CN108994561B

CN108994561B - Clamp apparatus

Info

Publication number: CN108994561B
Application number: CN201810837027.4A
Authority: CN
Inventors: 武云志; 谭畅; 莫玉麟; 蒋乾坤; 郑海强
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2019-12-27
Anticipated expiration: 2038-07-26
Also published as: CN108994561A

Abstract

The invention provides a clamp. The clamp is used for assembling the clamped piece and the piece to be assembled together, and comprises: a clamp body; the clamping jaw is used for clamping a clamped piece and is movably arranged on the clamp body; and the pressing component is arranged on the clamp body, and at least part of the pressing component is arranged in a telescopic manner so that the pressing component applies acting force towards the assembly to be assembled to the clamped piece after the clamped piece is placed on the assembly to be assembled by the clamping jaw, so that the clamped piece is pressed on the assembly to be assembled. The invention effectively solves the problem of lower working efficiency of the clamp in the prior art.

Description

Clamp apparatus

Technical Field

The invention relates to the technical field of clamps, in particular to a clamp.

Background

At present, the chassis of the air conditioner outer unit is formed by stamping a metal plate, and in the stamping process of the metal plate, the metal plate is easy to deform due to stress or other heat effects, or slight deviation exists in hole positions after the metal plate is stamped due to other factors which are difficult to avoid. Due to the processing mode of the base plate, in the process of assembling the air conditioner external unit, the phenomenon that the positioning hole of the base plate cannot be assembled in place with the pin on the process plate due to the burrs is easy to occur, namely, the pin cannot completely extend into the positioning hole, and the assembling quality of the base plate and the process plate is affected.

In the prior art, the conventional clamp is mainly adopted for clamping and placing the chassis. However, the conventional clamp cannot solve the problem that the assembly cannot be performed, manual participation is required for further assembly of the chassis and the process plate, the working efficiency is greatly reduced, and the labor intensity of workers is increased.

Disclosure of Invention

The invention mainly aims to provide a clamp to solve the problem that the clamp in the prior art is low in working efficiency.

In order to achieve the above object, the present invention provides a jig for fitting a clamped member and a member to be fitted together, comprising: a clamp body; the clamping jaw is used for clamping a clamped piece and is movably arranged on the clamp body; and the pressing component is arranged on the clamp body, and at least part of the pressing component is arranged in a telescopic manner so that the pressing component applies acting force towards the assembly to be assembled to the clamped piece after the clamped piece is placed on the assembly to be assembled by the clamping jaw, so that the clamped piece is pressed on the assembly to be assembled.

Further, the anchor clamps body includes the installation department, and the clamping jaw all sets up on the installation department with compressing tightly the subassembly, compresses tightly the subassembly and includes: the guide post penetrates through the mounting part and is movably arranged along the axis of the guide post, and the first end of the guide post is positioned on one side of the mounting part, which is far away from the clamped piece; the first piece that compresses tightly sets up the second end at the guide post, and the second end of guide post is located the installation department and is close to the one side by the holder, compresses tightly the subassembly through first piece and the contact by the holder of compressing tightly.

Furthermore, the guide post is a plurality of, and first compressing tightly the piece and be connected with the second end of a plurality of guide posts.

Further, the first pressing member is made of an elastic material.

Further, have spacing portion on the guide post, compress tightly the subassembly and still include: the spring is sleeved on the guide post, and two ends of the spring are respectively abutted to the mounting portion and the limiting portion, so that the guide post moves under the action of the spring.

Further, the hold-down assembly further comprises: the linear bearing is arranged on the mounting part, and the guide post is slidably arranged in the linear bearing in a penetrating way; and the fastening assembly is arranged at the first end of the guide post to prevent the guide post from being pulled out of the linear bearing.

Further, the pressing component is multiple, and the multiple pressing components are arranged around the clamping jaws.

Further, the jig further includes an auxiliary pressing device, and the auxiliary pressing device includes: a support; the driving structure is movably arranged on the bracket; and the second pressing piece is connected with the driving structure, and the driving structure drives the second pressing piece to move towards the clamped piece so as to press the clamped piece on the to-be-assembled piece.

Further, the auxiliary pressing device further comprises: the sliding table cylinder is arranged on the support, the driving structure is connected with the support through the sliding table cylinder, and the sliding table cylinder drives the driving structure to move towards or away from the clamped piece; the moving direction of the sliding table cylinder driving the driving structure to move is perpendicular to the moving direction of the driving structure driving the second pressing piece to move.

Further, the driving structure is an air cylinder or a hydraulic cylinder, and a piston rod of the air cylinder or the hydraulic cylinder is connected with the second pressing piece.

By applying the technical scheme of the invention, the clamp is used for assembling the clamped piece and the piece to be assembled together and comprises a clamp body, a clamping jaw and a pressing assembly. The clamping jaw is used for clamping a clamped piece and movably arranged on the clamp body. The pressing assembly is arranged on the clamp body, and at least part of the pressing assembly is arranged in a telescopic mode so that the pressing assembly applies acting force to the clamped piece towards the assembly piece to be assembled after the clamped piece is placed on the assembly piece by the clamping jaws, and the clamped piece is pressed on the assembly piece to be assembled. Like this, use anchor clamps to by the holder with treat the in-process of assembly, the clamping jaw of anchor clamps will be held by the holder and place on treating the assembly, compress tightly the subassembly and apply towards the effort of treating the assembly to by the holder to make by closely cooperating between holder and the assembly, until the two assembles to target in place, and then promoted the work efficiency of anchor clamps, solved the lower problem of anchor clamps work efficiency among the prior art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows an isometric view of an embodiment of a jig according to the invention placing a clamped member on a member to be assembled;

FIG. 2 shows a front view of the clamp of FIG. 1;

FIG. 3 shows a side view of the clamp of FIG. 1; and

fig. 4 is a perspective view illustrating an auxiliary pressing device according to an embodiment of the jig of the present invention.

Wherein the figures include the following reference numerals:

10. a clamp body; 11. an installation part; 20. a clamped member; 30. a clamping jaw; 40. a compression assembly; 41. a guide post; 42. a first pressing member; 43. a spring; 44. a linear bearing; 45. a fastening assembly; 50. assembling a component to be assembled; 60. an auxiliary pressing device; 61. a support; 62. a drive structure; 63. a second pressing member; 64. slip table cylinder.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless stated to the contrary, use of the directional terms "upper and lower" are generally directed to the orientation shown in the drawings, or to the vertical, or gravitational direction; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; "inner and outer" refer to the inner and outer relative to the profile of the respective member itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that the work efficiency of the clamp in the prior art is lower, the application provides a clamp.

As shown in fig. 1, the jig for assembling the member to be assembled 20 and the member to be assembled 50 includes a jig body 10, a holding jaw 30, and a pressing member 40. Wherein, the clamping jaw 30 is used for clamping the clamped piece 20, and the clamping jaw 30 is movably arranged on the clamp body 10. The pressing component 40 is arranged on the clamp body 10, and at least part of the pressing component 40 is telescopically arranged, so that after the clamping jaws 30 place the clamped piece 20 on the piece to be assembled 50, the pressing component 40 applies a force towards the piece to be assembled 50 to the clamped piece 20, so as to press the clamped piece 20 on the piece to be assembled 50.

By applying the technical scheme of the embodiment, in the process of assembling the clamped piece 20 and the piece to be assembled 50 by using the clamp, the clamping jaw 30 of the clamp is clamped by the clamped piece 20 and is placed on the piece to be assembled 50, and the pressing component 40 applies an acting force towards the piece to be assembled 50 to the clamped piece 20, so that the clamped piece 20 and the piece to be assembled 50 are tightly matched until the clamped piece 20 and the piece to be assembled are assembled in place, the working efficiency of the clamp is further improved, and the problem of low working efficiency of the clamp in the prior art is solved.

In this embodiment, the clamped member 20 is an air conditioner base plate, the to-be-assembled member 50 is a process plate, the clamp clamps the air conditioner base plate so that the air conditioner base plate is clamped and placed on the process plate, the pins on the process plate pass through the pin holes of the air conditioner base plate, and the compressing assembly 40 compresses the air conditioner base plate so that the pins completely enter the pin holes.

In this embodiment, even if the pin hole of the clamped piece 20 (air conditioner chassis) generates burrs due to the machining process, the to-be-assembled piece 50 (process plate) and the clamped piece 20 (air conditioner chassis) can be well assembled, so that the reliability and the finished product qualification rate of subsequent automatic stations are improved, the labor cost is reduced, and the working efficiency is improved.

As shown in fig. 1 to 3, the clamp body 10 includes a mounting portion 11, the clamping jaw 30 and the pressing assembly 40 are both disposed on the mounting portion 11, and the pressing assembly 40 includes a guide post 41 and a first pressing member 42. The guide post 41 is disposed on the mounting portion 11 in a penetrating manner, the guide post 41 is movably disposed along an axis thereof, and a first end of the guide post 41 is located on a side of the mounting portion 11 away from the clamped member 20. The first pressing member 42 is disposed at the second end of the guiding column 41, and the second end of the guiding column 41 is located at one side of the mounting portion 11 close to the clamped member 20, and the pressing assembly 40 is in contact with the clamped member 20 through the first pressing member 42. In this way, the driving device drives the clamp body 10 to move, and the pressing assembly 40 moves along with the clamp body 10 and is movably arranged relative to the clamp body 10, so as to realize the pressing of the clamped piece 20 by the pressing assembly 40. In the above process, the force applied by the pressing assembly 40 to the clamped element 20 can be changed along with the movement of the pressing assembly 40, so as to avoid the generation of large force between the pressing assembly and the clamped element 20 to cause damage to the pressing assembly 40 and the clamped element 20.

Specifically, the driving device drives the clamp to move, so that the clamp places the clamped piece 20 on the piece to be assembled 50, and then the driving device drives the clamp to move towards the clamp towards the clamped piece 20, so as to realize the compression of the clamped piece 20 and the piece to be assembled 50 by the compressing assembly 40. In the above process, when the first pressing member 42 contacts the clamped member 20, the guide column 41 moves towards the direction away from the clamped member 20 to adjust the acting force between the first pressing member 42 and the clamped member 20, so as to prevent the clamped member 20 from being damaged under the condition that the first pressing member 42 is guaranteed to be pressed by the clamped member 20 and the to-be-assembled member 50, and further improve the working efficiency and the working performance of the clamp.

Alternatively, the guide posts 41 are plural, and the first pressing member 42 is connected to the second ends of the plural guide posts 41. The pressing assembly 40 is plural, and the plural pressing assemblies 40 are arranged around the holding jaw 30. As shown in fig. 1 and 3, there are two pressing assemblies 40, each pressing assembly 40 includes two guide posts 41 and a first pressing member 42 arranged at an interval, the first pressing member 42 is connected to the second ends of the two guide posts 41, so as to increase the span of the first pressing member 42, increase the contact area between the first pressing member 42 and the clamped member 20, and further improve the pressing effect of the first pressing member 42 on the clamped member 20 and the to-be-assembled member 50.

It should be noted that the number of the pressing assemblies 40 is not limited to this, alternatively, the number of the pressing assemblies 40 is four, six or eight, and four, six or eight pressing assemblies 40 are arranged around the clamping jaw 30 to increase the contact area between the pressing assemblies 40 and the clamped member 20, so as to improve the pressing effect of the pressing assemblies 40 and avoid the generation of stress concentration between the pressing assemblies 40 and the clamped member 20.

The number of the guide posts 41 is not limited to this. Optionally, the guide posts 41 are three, four or five. Thus, the arrangement can further increase the span of the first pressing member 42, and improve the pressing effect of the pressing assembly 40 on the clamped member 20 and the to-be-assembled member 50, thereby ensuring that the clamped member 20 and the to-be-assembled member 50 are assembled in place.

In the present embodiment, the first pressing member 42 is made of an elastic material. Thus, when the first pressing piece 42 is contacted with the clamped piece 20, the acting force between the first pressing piece 42 and the clamped piece 20 can be buffered by the material arrangement, and structural damage of the first pressing piece 42 and the clamped piece 20 is avoided.

In this embodiment, the first pressing member 42 is a sponge.

It should be noted that the type of the first pressing member 42 is not limited thereto. Optionally, the first compression member 42 is rubber.

As shown in fig. 1 to 3, the guide post 41 has a limiting portion thereon, and the pressing assembly 40 further includes a spring 43. Wherein, the spring 43 is sleeved on the guide post 41, and two ends of the spring 43 are respectively abutted with the mounting part 11 and the limiting part, so that the guide post 41 moves under the action of the spring 43. Thus, in the process that the guide post 41 moves relative to the mounting portion 11, the spring 43 applies elastic force to the guide post 41 to reduce the moving speed of the guide post 41 and reduce the impact force of the guide post 41 on the mounting portion 11, so that vibration and noise generated on the clamp are avoided, and the working performance and the operation reliability of the clamp are improved. Meanwhile, the spring 43 is arranged to enable the clamp to clamp the clamped piece 20 more stably in the clamping process of the clamp clamping jaws.

In this embodiment, the mounting portion 11 is plate-shaped, the limiting portion is a ring-shaped structure that is sleeved on the guide post 41, and the limiting portion and the guide post 41 are integrally formed. The structure is simple, and easy to process and realize.

As shown in fig. 1-3, the hold-down assembly 40 further includes a linear bearing 44 and a fastening assembly 45. The linear bearing 44 is disposed on the mounting portion 11, and the guide post 41 is slidably inserted into the linear bearing 44. A fastening assembly 45 is provided at the first end of the guide post 41 to prevent the guide post 41 from coming out of the linear bearing 44. Specifically, during the process that the guide post 41 moves relative to the mounting portion 11, the guide post 41 is in contact with the inner surface of the linear bearing 44 and is not in direct contact with the mounting portion 11, so that the friction force applied to the guide post 41 is reduced, and the guide post 41 is prevented from being worn to influence the service life of the clamp. The fastening assembly 45 fastens the first end of the guide post 41, so that the guide post 41 is prevented from being separated from the linear bearing 44 and the mounting part 11 in the moving process, and the structural reliability and the operation stability of the clamp are further improved.

Specifically, the fastening assembly 45 includes a nut, a washer, and a bumper. Wherein, the buffer is located between gasket and installation department 11, and the gasket is located between nut and the buffer to avoid guide post 41 to deviate from installation department 11. The structure is simple, and easy to realize and process.

As shown in fig. 4, the clamp further includes an auxiliary pressing device 60, and the auxiliary pressing device 60 includes a bracket 61, a driving structure 62, and a second pressing member 63. Wherein the drive structure 62 is movably arranged on the support 61. The second pressing member 63 is connected to the driving mechanism 62, and the driving mechanism 62 drives the second pressing member 63 to move toward the clamped member 20, so as to press the clamped member 20 against the member to be assembled 50. Specifically, the auxiliary pressing device 60 is disposed at a distance from the jig body 10 to further press the clamped member 20 and the to-be-assembled member 50 pressed by the pressing assembly 40, thereby ensuring that the clamped member 20 and the to-be-assembled member 50 are assembled in place.

Specifically, the bracket 61 is fixed to a working platform on which the to-be-assembled part 50 is placed, the driving structure 62 drives the second pressing part 63 to move towards the to-be-clamped part 20, and the to-be-clamped part 20 and the to-be-assembled part 50 are pressed through the second pressing part 63, so that the working efficiency of the clamp is improved.

As shown in fig. 4, the auxiliary pressing device 60 further includes a slide table cylinder 64. The sliding table cylinder 64 is arranged on the bracket 61, the driving structure 62 is connected with the bracket 61 through the sliding table cylinder 64, and the sliding table cylinder 64 drives the driving structure 62 to move towards or away from the clamped piece 20; the moving direction of the sliding table cylinder 64 driving the driving structure 62 to move is perpendicular to the moving direction of the driving structure 62 driving the second pressing member 63 to move. Like this, slip table cylinder 64 drives drive structure 62 and moves, when anchor clamps were placed by holder 20, ensures that drive structure 62 and second compress tightly piece 63 can not take place the structure with by holder 20 and interfere, ensures drive structure 62 and second to compress tightly piece 63 promptly and dodge by holder 20 setting, and then promotes the structural reliability of anchor clamps.

In this embodiment, the clamp further includes an air cylinder provided on the clamp body 10 and a timing belt connected to a piston rod of the air cylinder. Wherein the jaw 30 is connected to a timing belt. The cylinder drives the synchronous belt to rotate through the piston rod, and the synchronous belt drives the clamping jaw 30 to fold inwards or open outwards so as to realize the grabbing or releasing of the clamped piece 20 by the clamping jaw 30.

Specifically, the robot arm drives the clamp to move, so that the compressing assembly 40 presses the clamped piece 20 (air conditioner chassis), and then the piston rod of the cylinder contracts and drives the synchronous belt to rotate, the synchronous belt drives the clamping jaw 30 to move, and the clamping jaw 30 is folded inwards to clamp the clamped piece 20 (air conditioner chassis). Then, the robot arm drives the clamp and the clamped piece 20 (air conditioner chassis) to move along a preset path, when the position of the pin of the to-be-assembled piece 50 (process plate) is reached, the clamped piece 20 (air conditioner chassis) is placed on the to-be-assembled piece 50 (process plate), the piston rod of the air cylinder extends out and drives the synchronous belt to rotate in the reverse direction, the synchronous belt drives the clamping jaw 30 to move, the clamping jaw 30 is enabled to be opened outwards, the clamped piece 20 (air conditioner chassis) is released, and the clamping jaw 30 moves to the position avoiding the clamped piece 20 (air conditioner chassis). Then, the mechanical arm drives the clamp to move continuously towards the clamped piece 20 (air conditioner chassis) for a preset distance, wherein the preset distance is set according to the yield limit point of the pressing component 40, the elastic force of the spring 43 of the pressing component 40 is utilized to convert the rigid motion of the mechanical arm into flexible motion, the clamped piece 20 (air conditioner chassis) is pressed downwards for a preset distance, so that the pin of the to-be-assembled piece 50 (process plate) enters the pin hole of the clamped piece 20 (air conditioner chassis), the clamping of the clamped piece 20 (air conditioner chassis) and the to-be-assembled piece 50 (process plate) by the pressing component 40 is completed, then the sliding table cylinder 64 of the auxiliary pressing device 60 drives the driving structure 62 and the second pressing piece 63 to move towards the clamped piece 20 (air conditioner chassis) to further press the clamped piece 20 (air conditioner chassis) and the to-be-assembled piece 50 (process plate), to ensure that the clamped member 20 and the to-be-assembled member 50 are assembled in place.

In the above process, when the clamped member 20 (air conditioner base plate) is placed on the member to be assembled 50 (process plate) by the jig, the optical fiber sensor performs signal transmission with the slide table cylinder 64, and at this time, the slide table cylinder 64 extends to the maximum stroke. Then, the driving structure 62 drives the second pressing member 63 to move downward, so as to realize the pressing action of the second pressing member 63 on the clamped member 20 (air conditioner chassis), and further press the clamped member 20 (air conditioner chassis) and the to-be-assembled member 50 (process board).

Alternatively, the driving structure 62 is a pneumatic or hydraulic cylinder, and a piston rod of the pneumatic or hydraulic cylinder is connected with the second pressing member 63. The structure is simple and easy to realize, so that the structure of the clamp is simpler and more compact.

It should be noted that the type of the driving structure 62 is not limited thereto. Alternatively, the drive structure 62 is a motor.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

in the process of assembling the clamped piece and the piece to be assembled by using the clamp, the clamping jaw of the clamp is clamped by the clamped piece and placed on the piece to be assembled, the pressing component applies an acting force towards the piece to be assembled to the clamped piece, so that the clamped piece and the piece to be assembled are tightly matched until the clamped piece and the piece to be assembled are assembled in place, the working efficiency of the clamp is improved, and the problem of low working efficiency of the clamp in the prior art is solved.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

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. A jig for fitting a member to be fitted (20) and a member to be fitted (50) together, comprising:

a clamp body (10);

a clamping jaw (30) for clamping the clamped piece (20), the clamping jaw (30) being movably arranged on the clamp body (10);

a pressing component (40) arranged on the clamp body (10), wherein at least part of the pressing component (40) is arranged in a telescopic manner so that the pressing component (40) applies a force towards the to-be-assembled part (50) to the clamped part (20) after the clamping jaws (30) place the clamped part (20) on the to-be-assembled part (50) to press the clamped part (20) on the to-be-assembled part (50), a driving device drives the clamp body (10) to move, and the pressing component (40) moves along with the clamp body (10) and is movably arranged relative to the clamp body (10);

the anchor clamps body (10) include installation department (11), clamping jaw (30) with it all sets up to compress tightly subassembly (40) on installation department (11), it includes to compress tightly subassembly (40):

the guide post (41) is arranged on the mounting part (11) in a penetrating mode, the guide post (41) is movably arranged along the axis of the guide post, and the first end of the guide post (41) is located on one side, away from the clamped piece (20), of the mounting part (11);

the first pressing piece (42) is arranged at the second end of the guide column (41), the second end of the guide column (41) is positioned on one side, close to the clamped piece (20), of the mounting part (11), and the pressing assembly (40) is in contact with the clamped piece (20) through the first pressing piece (42);

wherein, spacing portion has on guide post (41), compress tightly subassembly (40) still includes:

establish spring (43) on guide post (41), the both ends of spring (43) respectively with installation department (11) with spacing portion butt, so that guide post (41) are in move under the effect of spring (43).

2. The clamp according to claim 1, characterized in that said guide posts (41) are plural, and said first pressing member (42) is connected to second ends of said guide posts (41) plural.

3. A clamp as claimed in claim 1, characterized in that said first pressing member (42) is made of an elastic material.

4. The clamp according to claim 1, wherein the compression assembly (40) further comprises:

the linear bearing (44) is arranged on the mounting part (11), and the guide column (41) is slidably arranged in the linear bearing (44) in a penetrating way;

a fastening assembly (45), the fastening assembly (45) being disposed at a first end of the guide post (41) to prevent the guide post (41) from being removed from the linear bearing (44).

5. The clamp according to claim 1, characterized in that said pressing assembly (40) is in plurality, a plurality of said pressing assemblies (40) being arranged around said clamping jaws (30).

6. The clamp according to claim 1, further comprising an auxiliary compression device (60), said auxiliary compression device (60) comprising:

a bracket (61);

a drive structure (62) movably arranged on the bracket (61);

a second pressing piece (63) connected with the driving structure (62), wherein the driving structure (62) drives the second pressing piece (63) to move towards the clamped piece (20) so as to press the clamped piece (20) on the to-be-assembled piece (50).

7. The clamp according to claim 6, characterized in that said auxiliary pressing means (60) further comprise:

the sliding table cylinder (64) is arranged on the support (61), the driving structure (62) is connected with the support (61) through the sliding table cylinder (64), and the sliding table cylinder (64) drives the driving structure (62) to move towards or away from the clamped piece (20); the sliding table cylinder (64) drives the driving structure (62) to move in a direction perpendicular to the direction in which the driving structure (62) drives the second pressing piece (63) to move.

8. Clamp according to claim 6, wherein the drive structure (62) is a pneumatic or hydraulic cylinder, the piston rod of which is connected to the second pressing member (63).