CN219379899U - Quick-change high-precision one-out-multiple-machine external clamping fixture - Google Patents

Abstract

The quick-change high-precision one-out-multi-machine outer clamping fixture comprises a supporting seat (4), a pressing structure (5) and a clamping assembly (200), wherein the clamping assembly (200) comprises a tooling plate (1), a base (2) and a side pressing plate (3), a plurality of groups of high-precision positioning structures are arranged at the bottom of the base (2) and the top of the supporting seat (4) in a vertically opposite mode, each group of high-precision positioning structures consists of a guide sleeve (62) and a guide pillar (61), the pressing structure (5) is used for pressing down the tooling plate (1) to drive the guide pillar (61) and the guide sleeve (62) to be matched, and therefore the guide sleeve (62) is elastically deformed to achieve zero point positioning; the utility model can meet the requirement of mass production, can realize modularized assembly, effectively reduces the clamping times, greatly improves the processing efficiency, combines the high-precision positioning installation of the zero positioning guide post and the guide sleeve by applying the pressure exerted by the pressing structure, and can realize the high-precision exchange of the clamp.

Description

Quick-change high-precision one-out-multiple-machine external clamping fixture

Technical Field

The utility model relates to the technical field of precision clamps, in particular to a quick-change high-precision one-out-multiple-machine external clamping clamp.

Background

With the rapid development of mechanical industrialization, the numerical control machining efficiency is higher and higher, and the quality of the clamp system serving as an extremely important part in machine tool machining has an important influence on the machining precision and the production efficiency of workpieces. At present, a single product widely used in the market is processed by a clamp, and each time the product is on line, a person with a professional technology is required to replace a tool clamp, a milling clamp and a debugging clamp, so that the operation is complicated, the product is on line slowly, the repeated positioning precision is poor, the product processing efficiency is low, the equipment resources and the human resources are greatly occupied, huge waste is caused, and the time required for debugging is different due to different experiences of special technicians, so that the processing efficiency of a machine tool is influenced.

Disclosure of Invention

The utility model aims to solve the technical problems that the single product processing clamp in the prior art has the defects of poor repeated positioning precision, low product processing efficiency and the like, and provides a quick-change high-precision one-out-multi-machine-outer clamping clamp which is used for clamping a plurality of workpieces to process the processing parts in batches, and meanwhile, the clamp is clamped outside a machine tool, and the clamp can be exchanged inside the machine tool to realize high-precision zero point positioning installation.

The technical scheme adopted for solving the technical problems is as follows: the quick-change high-precision one-out-multiple-machine external clamping fixture is used for clamping a plurality of workpieces for batch processing and comprises a supporting seat and a pressing structure which are arranged outside a machine tool, and a clamping assembly which is detachably arranged on the upper part of the supporting seat;

the clamping assembly comprises a tooling plate, a base and a side pressing plate, wherein the tooling plate is detachably arranged on the upper part of the base, a plurality of recessed workpiece mounting grooves for horizontally placing a workpiece are formed in the upper part of the tooling plate, the workpiece mounting grooves are matched with the peripheral outline of the workpiece, gaps are reserved at the front side or/and the rear side of the tooling plate so that the peripheral outline part of the workpiece is exposed, and the side pressing plate is detachably arranged at the front side or the rear side of the base so as to press the workpiece at the gaps to lock the workpiece in the workpiece mounting grooves;

a plurality of groups of high-precision positioning structures are arranged at the bottom of the base and the top of the supporting seat in a vertically opposite manner, and each group of high-precision positioning structures consists of a zero positioning guide sleeve and a zero positioning guide post; the pressing structure is used for pressing down the tooling plate to drive the zero point positioning guide post and the zero point positioning guide sleeve to be matched, so that the zero point positioning guide sleeve is elastically deformed to realize zero point positioning.

Further, in the quick-change type high-precision one-out-multi-machine outer clamping fixture, the zero point positioning guide sleeve is divided into a guide sleeve mounting part and a guide sleeve sleeving part along the axial direction, the guide sleeve mounting part is used for being in interference fit with the bottom of the base or the top of the supporting seat, the outer ring and the inner ring of the guide sleeve sleeving part are conical surfaces, the conical surface of the inner ring gradually reduces in diameter in the direction close to the guide sleeve mounting part and is used for being matched with the outer ring of the zero point positioning guide post, and the conical surface of the outer ring gradually reduces in diameter in the direction far away from the guide sleeve mounting part and is used for providing deformation allowance for sleeving the zero point positioning guide post;

the zero positioning guide post is divided into a guide post mounting part and a guide post sleeving part along the axial direction, the outer ring of the guide post sleeving part is a conical surface, and the conical surface gradually reduces in diameter in the direction away from the guide post mounting part so as to be matched with the conical surface of the inner ring of the guide sleeve sleeving part.

Further, in the quick-change high-precision one-out-multi-machine outer clamping fixture, the guide sleeve sleeving part is provided with a plurality of gaps which are distributed at intervals in the circumferential direction of the guide sleeve sleeving part and used for absorbing the deformation amount when the zero point positioning guide post is sleeved.

Further, in the quick-change type high-precision one-out-multiple-machine external clamping fixture, the supporting seat comprises a bottom plate and two supporting plates, the two supporting plates are fixed at the positions close to two ends of the upper part of the bottom plate, the zero point positioning guide post is arranged on the upper end face of the supporting plate and in interference fit with the supporting plate, the lower end face of the supporting plate is fixedly arranged with the bottom plate, and a plurality of machine tool mounting holes are formed in the middle of the bottom plate and used for fixing the bottom plate on a machine tool;

zero positioning guide sleeves are embedded in the positions, close to the two ends, of the bottom of the base respectively, and the zero positioning guide sleeves are in interference fit with the base.

Further, in the quick-change high-precision one-out-multiple-machine external clamping fixture, the base is provided with a plurality of bolt mounting holes penetrating from the lower part to the upper part, the bottom of the tooling plate is provided with a plurality of corresponding internal threads, and the base and the tooling plate are locked by using a plurality of bolts based on the bolt mounting holes and the internal threads;

the base upper portion is provided with the pin mounting hole by both ends position, frock board bottom is provided with the pin mounting hole by both ends position, base and frock board are based on when utilizing the bolt assembly the pin mounting hole on base upper portion and the pin mounting hole of frock board bottom utilize the pin to realize the guide location.

Further, in the quick-change type high-precision one-out-multi-machine external clamping fixture, front and rear rows of workpiece mounting grooves are formed in the upper portion of the tooling plate, each row of workpiece mounting grooves are distributed at intervals along the length direction of the tooling plate, a row of notches corresponding to the front row of workpiece mounting grooves are formed in the front side of the tooling plate, a row of notches corresponding to the rear row of workpiece mounting grooves are formed in the rear side of the tooling plate, and one side pressing plate is respectively mounted on the front side and the rear side of the base.

Furthermore, in the quick-change high-precision one-out-multiple-machine external clamping fixture, the front side and the rear side of the base are respectively provided with an upper row of threaded holes and a lower row of threaded holes, the lower row of threaded holes are used for locking the side pressing plate and are arranged on the base, and the upper row of threaded holes are used for locking the side pressing plate so that the side pressing plate elastically deforms to lock the workpiece in the workpiece mounting groove.

Furthermore, in the quick-change high-precision one-out-multiple-machine external clamping fixture, positioning pin mounting holes are formed in positions, close to two ends, of the front side surface and the rear side surface of the base, positioning pin holes are formed in positions, close to two ends, of the side pressure plate respectively, and guide positioning is achieved by using positioning pins based on the positioning pin mounting holes and the positioning pin holes when the base and the side pressure plate are assembled by using bolts.

Further, in the quick-change high-precision one-out-multiple-machine external clamping fixture, the side pressing plate is composed of a continuous part and a row of separating parts which are connected to the same side of the continuous part and are arranged at intervals, a row of threaded holes are formed in the continuous part and are used for locking and installing the side pressing plate on a base, each separating part corresponds to one workpiece installation groove, and each separating part is provided with one threaded hole and is used for locking the separating part to enable the separating part to generate elastic deformation so as to lock the workpiece in the workpiece installation groove.

Furthermore, in the quick-change high-precision one-out-multi-machine external clamping fixture, the number of the pressing structures is two, the pressing structures are respectively positioned at the left side and the right side of the supporting seat, each pressing structure comprises an air cylinder bottom plate, a pneumatic telescopic air cylinder and a pressing block, the pneumatic telescopic air cylinder is fixedly arranged on the air cylinder bottom plate through bolts, the pressing block is fixedly arranged at the telescopic end of the pneumatic telescopic air cylinder, a plurality of bolt mounting holes are formed in the air cylinder bottom plate and used for locking the air cylinder bottom plate on a machine tool through bolts, and the pressing block is positioned above the end part of the tool plate.

The quick-change type high-precision one-out-multiple-machine external clamping fixture has the following beneficial effects: the utility model can firstly install batch workpieces to the clamping assembly, in particular to place batch workpieces into a plurality of workpiece installation grooves of a tooling plate, and lock the workpieces in the workpiece installation grooves by utilizing the side pressing plate; after the clamping component is assembled, the clamping component is integrally installed on the supporting seat, and a pressing structure is utilized to press the tooling plate downwards during installation, so that the zero point positioning guide post and the zero point positioning guide sleeve are driven to be matched, and the zero point positioning guide sleeve generates elastic deformation zero point positioning action; therefore, the utility model can meet the requirement of mass production, can realize modularized assembly, effectively reduces the clamping times, greatly improves the processing efficiency compared with a traditional single clamping fixture, combines the high-precision positioning installation of a zero positioning guide post and a guide sleeve by applying the pressure exerted by a pressing structure, and can realize the high-precision exchange of the fixtures so as to achieve the purpose of external clamping.

Drawings

For a clearer description of an embodiment of the utility model or of a technical solution in the prior art, the drawings that are needed in the description of the embodiment or of the prior art will be briefly described, it being obvious that the drawings in the description below are only embodiments of the utility model, and that other drawings can be obtained, without inventive effort, by a person skilled in the art from the drawings provided:

FIG. 1 is a front view of a quick-change high-precision one-out-multiple-machine external clamping fixture of the utility model;

FIG. 2 is a perspective view of the quick-change high-precision one-out-multiple-machine external clamping fixture of the utility model;

FIG. 3 is an exploded front view of the quick-change high-precision one-out-multiple-machine external clamping fixture of the present utility model;

FIG. 4 is an exploded perspective view of the quick-change high-precision one-out-multiple-machine external clamping fixture of the present utility model;

FIG. 5 is an exploded perspective view of the clamping assembly;

FIG. 6 is a perspective view of a high precision positioning structure;

FIG. 7 is a front view of a high precision positioning structure;

fig. 8 is a cross-sectional view of a high precision positioning structure.

Detailed Description

Aiming at the defects of poor repeated positioning precision, low product processing efficiency and the like of a clamp for processing a single product, the utility model provides a method for firstly mounting batch workpieces to a clamping assembly, particularly placing the batch workpieces into a plurality of workpiece mounting grooves of a tooling plate, and locking the workpieces in the workpiece mounting grooves by utilizing a side pressing plate; after the clamping component is assembled, the clamping component is integrally installed on the supporting seat, and a pressing structure is utilized to press the tooling plate downwards during installation, so that the zero point positioning guide post and the zero point positioning guide sleeve are driven to be matched, and the zero point positioning guide sleeve generates elastic deformation zero point positioning action; therefore, the utility model can meet the requirement of mass production, can realize modularized assembly, effectively reduces the clamping times, greatly improves the processing efficiency compared with a traditional single clamping fixture, combines the high-precision positioning installation of a zero positioning guide post and a guide sleeve by applying the pressure exerted by a pressing structure, and can realize the high-precision exchange of the fixtures so as to achieve the purpose of external clamping.

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Exemplary embodiments of the present utility model are illustrated in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the embodiments of the present utility model and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, and not limited to the technical solutions of the present application, and the embodiments of the present utility model and the technical features in the embodiments may be combined with each other without conflict.

Referring to fig. 1-5, the quick-change high-precision one-out-multiple-machine external clamping fixture is used for clamping a plurality of workpieces 100 for batch processing, the example of simultaneous processing of 20 products of the workpieces 100 is given in this embodiment, and of course, in other embodiments, the number of the workpieces 100 can be adjusted according to requirements, and the workpieces 100 are generally harder products, such as metal bases in this embodiment. The clamp includes a support base 4 and a pressing structure 5 mounted on the outside of the machine tool, and a clamping assembly 200 detachably mounted to an upper portion of the support base 4. During machining, the clamping assembly 200 can be assembled in the machine tool, the assembled clamping assembly 200 is mounted on the upper portion of the supporting seat 4 outside the machine tool, then the clamping assembly 200 is pressed down by the pressing structure 5, and then batch machining can be performed on the workpiece 100.

The clamping assembly 200 comprises a tooling plate 1, a base 2 and a side pressure plate 3. The tooling plate 1 is arranged at the upper part of the base 2, and two side pressure plates 3 are respectively arranged at the front side and the rear side of the base 2.

Wherein, frock board 1 is rectangular plate structure, and base 2 is a rectangle piece thicker than frock board 1, and the length, the width of base 2 are roughly equivalent with frock board 1, and frock board 1 detachably installs base 2 upper portion. Specifically, the base 2 is provided with a plurality of bolt mounting holes penetrating from the lower part to the upper part, and the bottom of the tooling plate 1 is provided with a plurality of corresponding internal threads for locking between the base 2 and the tooling plate 1 by using a plurality of bolts 91. The embodiment specifically comprises four bolt mounting holes and four internal threads, and the base 2 and the tooling plate 1 are locked by using four bolts 91 based on the bolt mounting holes and the internal threads. Further, the upper portion of the base 2 is provided with pin mounting holes near two ends, the bottom of the tooling plate 1 is provided with pin mounting holes near two ends, the pin mounting holes of the base 2 and the tooling plate 1 are used for mounting pins 8, and the pins 8 play a role in guiding and positioning so as to avoid mounting deviation. The base 2 and the tooling plate 1 are assembled by bolts 91, and guide positioning is realized by using pins 8 based on pin mounting holes in the upper part of the base 2 and pin mounting holes in the bottom of the tooling plate 1.

The tooling plate 1 is used for batch mounting of workpieces 100, a plurality of recessed workpiece mounting grooves 11 for horizontally placing the workpieces 100 are arranged at the upper part of the tooling plate, the workpiece mounting grooves 11 are matched with the peripheral outline of the workpieces 100, in this embodiment, the shape of the workpieces 100 is rectangular, so that the corresponding workpiece mounting grooves 11 are also rectangular grooves, and the workpieces can be in other shapes, such as round or even irregular patterns. In addition, the front side and the rear side of the tooling plate 1 are reserved with notches so that the peripheral outline portion of the workpiece 100 is exposed, that is, the peripheral groove walls of the workpiece mounting groove 11 are not rectangular in a closed loop, for example, in this embodiment, the workpiece mounting groove 11 is equivalent to a rectangle, one side is less than the rectangle, if the workpiece 100 is in other patterns, only the workpiece 100 is exposed by ensuring that a notch is left on the peripheral groove walls of the workpiece mounting groove 11 at the front side and the rear side of the tooling plate 1, and the workpiece 100 is exposed due to the existence of the notch. In this embodiment, there are specifically a front row of workpiece mounting grooves 11 and a rear row of workpiece mounting grooves 11, each row of workpiece mounting grooves 11 is specifically 10 workpiece mounting grooves 11, each row of workpiece mounting grooves 11 is uniformly distributed at intervals along the length direction of the tooling plate 1, a row of notches corresponding to the front row of workpiece mounting grooves 11 are formed on the front side of the tooling plate 1, and a row of notches corresponding to the rear row of workpiece mounting grooves 11 are formed on the rear side of the tooling plate 1.

After the tooling plate 1 and the base 2 are assembled, 20 workpieces 100 are placed in the tooling plate 1, one side pressing plate 3 is respectively arranged on the front side and the rear side of the base 2, and the workpieces 100 are locked by the side pressing plates 3. Specifically, the length of the side pressure plate 3 corresponds to the length of the tooling plate 1 and the length of the base 2, the width of the side pressure plate 3 corresponds to the thickness of the tooling plate 1 plus the thickness of the base 2, and the two side pressure plates 3 clamp the whole body of the tooling plate 1 and the base 2 from the front and rear sides after assembly. In this embodiment, the two side pressure plates 3 are detachably mounted on the front side and the rear side of the base 2 by bolts 92 respectively to block a row of notches on the front side and a row of notches on the rear side of the tooling plate 1, and the workpieces 100 are pressed at the notches to lock the front and rear two rows of workpieces 100 in the front and rear two rows of workpiece mounting grooves 11.

More specifically, the front side and the rear side of the base 2 are respectively provided with an upper row of screw holes and a lower row of screw holes, the lower row of screw holes are used for locking and mounting the side pressure plate 3 on the base 2, and the upper row of screw holes are used for locking the side pressure plate 3 so that the side pressure plate 3 generates elastic deformation to lock the workpiece 100 in the workpiece mounting groove 11. In order to better generate elastic deformation to compress the workpiece 100, the side pressing plate 3 is approximately similar to a comb shape, and is composed of a continuous part and a row of separating parts connected to the same side of the continuous part at intervals, wherein the continuous part is provided with a row of threaded holes for the side pressing plate 3 to be locked and installed on the base 2, each separating part corresponds to one workpiece mounting groove 11, and each separating part is provided with a threaded hole for locking the separating part to generate elastic deformation to lock the workpiece 100 in the workpiece mounting groove 11, so that each separating part can be compressed independently.

Further, locating pin mounting holes are formed in the front side surface and the rear side surface of the base 2 close to the two ends, locating pin holes are formed in the two ends of the side pressure plate respectively, the locating pin mounting holes and the locating pin holes are jointly used for mounting pins, the locating pin mounting holes and the locating pin holes play a role in guiding and positioning, and mounting deviation is avoided. The base 2 and the side press plate 3 are guided and positioned by the positioning pin 7 based on the positioning pin mounting hole and the positioning pin hole when assembled by the bolts 92.

Of course, in other embodiments, only one row of workpiece mounting slots 11 is possible and is within the scope of the present utility model. When there is only one row of workpiece mounting grooves 11, only one side pressing plate 3 is needed, or the workpiece mounting grooves 11 are changed to be provided with gaps on two sides to expose the workpieces 100, and the front side pressing plate 3 and the rear side pressing plate 3 clamp the unified workpieces 100 together.

After the side pressing plate 3 is installed inside the machine tool, the clamping assembly 200 is obtained, and then the clamping assembly 200 is integrally taken out of the machine tool and is installed on the supporting seat 4, and the installation and the positioning of the clamping assembly 200 and the supporting seat 4 are realized through a plurality of groups of high-precision positioning structures. Wherein, the bottom of the base 2 and the top of the supporting seat 4 are vertically and oppositely provided with a plurality of groups of high-precision positioning structures, each group of high-precision positioning structures is composed of a zero point positioning guide sleeve 62 and a zero point positioning guide post 61, and the zero point positioning guide sleeve 62 and the zero point positioning guide post 61 are made of S136 plastic mold steel materials. In this embodiment, the bottom of the base 2 is embedded with zero positioning guide sleeves 62 near two ends, and specifically, mounting holes of the zero positioning guide sleeves 62 are formed near two ends of the bottom of the base 2, so that the zero positioning guide sleeves 62 are mounted in an interference fit manner. The top of the supporting seat 4 is correspondingly provided with a plurality of zero positioning guide posts 61, and the zero positioning guide posts are also installed by interference fit. In other embodiments, the upper and lower positions of the zero point positioning guide sleeve 62 and the zero point positioning guide post 61 may be exchanged, that is, the bottom of the base 2 is provided with a plurality of zero point positioning guide posts 61, and the top of the supporting seat 4 is correspondingly provided with a plurality of zero point positioning guide sleeves 62, which is a simple modification of the embodiment and also falls within the protection scope of the present utility model.

Specifically, the support seat 4 includes a rectangular bottom plate 41 horizontally arranged and two rectangular support plates 42 vertically arranged, and the two support plates 42 are fixed at positions near two ends of the upper portion of the bottom plate 41. A plurality of machine tool mounting holes are formed in the middle of the bottom plate 41 in a penetrating manner and used for fixing the bottom plate 41 on a machine tool, specifically two bolt mounting holes are formed in the left end and the right end of the bottom plate 41 in a penetrating manner and used for connecting and mounting the bottom plate 41 with the supporting plate 42 through bolts. The lower end surface of the supporting plate 42 is fixed with the bottom plate 41 through bolt installation, the zero point positioning guide post 61 is installed on the upper end surface of the supporting plate 42 and is in interference fit with the supporting plate 42, and the function of the zero point positioning guide sleeve 62 is that the zero point positioning guide post 61 is matched when the base 2 is installed on the supporting plate 42, so that the zero point positioning guide sleeve 62 generates elastic deformation, zero point positioning is realized, and quick-change clamping guiding function is achieved. Specifically, the upper end of the supporting plate 42 is provided with a mounting hole of the zero-point positioning guide post 61 for mounting the zero-point positioning guide post 61, and the lower end of the supporting plate 42 is provided with a threaded connection hole for mounting the bottom plate 41.

More specifically, referring to fig. 6 to 8, the zero positioning guide sleeve 62 is divided into a guide sleeve mounting portion 62a and a guide sleeve sleeving portion 62b along the axial direction, the radial dimension of the outer ring of the guide sleeve mounting portion 62a is larger than the radial dimension of the outer ring of the guide sleeve sleeving portion 62b, the guide sleeve mounting portion 62a is used for being in interference fit with the bottom of the base 2, the outer ring and the inner ring of the guide sleeve sleeving portion 62b are conical surfaces, the conical surface of the inner ring gradually reduces in the direction approaching the guide sleeve mounting portion 62a for being matched with the outer ring of the zero positioning guide post 61, and the conical surface of the outer ring gradually reduces in the direction away from the guide sleeve mounting portion 62a for providing a deformation allowance for sleeving of the zero positioning guide post 61.

The zero positioning guide post 61 is divided into a cylindrical guide post mounting portion 61a and a truncated cone-shaped guide post sleeving portion 61b along the axial direction, the radial dimension of the outer ring of the guide post mounting portion 61a is smaller than that of the outer ring of the guide post sleeving portion 61b, the outer ring of the guide post sleeving portion 61b is a conical surface, and the conical surface gradually reduces in the direction away from the guide post mounting portion 61a so as to be matched with the conical surface of the inner ring of the guide sleeve sleeving portion 62 b.

Preferably, the guide sleeve sleeving part 62b is provided with a plurality of gaps 611 which are distributed at intervals along the circumferential direction, and the gaps are used for absorbing the deformation amount when the zero point positioning guide post 61 is sleeved.

The pressing structure 5 is used for pressing the tooling plate 1 downwards to drive the zero point positioning guide post 61 and the zero point positioning guide sleeve 62 to be matched, so that the zero point positioning guide sleeve 62 generates elastic deformation to realize the zero point positioning function. Specifically, the number of the pressing structures 5 is two, and the pressing structures are respectively located at the left side and the right side of the supporting seat 4, and each pressing structure 5 comprises a horizontally arranged cylinder bottom plate 51, a pneumatic telescopic cylinder 52 fixedly arranged on the cylinder bottom plate 51 through bolt installation, and a pressing block 53 fixedly arranged on the telescopic end of the pneumatic telescopic cylinder 52 through a bolt 95. Two bolt mounting holes are formed in the cylinder bottom plate 51 and used for locking the cylinder bottom plate 51 on a machine tool through bolts 93, and the pressing block 53 is located above the end portion of the tool plate 1. The cylinder bottom plate 51 is also provided with four bolt mounting holes for fixing the pneumatic telescopic cylinder 52, the pneumatic telescopic cylinder 52 is mounted and fixed on the cylinder bottom plate 51 through bolts 94, the pneumatic telescopic cylinder 52 realizes up-and-down reciprocating motion through compressed air, and the pressing block 53 presses the tooling plate 1 downwards, so that the zero point positioning guide post 61 and the zero point positioning guide sleeve 62 are matched, the zero point positioning guide sleeve 62 is forced to elastically deform, and high-precision mounting and positioning of the quick-change clamp are realized. It will be appreciated that the pneumatic telescoping cylinder 52 may be replaced with other lifting drive mechanisms, such as electric cylinders, hydraulic cylinders, and the like.

The assembly process of this embodiment is: firstly, installing a tooling plate 1 on the upper part of a base 2 by using bolts 91 in a machine tool, guiding and positioning by using pins 8 in the installation process, and placing 20 workpieces 100 into 20 workpiece installation grooves 11 of the tooling plate 1 after the installation is finished; then, the lower row of bolts 92 are used for installing the two side pressure plates 3 on the front side and the rear side of the tooling plate 1, positioning pins 7 are used for guiding and positioning in the installation process, and then the upper row of bolts 92 are used for locking the workpiece 100, so that the assembled clamping assembly 200 is completed; then the clamping assembly 200 is moved out of the machine tool and placed on the supporting plate 42, the zero point positioning guide post 61 and the zero point positioning guide sleeve 62 are primarily matched, then the pneumatic telescopic cylinder 52 is started, the pneumatic telescopic cylinder 52 presses the tooling plate 1 down, the zero point positioning guide sleeve 62 is forced to elastically deform, the zero point positioning guide post 61 and the zero point positioning guide sleeve 62 are completely matched, and high-precision installation and positioning of the quick-change clamp are realized.

The beneficial effects of this embodiment are: the integral mechanism of the embodiment is precise and compact in design, strong in structural rigidity, high in repeated positioning precision of clamping, capable of achieving external clamping and achieving the exchange of repeated positioning with high precision more than ten thousand times, and the exchange error is within 0.002mm, compared with the traditional fixed type one-out-multiple clamps, the fixture can also ensure the advantage of consistent performance in all aspects including the quality characteristics of products, and can improve the consistency of finished products to 99.98% for mass high-precision manufacturing; the assembly is simple, the interchangeability of accessories is strong, the clamping assembly 200 can be used as a whole for interchange, the processing manufacturability is good, the manufacturing is simple, and the popularization is facilitated; the clamping mode of one outlet 20 is adopted, so that the processing efficiency is greatly improved, the equipment utilization rate is improved, the clamping time is saved, the manual debugging operation cost is reduced, and the economic benefit of enterprises is improved.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, 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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various constituent elements, but these constituent elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first component may be termed a second component, and, similarly, a second component may be termed a first component, without departing from the scope of the present utility model.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.

Claims (10)

1. A quick-change high-precision one-out-multiple-machine external clamping fixture for clamping a plurality of workpieces (100) for batch processing, which is characterized by comprising a supporting seat (4) and a pressing structure (5) which are arranged outside a machine tool, and a clamping assembly (200) which is detachably arranged on the upper part of the supporting seat (4);

the clamping assembly (200) comprises a tooling plate (1), a base (2) and a side pressure plate (3), wherein the tooling plate (1) is detachably arranged on the upper part of the base (2), a plurality of recessed workpiece mounting grooves (11) for horizontally placing the workpiece (100) are formed in the upper part of the tooling plate (1), the workpiece mounting grooves (11) are matched with the peripheral outline of the workpiece (100), gaps are reserved at the front side or/and the rear side of the tooling plate (1) so that the peripheral outline part of the workpiece (100) is exposed, and the side pressure plate (3) is detachably arranged at the front side or the rear side of the base (2) so as to press the workpiece (100) at the positions of the gaps to lock the workpiece (100) in the workpiece mounting grooves (11);

a plurality of groups of high-precision positioning structures are arranged at the bottom of the base (2) and the top of the supporting seat (4) in a vertically opposite mode, and each group of high-precision positioning structures consists of a zero point positioning guide sleeve (62) and a zero point positioning guide post (61); the pressing structure (5) is used for pressing the tooling plate (1) downwards to drive the zero point positioning guide post (61) and the zero point positioning guide sleeve (62) to be matched, so that the zero point positioning guide sleeve (62) generates elastic deformation to realize zero point positioning.

2. The quick-change high-precision one-out-multi-machine outer clamping fixture according to claim 1, wherein the zero-point positioning guide sleeve (62) is divided into a guide sleeve mounting part (62 a) and a guide sleeve sleeving part (62 b) along the axial direction, the guide sleeve mounting part (62 a) is used for being in interference fit with the bottom of the base (2) and the top of the supporting seat (4), the outer ring and the inner ring of the guide sleeve sleeving part (62 b) are conical surfaces, the conical surface of the inner ring gradually reduces in the direction close to the guide sleeve mounting part (62 a) so as to be used for being matched with the outer ring of the zero-point positioning guide post (61), and the conical surface of the outer ring gradually reduces in the direction far away from the guide sleeve mounting part (62 a) so as to be used for providing a deformation allowance for sleeving of the zero-point positioning guide post (61);

the zero point positioning guide pillar (61) is divided into a guide pillar mounting part (61 a) and a guide pillar sleeving part (61 b) along the axial direction, the outer ring of the guide pillar sleeving part (61 b) is a conical surface, and the conical surface gradually reduces in diameter in the direction away from the guide pillar mounting part (61 a) so as to be matched with the conical surface of the inner ring of the guide sleeve sleeving part (62 b).

3. The quick-change high-precision one-out-multiple-machine outer clamping fixture according to claim 2, wherein the guide sleeve sleeving part (62 b) is provided with a plurality of gaps (611) which are distributed in a circumferential direction at intervals and are used for absorbing deformation amount during sleeving of the zero point positioning guide post (61).

4. The quick-change high-precision one-out-multiple-machine-outer clamping fixture according to claim 1, wherein the supporting seat (4) comprises a bottom plate (41) and two supporting plates (42), the two supporting plates (42) are fixed at positions close to two ends on the upper part of the bottom plate (41), the zero point positioning guide post (61) is mounted on the upper end face of the supporting plate (42) and in interference fit with the supporting plate (42), the lower end face of the supporting plate (42) is fixedly mounted on the bottom plate (41), and a plurality of machine tool mounting holes are formed in the middle of the bottom plate (41) and used for fixing the bottom plate (41) on a machine tool;

zero positioning guide sleeves (62) are embedded in the positions, close to the two ends, of the bottom of the base (2), and the zero positioning guide sleeves (62) are in interference fit with the base (2).

5. The quick-change high-precision one-out-multiple-machine external clamping fixture according to claim 1, wherein the base (2) is provided with a plurality of bolt mounting holes penetrating from the lower part to the upper part, the bottom of the tooling plate (1) is provided with a plurality of corresponding internal threads, and a plurality of bolts are used for locking between the base (2) and the tooling plate (1) based on the bolt mounting holes and the internal threads;

the base (2) upper portion is provided with the pin mounting hole by both ends position, frock board (1) bottom is provided with the pin mounting hole by both ends position, base (2) and frock board (1) are based on when utilizing the bolt assembly the pin mounting hole on base (2) upper portion and the pin mounting hole of frock board (1) bottom utilize pin (8) to realize the direction location.

6. The quick-change high-precision one-out-multiple-machine external clamping fixture according to claim 1, wherein front and rear two rows of workpiece mounting grooves (11) are formed in the upper portion of the tool plate (1), each row of workpiece mounting grooves (11) are distributed at intervals along the length direction of the tool plate (1), and one side pressing plate (3) is respectively mounted on the front side and the rear side of the base (2).

7. The quick-change high-precision one-out-multiple-machine external clamping fixture according to claim 6, wherein the front side and the rear side of the base (2) are respectively provided with an upper row of threaded holes and a lower row of threaded holes, the lower row of threaded holes are used for locking and mounting the side pressing plate (3) on the base (2), and the upper row of threaded holes are used for locking the side pressing plate (3) so that the side pressing plate (3) generates elastic deformation to lock the workpiece (100) in the workpiece mounting groove (11).

8. The quick-change high-precision one-out-multiple-machine external clamping fixture according to claim 7, wherein positioning pin mounting holes are formed in positions, close to two ends, of the front side surface and the rear side surface of the base (2), positioning pin holes are formed in positions, close to two ends, of the side pressure plate (3), and the base (2) and the side pressure plate (3) are guided and positioned by using positioning pins based on the positioning pin mounting holes and the positioning pin holes when assembled by using bolts.

9. The quick-change high-precision one-out-multi-machine external clamping fixture according to claim 7, wherein the side pressing plate (3) is composed of a continuous part and a row of separating parts connected to the same side of the continuous part at intervals, a row of threaded holes are formed in the continuous part and used for locking and mounting the side pressing plate (3) on a base (2), each separating part corresponds to one workpiece mounting groove (11), and each separating part is provided with one threaded hole and used for locking the separating part to enable the separating part to elastically deform so as to lock the workpiece (100) in the workpiece mounting groove (11).

10. The quick-change high-precision one-out-multi-machine external clamping fixture according to claim 1, wherein the number of the pressing structures (5) is two, the pressing structures are respectively positioned at the left side and the right side of the supporting seat (4), each pressing structure (5) comprises a cylinder bottom plate (51), a pneumatic telescopic cylinder (52) fixedly arranged on the cylinder bottom plate (51) through bolt installation, and a pressing block (53) fixedly arranged at the telescopic end of the pneumatic telescopic cylinder (52), the cylinder bottom plate (51) is provided with a plurality of bolt installation holes for locking the cylinder bottom plate (51) on a machine tool through bolts, and the pressing block (53) is positioned above the end part of the tool plate (1).