CN217046633U

CN217046633U - Clamping jig

Info

Publication number: CN217046633U
Application number: CN202123298698.4U
Authority: CN
Inventors: 彭国良; 薛海河; 习正跃; 徐剑君; 郝峰
Original assignee: Hongzhun Precision Tooling Kunshan Co Ltd
Current assignee: Hongzhun Precision Tooling Kunshan Co Ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-26
Anticipated expiration: 2031-12-24

Abstract

The application provides a clamping tool for hold the work piece tightly, the reference column has on the work piece, and the clamping tool includes the die block, holds subassembly and first driving piece tightly, and the die block is used for placing the work piece, the through-hole has been seted up to the die block. The clasping assembly comprises a positioning sleeve, a first clasping rod and a first driving piece. The positioning sleeve is fixed in the through hole; the first enclasping rod is rotatably connected in the positioning sleeve and comprises a first end and a second end opposite to the first end, an enclasping groove used for installing the positioning column is formed between the first end and the inner wall of the positioning sleeve, and the size of the enclasping groove can be adjusted when the first enclasping rod rotates, so that the positioning column is enclasping or loosened; the first driving piece is connected with the second end and used for driving the first enclasping rod to rotate.

Description

Clamping jig

Technical Field

The application relates to the technical field of CNC processing, especially, relate to a clamping tool.

Background

After the plastic part is demolded, the plastic part generally needs to be reprocessed, and due to the different structures of the plastic part, for example, curved surfaces and draft angles are additionally arranged on the plastic part, and the appearance of the plastic part needs to meet the requirement of reducing the contact with equipment, so that the positioning of the plastic part and the CNC processing are difficult. In order to achieve positioning, a redundant part (i.e., a stub bar) is usually added to the plastic part during injection molding, and a mechanism for fixing the stub bar is used to position the plastic part. However, in the actual positioning process, the situation that the stub bar is not clamped in place often occurs, and the processing precision of the plastic part is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a clamping fixture to solve the above problems.

The application provides a clamping tool for hug the work piece tightly, the reference column has on the work piece, the clamping tool includes the die block, hugs subassembly and first driving piece tightly, and the die block is used for placing the work piece, the through-hole has been seted up to the die block. Embrace subassembly of hugging closely includes position sleeve, first pole and the first driving piece of hugging closely. The positioning sleeve is fixed in the through hole; the first enclasping rod is rotatably connected in the positioning sleeve and comprises a first end and a second end opposite to the first end, an enclasping groove used for installing the positioning column is formed between the first end and the inner wall of the positioning sleeve, and the size of the enclasping groove can be adjusted when the first enclasping rod rotates, so that the positioning column is enclasping or loosened; the first driving piece is connected with the second end and used for driving the first enclasping rod to rotate.

In some embodiments, a surface of the first end for contacting the positioning post is a curved surface, and the curved surface is adapted to fit with an outer wall of the positioning post.

In some embodiments, the clasping assembly further comprises a rotating shaft, the rotating shaft is fixed in the positioning sleeve, and the first clasping rod is rotatably connected in the positioning sleeve through the rotating shaft.

In some embodiments, the clamping jig further comprises a sliding block and a connecting block, the first driving piece is connected with the sliding block through the connecting block and drives the sliding block to move, a groove is formed in the end portion of the sliding block, and the second end penetrates through the groove so as to drive the first holding rod to rotate through the sliding block.

In some embodiments, the bottom mold is provided with a plurality of through holes, each through hole is provided with the clasping assembly, the sliding block is provided with two grooves, and each first clasping rod of the two clasping assemblies passes through the corresponding groove.

In some embodiments, each of the clasping assemblies comprises a second clasping rod which is positioned in the same positioning sleeve as the first clasping rod, the second clasping rod is connected with a second driving member, and the first driving member and the second driving member are used for moving along opposite directions so as to enable the two first clasping rods to approach or separate from each other.

In some embodiments, the clamping jig further comprises a supporting plate, the bottom die is arranged on the supporting plate, the sliding block is connected to the supporting plate in a sliding mode, and the first driving piece and the second driving piece are fixed to one side, away from the bottom die, of the supporting plate.

In some embodiments, the supporting plate is provided with a through hole, a connecting column is further arranged between the connecting block and the sliding block, and the connecting column penetrates through the through hole and is fixed on the connecting block.

In some embodiments, the attachment post is disposed in a middle portion of the slider.

In some embodiments, the position sleeve includes the installation department and set up in location portion on the installation department, the installation department along the outer wall of location portion extends towards relative both sides and forms the installation department, the position sleeve passes through the installation department is fixed in on the die block.

In this application, through the position sleeve in the clamping tool and the first combination of embracing tightly the pole, can control the first pole pivoted angle of embracing tightly through first driving piece to embrace tightly in embracing tightly the inslot with the reference column on the work piece in a flexible way, improve the clamping in-process, because the clamping does not in place and influence the problem of machining precision.

Drawings

Fig. 1 is a schematic structural view of a clamping jig provided with a workpiece according to an embodiment of the present application.

Fig. 2 is an exploded view of the clamping fixture with the support frame removed in the embodiment shown in fig. 1.

Fig. 3 is a schematic structural diagram of the connection between the clasping assembly, the first driving member and the second driving member in the embodiment shown in fig. 2.

Fig. 4 is an exploded view of the clamping fixture with the support frame removed from the embodiment shown in fig. 2 from another view angle.

Fig. 5 is a schematic cross-sectional view of the clamping jig along V-V of the positioning column clasped by the clasping assembly in the embodiment shown in fig. 1.

Fig. 6 is a schematic cross-sectional view along V-V of the clamping jig of the clasping assembly not clasping the positioning column in the embodiment shown in fig. 1.

Fig. 7 is a schematic structural view of the clamping fixture shown in fig. 1, wherein the clamping fixture is provided with a pressing plate.

Description of the main elements

Clamping jig 100

Support frame 10

Supporting plate 20

Perforation 21

Limiting groove 22

Bottom die 30

Through hole 31

Mounting groove 32

Clasping assembly 40

First clasping rod 41

First end 411

Second end 412

Cambered surface 413

Second clasping rod 42

Position sleeve 43

Mounting part 431

Mounting hole 4311

Positioning part 432

Clasping groove 44

Rotating shaft 45

Slider 51

Groove 511

Connecting post 52

Connecting block 53

First driving member 61

Second drive member 62

Pressure plate 70

Abdicating groove 71

Third driving member 80

A first direction X

Second direction Y

Third direction Z

Workpiece 200

Positioning post 210

The following detailed description will further describe the present application in conjunction with the above-described figures 1-7.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below 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.

It will be understood that when an element is referred to as being "secured 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. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

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 application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

To further explain the technical means and effects of the present application for achieving the intended purpose, the present application will be described in detail with reference to the accompanying drawings and embodiments.

Referring to fig. 1 and fig. 2, a clamping fixture 100 for positioning and holding a workpiece 200 is provided in an embodiment of the present disclosure, and the workpiece 200 has a positioning column 210. The clamping fixture 100 includes a support frame 10, a support plate 20, a bottom mold 30, a clasping assembly 40, a first driving member 61, and a second driving member 62. The support plate 20 is disposed on the support frame 10. The bottom die 30 is fixed on the support plate 20, the bottom die 30 is provided with a through hole 31, and the clasping assembly 40 is arranged in the through hole 31.

Referring to fig. 3, 4 and 5, the clasping assembly 40 comprises a first clasping rod 41, a second clasping rod 42 and a positioning sleeve 43, and a first driving member 61 and a second driving member 62 are both mounted on the supporting plate 20. The first driving element 61 is connected to the first clasping rod 41, the second driving element 62 is connected to the second clasping rod 42, and drives the first clasping rod 41 and the second clasping rod 42 to rotate in the same positioning sleeve 43, so that the positioning column 210 on the workpiece 200 is fixed on the clamping fixture 100 through the inner wall of the positioning sleeve 43 and the first clasping rod 41 or the second clasping rod 42.

Referring to fig. 1 and fig. 2, the clamping fixture 100 provided by the present application can be used in a workpiece 200 having a positioning column 210. In fig. 2, the workpiece 200 is illustrated as a door lock component, but it is understood that the specific structure of the workpiece 200 is not limited thereto. Two positioning pillars 210 are disposed on one surface of the workpiece 200, and the positioning pillars 210 can be understood as material heads on plastic parts, i.e. redundant parts disposed during the processing of the workpiece 200, and finally the positioning pillars 210 are removed from the workpiece 200.

Referring to fig. 3, 4 and 5, the positioning sleeve 43 includes a mounting portion 431 and a positioning portion 432 provided on the mounting portion 431, and the cross section of the positioning portion 432 is substantially elliptical. The mounting portions 431 extend along the outer wall of one end of the positioning portion 432 to opposite sides to form the mounting portions 431, and the mounting portions 431 have a substantially plate-shaped structure. The mounting portion 431 has two mounting holes 4311, and the positioning sleeve 43 is fixed to the bottom die 30 by fasteners (screws) passing through the mounting holes 4311. The bottom die 30 is provided with a mounting groove 32 at a position corresponding to the mounting portion 431, the mounting groove 32 communicates with the through hole 31, and the mounting portion 431 is fixed in the mounting groove 32. The extending direction of the mounting portion 431 is defined as a first direction X.

Referring to fig. 3, 4 and 5, the clasping assembly 40 further includes two rotating shafts 45, the two rotating shafts 45 are installed in parallel on two opposite sidewalls of the positioning portion 432, and an extending direction of each rotating shaft 45 is perpendicular to the first direction X. In some embodiments, along the first direction X, the two rotation shafts 45 are symmetrically disposed about a central axis of the positioning portion 432. The first clasping rod 41 and the second clasping rod 42 are respectively rotatably connected in the positioning portion 432 through a rotating shaft 45. The first clasping rod 41 and the second clasping rod 42 respectively approach or move away from each other under the action of the first driving piece 61 and the second driving piece 62 so as to control clasping the positioning column 210.

Referring to fig. 3, 4 and 5, the first clasping rod 41 has a first end 411 and a second end 412 opposite to the first end 411, wherein the first end 411 and an inner wall of the positioning portion 432 are enclosed to form the clasping groove 44. The second end 412 is connected to the first driving member 61, and the first driving member 61 makes the moving directions of the first end 411 and the second end 412 opposite to each other by taking the position of the corresponding rotating shaft 45 as a limit. When the positioning column 210 extends into the clasping groove 44, the first driving member 61 is started to drive the first clasping rod 41 to rotate, and the second end 412 is pushed to move close to the second clasping rod 42, so that the space of the clasping groove 44 is gradually reduced along the moving direction opposite to the second end 412 by the first end 411, the positioning column 210 is clasped in the positioning sleeve 43, the existing phenomenon that the positioning column 210 is not clamped in place is improved, and the machining precision of the workpiece 200 is improved.

Referring to fig. 6, when the positioning post 210 needs to be installed in the clasping groove 44, the first driving member 61 is started to push the second end 412 to move away from the second clasping rod 42, and the first end 411 is close to the second clasping rod 42 along a moving direction opposite to the second end 412, so that the space of the clasping groove 44 is increased, and then extends into the positioning post 210, and then the positioning post 210 is fixed by the first clasping rod 41.

Referring to fig. 2 and 3, in some embodiments, a surface of the first end 411 of the first clasping rod 41 contacting the positioning column 210 is configured as an arc 413, and the arc 413 is configured to fit with an outer wall of the positioning column 210. So set up, the area of contact of first hugging closely pole 41 and reference column 210 is increased for first hugging closely pole 41 hugs closely more to reference column 210. After the workpiece 200 is machined, the positioning column 210 is separated from the workpiece 200 through milling, and the positioning column 210 is fixed in the clamping jig 100 through the clasping assembly 40, so that abrasion of flying materials of the positioning column 210 on the workpiece 200 and a cutter in the milling process of the positioning column 210 is avoided, and the problem of flying materials of the positioning column 210 (stub bar) is solved.

Referring to fig. 3, 4 and 5, the clamping fixture 100 further includes a slider 51, a connecting post 52 and a connecting block 53. The connecting block 53 is fixed to the driving portion of the first driving member 61. The supporting plate 20 is provided with a plurality of through holes 21 and a plurality of limiting grooves 22, and the limiting grooves 22 are located on one side of the supporting plate 20 facing the bottom die 30. Each through hole 21 is communicated with the corresponding limiting groove 22, and the sliding block 51 is arranged in the limiting groove 22 in a sliding mode. The second direction Y is defined as the extending direction of the slider 51.

Referring to fig. 3, 4 and 5, the through hole 21 penetrates the bottom wall of the stopper groove 22. The connecting block 53 and the first drive element 61 are both located on the surface of the support plate 20 facing away from the bottom die 30. The connecting column 52 penetrates through the through hole 21 and is fixedly connected with the sliding block 51 arranged in the limiting groove 22, and the extending direction of the connecting column 52 is the third direction Z. And defining a third direction Z perpendicular to the first direction X and the second direction Y at the same time. When the first driving member 61 is started, the first driving member 61 drives the connecting block 53 to move, and drives the sliding block 51 and the sliding groove to slide along the third direction Z through the connecting column 52. With this arrangement, the space occupied by the clasping assembly 40 and the first driving member 61 can be reduced. In some embodiments, two parallel sliding blocks 51 are disposed in the same limiting groove 22, and the second driving member 62 drives the sliding blocks 51 to move, so as to drive the second clasping rod 42 to rotate. In some embodiments, the second clasping lever 42 is connected to the second driving member 62 in the same manner as the first clasping lever 41 is connected to the first driving member 61. The first clasping rod 41 and the second clasping rod 42 can fix two positioning pillars 210 on the same workpiece 200 at the same time.

Referring to fig. 3, 4 and 5, two ends of the sliding block 51 are provided with grooves 511, and the second end 412 of the first clasping rod 41 is inserted into the corresponding groove 511. When the driving slider 51 moves, the first clasping rod 41 is driven to move by the side wall of the groove 511. For the fixed mode of slider 51 and first hugging closely pole 41, so set up, be convenient for to the equipment and the dismantlement of clamping tool 100. Along second direction Y, two sets of subassemblies 40 of holding tightly are about the central axis symmetry of slider 51, and two sets of subassemblies 40 of holding tightly set up in the both ends of slider 51, promptly, can drive two sets of subassemblies 40 of holding tightly simultaneously through same slider 51, and two work pieces 200 of simultaneous control promptly improve the efficiency of clamping location. In some embodiments, the connecting column 52 is disposed at the middle of the slider 51 to force the two groups of clasping assemblies 40 evenly at the two ends of the slider 51.

In some embodiments, the first drive 61 and the second drive 62 each include, but are not limited to, any of a pneumatic cylinder, a hydraulic cylinder, or an electric push rod.

Referring to fig. 6 and 7, in some embodiments, the clamping fixture 100 further includes a pressing plate 70 and a third driving member 80, the third driving member 80 is disposed on the supporting plate 20, the pressing plate 70 is located above the bottom mold 30, and the third driving member 80 drives the pressing plate 70 to move toward or away from the bottom mold 30. The pressing plate 70 is provided with a plurality of receding grooves 71. When the workpiece 200 is processed, the workpiece 200 is fixed to the bottom die 30 by the clasping assembly 40, the first driving member 61 and the second driving member 62, and then the third driving member 80 is activated. The third driving member 80 drives the pressing plate 70 to abut against the bottom die 30, and the workpiece 200 abuts against between the pressing plate 70 and the bottom die 30, wherein the abdicating groove 71 is correspondingly located at the position of the workpiece 200, and the CNC equipment processes the workpiece 200 through the abdicating groove 71.

In this application, through the combination of the position sleeve 43 in the clamping jig 100 and the first pole 41 of hugging closely, can control the first pole 41 pivoted angle of hugging closely through first driving piece 61 to hug closely the reference column 210 on the work piece 200 in hugging closely the groove 44 in a flexible way, improve the clamping in-process, because the clamping is not in place and cause the problem that the machining precision is low.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. The utility model provides a clamping tool for hug closely the work piece, reference column has on the work piece, its characterized in that, the clamping tool includes:

the bottom die is used for placing the workpiece, and is provided with a through hole;

a hugging assembly comprising:

the positioning sleeve is fixed in the through hole;

the first enclasping rod is rotatably connected in the positioning sleeve and comprises a first end and a second end opposite to the first end, an enclasping groove for mounting the positioning column is formed between the first end and the inner wall of the positioning sleeve, and the size of the enclasping groove can be adjusted when the first enclasping rod rotates, so that the positioning column is enclasped or loosened;

the first driving piece is connected with the second end and used for driving the first enclasping rod to rotate.

2. The clamping jig of claim 1, wherein the surface of the first end, which is used for contacting the positioning column, is an arc surface, and the arc surface is used for being matched with the outer wall of the positioning column.

3. The clamping jig of claim 1, wherein the clasping assembly further comprises a rotating shaft, the rotating shaft is fixed in the positioning sleeve, and the first clasping rod is rotatably connected in the positioning sleeve through the rotating shaft.

4. The clamping jig as claimed in claim 1, wherein the clamping jig further includes a slider and a connecting block, the first driving member is connected to the slider through the connecting block and drives the slider to move, a groove is formed in an end portion of the slider, and the second end penetrates through the groove so that the first clasping rod is driven to rotate by the slider.

5. The clamping jig according to claim 4, wherein a plurality of through holes are formed in the bottom mold, the clasping assembly is arranged in each through hole, the slider is provided with two grooves, and each first clasping rod of the two clasping assemblies penetrates through the corresponding groove.

6. The clamping jig of claim 5, wherein each of the clasping assemblies comprises a second clasping rod located in the same positioning sleeve as the first clasping rod, the second clasping rod is connected with a second driving member, and the first driving member and the second driving member are configured to move in opposite directions so as to enable the two first clasping rods to approach or separate from each other.

7. The clamping jig of claim 6, further comprising a support plate, wherein the bottom die is disposed on the support plate, the slider is slidably connected to the support plate, and the first driving member and the second driving member are fixed to a side of the support plate away from the bottom die.

8. The clamping jig according to claim 7, wherein the supporting plate is provided with a through hole, a connecting column is further arranged between the connecting block and the sliding block, and the connecting column penetrates through the through hole and is fixed on the connecting block.

9. The clamping jig of claim 8, wherein the connecting column is disposed in the middle of the slider.

10. The clamping jig as claimed in claim 1, wherein the locating sleeve includes an installation portion and a locating portion disposed on the installation portion, the installation portion is formed by extending the outer wall of the locating portion towards opposite sides, and the locating sleeve is fixed on the bottom die through the installation portion.