CN217728519U

CN217728519U - Workpiece positioning device

Info

Publication number: CN217728519U
Application number: CN202221871387.4U
Authority: CN
Inventors: 聂武; 陆晓峰; 周欢
Original assignee: Suzhou JQS Info Tech Co Ltd
Current assignee: Suzhou Jiaqishi Technology Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-11-04
Anticipated expiration: 2032-07-13

Abstract

The application relates to the technical field of positioning, in particular to a workpiece positioning device which comprises a clamping push block, an elastic piece, a clamping positioning piece and a base, wherein at least one workpiece positioning station is arranged on the clamping positioning piece; the clamping push block is provided with a clamping end, and the clamping end faces the workpiece positioning station and is matched with the workpiece positioning station; the clamping push block is connected with the base in a sliding mode, the elastic piece is connected with the clamping push block in a matched mode along the elastic direction, and the elastic direction of the elastic piece is the same as the sliding direction of the clamping push block. The workpiece positioning device provided by the application improves the stability of positioning of the workpiece in the positioning device.

Description

Workpiece positioning device

Technical Field

The application relates to the technical field of positioning, in particular to a workpiece positioning device.

Background

In automation equipment, a tiny workpiece to be machined is often required to be accurately positioned, the current positioning device suitable for the tiny workpiece generally positions the tiny workpiece in a copying positioning mode, but the tiny workpiece is positioned only in the copying positioning mode, the problem of unreliable positioning often exists, particularly, in the conveying process, the tiny workpiece is positioned only in the copying positioning mode, the workpiece is easy to fall off due to vibration, or the workpiece deviates from a specified position, so that the subsequent process cannot be completed or the product is poor, and the positioning device is required not to be too large because the workpiece required to be positioned is too small.

Accordingly, there is a need to provide an improved workpiece positioning device to address the above-mentioned problems.

Disclosure of Invention

In order to solve the above-mentioned prior art problems, the present application discloses a workpiece positioning device, which includes a clamping push block, an elastic member, a clamping positioning member and a base, wherein the clamping positioning member is provided with at least one workpiece positioning station, and the clamping push block, the elastic member and the clamping positioning member are arranged on the base; the clamping push block is provided with a clamping end, and the clamping end faces the workpiece positioning station and is matched with the workpiece positioning station; the clamping push block is connected with the base in a sliding mode, the elastic piece is connected with the clamping push block in a matched mode along the elastic direction, and the elastic direction of the elastic piece is the same as the sliding direction of the clamping push block.

Furthermore, a clamping position is arranged on the clamping end and corresponds to the position of the workpiece positioning station.

Furthermore, the clamping position is a clamping groove, and a groove wall of the clamping groove is provided with a guide inclined plane.

Furthermore, a first sinking platform and a second sinking platform which are communicated are arranged on the workpiece positioning station, the first sinking platform is matched with the clamping end, and the second sinking platform is matched with the target workpiece; the second sinking platform protrudes out of the first sinking platform along the direction far away from the clamping end.

Furthermore, a positioning groove is formed in the second sinking platform and matched with the target workpiece.

Furthermore, a guide structure is arranged on the base, a guide groove is formed in one of the guide structure and the clamping push block, and a sliding connecting portion matched with the guide groove is formed in the other one of the guide structure and the clamping push block.

Furthermore, an elastic piece connecting position is arranged on the clamping and pushing block and is abutted against the elastic piece.

Furthermore, the workpiece positioning device further comprises a plurality of clamping push blocks, a plurality of elastic pieces and a plurality of pushing hands, and the pushing hands are fixedly connected with the plurality of clamping push blocks respectively.

Further, the carrier bench is provided with a clamping concave table, and the base and the clamping positioning piece are matched with the clamping concave table.

Furthermore, the clamping push block is further provided with an abutting end, the abutting end deviates from the clamping end, an abutting surface is arranged on the clamping concave table, and when the clamping end abuts against the workpiece positioning station, the abutting end is separated from the abutting surface.

The application provides a work piece positioner, brings following beneficial effect at least:

1. the elastic piece is connected with the clamping push block in a matched mode along the elastic direction, and the elastic direction of the elastic piece is arranged in the same direction as the sliding direction of the clamping push block, so that the workpiece is not prone to falling off due to vibration in the positioning device, and the work efficiency of the positioning device is improved while the positioning stability of the positioning device for the workpiece is improved.

2. Through set up the centre gripping position on pressing from both sides tight ejector pad, not only further improvement positioner can fix a position not unidimensional work piece through setting up different centre gripping positions moreover to the positional stability of work piece, improved positioner's commonality to positioner's manufacturing cost has been reduced.

3. The guide structure is arranged on the base, so that the clamping push block slides along the preset direction, and the working efficiency of the workpiece positioning device is improved.

4. Through set up a plurality of tight ejector pads of clamp, a plurality of elastic component and pushing hands portion in work piece positioner, and the pushing hands portion respectively with a plurality of tight ejector pads fixed connection of clamp, can make the device press from both sides tight location to a plurality of work pieces simultaneously through a pushing hands portion promptly, not only saved the manpower, also improved positioner's work efficiency simultaneously.

Drawings

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

FIG. 1: the overall structure schematic diagram of the workpiece positioning device provided by the embodiment of the application;

FIG. 2: the workpiece positioning device provided by the embodiment of the application is not used for clamping a target workpiece;

FIG. 3: the structure schematic diagram of the workpiece positioning device and the target workpiece provided by the embodiment of the application;

FIG. 4: the structure schematic diagram of the workpiece positioning device and the target workpiece provided by the embodiment of the application;

FIG. 5: the structure schematic diagram of the cylindrical product provided by the embodiment of the application;

FIG. 6: the structure schematic diagram of a clamping positioning piece in the workpiece positioning device provided by the embodiment of the application;

FIG. 7: the front view schematic diagram of the structure of the clamping push block in the workpiece positioning device provided by the embodiment of the application;

FIG. 8: the structural section of the clamping push block in the workpiece positioning device provided by the embodiment of the application is shown;

FIG. 9: the structure schematic diagram of a base in a workpiece positioning device provided by the embodiment of the application;

FIG. 10: the embodiment of the application provides a cross section of a base structure in a workpiece positioning device;

in the figure: 1-clamping push block, 2-elastic piece, 3-clamping positioning piece, 4-base, 5-carrier table, 11-clamping position, 12-elastic piece connecting position, 31-workpiece positioning station, 41-guiding structure, 311-positioning groove, F1-elastic force, F2-external force and a-cylindrical product.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. 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 application.

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. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product, or device.

The embodiments are described below with reference to the drawings, which do not limit the contents of the claims.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-10, an embodiment of the present application provides a workpiece positioning device, which includes a clamping and pushing block 1, an elastic member 2, a clamping and positioning member 3, and a base 4, wherein the clamping and positioning member 3 is provided with at least one workpiece positioning station 31, and the clamping and pushing block 1, the elastic member 2, and the clamping and positioning member 3 are provided on the base 4; the clamping push block 1 is provided with a clamping end, and the clamping end faces the workpiece positioning station 31 and is matched with the workpiece positioning station 31; the clamping push block 1 is connected with the base 4 in a sliding mode, the elastic piece 2 is connected with the clamping push block 1 in a matched mode along the elastic direction, and the elastic direction of the elastic piece 2 is the same as the sliding direction of the clamping push block 1. Therefore, the elastic piece is connected with the clamping push block in a matched mode along the elastic direction, and the elastic direction of the elastic piece is arranged in the same direction as the sliding direction of the clamping push block, so that the workpiece is not prone to falling off due to vibration in the positioning device, and the work efficiency of the positioning device is improved while the positioning stability of the positioning device for the workpiece is improved.

In some embodiments, the clamping end is provided with a clamping position 11, and the clamping position 11 is arranged corresponding to the position of the workpiece positioning station 31.

Specifically, the clamping position 11 is a clamping groove, and a groove wall of the clamping groove is provided with a guide inclined plane.

In this embodiment, through set up the centre gripping position on pressing from both sides tight ejector pad, not only further improvement positioner can fix a position not unidimensional work piece through setting up different centre gripping positions moreover to the positional stability of work piece, improved positioner's commonality to positioner's manufacturing cost has been reduced.

In some embodiments, the workpiece positioning station 31 is provided with a first sinking platform and a second sinking platform which are communicated, the first sinking platform is arranged in a matching manner with the clamping end, and the second sinking platform is arranged in a matching manner with the target workpiece; the second sinking platform protrudes out of the first sinking platform along the direction far away from the clamping end.

Specifically, the first sinking platform is used for positioning the target workpiece in the Z direction, and the second sinking platform is used for positioning the target workpiece in the X direction and the Y direction.

In some embodiments, the second sinking platform is provided with a positioning groove 311, and the positioning groove 311 is matched with the target workpiece.

Specifically, the positioning groove 311 is configured to be contoured to the target workpiece being positioned.

In this embodiment, by providing the positioning groove 311 on the second stage, the positioning stability of the target workpiece can be further improved.

In some embodiments, the base 4 is provided with a guiding structure 41, and the guiding structure 41 and the clamping pushing block 11 are alternatively provided with a guiding groove, and the other is provided with a sliding connection portion matched with the guiding groove.

Specifically, the guide structure 41 is provided with a guide groove, and the clamping and pushing block 1 is provided with a sliding connection portion, which is accommodated in the guide groove and is slidably connected with the guide groove.

In the embodiment, under the action of external force, the clamping and pushing block can slide in the guide groove, so that the convenience of operation is improved, and the working efficiency of the workpiece positioning device is improved.

In other embodiments, the clamping and pushing block 1 is provided with a guide groove, and the guide structure 41 is provided with a sliding connection portion, and the sliding connection portion is slidably connected with the guide groove.

In some embodiments, the clamping and pushing block 1 is provided with an elastic member connecting position 12, and the elastic member connecting position 12 abuts against the elastic member 2.

Specifically, a counter bore structure is arranged on one side, away from the clamping end, of the clamping push block 1, one end of the elastic piece 2 abuts against the bottom of the counter bore structure, and the other end of the elastic piece is fixed on the carrier table 5.

In this embodiment, when the external force pushes the clamping pushing block 1 to move away from the clamping positioning element 3, the elastic element 2 is compressed by the force, and when the external force is withdrawn, the clamping pushing block 1 is under the elastic force of the elastic element 2, so that the clamping end of the clamping pushing block 1 abuts against the clamping positioning element 3. The work efficiency of the workpiece positioning device is further improved under the condition that the workpiece positioning stability is met.

In some embodiments, the workpiece positioning device further comprises a plurality of clamping push blocks 1, a plurality of elastic members 2 and a push hand part, wherein the push hand part is fixedly connected with the plurality of clamping push blocks respectively.

In this embodiment, a plurality of tight ejector pad 1 of clamp and a plurality of elastic component 2 one-to-one cooperation setting, the pushing hands portion respectively with a plurality of tight ejector pad fixed connection that press from both sides, when external force promoted the pushing hands portion motion, the pushing hands portion drove a plurality of tight ejector pad motions of clamp, can make the device press from both sides tight location to a plurality of target work pieces simultaneously through a pushing hands portion promptly, saved and fixed a position required time respectively to a plurality of target work pieces, and then saved the manpower, also improved positioner's work efficiency simultaneously.

In other embodiments, a plurality of workpiece positioning stations 31 are correspondingly disposed on the clamping positioner 3 for matching with a plurality of clamping push blocks 1.

In some embodiments, the workpiece positioning device further comprises a carrier table 5, a clamping concave table is arranged on the carrier table 5, and the base 4 and the clamping positioning element 3 are matched with the clamping concave table.

Specifically, the base 4 and the clamping positioning member 3 are both fixedly installed in the clamping concave table, one end of the elastic member 2 is protrudingly accommodated at the elastic member connecting position 12 on the clamping push block 1, and the other end is fixed on the side wall of the clamping concave table.

In the embodiment, the clamping concave table structure is arranged on the carrier table 5, so that the structure of the workpiece positioning device is more compact, the positioning of the micro component is more facilitated, and the stability of positioning the micro component is improved.

In some embodiments, the clamping push block 1 is further provided with an abutting end, the abutting end is separated from the clamping end, and the clamping concave table is provided with an abutting surface, and when the clamping end abuts against the workpiece positioning station 31, the abutting end is separated from the abutting surface.

Specifically, when the clamping end abuts against the workpiece positioning station 31, the distance between the abutting end and the abutting surface is the movement stroke of the clamping push block 1, and when the clamping end abuts against the workpiece positioning station 31, the elastic force on the elastic piece 2 still continues to act on the clamping push block 1, so that the clamping force is continuously provided for the target workpiece, and the stability of the workpiece positioning device for clamping and positioning the target workpiece is further improved.

4. The workpiece positioning device is provided with the plurality of clamping push blocks, the plurality of elastic pieces and the push hand parts, and the push hand parts are fixedly connected with the plurality of clamping push blocks respectively, so that the device can clamp and position a plurality of workpieces through one push hand part, manpower is saved, and the working efficiency of the positioning device is improved.

The operation process of the workpiece positioning device disclosed by the application is shown in fig. 1-4, and comprises the following specific steps:

in the state that the workpiece positioning device does not position and clamp the workpiece, as shown in fig. 2, the base 4 and the clamping positioning element 3 are both fixedly installed in the clamping concave table of the carrier table 5, the clamping end of the clamping push block 1 abuts against the workpiece positioning station 31 of the clamping positioning element 3 under the action of the elastic element 2, and the abutting end of the clamping push block 1 is separated from the abutting surface of the clamping concave table.

When the direction of F2 is as shown in fig. 4 under the action of the external force 2F, the clamping push block 1 slides along the guide structure 41 on the base 4 in the direction away from the clamping positioning element 3, the elastic element 2 is compressed under the force until the abutting end of the clamping push block 1 abuts against the abutting surface of the clamping concave table, at this time, the distance between the clamping push block 1 and the clamping positioning element 3 is the largest, the target workpiece can be placed on the first concave table of the clamping positioning element 3 through the manipulator, and part of the sidewall of the target workpiece abuts against the sidewall of the second concave table.

After the external force F2 is removed, the clamping and pushing block 1 is under the action of the elastic force F1 generated by the elastic member 2, and the direction of F1 is as shown in fig. 3, so that the clamping and pushing block 1 slides along the guide structure 41 on the base 4 toward the clamping and positioning member 3 until the guide inclined plane of the clamping groove arranged on the clamping and pushing block 1 abuts against the side wall of the target workpiece, thereby completing the positioning and clamping operation on the target workpiece, and enabling the target workpiece not to fall off from the positioning device due to the influence of vibration and the like in the process of conveying the target workpiece by the workpiece positioning device, thereby improving the positioning stability of the target workpiece.

When the external force F2 acts on the clamping and pushing block 1 again and pushes the clamping and pushing block 1 to slide along the guiding structure 41 on the base 4 in the direction away from the clamping and positioning element 3, the elastic element 2 is further compressed by the force until the abutting end of the clamping and pushing block 1 abuts against the abutting surface of the clamping concave table, at this time, the distance between the clamping and pushing block 1 and the clamping and positioning element 3 is the largest, and the target workpiece can be taken out of the positioning device through the manipulator to perform the operation of the next step.

In the whole process of clamping the target workpiece, under the common action of the elastic part 2, the clamping groove on the clamping push block 1 and the workpiece positioning station 31 arranged on the clamping positioning part 3, the workpiece is not easy to fall off due to vibration in the positioning device, and the work efficiency of the positioning device is improved while the positioning stability of the positioning device on the workpiece is improved.

Example 1

Referring to fig. 1-10, the present embodiment provides a workpiece positioning device, which includes a clamping pushing block 1, an elastic member 2, a clamping positioning member 3 and a base 4, wherein the clamping positioning member 3 is provided with at least one workpiece positioning station 31, and the clamping pushing block 1, the elastic member 2 and the clamping positioning member 3 are disposed on the base 4; the clamping push block 1 is provided with a clamping end, and the clamping end faces the workpiece positioning station 31 and is matched with the workpiece positioning station 31; the clamping push block 1 is connected with the base 4 in a sliding mode, the elastic piece 2 is connected with the clamping push block 1 in a matched mode along the elastic direction, and the elastic direction of the elastic piece 2 is the same as the sliding direction of the clamping push block 1.

Specifically, in the present embodiment, the workpiece positioning device is described by taking an example in which the workpiece positioning device includes three clamping and pushing blocks 1 and three elastic members 2.

Specifically, the three clamping and pushing blocks 1 and the three elastic pieces 2 are correspondingly arranged one by one,

specifically, the elastic member 2 may be a return spring, and the target workpiece to be positioned is a cylindrical structure, as shown in fig. 5.

Specifically, the workpiece positioning device further comprises a carrier table 5 and ejector pin springs, wherein a clamping concave table and ejector pin mounting holes are formed in the carrier table 5, the ejector pin springs are accommodated in the ejector pin mounting holes in a protruding mode, and the base 4 and the clamping positioning piece 3 are fixedly mounted in the clamping concave table of the carrier table 5.

Specifically, a counter bore structure is arranged on one side, far away from the clamping end, of the clamping push block 1, the structure of the clamping push block 1 is shown in fig. 7-8, one end of a return spring abuts against the bottom of the counter bore structure, and the other end of the return spring is fixed on the carrier table 5.

Specifically, the clamping end of the clamping push block 1 is provided with a clamping groove, the wall of the clamping groove is provided with a guide inclined plane, the size of the clamping groove on the clamping end of each clamping push block 1 can be different, and the size is determined according to the specific structure of the target workpiece to be positioned.

Specifically, the base 4 is provided with a guide slot, as shown in fig. 9-10, and the clamping and pushing block 1 is accommodated in the guide slot and is slidably connected with the guide slot.

Specifically, the clamping and positioning element 3 is provided with three first sinking platform structures matched with the clamping end of the clamping and pushing block 1 on the clamping and positioning element 3, and three second concave platforms are further provided on the clamping and positioning element 3, the direction of the second concave platform far away from the clamping end protrudes out of the first sinking platform, the second concave platforms are used for accommodating ejector pin springs protruding out of the ejector pin mounting holes, and the second concave platforms are matched with the target workpiece.

Specifically, three first sunken platform structures and three second concave platforms arranged on the clamping and positioning part 3 are correspondingly matched with the three clamping and pushing blocks 1 and the three elastic parts 2 respectively.

Specifically, a pushing part is further arranged on the workpiece positioning device and is fixedly connected with the three clamping pushing blocks 1 respectively.

In a state that the workpiece positioning device does not position and clamp the workpiece, as shown in fig. 2, the base 4 and the clamping positioning element 3 are both fixedly installed in the clamping concave table of the carrier table 5, the clamping end of the clamping push block 1 abuts against the workpiece positioning station 31 of the clamping positioning element 3 under the action of the elastic element 2, and the abutting end of the clamping push block 1 is separated from the abutting surface of the clamping concave table.

Under the action of an external force 2F, the direction of F2 pushes the push handle part as shown in fig. 4 and simultaneously drives the three clamping push blocks 1 to slide along the guide structure 41 on the base 4 in the direction away from the clamping positioning piece 3, the return spring is stressed and compressed until the abutting end of the clamping push block 1 abuts against the abutting surface of the clamping concave table, at the moment, the distance between the clamping push block 1 and the clamping positioning piece 3 is the largest, and the cylindrical product a can be placed on the ejector pin spring of the clamping positioning piece 3 through the manipulator and part of the side wall of the cylindrical product a abuts against the side wall surface of the second concave table.

After removing external force F2, press from both sides tight ejector pad 1 and receive under the elastic force F1's that reset spring produced effect, F1's direction is as shown in fig. 3, slide to the direction of pressing from both sides tight setting element 3 along the direction recess on the base 4, until pressing from both sides the direction inclined plane butt of the centre gripping recess that sets up on the tight ejector pad 1 on the lateral wall of cylindrical product a, accomplish the positioning and clamping work to cylindrical product a, and make work piece positioner at the in-process of conveying the target work piece, cylindrical product a can not drop from positioner because of influences such as vibrations, the positioning stability to cylindrical product a has been improved.

When external force F2 acts on the pushing hands again, the three clamping pushing blocks are driven to slide along the guide grooves on the base 4 in the direction away from the clamping positioning piece 3, the reset spring is stressed to be further compressed, until the butt end of the clamping pushing block 1 abuts against the butt surface of the clamping concave table, at the moment, the distance between the clamping pushing block 1 and the clamping positioning piece 3 is the largest, through the bottom of the pressing ejector spring, a cylindrical product a can protrude out of a workpiece positioning station 31 of the clamping positioning piece 3 along the elastic direction of the ejector spring under the action of the ejector spring, the cylindrical product a is conveniently taken out of the positioning device by a manipulator, and the next step of operation is carried out.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

All of the features described in the present application (including the features described in the different embodiments) may be combined arbitrarily and combined to form a new technical solution within the scope of the present application, where appropriate.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The workpiece positioning device is characterized by comprising a clamping push block (1), an elastic piece (2), a clamping positioning piece (3) and a base (4), wherein at least one workpiece positioning station (31) is arranged on the clamping positioning piece (3), and the clamping push block (1), the elastic piece (2) and the clamping positioning piece (3) are arranged on the base (4);

the clamping push block (1) is provided with a clamping end, and the clamping end faces the workpiece positioning station (31) and is matched with the workpiece positioning station (31);

the clamping push block (1) is connected with the base (4) in a sliding mode, the elastic piece (2) is connected with the clamping push block (1) in a matched mode along the elastic direction, and the elastic direction of the elastic piece (2) is the same as the sliding direction of the clamping push block (1).

2. The workpiece positioning device according to claim 1, characterized in that a clamping position (11) is arranged on the clamping end, and the clamping position (11) is arranged corresponding to the position of the workpiece positioning station (31).

3. Workpiece positioning device according to claim 2, characterised in that the clamping location (11) is a clamping groove, the groove wall of which is provided with a guiding bevel.

4. The workpiece positioning device according to claim 1, wherein a first sinking platform and a second sinking platform which are communicated are arranged on the workpiece positioning station (31), the first sinking platform is matched with the clamping end, and the second sinking platform is matched with a target workpiece;

the second sinking platform protrudes out of the first sinking platform along the direction far away from the clamping end.

5. The workpiece positioning device according to claim 4, characterized in that a positioning groove (311) is provided on the second sinking table, and the positioning groove (311) is matched with the target workpiece.

6. Workpiece positioning device according to claim 1, characterised in that the base (4) is provided with a guide structure (41), and that the guide structure (41) and the clamping pusher (1) are provided with a guide groove alternatively and a sliding connection matching the guide groove.

7. The workpiece positioning device according to claim 1, characterized in that an elastic member connection site (12) is provided on the clamping and pushing block (1), and the elastic member connection site (12) abuts against the elastic member (2).

8. The workpiece positioning device according to claim 1, further comprising a plurality of the clamping push blocks (1), a plurality of the elastic members (2), and a push hand portion fixedly connected with the plurality of the clamping push blocks (1), respectively.

9. The device for positioning workpieces according to claim 1, characterized in that it further comprises a carrier table (5), said carrier table (5) being provided with a clamping recess, said base (4) and said clamping fixture (3) cooperating with said clamping recess.

10. The workpiece positioning device according to claim 9, wherein the clamping push block (1) is further provided with an abutting end, the abutting end is separated from the clamping end, the clamping concave table is provided with an abutting surface, and when the clamping end abuts against the workpiece positioning station (31), the abutting end is separated from the abutting surface.