CN113523608A

CN113523608A - Side-hanging hollow rear chuck

Info

Publication number: CN113523608A
Application number: CN202110905812.0A
Authority: CN
Inventors: 江渊
Original assignee: Changzhou Runyuan Precision Machinery Technology Co ltd
Current assignee: Changzhou Runyuan Precision Machinery Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-10-22

Abstract

The invention relates to the field of clamping equipment, in particular to a side-hung type hollow rear chuck. The invention improves the rotating mechanism, changes the original deep groove ball bearing into the cross roller bearing, so that the rotating mechanism can be directly sleeved in the middle of the cylinder outer cover of the pneumatic mechanism, omits the original bearing seat additionally arranged for mounting the bearing, realizes the integration of the rotating mechanism and the pneumatic mechanism, greatly reduces the volume of the whole chuck, particularly obviously shortens the axial length, is convenient for transportation and installation, and reduces the cost.

Description

Side-hanging hollow rear chuck

Technical Field

The invention relates to the field of clamping equipment, in particular to a side-hung type hollow rear chuck.

Background

Laser cutting is the most important application technology in the laser processing industry, and has the characteristics of high speed, high precision, no deformation of workpieces and the like, so that the laser cutting technology is widely applied to the fields of automobiles, rolling stock manufacturing, aviation, chemical engineering, light industry, electrical appliances, electronics, petroleum, metallurgy and the like. In recent years, laser cutting technology has developed rapidly, and the laser cutting technology has increased at a rate of 20% to 30% every year internationally. The wide application market of laser cutting processing and the rapid development of modern science and technology enable domestic and foreign science and technology workers to conduct continuous research on laser cutting processing technology, and the laser cutting technology is promoted to develop continuously forward.

Along with the increasing expansion of laser pipe cutting machine market, the use of air chuck is also more and more, but laser complete machine factory uses the air chuck generally to adopt deep groove ball bearing at present, and the bearing passes through the rear of bearing frame fixed connection cylinder mechanism, drives pneumatic mechanism through speed reducer and gear drive and rotates during the use, and whole length is great, and corresponding bulky influences whole and placing and greatly increased the cost.

Disclosure of Invention

In view of the above problems, the present invention aims to provide a side-hung hollow rear chuck with small volume and low production cost.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a chuck behind side-hung cavity, includes jack catch mechanism, pneumatic mechanism and slewing mechanism, jack catch mechanism fixes pneumatic mechanism is last, pneumatic mechanism is used for controlling jack catch mechanism and opens and shuts, and can rotate under the slewing mechanism drive, its characterized in that, slewing mechanism includes bearing, speed reducer and driven gear, the bearing housing is established the middle part outside of pneumatic mechanism, pneumatic mechanism fixed connection is on driven gear, and can rotate under the speed reducer drive.

In the above technical scheme, jack catch mechanism includes the chuck, what the symmetry was provided with two pairs of jack catch subassemblies on the chuck, the jack catch subassembly includes jack catch, slider and connecting rod, be equipped with two mutually perpendicular's shifting chute on the chuck, jack catch fixed connection is in on the slider, the slider dress is in the shifting chute, the both ends of connecting rod are connected respectively the slider with pneumatic mechanism is last.

In the technical scheme, the pneumatic mechanism comprises an air cylinder outer cover, a cylinder body, a front cover and a rear cover, wherein the cylinder body, the front cover and a cavity formed by the rear cover are internally provided with a piston rod, a piston matched with the cylinder body is sleeved on the piston rod, a sleeve is fixedly connected onto the front cover, one pair of connecting rods is connected onto the sleeve, the other pair of connecting rods is connected onto a hollow shaft in the middle of the piston rod, and an air guide hole communicated with an inner cavity of the pneumatic mechanism is formed in the rear cover.

In the technical scheme, the dust removal mechanism is further arranged and comprises an exhaust pipe and an air path distributor which are arranged in the piston rod, and an air inlet channel on the air path distributor is communicated with an air guide hole in the rear cover.

In the technical scheme, the rear end of the air channel distributor is fixedly connected with an anti-rotation plate which is in a zigzag shape.

In the technical scheme, the connecting rod comprises a rotating part and a connecting part, and an included angle of 90-180 degrees is formed between the rotating part and the connecting part.

In the technical scheme, the front end of the chuck is provided with a circular pressing plate, the circular pressing plate is in a quarter circle shape, the straight edge of the circular pressing plate exceeds the side edge of the moving groove but is not contacted, and the front end of the circular pressing plate is provided with a dustproof baffle.

In the above technical solution, the rotating mechanism includes a gear cover housing fixedly connected to the cylinder housing.

In the above technical solution, the bearing is a cross roller bearing.

In summary, compared with the conventional technical means, the technical scheme of the invention has the following beneficial effects:

the invention improves the rotating mechanism, changes the original deep groove ball bearing into the cross roller bearing, so that the rotating mechanism can be directly sleeved in the middle of the cylinder outer cover of the pneumatic mechanism, omits the original bearing seat additionally arranged for mounting the bearing, realizes the integration of the rotating mechanism and the pneumatic mechanism, greatly reduces the volume of the whole chuck, particularly obviously shortens the axial length, is convenient for transportation and installation, and reduces the cost.

Drawings

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

FIG. 2 is a schematic perspective view of FIG. 1 in another direction;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic sectional view A-A of FIG. 3;

FIG. 5 is a schematic cross-sectional view B-B of FIG. 3;

FIG. 6 is a schematic perspective view of the jaw assembly and pneumatic mechanism of the present invention;

FIG. 7 is a schematic cross-sectional view of FIG. 6;

FIG. 8 is a schematic cross-sectional view in another orientation of FIG. 6;

FIG. 9 is a schematic perspective view of a crossed roller bearing according to the present invention;

the reference numbers are as follows: a jaw mechanism 100; a chuck 110; a moving groove 111; a circular press plate 112; a jaw assembly 120; a claw 121; a slider 122; a connecting rod 123; a rotating portion 124; a joining portion 125; a pneumatic mechanism 200; a cylinder housing 210; a cylinder block 220; a front cover 230; a sleeve 231; a rear cover 240; an air-guide hole 241; a piston rod 250; a hollow shaft 251; a piston 260; a rotation mechanism 300; a bearing 310; a speed reducer 320; a gear cover housing 321; a driven gear 330; a dust removal mechanism 500; an exhaust tube 510; an air path distributor 520; the rotation prevention plate 600.

Detailed Description

The invention is further illustrated with reference to the following figures:

as shown in fig. 1 to 9, a side-hung hollow rear chuck includes a jaw mechanism 100, a pneumatic mechanism 200 and a rotating mechanism 300, the jaw mechanism 100 is fixed on the pneumatic mechanism 200, the pneumatic mechanism 200 is used for controlling the jaw mechanism 100 to open and close and can rotate under the driving of the rotating mechanism 300, the rotating mechanism 300 includes a cross roller bearing 310, a speed reducer 330 and a driven gear 320 thereof, the cross roller bearing 310 is sleeved outside the middle of the pneumatic mechanism 200, the pneumatic mechanism 200 is fixedly connected to the driven gear 320 and can rotate under the driving of the speed reducer 330, an original deep groove is changed into a ball bearing cross roller bearing, so that the rotating mechanism can be directly sleeved on the middle of a cylinder housing of the pneumatic mechanism, and an original bearing seat additionally arranged for mounting a bearing is omitted.

As shown in fig. 1, 6, 7 and 8, the jaw mechanism 100 includes a chuck 110, two pairs of jaw assemblies 120 are symmetrically disposed on the chuck 110, each jaw assembly 120 includes a jaw 121, a slider 122 and a connecting rod 123, two moving grooves 111 perpendicular to each other are disposed on the chuck 110, the jaws 121 are fixedly connected to the slider 122, the slider 122 is mounted in the moving grooves 111, and two ends of the connecting rod 123 are respectively connected to the slider 122 and the pneumatic mechanism 200, so that compared with a conventional L-shaped jaw, the overhang length is very short, and thus, the clamping force and the clamping precision are high. The claw seat is made of 42CrMo low-carbon alloy steel material, and final heat treatment is performed by nitriding treatment, so that the size, the roughness and the form and position tolerance are ensured.

As shown in fig. 4, the pneumatic mechanism 200 includes an air cylinder housing 210, a cylinder body 220, a front cover 230 and a rear cover 240 in the air cylinder housing 210, a piston rod 250 is disposed in a cavity formed by the cylinder body 220, the front cover 230 and the rear cover 240, a piston 260 engaged with the cylinder body 220 is sleeved on the piston rod 250, a sleeve 231 is fixedly connected to the front cover 230, one pair of connecting rods 123 is connected to the sleeve 221, the other pair of connecting rods 123 is connected to a hollow shaft 251 in the middle of the piston rod 250, and an air vent 241 communicated with an inner cavity of the pneumatic mechanism 200 is opened on the rear cover 240.

The relative motion part in the pneumatic mechanism 200 has the requirements of roughness and form and position tolerance, the roughness is not more than Ra1.6, the coaxiality is not more than 0.02, and the accuracy of partial movement of the pneumatic mechanism 200 is ensured; the outer circle of the gear cover shell 330 also has the requirements of roughness and form and position tolerance, the roughness is not more than Ra1.6, the coaxiality is not more than 0.02, and the gear cover shell is used for alignment and adjustment of the whole assembly of the rear chuck, and the concentricity of the front chuck and the rear chuck is used in the same height time.

As shown in fig. 5, a dust removing mechanism 500 is further provided, the dust removing mechanism 500 includes an air exhaust tube 510 and an air path distributor 520 arranged in the piston rod 250, and an air inlet channel on the air path distributor 520 is communicated with the air guide hole 241 on the rear cover 240.

As shown in fig. 2, the rear end of the air passage distributor 520 is fixedly connected with an anti-rotation plate 600, the anti-rotation plate 600 is zigzag-shaped, and the other end of the anti-rotation plate 600 is fixedly connected to the gear cover housing 321.

As shown in fig. 7 and 8, the connecting rod 123 includes a rotating portion 124 and a connecting portion 125, and an angle between the rotating portion 124 and the connecting portion 125 is 90-180 degrees.

As shown in fig. 1, a circular pressing plate 112 is arranged at the front end of the chuck 110, the circular pressing plate 112 is in a quarter circle shape, a straight edge of the circular pressing plate 112 exceeds the side edge of the moving groove 111 but is not contacted with the side edge of the moving groove, a dustproof baffle is arranged at the front end of the circular pressing plate 112, the circular pressing plate 112 exceeds the side edge of the moving groove 111, so that the originally straight moving groove 111 is changed into a T-shaped groove, the slider 122 is prevented from being separated from the moving groove 111, the dustproof baffle has a good dustproof effect, dust is prevented from falling into the pneumatic mechanism 200, meanwhile, the clamping jaw mechanism 100 is limited, the clamping jaw mechanism 100 is protected, the dustproof baffle is welded by a metal plate, and the dustproof baffle is mainly used for preventing dust generated by cutting, and is prevented from falling into the T-shaped groove to cause clamping pause; the cross bow plate on the dustproof baffle is mainly used for positioning and supporting the machined pipe fitting.

As shown in fig. 6, 7 and 8, the rotating mechanism 300 includes a gear housing 321 fixedly attached to the cylinder housing 210.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a chuck behind side-hung cavity, includes jaw mechanism (100), pneumatic mechanism (200) and slewing mechanism (300), jaw mechanism (100) are fixed pneumatic mechanism (200) are last, pneumatic mechanism (200) are used for controlling jaw mechanism (100) and open and shut, and can slewing mechanism (300) drive down and rotate, a serial communication port, slewing mechanism (300) include bearing (310), speed reducer (320) and driven gear (330) thereof, bearing (310) cover is established the middle part outside of pneumatic mechanism (200), pneumatic mechanism (200) fixed connection is on driven gear (320), and can rotate under speed reducer (330) drive.

2. The side-hung type hollow rear chuck according to claim 1, wherein the jaw mechanism (100) comprises a chuck (110), two pairs of jaw assemblies (120) are symmetrically arranged on the chuck (110), each jaw assembly (120) comprises a jaw (121), a sliding block (122) and a connecting rod (123), two moving grooves (111) which are perpendicular to each other are formed in the chuck (110), the jaws (121) are fixedly connected to the sliding block (122), the sliding block (122) is arranged in the moving grooves (111), and two ends of the connecting rod (123) are respectively connected to the sliding block (122) and the pneumatic mechanism (200).

3. The side-hung hollow rear chuck according to claim 2, wherein the pneumatic mechanism (200) comprises a cylinder housing (210), a cylinder body (220), a front cover (230) and a rear cover (240) which are arranged in the cylinder housing (210), a piston rod (250) is arranged in a cavity formed by the cylinder body (220), the front cover (230) and the rear cover (240), a piston (260) matched with the cylinder body (220) is sleeved on the piston rod (250), a sleeve (231) is fixedly connected to the front cover (230), one pair of connecting rods (123) is connected to the sleeve (231), the other pair of connecting rods (123) is connected to a hollow shaft (251) in the middle of the piston rod (250), and an air guide hole (331) communicated with the inner cavity of the pneumatic mechanism (200) is formed in the rear cover (240).

4. The side-hung hollow rear chuck according to claim 1, characterized in that a dust removing mechanism (500) is further provided, the dust removing mechanism (500) comprises an air suction pipe (510) and an air path distributor (520) which are arranged in the piston rod (250), and an air inlet channel on the air path distributor (520) is communicated with an air guide hole (241) on the rear cover (240).

5. The side-hung hollow rear chuck according to claim 4, wherein an anti-rotation plate (600) is fixedly connected to the rear end of the air channel distributor (520), and the anti-rotation plate (600) is zigzag-shaped.

6. The side hanging type hollow rear chuck according to claim 2, characterized in that the connecting rod (123) comprises a rotating part (124) and a joint part (125), and the rotating part (124) and the joint part (125) form an included angle of 90-180 degrees.

7. The side-hung hollow rear chuck according to claim 1, characterized in that a circular pressing plate (112) is arranged at the front end of the chuck (110), the circular pressing plate (112) is in a shape of a quarter circle, the straight edge of the circular pressing plate (112) exceeds the side edge of the moving groove (111) but is not in contact with the moving groove, and a dustproof baffle is arranged at the front end of the circular pressing plate (112).

8. The side-hung hollow rear chuck according to claim 3, wherein the rotating mechanism (300) comprises a gear housing case (330) fixedly connected to the cylinder housing (210).

9. The side-hung hollow rear chuck according to claim 1, wherein the bearing (310) is a cross roller bearing.