, the outside of processing platform is provided with the installing support, the outside of installing support is provided with equipment main part, the middle part of equipment main part is rotated and is connected with the slide bar, sliding connection has the slider on the body of rod of slide bar, the both sides of slider all articulate has first connecting rod, the one end that the slider was kept away from to first connecting rod is rotated and is connected with the knee lever, the one end that first connecting rod was kept away from to the knee lever is rotated and is connected with the second connecting rod, the one end that the knee lever was kept away from to the second connecting rod is rotated and is connected with the metal block, the one end middle part fixedly connected with installation piece that the installing support was kept.

Preferably, the metal block is connected with the equipment main body in a sliding mode, a first spring is arranged between the metal block and the mounting block, and the curved rod is connected with the equipment main body in a rotating mode through the transfer block.

Preferably, one end of the sliding block, which is close to the mounting bracket, is fixedly connected with a spring rod, and one end of the spring rod, which is far away from the sliding block, is fixedly connected with a rack.

Preferably, one end of the rack close to the processing table is fixedly connected with a clamping block, two sides of the rack are meshed with gear rings, and the gear rings are rotatably connected with the mounting bracket.

Preferably, the inner ring of the gear ring is provided with sawteeth, the surface of the mounting bracket is fixedly connected with a cylinder body, and the cylinder body is positioned inside the gear ring.

Preferably, the inner wall of the cylinder is connected with a guide rod in a sliding manner, and electrorheological fluid is filled in the cylinder and consists of composite metal hydroxide and insulating mineral oil.

Preferably, a second spring is arranged between the tail of the guide rod and the cylinder body, and the head of the guide rod is meshed and connected with the sawteeth.

Preferably, a switch assembly is arranged inside the spring rod and electrically connected with the electrorheological fluid.

(II) advantageous effects

Compared with the prior art, the invention provides a clamping and fixing device for machining mechanical parts, which has the following beneficial effects:

1. this centre gripping fixing device for machine part processing attracts the metal block like the direction that is close to the installation piece through the electro-magnet and slides, and the metal block passes through second connecting rod, curved bar and first connecting rod drive slider and slides to the direction that is close to the part along the slide bar, and the slider passes through spring lever drive rack synchronous motion, and rack drive ring gear rotates, and meanwhile rack drive grip block is close to the part gradually to the effect that the automation carries out the centre gripping to the part has been reached.

2. This centre gripping fixing device for machine parts machining, through after grip block and part butt, the slider continues to remove, then the spring beam is shortened by the extrusion, prevent excessive centre gripping, its inside switch module butt, the electrorheological fluids circular telegram is changed into solid state by the suspension state, thereby the guide arm can not continue to remove and block the sawtooth, the ring gear can't continue to rotate, then the rack can't continue to remove with the grip block, thereby make the centre gripping more firm, when the part is irregularly shaped, the spring beam compression degree of all directions is different, consequently, can carry out the centre gripping to irregularly shaped part and fix.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic view of a related structure of a ring gear of the present invention;

FIG. 4 is a schematic view of the structure of area A in FIG. 2 according to the present invention;

FIG. 5 is a schematic view of the structure of the area B in FIG. 2 according to the present invention;

FIG. 6 is a schematic view of the structure of the area C in FIG. 3 according to the present invention.

In the figure: 1. a processing table; 2. mounting a bracket; 3. an apparatus main body; 4. a slide bar; 5. a slider; 6. a first link; 7. a curved bar; 8. a second link; 9. a metal block; 10. mounting blocks; 11. an electromagnet; 12. a first spring; 13. a spring lever; 14. a rack; 15. a clamping block; 16. a ring gear; 17. saw teeth; 18. a barrel; 19. a guide bar; 20. electrorheological fluid; 21. a second spring; 22. a switch assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a clamping and fixing device for machining a mechanical part includes a machining table 1, a mounting bracket 2 is disposed on an outer side of the machining table 1, an apparatus main body 3 is disposed on an outer side of the mounting bracket 2, a sliding rod 4 is rotatably connected to a middle portion of the apparatus main body 3, a slider 5 is slidably connected to a rod body of the sliding rod 4, first connecting rods 6 are hinged to two sides of the slider 5, a curved rod 7 is rotatably connected to one end of each first connecting rod 6, which is far away from the slider 5, a second connecting rod 8 is rotatably connected to one end of the curved rod 7, a metal block 9 is rotatably connected to one end of the second connecting rod 8, which is far away from the curved rod 7, a mounting block 10 is fixedly connected to a middle portion of one end of the apparatus main body 3, which is far away; the metal block 9 is connected with the device body 3 in a sliding mode, a first spring 12 is arranged between the metal block 9 and the mounting block 10, and the curved rod 7 is connected with the device body 3 in a rotating mode through a transfer block.

One end of the sliding block 5 close to the mounting bracket 2 is fixedly connected with a spring rod 13, and one end of the spring rod 13 far away from the sliding block 5 is fixedly connected with a rack 14; one end of the rack 14 close to the processing table 1 is fixedly connected with a clamping block 15, two sides of the rack 14 are respectively connected with a gear ring 16 in a meshed manner, and the gear ring 16 is rotatably connected with the mounting bracket 2; the inner ring of the gear ring 16 is provided with sawteeth 17, the surface of the mounting bracket 2 is fixedly connected with a cylinder 18, and the cylinder 18 is positioned inside the gear ring 16; the inner wall of the cylinder 18 is connected with a guide rod 19 in a sliding way, the inside of the cylinder 18 is filled with electrorheological fluid 20, and the electrorheological fluid 20 consists of composite metal hydroxide and insulating mineral oil; a second spring 21 is arranged between the tail part of the guide rod 19 and the cylinder body 18, and the head part of the guide rod 19 is meshed and connected with the sawteeth 17; the spring rod 13 is internally provided with a switch assembly 22, and the switch assembly 22 is electrically connected with the electro-rheological fluid 20.

The working process and principle are as follows: the part to be machined is placed at a machining table 1, an external power supply is started to electrify an electromagnet 11, the electromagnet 11 is enhanced in magnetism to attract a metal block 9 to slide in a direction close to an installation block 10, a first spring 12 is compressed, the metal block 9 drives a curved rod 7 through a second connecting rod 8 to rotate by taking a transfer block as a base point, the curved rod 7 drives a first connecting rod 6 to move so as to drive a sliding block 5 to slide in a direction close to the part along a sliding rod 4, the sliding block 5 drives a rack 14 to synchronously move through a spring rod 13, the rack 14 drives a gear ring 16 to rotate, and at the moment, a switch assembly 22 is in an off state, so that an electrorheological fluid 20 is not electrified and is in a suspension state, a saw tooth 17 is matched with the second spring 21 to drive a guide rod 19 to reciprocate along the inner wall of a cylinder 18, and meanwhile, the rack 14 drives a.

After the clamping block 15 is abutted to a part, the sliding block 5 continues to move, the spring rod 13 is extruded and shortened to prevent excessive clamping, the switch assembly 22 in the clamping block is abutted, the circuit is closed, the electrorheological fluid 20 is electrified from a suspension state to a solid state, the guide rod 19 cannot continue to move, therefore, the guide rod 19 blocks the saw teeth 17, the saw teeth 17 cannot continue to rotate, namely, the gear ring 16 cannot continue to rotate, therefore, the rack 14 cannot continue to move, the position of the clamping block 15 is fixed, and the clamping is more stable; when the parts are irregular, the degree of compression of the spring rod 13 in each direction is different after each clamping block 15 abuts against the parts, and the rack 14 and the clamping block 15 are fixed in position by the above working principle, so that the parts with irregular shapes can be clamped and fixed.

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

Claims

1. The utility model provides a centre gripping fixing device for machine part processing, includes processing platform (1), its characterized in that: the outer side of the processing table (1) is provided with a mounting bracket (2), the outer side of the mounting bracket (2) is provided with an equipment main body (3), the middle part of the equipment main body (3) is rotationally connected with a sliding rod (4), the rod body of the sliding rod (4) is connected with a sliding block (5) in a sliding way, two sides of the sliding block (5) are respectively hinged with a first connecting rod (6), one end of the first connecting rod (6) far away from the sliding block (5) is rotatably connected with a curved rod (7), one end of the curved lever (7) far away from the first connecting rod (6) is rotatably connected with a second connecting rod (8), one end of the second connecting rod (8) far away from the curved bar (7) is rotatably connected with a metal block (9), the device is characterized in that the middle of one end, far away from the mounting support (2), of the device main body (3) is fixedly connected with a mounting block (10), and electromagnets (11) are arranged on two sides of the mounting block (10).

2. The clamping and fixing device for machining a mechanical part according to claim 1, wherein: the metal block (9) is connected with the equipment main body (3) in a sliding mode, a first spring (12) is arranged between the metal block (9) and the installation block (10), and the curved rod (7) is connected with the equipment main body (3) in a rotating mode through the transfer block.

3. The clamping and fixing device for machining a mechanical part according to claim 1, wherein: one end of the sliding block (5) close to the mounting bracket (2) is fixedly connected with a spring rod (13), and one end of the spring rod (13) far away from the sliding block (5) is fixedly connected with a rack (14).

4. The clamping fixture for machining a mechanical part as set forth in claim 3, wherein: one end fixedly connected with grip block (15) that rack (14) is close to processing platform (1), the both sides of rack (14) all mesh and are connected with ring gear (16), ring gear (16) are connected with installing support (2) rotation.

5. The clamping fixture for machining a mechanical part as set forth in claim 4, wherein: the inner ring of ring gear (16) is provided with sawtooth (17), the fixed surface of installing support (2) is connected with barrel (18), barrel (18) are located the inside of ring gear (16).

6. The clamping fixture for machining a mechanical part as set forth in claim 5, wherein: the inner wall of the cylinder body (18) is connected with a guide rod (19) in a sliding mode, electrorheological fluid (20) is filled in the cylinder body (18), and the electrorheological fluid (20) is composed of composite metal hydroxide and insulating mineral oil.

7. The clamping fixture for machining a mechanical part as set forth in claim 6, wherein: a second spring (21) is arranged between the tail part of the guide rod (19) and the cylinder body (18), and the head part of the guide rod (19) is meshed and connected with the sawteeth (17).

8. The clamping fixture for machining a mechanical part as set forth in claim 3, wherein: the spring rod (13) is internally provided with a switch assembly (22), and the switch assembly (22) is electrically connected with the electrorheological fluid (20).