CN211192558U

CN211192558U - Electric chuck

Info

Publication number: CN211192558U
Application number: CN201921565755.0U
Authority: CN
Inventors: 赵广; 韩小鹏
Original assignee: Jinan Bodor Laser Co Ltd
Current assignee: Jinan Bodor Laser Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-08-07
Anticipated expiration: 2029-09-18

Abstract

The utility model provides an electric chuck, which relates to the laser cutting field, wherein a chuck main body and a chuck rotation driving device are arranged on a base; the shaft body is of a hollow cylindrical structure with openings at two ends, one end of the shaft body is provided with a rotating gear, and the rotating gear is connected with a chuck rotation driving device; the chuck transmission assembly comprises a synchronous disc, and the synchronous disc is arranged at one end of the shaft body, which is far away from the rotating gear; the mounting plate is mounted on the outer side of the synchronous disc, and the clamping jaws are movably mounted on the mounting plate; the chuck driving assembly is connected with the clamping jaw through the chuck transmission assembly, and the chuck driving assembly drives the clamping jaw to move through the chuck transmission assembly. The utility model discloses electric chuck can realize the electrodeless rotation of electric chuck and the synchronous of tubular product centre gripping and go on, and because clamping function and rotation function are relatively independent, avoided the problem that the big positioning accuracy of electric chuck positioning error is low. The utility model discloses laser pipe cutting machine makes tubular product can carry out the removal of multidimension degree to adapt to different operating modes.

Description

Electric chuck

Technical Field

The utility model belongs to the laser cutting field, concretely relates to electric chuck.

Background

In the laser cutting field, in order to facilitate cutting of the pipe, the pipe to be cut is generally required to be positioned by using a chuck, and then cutting operation is performed.

At present, most of power sources for clamping the chuck of the laser pipe cutting machine are pneumatic, and a clamping jaw is driven by a cylinder to clamp a pipe. Because the pipe infinitely rotates, the air source must enter the cylinder through the annular air delivery channel. The sealing of the gas transmission channel is very important, the sealing is dynamic sealing, pressure is kept in the cutting process, and the technical difficulty is high. Because of this, the sealing of the gas delivery passage becomes the largest failure point for the gas chuck.

Consequently, electric chuck has also appeared on the market to avoid the problem that the gas transmission passageway dynamic seal that uses pneumatic chuck to bring and pressurize, but current electric chuck positioning error is great, and positioning accuracy is low, is difficult to when realizing that tubular product infinitely rotatory, pinpoints, centre gripping tubular product.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electric chuck to solve electric chuck and be difficult to realize that the unlimited rotation of tubular product carries out the problem of pinpointing simultaneously.

The utility model provides an electric chuck, which comprises a chuck main body, a chuck rotation driving device and a base, wherein the chuck main body and the chuck rotation driving device are arranged on the base; the chuck body comprises a shaft body, a mounting plate, a chuck driving assembly, a chuck transmission assembly and a clamping jaw; the shaft body is of a hollow cylindrical structure with openings at two ends, a rotating gear is mounted at one end of the shaft body, and the rotating gear is connected with a chuck rotation driving device; the chuck transmission assembly comprises a synchronous disc, and the synchronous disc is arranged at one end of the shaft body, which is far away from the rotating gear; the mounting plate is mounted on the outer side of the synchronous disc, and the clamping jaws are movably mounted on the mounting plate; the chuck driving assembly is connected with the clamping jaw through the chuck transmission assembly, and the chuck driving assembly drives the clamping jaw to move through the chuck transmission assembly.

Further, chuck drive assembly includes motor reducer, pinion and sector gear, the pinion is installed on motor reducer's output shaft, pinion and sector gear meshing, the synchronization disc is provided with a plurality of flabellums, sector gear installs on the flabellum of synchronization disc.

Further, for the realization to the accurate centre gripping of tubular product, promote tubular product self-centering's precision, strengthen the dynamics and the degree of accuracy of centre gripping tubular product simultaneously, the synchronization disc includes first synchronization disc and second synchronization disc, first synchronization disc and second synchronization disc include two flabellums respectively, first synchronization disc and the crisscross setting of second synchronization disc, sector gear installs respectively on the flabellum of first synchronization disc and second synchronization disc.

In order to conveniently carry out the centre gripping to tubular product, guide rail and slide are installed to the outside of mounting panel, slide and guide rail sliding connection, the clamping jaw is installed on the slide, the slide is connected with chuck drive assembly.

Further, the shifting fork is rotatably installed between the mounting plate and the synchronous disc through a shifting fork mounting shaft, the shifting fork is of a v-shaped structure, the shifting fork mounting shaft is located at the tip end of the shifting fork, track rollers are respectively installed at two forking ends of the shifting fork, and waist-shaped holes matched with the track rollers are respectively formed in the sliding plate and the synchronous disc.

Further, for the convenience of carrying out rotary drive to the chuck main part, the rotating gear that the synchronization disc rotation arouses when subducing centre gripping tubular product simultaneously rotates the influence and realizes positive and negative two-way drive, chuck rotary drive device includes first servo motor, first speed reducer, first drive gear, fixing base and idler, the idler is rotatable to be installed on the fixing base, the idler meshes with first drive gear and rotating gear respectively, first servo motor is connected with first drive gear through first speed reducer.

Further, for eliminating reverse clearance, the chuck rotary driving device comprises a first flange plate, a first tensioning strip and a second tensioning strip, the first speed reducer is installed on the fixed seat through the first flange plate, the first tensioning strip is installed on the fixed seat, the first tensioning strip is connected with the first flange plate through a fastener, the second tensioning strip is installed on the edge of the base, and the second tensioning strip is tightly pressed against the fixed seat through the fastener. .

The utility model provides an electric chuck, through setting up both ends open-ended axis body structure, the messenger treats that the tubular product of processing can pass the axis body, the one end installation swing gear of axis body, swing gear can drive axis body and whole electric chuck with the cooperation of chuck rotation drive arrangement and carry out the rotation in a circumferential direction, through regulating and controlling the circumferencial direction location that can be convenient for carry out tubular product to chuck rotation drive arrangement, synchronization dish and mounting panel are installed to the other end of axis body, cooperation chuck drive assembly and chuck drive assembly's setting, it can be fixed by the clamping jaw centre gripping to make tubular product, realize the axial positioning of tubular product. The design can realize the synchronous operation of the stepless rotation of the electric chuck and the clamping of the pipe, and meanwhile, the clamping assembly clamps the pipe in an electric mode without the trouble of the sealing problem of the pneumatic chuck. Meanwhile, the rotary gear and the synchronous disc are respectively arranged at the two ends of the shaft body, so that the clamping function and the rotating function of the electric chuck are relatively independent and are not interfered with each other, and the problem of large positioning error and low positioning precision of the electric chuck caused by the complex structure of equipment is solved.

The utility model relates to a principle is reliable, and simple structure has very extensive application prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the three-dimensional structure of the electric chuck of the present invention.

Fig. 2 is a schematic view of the shaft body structure of the chuck body of the present invention.

Fig. 3 is a schematic perspective view of the chuck body according to the present invention (the right slide plate is omitted).

Fig. 4 is a schematic front view of the chuck body according to the present invention (with the mounting plate and the right slide plate omitted).

Fig. 5 is a schematic structural view of the chuck transmission assembly of the present invention.

Fig. 6 is a schematic structural view of the chuck rotation driving device of the present invention.

In the figure, 100, the chuck body;

110. a shaft body 111, a rotary gear;

120. mounting plate 121, guide rail 122, slide plate;

130. a chuck driving component 131, a motor reducer 132, a pinion 133, a sector gear,

140. a chuck transmission component 141, a first synchronous disc 142, a second synchronous disc 143, a shifting fork 144, a shifting fork mounting shaft 145 and a track roller;

150. a clamping jaw;

200. a chuck rotation driving device;

201. a first servo motor 202, a first speed reducer 203, a first tensioning strip 204, a first flange plate 205, a first driving gear 206, an idler gear 207, a fixed seat 208 and a second tensioning strip;

400. a base.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1, the power chuck includes a chuck body 100, a chuck rotation driving device 200, and a base 400, and the chuck body 100 and the chuck rotation driving device 200 are mounted on the base 400.

As shown in fig. 2 to 4, the chuck body 100 includes a shaft body 110, a mounting plate 120, a chuck driving assembly 130, a chuck driving assembly 140, and a clamping jaw 150; the shaft body 110 is a hollow cylindrical structure with two open ends, a rotating gear 111 is mounted at one end of the shaft body 110, and the rotating gear 111 is connected with the chuck rotation driving device 200.

The chuck transmission assembly 140 includes a synchronous disc installed at one end of the shaft body 110 far from the rotating gear 111; the mounting plate 120 is mounted on the outer side of the synchronous disc, and the clamping jaw 150 is movably mounted on the mounting plate 120; the chuck driving assembly 130 is connected with the clamping jaw 150 through the chuck transmission assembly 140, and the chuck driving assembly 130 drives the clamping jaw 150 to move through the chuck transmission assembly 140.

Chuck drive assembly 130 includes motor reducer 131, pinion 132 and sector gear 133, pinion 132 installs on motor reducer 131's output shaft, pinion 132 meshes with sector gear 133, the synchronization disc is provided with a plurality of flabellums, sector gear 133 is installed on the flabellum of synchronization disc. The motor reducer 131 is mounted on the mounting plate 120.

Further, in order to accurately clamp the pipe, improve the precision of automatic centering of the pipe, and simultaneously enhance the strength and accuracy of clamping the pipe, as shown in fig. 2-4, for example, two synchronization disks are respectively provided, specifically, the synchronization disks include a first synchronization disk 141 and a second synchronization disk 142, the synchronization disks are symmetrically provided with two fan blades along the radial direction of the shaft body 110, the first synchronization disk 141 and the second synchronization disk 142 are arranged in a staggered manner in the axial direction and the planar direction, and the sector gear 133 is respectively installed on the fan blades of the first synchronization disk 141 and the second synchronization disk 142, so as to avoid mutual interference between the first synchronization disk 141 and the second synchronization disk 142. In this embodiment, in order to increase the clamping force on the pipe, the chuck driving assemblies 130 are respectively and correspondingly disposed at two blades of the first synchronization disc 141, and if the chuck driving assembly 130 is selectively disposed at only one blade of the first synchronization disc 141, the first synchronization disc 141 can be driven.

The outer side of the mounting plate 120 is provided with a guide rail 121 and a sliding plate 122, the sliding plate 122 is slidably connected with the guide rail 121, the clamping jaw 150 is arranged on the sliding plate 122, and the sliding plate 122 is connected with the chuck transmission assembly 140.

Further, as shown in fig. 5, the chuck transmission assembly 140 includes a shift fork 143, a shift fork mounting shaft 144 and a track roller 145, the shift fork 143 is rotatably mounted between the mounting plate 120 and the synchronization disc through the shift fork mounting shaft 144, the shift fork 143 is of a v-shaped structure, the shift fork mounting shaft 144 is located at the tip of the shift fork 143, the track roller 145 is respectively mounted at two diverging ends of the shift fork 143, and the sliding plate 122 and the synchronization disc are respectively provided with a kidney-shaped hole matched with the track roller 145.

In addition, in order to adapt to the wide specification of the processed pipe by the client to the maximum extent, the chuck driving assembly 130 preferably adopts a servo motor, a worm gear speed reducer and a speed reducer flange, wherein the reduction ratio of the worm gear speed reducer is large, the self-locking function can be realized, and when a workpiece is clamped, the clamping force can be kept from disappearing even if the servo motor 1 is powered off.

The rabbets at the two ends of the speed reducer flange are eccentrically arranged (the rabbets at the two ends are not concentric), and the mounting position can be adjusted through the waist-shaped hole on the speed reducer flange, so that the meshing reverse gap of the pinion 132 can be adjusted, and the transmission precision is improved.

Specifically, the servo motor drives the worm and gear reducer to rotate, so as to drive the pinion 132 to rotate, so that the sector gear 133 meshed with the pinion 132 drives the synchronous disc to rotate, and as the synchronous disc is provided with the kidney-shaped hole matched with the track roller 145, when the synchronous disc rotates, the shifting fork 143 is driven to rotate, so that the track roller 145 at the other end of the shifting fork 143 pushes the sliding plate 122 to displace along the guide rail 121, and the clamping jaw 150 moves towards the direction close to or far away from the axis of the shaft body 110, thereby clamping or releasing the pipe.

Further, in order to facilitate the rotational driving of the chuck body 100, and simultaneously reduce the rotational influence of the rotating gear 111 caused by the rotation of the timing disc when the pipe is clamped, and achieve the forward and reverse bidirectional driving, the chuck rotational driving device 200 includes a first servo motor 201, a first speed reducer 202, a first driving gear 205, a fixed seat 207, and an idler 206, as shown in fig. 1 and 6, the idler 206 is rotatably mounted on the fixed seat 207, the idler 206 is respectively engaged with the first driving gear 205 and the rotating gear 111, and the first servo motor 201 is connected with the first driving gear 205 through the first speed reducer 202. The first speed reducer 202 is mounted on a fixed seat 207 through a first flange plate 204, the first tensioning strip 203 is mounted on the fixed seat 207, the first tensioning strip 203 is connected with the first flange plate 204 through a fastener, a reverse gap between a first driving gear 205 and an idler gear 206 is eliminated by tensioning the first flange plate 204, the second tensioning strip 208 is mounted on the edge of the base 400, the second tensioning strip 208 tightly props against the fixed seat 207 through the fastener, and a reverse gap between the idler gear 206 and a rotating gear 111 on the chuck body 100 is eliminated by tightly propping against the fixed seat 207.

Wherein, adopt idler 206 as the gear of middle transition to add the tensioning strip and cooperate, eliminate the reverse clearance between first chuck rotary driving device 200 and the chuck main part 100, improved the adaptation degree of tubular product clamping work and electric chuck rotation work, reduced electric chuck's circumferential direction location and axial positioning influence each other, guaranteed electric chuck's positioning accuracy.

To sum up, the utility model provides an electric chuck, through setting up both ends open-ended axis body 110 structure, the tubular product that makes to treat processing can pass axis body 110, the one end installation rotating gear 111 of axis body 110, rotating gear 111 can drive axis body 110 and whole electric chuck with the cooperation of chuck rotation driving device 200 and carry out circumferential direction, can be convenient for carry out the circumferencial direction location of tubular product through regulating and controlling chuck rotation driving device 200, synchronization disc and mounting panel 120 are installed to the other end of axis body 110, cooperation chuck drive assembly 130 and chuck drive assembly 140's setting, it can be fixed by the clamping jaw 150 centre gripping to make tubular product, realize the axial positioning of tubular product.

Meanwhile, the rotary gear 111 and the synchronous disc are respectively arranged at the two ends of the shaft body 110, so that the clamping function and the rotating function of the electric chuck are relatively independent and do not interfere with each other, and the problem of large positioning error and low positioning accuracy of the electric chuck caused by complex equipment structure is solved.

Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An electric chuck, characterized in that: the chuck comprises a chuck body (100), a chuck rotation driving device (200) and a base (400), wherein the chuck body (100) and the chuck rotation driving device (200) are arranged on the base (400);

the chuck body (100) comprises a shaft body (110), a mounting plate (120), a chuck driving assembly (130), a chuck transmission assembly (140) and a clamping jaw (150);

the shaft body (110) is of a hollow cylindrical structure with openings at two ends, a rotating gear (111) is mounted at one end of the shaft body (110), and the rotating gear (111) is connected with a chuck rotation driving device (200);

the chuck transmission assembly (140) comprises a synchronous disc, and the synchronous disc is arranged at one end of the shaft body (110) far away from the rotating gear (111);

the mounting plate (120) is mounted on the outer side of the synchronous disc, and the clamping jaw (150) is movably mounted on the mounting plate (120);

chuck drive assembly (130) are connected with clamping jaw (150) through chuck transmission assembly (140), chuck drive assembly (130) drive clamping jaw (150) through chuck transmission assembly (140) and remove.

2. The power chuck as set forth in claim 1, wherein: chuck drive assembly (130) include motor reducer (131), pinion (132) and sector gear (133), install on the output shaft of motor reducer (131) pinion (132), pinion (132) and sector gear (133) meshing, the synchronizing disk is provided with a plurality of flabellums, install on the flabellum of synchronizing disk sector gear (133).

3. The power chuck as set forth in claim 2, wherein: the synchronous disc comprises a first synchronous disc (141) and a second synchronous disc (142), the first synchronous disc (141) and the second synchronous disc (142) respectively comprise two fan blades, the first synchronous disc (141) and the second synchronous disc (142) are arranged in a staggered mode, and the sector gear (133) is respectively installed on the fan blades of the first synchronous disc (141) and the second synchronous disc (142).

4. The power chuck as set forth in claim 1, 2 or 3, wherein: guide rail (121) and slide (122) are installed to the outside of mounting panel (120), slide (122) and guide rail (121) sliding connection, clamping jaw (150) are installed on slide (122), slide (122) are connected with chuck transmission assembly (140).

5. The power chuck as set forth in claim 4, wherein: chuck drive assembly (140) are including shift fork (143), shift fork installation axle (144) and orbit gyro wheel (145), shift fork (143) are rotationally installed between mounting panel (120) and synchronization disc through shift fork installation axle (144), shift fork (143) are the v type structure, shift fork installation axle (144) are located the pointed end of shift fork (143), orbit gyro wheel (145) are installed respectively to two branch fork ends of shift fork (143), be provided with respectively on slide (122) and the synchronization disc with orbit gyro wheel (145) complex waist type hole.

6. The power chuck as set forth in claim 1, wherein: the chuck rotation driving device (200) comprises a first servo motor (201), a first speed reducer (202), a first driving gear (205), an idler wheel (206) and a fixed seat (207), wherein the fixed seat (207) is installed on a base (400), the idler wheel (206) is rotatably installed on the fixed seat (207), the idler wheel (206) is respectively meshed with the first driving gear (205) and a rotating gear (111), and the first servo motor (201) is connected with the first driving gear (205) through the first speed reducer (202).

7. The power chuck as set forth in claim 6, wherein: the chuck rotation driving device (200) comprises a first flange plate (204), a first tensioning strip (203) and a second tensioning strip (208), a first speed reducer (202) is installed on a fixed seat (207) through the first flange plate (204), the first tensioning strip (203) is installed on the fixed seat (207), the first tensioning strip (203) is connected with the first flange plate (204) through a fastener, the second tensioning strip (208) is installed on the edge of a base (400), and the second tensioning strip (208) tightly abuts against the fixed seat (207) through the fastener.