CN212635402U

CN212635402U - Clamping device

Info

Publication number: CN212635402U
Application number: CN201922273385.XU
Authority: CN
Inventors: 钱炯昭; 王富有; 祖永彬
Original assignee: Fu Tai Hua Precision Electronic Zhengzhou Co Ltd
Current assignee: Fulian Precision Electronics Zhengzhou Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2021-03-02
Anticipated expiration: 2029-12-17

Abstract

The utility model provides a clamping device for the centre gripping work piece. The clamping device comprises a base, and further comprises a first clamping plate, a second clamping plate and a pushing piece, wherein the first clamping plate, the second clamping plate and the pushing piece are arranged on the base respectively, the first clamping plate is fixedly arranged on the base, the second clamping plate is rotatably arranged on the base and is positioned between the first clamping plate and the pushing piece, the pushing piece comprises a supporting part and a pushing part, the supporting part is arranged on the base, one end of the pushing part is movably connected with the supporting part, the other end of the pushing part is connected with one side, deviating from the first clamping plate, of the second clamping plate, and the pushing part can push the second clamping plate to rotate towards the first clamping plate, so that the workpiece is clamped between the first clamping plate and the second clamping plate. The utility model is not only simple in structure, the centre gripping is stable moreover.

Description

Clamping device

Technical Field

The utility model belongs to the technical field of machining makes, especially, relate to a clamping device.

Background

In current industrial production, it is often necessary to clamp a workpiece using a clamping device to perform a machining process on the workpiece. The existing clamping devices generally adopt a cam or a buckle structure to clamp the clamping plates on two opposite sides of the workpiece, but when the clamping devices are used, a certain time is consumed for manually operating the cam or the buckle structure to clamp or take out the workpiece. In addition, the cam or the snap structure may accumulate impurities and be easily worn, and the clamping is unstable after the cam or the snap structure is used for a period of time, so that the workpiece is not well machined, and frequent maintenance is required. If the structure is damaged, the entire clamping structure must be replaced, resulting in lower production efficiency and increased cost.

SUMMERY OF THE UTILITY MODEL

In view of the above circumstances, it is desirable to provide a clamping device with a simple structure and stable clamping to solve the above problems.

A clamping device is used for clamping a workpiece and further comprises a first clamping plate, a second clamping plate and a pushing piece, wherein the first clamping plate, the second clamping plate and the pushing piece are respectively arranged on a base, the first clamping plate is fixedly arranged on the base, the second clamping plate is rotatably arranged on the base and is positioned between the first clamping plate and the pushing piece, the pushing piece comprises a supporting portion and a pushing portion, the supporting portion is arranged on the base, one end of the pushing portion is movably connected with the supporting portion, the other end of the pushing portion is connected with one side, deviating from the first clamping plate, of the second clamping plate, and the pushing portion can push the second clamping plate to rotate towards the first clamping plate so that the workpiece is clamped between the first clamping plate and the second clamping plate.

Further, the supporting portion is disposed on a side of the second clamping plate away from the first clamping plate, the supporting portion has a supporting surface forming an acute angle with the first clamping plate, the second clamping plate is supported by the supporting surface when the pushing member is in the releasing state, and the second clamping plate is supported by the pushing portion and abuts against the first clamping member when the pushing member is in the clamping state.

Further, the promotion portion includes rotation portion and push rod, the one end of rotation portion with the supporting part rotates to be connected, the other end of rotation portion is equipped with one and dodges the groove, the one end of push rod accept in dodge the inslot, the other end of push rod with the second grip block rotates to be connected, the rotation portion is close to the one end ability atress of push rod winds the supporting part is close to the one end of rotation portion rotates, makes the push rod supports to push away the second grip block is towards being close to or keeping away from the direction of first grip block rotates to make first grip block with the centre gripping of second grip block or release the work piece.

Further, the pushing portion further comprises a handle arranged on one side of the rotating portion, and one end of the handle penetrates through the avoiding groove and the push rod in the avoiding groove.

Furthermore, a plurality of screwing holes are formed in the base, the supporting portion is screwed on the screwing holes, the base can adjust the distance between the supporting portion and the first clamping plate by changing the screwing position on the base, and accordingly the pushing force of the push rod on the second clamping plate is adjusted.

Furthermore, one side of the second clamping plate, which is far away from the first clamping plate, is provided with a fixed block, a groove is formed in the fixed block, and one end, far away from the rotating part, of the push rod is rotatably connected in the groove.

Further, the pushing part is an air cylinder arranged on the supporting part, and a power output end of the air cylinder is connected with the second clamping plate.

Furthermore, a first connecting piece is fixedly connected to one side, away from the second clamping plate, of the first clamping plate, and the first connecting piece is fixed on the base; and a second connecting piece is embedded at one side of the second clamping plate, which is close to the first clamping plate, and the second connecting piece is rotatably connected to the base.

Furthermore, the clamping device also comprises a fixing piece arranged on the base, and the first connecting piece or the second connecting piece is respectively connected with the fixing piece.

Furthermore, one side of the second clamping plate, which is close to the first clamping plate, is provided with a plurality of positioning pins so as to position the workpiece.

The clamping device utilizes the pushing part to push the second clamping plate to rotate towards the first clamping plate so as to clamp the workpiece between the first clamping plate and the second clamping plate.

Drawings

Fig. 1 is a schematic perspective view of a clamping device according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the clamping device of fig. 1.

Description of the main elements

The following detailed description will further illustrate the present invention in conjunction with the above figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the present invention provides a clamping device 100 for clamping a workpiece 200. The clamping device 100 includes a base 10, a first clamping plate 20, a second clamping plate 30, and a pushing member 40.

Specifically, referring to fig. 2, the first clamping plate 20 is fixedly disposed on the base 10. The second clamping plate 30 is rotatably disposed on the base 10 and located between the first clamping plate 20 and the pushing member 40. The pushing member 40 includes a supporting portion 41 and a pushing portion 42, the supporting portion 41 is disposed on the base 10, one end of the pushing portion 42 is movably connected to the supporting portion 41, the other end of the pushing portion 42 is connected to a side of the second clamping plate 30 away from the first clamping plate 20, and the pushing portion 42 can push the second clamping plate 30 to rotate towards the first clamping plate 20, so that the workpiece 200 is clamped between the first clamping plate 20 and the second clamping plate 30.

The base 10 has an area and weight to receive and support other components, such as a disk shape. The base 10 is used for supporting the first clamping plate 20, the second clamping plate 30 and the pushing member 40.

The first clamping plate 20 and the second clamping plate 30 are substantially similar in shape to cooperatively clamp the workpiece, but some areas may be different depending on the actual operational needs, such as the side edges of the second clamping plate 30 having slots for easy access. The first clamping plate 20 is vertically disposed on the base 10. A first connecting member 21 is fixedly connected to a side of the first clamping plate 20 away from the second clamping plate 30. The first connecting member 21 is fixed to the base 10. Specifically, the number of the first connecting pieces 21 is two, and two first connecting pieces 21 are arranged at an interval at one end of the first clamping plate 20 close to the base 10.

A second connecting member 31 is embedded in one side of the second clamping plate 30 close to the first clamping plate 20, and the second connecting member 31 is rotatably connected to the base 10. In other embodiments, the second connecting member 31 can be disposed on the other side away from the first clamping plate 20, depending on the actual design requirement. Specifically, the clamping device 100 further includes a fixing member 50 between the base 10 and the second clamping plate 30. The fixing member 50 is rotatably connected to the second connecting member, and one end of the fixing member 50 is inserted into the first connecting member 21. Specifically, the number of the second connectors 31 is two, and two second connectors 31 are disposed at an interval at one end of the second clamping plate 30 close to the base 10.

In the present embodiment, a plurality of positioning pins 32 are disposed on a side of the second clamping plate 30 close to the first clamping plate 20, and the positioning pins 32 are disposed on the second clamping plate 30 at intervals and can be distributed according to the shape of the workpiece 200 to position the workpiece 200.

In the present embodiment, the corresponding positions of the first clamping plate 20 and the second clamping plate 30 are both provided with notches, so as to process the clamped workpiece 200.

It is understood that in other embodiments, the first connecting member 21, the second connecting member 31 and the fixing member 50 can be omitted or alternatively provided.

The support 41 is a right-angled triangular plate. The supporting portion 41 is disposed on a side of the second clamping plate 30 away from the first clamping plate 20, the supporting portion 41 has a supporting surface 411 forming an acute angle with the first clamping plate 20, and when the pushing member 40 is in the release state, the second clamping plate 30 is supported by the supporting surface 411; when the pushing member 40 is in the clamping state, the second clamping plate 30 is supported by the pushing part 42 and abuts against the first clamping plate 20.

The pushing portion 42 includes a rotating portion 421 and a push rod 422. The rotating portion 421 has a substantially rod shape. One end of the rotating portion 421 is rotatably connected to one end of the supporting portion 41, and the other end of the rotating portion 421 is provided with an escape groove 4211. One end of the push rod 422 is accommodated in the escape groove 4211, and the other end of the push rod 422 is rotatably connected to the second clamping plate 30. One end of the rotating portion 421 close to the push rod 422 can be forced to rotate around one end of the supporting portion 41 close to the rotating portion 421, so that the push rod 422 drives the second clamping plate 30 to rotate towards a direction close to or away from the first clamping plate 20, so that the first clamping plate 20 and the second clamping plate 30 clamp or release the workpiece 200. Specifically, when the workpiece 200 is in the clamped state, the second clamping plate 30 is supported by the support portion 41; when the workpiece 200 is in the released state, the second chucking plate 30 is supported by the supporting surface 411.

In this embodiment, the pushing portion 42 further includes a handle 423 disposed at one side of the rotating portion 421. One end of the knob 423 penetrates the escape groove 4211 and the push rod 422 in the escape groove 4211.

In this embodiment, the base 10 is provided with a plurality of screw holes 11. The support portion 41 is screwed to the screw hole 11. The base 10 can adjust the distance between the supporting portion 41 and the first clamping plate 20 by changing the screwing position on the base 10, and accordingly adjust the pushing force of the push rod 422 on the second clamping plate 30.

In this embodiment, a fixing block 33 is disposed on a side of the second clamping plate 30 away from the first clamping plate 20, and a groove 331 is formed in a middle portion of the fixing block 33. One end of the push rod 422 far away from the rotating part 421 is rotatably connected in the recess 331.

It is understood that in other embodiments, the pushing portion 42 is a cylinder disposed on the supporting portion 41. The power take-off of the cylinder is connected to the second clamping plate 30.

When in actual use, an acting force is applied to the handle 423 first, so that the rotating portion 421 rotates around one end of the supporting portion 41 close to the rotating portion 421, and the push rod 422 drives the second clamping plate 30 to rotate towards a direction away from the first clamping plate 20 until an included angle between the push rod 422 and the rotating portion 421 is an acute angle, at this time, the second clamping plate 30 is supported by the supporting surface 411; the workpiece 200 is then positioned on the positioning pins 32 of the second clamping plate 30; then, the handle 423 is continuously applied with a force in another direction, so that the push rod 422 drives the second clamping plate 30 to rotate in a direction approaching to the first clamping plate 20 until the push rod 422 is aligned with the rotating portion 421. At this time, the pushing force of the push rod 422 on the second clamping plate 30 causes the workpiece 200 to be clamped between the first clamping plate 20 and the second clamping plate 30; finally, the clamped workpiece 200 is processed at the notches of the positions corresponding to the first clamping plate 20 and the second clamping plate 30, such as hole chamfering polishing or hole inner wall polishing of the workpiece 200.

The clamping device 100 uses the pushing part 42 to push the second clamping plate 30 to rotate towards the first clamping plate 20, so that the workpiece 200 is clamped between the first clamping plate 20 and the second clamping plate 30, and compared with the prior art, the clamping device has the advantages of simple structure, low processing cost, convenience for routine maintenance of the biotechnology and stable clamping; the polishing solution is not easy to accumulate on the pushing piece 40, and the phenomenon of mechanism locking is avoided; the design idea of the position adjustment of the support portion 41 eliminates unstable clamping caused by abrasion of structural members in the use process of the jig.

In addition, other changes may be made by those skilled in the art without departing from the spirit of the invention, and it is intended that all such changes be considered within the scope of the invention.

Claims

1. A clamping device is used for clamping a workpiece and comprises a base and is characterized in that, the clamping device also comprises a first clamping plate, a second clamping plate and a pushing piece which are respectively arranged on the base, the first clamping plate is fixedly arranged on the base, the second clamping plate is rotatably arranged on the base, and is positioned between the first clamping plate and the pushing member, the pushing member comprises a supporting part and a pushing part, the supporting part is arranged on the base, one end of the pushing part is movably connected with the supporting part, the other end of the pushing part is connected with one side of the second clamping plate departing from the first clamping plate, the pushing portion can push the second clamping plate to rotate towards the first clamping plate, so that the workpiece is clamped between the first clamping plate and the second clamping plate.

2. The clamping device of claim 1 wherein said support is disposed on a side of said second clamping plate remote from said first clamping plate and has a seating surface at an acute angle to said first clamping plate, said second clamping plate being supported by said seating surface when said pusher is in the released state, said second clamping plate being supported by said pusher and abutting said first clamping plate when said pusher is in the clamped state.

3. The clamping device as claimed in claim 1, wherein the pushing portion includes a rotating portion and a pushing rod, one end of the rotating portion is rotatably connected to the supporting portion, an avoiding groove is formed in the other end of the rotating portion, one end of the pushing rod is received in the avoiding groove, the other end of the pushing rod is rotatably connected to the second clamping plate, one end of the rotating portion, which is close to the pushing rod, can be forced to rotate around one end of the supporting portion, which is close to the rotating portion, so that the pushing rod pushes the second clamping plate to rotate towards a direction close to or away from the first clamping plate, and the first clamping plate and the second clamping plate clamp or release the workpiece.

4. The clamping device as claimed in claim 3, wherein the pushing portion further comprises a handle disposed at one side of the rotating portion, and one end of the handle penetrates through the avoiding groove and the pushing rod in the avoiding groove.

5. The clamping device as claimed in claim 3, wherein a fixing block is disposed on a side of the second clamping plate facing away from the first clamping plate, a groove is formed in the fixing block, and an end of the push rod facing away from the rotating portion is rotatably connected in the groove.

6. The clamping device as claimed in claim 3, wherein the base is provided with a plurality of screw holes, the supporting portion is screwed on the screw holes, the base can adjust the distance between the supporting portion and the first clamping plate by changing the screwing position on the base, and accordingly the pushing force of the push rod on the second clamping plate is adjusted.

7. The clamping device of claim 1 wherein said pushing portion is an air cylinder disposed on said support portion, said air cylinder having a power take-off connected to said second clamping plate.

8. The clamping device of claim 1, wherein a first connector is fixedly connected to a side of the first clamping plate facing away from the second clamping plate, the first connector being fixed to the base; and a second connecting piece is embedded at one side of the second clamping plate, which is close to the first clamping plate, and the second connecting piece is rotatably connected to the base.

9. The clamping device of claim 8 further comprising a securing member positioned between said base and said second clamping plate, said securing member being pivotally connected to said second connector member and having one end inserted into said first connector member.

10. The clamping device of claim 1 wherein a side of said second clamping plate adjacent said first clamping plate is provided with a plurality of locating pins for locating said workpiece.