CN216780365U

CN216780365U - Pneumatic oscillating clamping jaw

Info

Publication number: CN216780365U
Application number: CN202123402381.0U
Authority: CN
Inventors: 李刚; 王强国; 王建召; 吴亿; 孙晓艳; 孙兵; 杨芳; 谢志佳; 王建昌; 景建富; 赵泽徐
Original assignee: Ningxia Deris Intelligent Technology Co ltd
Current assignee: Ningxia Deris Intelligent Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-21
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a pneumatic swing type clamping jaw, which comprises: the three-jaw chuck is used for clamping a workpiece, comprises a swinging shaft with a reciprocating rotation function and a connecting block which is used for connecting the three-jaw chuck and the swinging shaft into a whole; the two ends of the swing shaft are erected on the U-shaped swing frame, the swing air cylinder assembly is further fixed on the outer side of the U-shaped swing frame, and the swing air cylinder assembly and the swing shaft are connected to the outer side of the U-shaped swing frame and are mainly used for clamping shaft parts to complete overturning actions at a certain angle in the same plane.

Description

Pneumatic oscillating clamping jaw

Technical Field

The utility model relates to a swing type clamping jaw, in particular to a pneumatic swing type clamping jaw.

Background

Along with the continuous development of the automation industry and the increasing demand of flexible production line, the industrial robot is applied to various automatic production lines popularized, and through designing various clamps, grippers and clamping jaws, the clamping jaws are installed at the end part of the industrial robot, so that the industrial robot can be utilized to drive parts of various shapes and specifications to carry out material transfer, workpiece processing and other work on the production lines.

The shaft parts are the most common parts in industrial production, a three-jaw chuck self-centering mode is usually adopted for clamping the shaft parts, and the shaft parts are often required to be turned over when the shaft parts are processed in a production line so as to meet the requirements of the technological process.

In the prior art, a driving mode that a motor is matched with a speed reducer is often adopted for driving a workpiece to overturn, but in order to improve the transmission ratio, the size of the speed reducer is often larger, or a harmonic speed reducer with high price is adopted, so that the cost of the overturning mechanism is higher.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pneumatic swing type clamping jaw for solving the problems in the prior art.

This clamping jaw includes: the three-jaw chuck is used for clamping a workpiece, comprises a swinging shaft with a reciprocating rotation function and a connecting block which is used for connecting the three-jaw chuck and the swinging shaft into a whole; the two ends of the swing shaft are erected on the U-shaped swing frame, the swing air cylinder assembly is further fixed on the outer side of the U-shaped swing frame, and the swing air cylinder assembly and the swing shaft are connected to the outer side of the U-shaped swing frame.

Further, the oscillating cylinder assembly includes: the device comprises a first cylinder and a second cylinder which are arranged side by side, two racks arranged at the front ends of extension rods of the first cylinder and the second cylinder, and a swing gear arranged between the two racks and meshed with the two racks; the first air cylinder and the second air cylinder drive the oscillating shaft to rotate forwards or backwards by driving the two racks to move reversely.

Furthermore, a swing angle limiting sleeve is arranged below the rack, a swing angle limiting shaft in threaded connection is arranged in the swing angle limiting sleeve, and the position of the swing angle limiting shaft determines the maximum stroke of the rack in extension.

Furthermore, the swinging shaft and the connecting block are connected into a whole through a flat key.

Furthermore, at least two groups of limit screws are arranged on the connecting block and the U-shaped swing frame, the two groups of limit screws on the connecting block are respectively fixed on two groups of planes which are perpendicular to each other and are distributed at an angle of 90 degrees, and the two groups of limit screws on the U-shaped swing frame are arranged in parallel.

Furthermore, in order to limit the axial position of the workpiece, an axial positioning device is arranged on the three-jaw chuck.

The utility model has the technical effects that: the two groups of cylinders which are arranged in parallel and have lower use cost are used as power input mechanisms, the two groups of extension rods are controlled to move reversely, two racks are driven to drive the swing gear to rotate simultaneously, so that the rotating shaft, the connecting block and the three-jaw chuck are turned, the maximum turning angle is determined by the position of the swing angle limiting shaft in the swing angle limiting sleeve, the two pole limiting positions after turning are limited by adjustable limiting screws, the position of a workpiece is controlled by adjusting the limiting screws when the three-jaw chuck is used or assembled, and the angle value of the workpiece which can rotate is controlled by adjusting the swing angle limiting shaft.

The device does not use a motor and a speed reducer, realizes the turnover of the workpiece, and effectively reduces the manufacturing cost

Drawings

FIG. 1 is an isometric view of a jaw of the present invention;

FIG. 2 is a front view of a jaw of the present invention;

figure 3 is a front view of the jaws of the present invention after they have been turned 90.

In the figure, 1, a three-jaw chuck, 2, a U-shaped swing frame, 3, a swing cylinder assembly, 4, a swing shaft, 5, a connecting block, 6, a limit screw, 31, a first cylinder, 32, a second cylinder, 33, a swing gear, 34, a rack, 35, a swing angle limit shaft, 36, a swing angle limit sleeve, 11, an axial positioning device and 41, a flat key.

Detailed Description

The following describes an embodiment of the present invention with reference to fig. 1 to 3.

Figure 1 illustrates the overall structure of a jaw comprising: the three-jaw chuck comprises a three-jaw chuck 1 for clamping a workpiece, a swinging shaft 4 with a reciprocating rotation function, and a connecting block 5 for connecting the three-jaw chuck 1 and the swinging shaft 4 into a whole; the two ends of the swing shaft 4 are erected on the U-shaped swing frame 2, the swing cylinder assembly 3 is further fixed on the outer side of the U-shaped swing frame 2, and the swing cylinder assembly 3 and the swing shaft 4 are connected to the outer side of the U-shaped swing frame 2; in order to limit the axial position of the workpiece, an axial positioning device 11 is arranged on the three-jaw chuck 1.

Fig. 2 illustrates a transmission structure inside the oscillating cylinder assembly, said oscillating cylinder assembly 3 comprising: a first cylinder 31 and a second cylinder 32 which are arranged side by side, two racks 34 which are arranged at the front ends of the extension rods of the first cylinder 31 and the second cylinder 32, and a swing gear 33 which is arranged between the two racks 34 and is meshed with the two racks 34; the swing gear 33 is connected with the swing shaft 4 into a whole, and the first air cylinder 31 and the second air cylinder 32 drive the swing shaft 4 to rotate forward or backward by driving the two racks 34 to move backward. A swing angle limiting sleeve 36 is arranged below the rack 34, a swing angle limiting shaft 35 connected through threads is arranged in the swing angle limiting sleeve 36, the position of the swing angle limiting shaft 35 determines the maximum extending stroke of the rack 34, and the maximum axial displacement stroke of the rack in the axial direction can be limited by adjusting the axial position of the swing angle limiting shaft relative to the swing angle limiting sleeve.

Fig. 3 shows the installation mode of the limit screws and the connection mode of the connecting block and the swing shaft, the swing shaft 4 and the connecting block 5 are connected into a whole through a flat key 41, at least two sets of limit screws 6 are arranged on the connecting block 5 and the U-shaped swing frame 2, two sets of limit screws 6 on the connecting block 5 are respectively fixed on two sets of planes perpendicular to each other to form 90-degree distribution, and two sets of limit screws 6 on the U-shaped swing frame 2 are arranged in parallel to each other.

The working principle is as follows: the three-jaw chuck 1 clamps shaft workpieces, the axial positioning device 11 limits the axial positions of the workpieces on the three-jaw chuck 1, the extending rods of the first air cylinder 31 and the second air cylinder 32 are controlled by air pressure to drive the racks 34 to move towards opposite directions, and the middle swing gear 33 rotates forwards or backwards under the common action of the two racks 34 until a group of limiting screws 6 on the connecting block 5 are in contact with a group of limiting screws 6 on the U-shaped swing frame 2, so that the workpiece is indicated to rotate to the limit position.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pneumatic oscillating jaw, characterized in that it comprises: the three-jaw chuck comprises a three-jaw chuck (1) for clamping a workpiece, a swinging shaft (4) with a reciprocating rotation function, and a connecting block (5) for connecting the three-jaw chuck (1) and the swinging shaft (4) into a whole;

the two ends of the swing shaft (4) are erected on the U-shaped swing frame (2), the swing cylinder assembly (3) is further fixed on the outer side of the U-shaped swing frame (2), and the swing cylinder assembly (3) and the swing shaft (4) are connected to the outer side of the U-shaped swing frame (2).

2. Pneumatic oscillating jaw according to claim 1, characterized in that said oscillating cylinder assembly (3) comprises: the device comprises a first cylinder (31) and a second cylinder (32) which are arranged side by side, two racks (34) which are arranged at the front ends of extension rods of the first cylinder (31) and the second cylinder (32), and a swing gear (33) which is arranged between the two racks (34) and is meshed with the two racks (34);

the swing gear (33) is connected with the swing shaft (4) into a whole, and the first air cylinder (31) and the second air cylinder (32) drive the two racks (34) to move in the reverse direction to drive the swing shaft (4) to rotate in the forward direction or the reverse direction.

3. The pneumatic swing type clamping jaw as claimed in claim 2, wherein a swing angle limiting sleeve (36) is arranged below the rack (34), a swing angle limiting shaft (35) connected through threads is arranged in the swing angle limiting sleeve (36), and the position of the swing angle limiting shaft (35) determines the maximum extending stroke of the rack (34).

4. Pneumatic oscillating jaw according to claim 1, characterised in that the oscillating axle (4) is connected in one piece with a connecting block (5) by means of a flat key (41).

5. The pneumatic swing type clamping jaw as claimed in claim 1, wherein at least two sets of limiting screws (6) are arranged on the connecting block (5) and the U-shaped swing frame (2), the two sets of limiting screws (6) on the connecting block (5) are respectively fixed on two sets of planes which are perpendicular to each other and are distributed at 90 degrees, and the two sets of limiting screws (6) on the U-shaped swing frame (2) are arranged in parallel to each other.

6. Pneumatic oscillating jaw according to claim 1, characterised in that the three-jaw chuck (1) is provided with axial positioning means (11).