CN218050706U - Positioning and clamping device and threading equipment - Google Patents

Abstract

The application provides a positioning and clamping device and tooth sleeving equipment, wherein the positioning and clamping device comprises a first clamping seat used for supporting a supporting seat; the second clamping seat is arranged opposite to the first clamping seat; the base supports the second clamping seat, and the middle position of the second clamping seat is hinged and installed on the base; and the driving assembly is connected with the base and used for driving the base to reciprocate so as to clamp the workpiece to be machined when the second clamping seat is close to the first clamping seat and remove the clamping of the workpiece to be machined when the second clamping seat is far away from the first clamping seat. When drive assembly drive base and second holder were close to first holder, because the second holder articulated install on the base, the direction of second holder can change, and the second holder can be completely with a plurality of contact of treating the machined part promptly to can improve first holder and second holder to a plurality of tight fixed effects of clamp of treating the machined part, help improving cover tooth effect.

Description

Positioning and clamping device and threading equipment

Technical Field

The application belongs to the technical field of tapping, and more specifically relates to a positioning and clamping device and a tapping device using the same.

Background

The threading equipment is a machining equipment for preparing internal threads or external threads on a workpiece to be machined. The tooth sleeving device is used for clamping and fixing a workpiece to be machined through a clamping device so as to ensure that the workpiece to be machined is not subjected to position deviation in the tooth sleeving process, and further the tooth sleeving effect is improved.

Current clamping device adopts the structure of two splint and cylinders usually, and the steerable two splint of cylinder are close to each other in order to realize treating the centre gripping of machined part fixed. In order to improve the tooth-covering efficiency, a plurality of workpieces to be processed are usually clamped by two clamping plates. However, the reciprocating direction of the clamping plates controlled by the air cylinder is single, and the contact between each clamping plate and the multiple workpieces to be processed is incomplete, for example, after one workpiece to be processed is clamped, the other workpiece to be processed is not clamped, so that the two clamping plates cannot clamp and fix all the multiple workpieces to be processed, and the clamping effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of this application embodiment is to provide a positioning and clamping device and cover tooth equipment to solve exist among the relevant art: the existing clamping device has poor clamping effect on a plurality of workpieces to be machined, and further influences the tooth sleeving effect.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in one aspect, a positioning and clamping device is provided for clamping a workpiece to be machined on a supporting seat, comprising:

the first clamping seat is used for supporting the supporting seat;

the second clamping seat is opposite to the first clamping seat;

the base supports the second clamping seat, and the middle position of the second clamping seat is hinged to the base;

and the driving assembly is connected with the base and used for driving the base to reciprocate so as to clamp the workpiece to be machined when the second clamping seat is close to the first clamping seat and remove the clamping of the workpiece to be machined when the second clamping seat is far away from the first clamping seat.

This structure, when drive assembly drive base and second holder were close to first holder, because the second holder articulated install on the base, the direction of second holder can change, and the second holder can be completely with a plurality of contact of treating the machined part promptly to can improve first holder and second holder and to a plurality of tight fixed effects of clamp of treating the machined part, help improving cover tooth effect.

In one embodiment, the positioning and clamping device further includes two elastic members disposed on two sides of a hinge position between the second clamping seat and the base, one end of each elastic member abuts against the second clamping seat, and the other end of each elastic member abuts against the base.

According to the structure, the position of the second clamping seat can be corrected by the two elastic pieces, so that the second clamping seat can be completely contacted with a plurality of workpieces to be machined, the clamping effect of the workpieces to be machined is improved, and buffer protection can be realized.

In one embodiment, the second clamping seat is provided with two first clamping grooves into which one ends of the two elastic members respectively extend, and the base is provided with two second clamping grooves into which the other ends of the two elastic members respectively extend.

This structure, through the cooperation of each first draw-in groove and corresponding second draw-in groove, can fix a position the position of each elastic component, avoids each elastic component to take place the offset and become invalid, also can realize the quick location installation to each elastic component.

In one embodiment, a first groove is formed in a side surface, facing the first clamping seat, of the second clamping seat, and a buffer rubber pad is installed in the first groove.

This structure can improve the tight fixed effect of clamp of treating the machined part through the buffering cushion, also can realize treating the buffer protection of machined part, avoids bumping firmly and treats the machined part and cause the damage.

In one embodiment, the first clamping seat is provided with a first positioning groove for allowing one end of the workpiece to be machined to extend into, and the second clamping seat is provided with a second positioning groove for allowing the other end of the workpiece to be machined to extend into.

This structure, the location of treating the machined part can be realized through the cooperation of first constant head tank and second constant head tank and the clamp is tight, prevents to treat that the machined part takes place the offset.

In one embodiment, a third positioning groove for the workpiece to be machined to extend into is formed in a side surface, facing the first clamping seat, of the buffer rubber pad, and the third positioning groove is communicated with the second positioning groove.

With the structure, the workpiece to be processed can extend into the third positioning groove to realize the abutting connection with the buffer rubber mat.

In one embodiment, the base is provided with a second groove for the supporting seat to extend into.

With the structure, the second groove can accommodate the supporting seat, and the supporting seat can be tightly fixed and released from fixation through the reciprocating movement of the base.

In one embodiment, the base comprises a fixed seat connected with the driving assembly and a sliding seat slidably mounted on the fixed seat; the middle position of the second clamping seat is hinged to the fixed seat, and the sliding seat is provided with a second groove.

This structure, through sliding the sliding seat and setting up on the fixing base, the sliding seat of being convenient for realizes the pulling to the supporting seat through the second recess.

In one embodiment, the first clamping seat comprises a top seat arranged opposite to the second clamping seat, a base supporting the top seat, and an adjusting piece for adjusting the distance between the top seat and the second clamping seat, the adjusting piece is installed on the base, and the adjusting piece is connected with the top seat.

This structure can adjust the position of footstock on the base through the regulating part, and then adjusts the tight degree of clamp that the machined part was treated to footstock and second grip slipper, also can adapt to the not machined part of treating of unidimensional size.

In another aspect, a tooth covering device is provided, which comprises the positioning and clamping device provided by any one of the above embodiments.

This structure adopts foretell positioning and clamping device's cover tooth equipment to a plurality of tight effectual of clamp of treating the machined part, helps improving cover tooth effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a positioning and clamping device provided in an embodiment of the present application;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic structural diagram of a connection between a second clamping seat, a base and a driving assembly according to an embodiment of the present disclosure;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is an exploded view of a front surface of a second clamping seat according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural view of a back surface of a second chuck according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a base according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a first clamping seat according to an embodiment of the present application.

Wherein, in the drawings, the reference numerals are mainly as follows:

1. a workpiece to be processed; 2. a supporting seat;

3. a first clamping seat; 31. a first positioning groove; 32. a top seat; 33. a base; 331. a second step portion; 332. a third step portion; 333. a chute; 34. an adjustment member;

4. a second clamping seat; 41. a first card slot; 42. a first groove; 43. a cushion rubber pad; 431. a third positioning groove; 44. a second positioning groove;

5. a base; 51. a fixed shaft; 52. a second card slot; 53. a second groove; 54. a fixed seat; 55. a sliding seat; 56. a sliding shaft;

6. a drive assembly; 61. a mounting seat; 62. a drive member.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 2, a positioning and clamping device provided in an embodiment of the present application will now be described. The positioning and clamping device is used for clamping and fixing the workpiece 1 to be processed, and the workpiece 1 to be processed can be arranged on the supporting seat 2. The supporting base 2 can be a strip structure, and the number of the parts 1 to be processed can be one or more. When treating the quantity of machined part 1 and be a plurality ofly, a plurality ofly treat that machined part 1 can be installed on this supporting seat 2 along the length direction interval of supporting seat 2 to can realize treating a plurality ofly and treat that the clamp of machined part 1 is fixed.

The positioning and clamping device comprises a first clamping seat 3, a second clamping seat 4, a base 5 and a driving assembly 6. The first clamping seat 3 can be fixedly mounted on the fixing plate, and the supporting seat 2 can be mounted on the first clamping seat 3. The second clamping seat 4 is arranged opposite to the first clamping seat 3, and the second clamping seat 4 can be matched with the first clamping seat 3 to realize clamping and fixing of the workpiece 1 to be processed. As shown in fig. 3, the driving assembly 6 may specifically include a mounting seat 61 fixedly connected to the first clamping seat 3, and a driving member 62 mounted on the mounting seat 61, and the driving member 62 may be an air cylinder, an electric cylinder, an oil cylinder, and the like, which is not limited herein. The driving assembly 6 is connected to the base 5, and particularly the driving member 62 is fixedly connected to the base 5, so as to drive the base 5 to reciprocate. The middle position of the second clamping seat 4 is hinged on the base 5. Specifically, as shown in fig. 4, a fixed shaft 51 is fixedly mounted on the base 5, and the second holder 4 is rotatably mounted on the fixed shaft 51. This structure, when drive assembly 6 drive base 5 and second holder 4 are close to first holder 3, because second holder 4 articulates and installs on base 5, the direction of second holder 4 can change, second holder 4 can be completely with a plurality of contact of treating machined part 1 promptly to can improve first holder 3 and second holder 4 and to a plurality of tight fixed effect of clamp of treating machined part 1, help improving cover tooth effect.

In an embodiment, as a specific implementation manner of the positioning and clamping device provided in the embodiment of the present application, the positioning and clamping device further includes two elastic members (not shown) disposed on two sides of the hinge position of the second clamping seat 4 and the base 5, one end of each elastic member abuts against the second clamping seat 4, and the other end of each elastic member abuts against the base 5. Specifically, two elastic members are respectively located at both sides of the fixed shaft 51. Wherein, each elastic member may be a spring, which is not limited herein. In the structure, the two elastic pieces can respectively push against the two ends of the second clamping seat 4, so that on one hand, the second clamping seat 4 can be buffered and protected, namely the workpiece 1 to be processed can be buffered and protected; on the other hand, the position of second grip slipper 4 can be rectified to two elastic component to make second grip slipper 4 can treat a plurality of and treat that machined part 1 contact completely, and then improve the tight degree of clamp of second grip slipper 4 and first grip slipper 3 to a plurality of treated machined parts 1, and then improve and press from both sides tight effect.

In an embodiment, referring to fig. 6 and fig. 7, as a specific implementation manner of the positioning and clamping device provided in the embodiment of the present application, two first locking grooves 41 are formed on the second clamping seat 4 for allowing one ends of the two elastic members to respectively extend into, and two second locking grooves 52 are formed on the base 5 for allowing the other ends of the two elastic members to respectively extend into. Specifically, please refer to fig. 4, two first engaging grooves 41 are respectively formed at two ends of the second clamping seat 4, and the two first engaging grooves 41 are located at two sides of the fixing shaft 51. The two second engaging grooves 52 are respectively opened at two ends of the base 5, and the two second engaging grooves 52 are located at two sides of the fixed shaft 51. Each first draw-in groove 41 and each second draw-in groove 52 all are the cylinder configuration, and the axis of each first draw-in groove 41 and the axis collineation of corresponding second draw-in groove 52 to can ensure that each elastic component is flexible along the axis direction, prevent the skew of taking place. According to the structure, through the matching of each first clamping groove 41 and the corresponding second clamping groove 52, the position of each elastic part can be positioned, the failure caused by the position deviation of each elastic part is avoided, and the rapid positioning and installation of each elastic part can be realized.

In an embodiment, referring to fig. 5, as a specific implementation manner of the positioning and clamping device provided in the embodiment of the present application, a first groove 42 is formed on a side surface of the second clamping seat 4 facing the first clamping seat 3, and a buffer rubber pad 43 is installed in the first groove 42. Specifically, the configuration of the first groove 42 is consistent with the configuration of the cushion rubber 43, and the cushion rubber 43 forms an interference fit with the inner side wall of the first groove 42. The number of the first grooves 42 and the cushion rubber 43 is the same, and the number of the first grooves 42 may be one or more. When the number of first recess 42 and the quantity of buffering cushion 43 are a plurality of, a plurality of first recess 42 interval are installed on second grip slipper 4, and a plurality of buffering cushions 43 can realize the butt with a plurality of work pieces 1 of treating respectively to the realization is fixed the clamp of a plurality of work pieces 1 of treating. This structure can improve the tight fixed effect of clamp of treating machined part 1 through buffering cushion 43, also can realize treating the buffer protection of machined part 1, avoids bumping firmly and treats machined part 1 and cause the damage.

In an embodiment, referring to fig. 2, fig. 5 and fig. 8, as a specific implementation manner of the positioning and clamping device provided in the embodiment of the present application, the first clamping seat 3 is provided with a first positioning groove 31 for allowing one end of the workpiece 1 to be inserted into, and the second clamping seat 4 is provided with a second positioning groove 44 for allowing the other end of the workpiece 1 to be inserted into. Specifically, the member to be processed 1 may have a substantially cylindrical configuration, and the cross section of the first positioning groove 31 and the cross section of the second positioning groove 44 may have a semicircular structure, that is, the region enclosed by the first positioning groove 31 and the second positioning groove 44 may be adapted to the member to be processed 1. With the structure, the workpiece 1 to be processed can be positioned and clamped through the cooperation of the first positioning groove 31 and the second positioning groove 44, and the workpiece 1 to be processed is prevented from position deviation.

In an embodiment, referring to fig. 5, as a specific implementation manner of the positioning and clamping device provided in the embodiment of the present application, a third positioning groove 431 is formed on a side surface of the cushion rubber 43 facing the first clamping seat 3 for allowing the workpiece 1 to extend into, and the third positioning groove 431 is communicated with the second positioning groove 44. Specifically, the cross-section of the third positioning groove 431 has the same configuration as the cross-section of the second positioning groove 44, and may have a semicircular structure. The inner side walls of the third positioning grooves 431 and the inner side walls of the second positioning grooves 44 are coplanar, that is, the inner side walls of the second positioning grooves 44 and the inner side walls of the third positioning grooves 431 can be in contact with the outer peripheral surface of the workpiece 1 to be machined at the same time. With this structure, the workpiece 1 can be inserted into the third positioning groove 431 to be abutted against the cushion rubber 43. Treat the extrusion of machined part 1 through buffering cushion 43, can further improve and treat the tight effect of clamp of machined part 1, also can realize treating machined part 1 buffer protection.

In some embodiments, the first clamping seat 3 is provided with a buffer block at the position of the first positioning groove 31, the buffer block is provided with a fourth positioning groove for the workpiece 1 to be processed to extend into, the inner side wall of the fourth positioning groove is coplanar with the inner side wall of the first positioning groove 31, that is, the inner side wall of the first positioning groove 31 and the inner side wall of the fourth positioning groove can simultaneously contact with the outer peripheral surface of the workpiece 1 to be processed. This structure, when first grip slipper 3 is close to with second grip slipper 4, buffering cushion 43 and buffer block cooperation can be with treating that machined part 1 presss from both sides tightly fixed, when further improving the tight effect of clamp of treating machined part 1, also can play the buffering guard action of treating machined part 1.

In an embodiment, referring to fig. 3 and 4, as a specific implementation of the positioning and clamping device provided in the embodiment of the present application, the base 5 is provided with a second groove 53 for the supporting seat 2 to extend into. With the structure, when the driving assembly 6 drives the base 5 and the second clamping seat 4 to move towards the direction close to the first clamping seat 3, the supporting seat 2 can be pressed on the first clamping seat 3 by pushing the supporting seat 2 through the inner side wall of the second groove 53, so that the supporting seat 2 can be tightly fixed. When the driving component 6 drives the base 5 and the second clamping seat 4 to move towards the direction far away from the first clamping seat 3, the supporting seat 2 can be pulled out from the first clamping seat 3 by pushing the supporting seat 2 through the other inner side wall of the second groove 53, so that the supporting seat 2 can be picked up conveniently.

In an embodiment, referring to fig. 7, as a specific implementation of the positioning and clamping device provided in the embodiment of the present application, the base 5 includes a fixed seat 54 connected to the driving assembly 6 and a sliding seat 55 slidably mounted on the fixed seat 54; the middle position of the second clamping seat 4 is hinged on the fixed seat 54, and the sliding seat 55 is provided with a second groove 53. With the structure, when the driving assembly 6 drives the fixed seat 54 to reciprocate, the sliding seat 55 can be driven to reciprocate, so as to tightly fix and release the support seat 2.

In one embodiment, referring to fig. 7, the fixing base 54 is connected and fixed with the output shaft of the driving element 62, a through hole is formed in the fixing base 54, a sliding shaft 56 is slidably mounted in the through hole, the sliding shaft 56 passes through the through hole and is connected with the sliding base 55, and a first step portion which is in fit and abutting contact with the fixing base 54 is arranged at one end of the sliding shaft 56, which is far away from the sliding base 55. With this structure, when the driving assembly 6 drives the fixing seat 54 to move toward the direction close to the first clamping seat 3, the fixing seat 54 pushes the sliding seat 55 to move together, so that the supporting seat 2 can be pressed onto the first clamping seat 3 through the second groove 53. When the driving assembly 6 drives the fixed seat 54 to move away from the first clamping seat 3, and the fixed seat 54 moves in the opposite direction, the sliding seat 55 can be pulled to move in the opposite direction by the abutment of the fixed seat 54 and the sliding shaft 56, so that the supporting seat 2 can be pulled out of the first clamping seat 3 through the second groove 53.

In an embodiment, referring to fig. 8, as a specific implementation manner of the positioning and clamping device provided in the embodiment of the present application, the first clamping seat 3 includes a top seat 32 disposed opposite to the second clamping seat 4, a bottom seat 33 supporting the top seat 32, and an adjusting member 34 for adjusting a distance between the top seat 32 and the second clamping seat 4, the adjusting member 34 is mounted on the bottom seat 33, and the adjusting member 34 is connected to the top seat 32. Specifically, the base 33 is provided with a second step portion 331 for clamping the support seat 2 in cooperation with the sliding seat 55 and a third step portion 332 for supporting the top seat 32, the support seat 2 can be mounted on the second step portion 331, and the side of the top seat 32 facing the second clamping seat 4 is provided with a first positioning groove 31. The base 33 is provided with a sliding slot 333 for the sliding of the sliding seat 55, which can provide a directional guiding function for the sliding of the sliding seat 55. The adjusting member 34 may be a screw, a bolt, etc., and is not limited herein. With the structure, the position of the top seat 32 on the base 33 can be adjusted through the adjusting part 34, so that the clamping degree of the top seat 32 and the second clamping seat 4 for the workpiece 1 to be processed is adjusted, and the structure can be adapted to the workpieces 1 to be processed with different sizes.

When the supporting seat 2 has a plurality of workpieces 1 to be processed, correspondingly, the first clamping seat 3 may have a plurality of first positioning grooves 31, that is, the plurality of first positioning grooves 31 may be opened on the top seat 32. A plurality of second positioning grooves 44 can also be formed on the second holder 4; or, the number of the second clamping seats 4, the bases 5 and the driving assemblies 6 is multiple, and the multiple second clamping seats 4, the multiple bases 5 and the multiple driving assemblies 6 are divided into multiple groups, so that the multiple workpieces 1 to be machined are clamped and fixed. This application adopts and to set up a plurality of first locating grooves 31 on first grip slipper 3 to cooperate a plurality of second grip slipper 4, a plurality of base 5 and a plurality of drive assembly 6 to press from both sides tightly fixedly to a plurality of work pieces 1 of treating. Of course, in other embodiments, the number of the first clamping seat 3, the second clamping seat 4, the base 5, the driving assembly 6 and other components can be adjusted according to actual needs, and is not limited herein.

The embodiment of the application also provides tooth covering equipment which comprises the positioning and clamping device provided by any embodiment. This structure, the cover tooth equipment that adopts foretell positioning and clamping device presss from both sides tightly effectually to a plurality of machined parts 1 of treating, helps improving cover tooth effect.

The above description is intended only to serve as an alternative embodiment of the present application, and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1. Positioning and clamping device for the treatment machined part on the centre gripping supporting seat, its characterized in that includes:

the first clamping seat is used for supporting the supporting seat;

the second clamping seat is opposite to the first clamping seat;

the base supports the second clamping seat, and the middle position of the second clamping seat is hinged to the base;

and the driving assembly is connected with the base and used for driving the base to reciprocate so as to clamp the workpiece to be machined when the second clamping seat is close to the first clamping seat and remove the clamping of the workpiece to be machined when the second clamping seat is far away from the first clamping seat.

2. The positioning and clamping device as recited in claim 1, wherein: the positioning and clamping device further comprises two elastic pieces arranged on two sides of the hinged position of the second clamping seat and the base, one end of each elastic piece is abutted against the second clamping seat, and the other end of each elastic piece is abutted against the base.

3. The positioning and clamping device as claimed in claim 2, wherein: the second clamping seat is provided with two first clamping grooves for the two ends of the elastic pieces to extend into respectively, and the base is provided with two second clamping grooves for the two ends of the elastic pieces to extend into respectively.

4. The positioning and clamping device as recited in claim 1, wherein: the side surface of the second clamping seat facing the first clamping seat is provided with a first groove, and a buffering rubber pad is arranged in the first groove.

5. The positioning and clamping device as recited in claim 4, wherein: the first clamping seat is provided with a first positioning groove for allowing one end of the workpiece to be machined to extend into, and the second clamping seat is provided with a second positioning groove for allowing the other end of the workpiece to be machined to extend into.

6. The positioning and clamping device as recited in claim 5, wherein: and a third positioning groove for the workpiece to be machined to extend into is formed in the side surface, facing the first clamping seat, of the buffer rubber pad, and the third positioning groove is communicated with the second positioning groove.

7. The positioning and clamping device as claimed in any one of claims 1 to 6, wherein: and a second groove for the supporting seat to extend into is formed in the base.

8. The positioning and clamping device as recited in claim 7, wherein: the base comprises a fixed seat connected with the driving assembly and a sliding seat arranged on the fixed seat in a sliding manner; the middle position of the second clamping seat is hinged to the fixed seat, and the sliding seat is provided with a second groove.

9. The positioning and clamping device as claimed in any one of claims 1 to 6, wherein: the first clamping seat comprises a top seat, a base and an adjusting piece, wherein the top seat is opposite to the second clamping seat, the base supports the top seat, the adjusting piece is used for adjusting the distance between the top seat and the second clamping seat, the adjusting piece is installed on the base, and the adjusting piece is connected with the top seat.

10. Cover tooth equipment, its characterized in that: comprising a positioning and clamping device according to any of claims 1-9.

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