CN213561113U

CN213561113U - Floating clamping tool

Info

Publication number: CN213561113U
Application number: CN202022345988.9U
Authority: CN
Inventors: 袁荡
Original assignee: Shanghai Chufeng Electromechanical Co ltd
Current assignee: Shanghai Chufeng Electromechanical Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-29
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a floating clamping tool, which comprises at least one cylinder body, wherein a piston chamber is arranged on the cylinder body; the clamping mechanism comprises at least two clamping mechanisms, a clamping opening is formed between the tops of the clamping mechanisms, and an inclined waist hole is formed in at least one clamping mechanism; at least one fulcrum pin, wherein the fulcrum pin is fixed to the cylinder body through the waist hole; and a piston disposed in the piston chamber, the piston being driven to reciprocate in the piston chamber, wherein a bottom of the clamping mechanism provided with the waist hole is rotatably connected to the piston, and when the piston moves up and down along the piston chamber, at least one clamping mechanism is driven to move the fulcrum pin along a path of the waist hole. The utility model provides a two claw centre gripping frocks that float simple structure only needs one step of clamping action just can stabilize the work piece that there is the deviation in centre gripping appearance symmetry, has also solved simultaneously that the space is not enough, problem that manufacturing cost is high.

Description

Floating clamping tool

Technical Field

The utility model relates to a processing frock technical field, more specifically relates to a centre gripping frock floats.

Background

In actual processing, when the cutting rigidity of a product is insufficient, local clamping is needed to meet the cutting rigidity, and the selection of a clamping tool is particularly important; the existing common clamping tool is provided with a centering clamp, the moving strokes of two clamping jaws of the centering clamp are always kept consistent in the clamping process, the clamping mode can well clamp a workpiece with the shape symmetrical by the center, and when the symmetry degree of the workpiece with the shape symmetrical by the center as a reference has deviation, the workpiece cannot be clamped, so that after the centering clamp is positioned for the first time, only a product with the center as the reference can be processed, if the workpiece with the center as the reference and the pair deviation is clamped, the workpiece needs to be supported and then clamped, and thus, a plurality of problems are caused:

firstly, one step is added in the clamping action, so that the phenomenon of unstable clamping is easily caused by the increased control difficulty; secondly, such clamping manner is easy to cause clamping deformation due to support collapse; in addition, the clamping tool occupies a large space, and the application occasion is easily limited; finally, the clamping tool has the advantages of large number of hydraulic components, high control requirement and high processing cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centre gripping frock floats, wherein, the centre gripping of the poor product of appearance symmetry can only need just can be accomplished through one step to the centre gripping frock of floating, and the clamping-force is stable, not only can establish local tight rigidity of clamp, has reduced the control requirement moreover, has reduced the processing cost.

Another object of the utility model is to provide a centre gripping frock floats, wherein, centre gripping frock simple structure and compactness float, occupation space is little, has extensive application scene.

In order to achieve at least one purpose, the utility model provides a floating clamping tool, which comprises at least one cylinder body, wherein a piston chamber is arranged on the cylinder body; the clamping mechanism comprises at least two clamping mechanisms, a clamping opening is formed between the tops of the clamping mechanisms, and an inclined waist hole is formed in at least one clamping mechanism; at least one fulcrum pin, wherein the fulcrum pin is fixed to the cylinder body through the waist hole; and the piston is arranged in the piston chamber and can be driven to reciprocate in the piston chamber, wherein the bottom of the clamping mechanism provided with the waist hole is rotatably connected with the piston, when the piston moves up and down along the piston chamber, at least one clamping mechanism is driven to enable the fulcrum pin to move along the path of the waist hole, and the clamping mechanism rotates through the fulcrum pin to adjust the size of the clamping opening.

In one embodiment, the floating clamping tool further comprises a connecting plate, and the clamping mechanism is rotatably connected with the piston through the connecting plate, so that when the piston is driven, the connecting plate is driven to move, and the clamping mechanism is linked.

In one embodiment, the fulcrum pin includes a first fulcrum pin and a second fulcrum pin, wherein the first fulcrum pin passes through the waist hole and is fixed on the cylinder body, and the second fulcrum pin passes through the end of the clamping mechanism and rotatably connects the clamping mechanism to the connecting plate.

In one embodiment, two sides of the cylinder body are provided with mounting grooves, and the two clamping mechanisms are symmetrically arranged in the mounting grooves relative to the piston chamber.

In one embodiment, the clamping mechanism comprises a clamping arm and a clamping head detachably arranged at the top of the clamping arm, the waist hole is obliquely formed on the clamping arm, and the clamping opening is formed between the two clamping heads.

In one embodiment, the end of the clamping arm is further provided with a connecting hole, and the clamping mechanism is rotatably connected to the connecting plate through the second fulcrum pin.

In one embodiment, a plurality of pressing teeth are arranged on the clamping end surface of the clamping head.

In one embodiment, a floating gap is arranged between the cylinder body and the connecting plate, and the size of the clamping opening is controlled by controlling the size of the floating gap.

In one embodiment, the cylinder body is further provided with a guide groove, the guide groove extends along the clamping direction of the clamping mechanism, two guide pieces are symmetrically arranged in the guide groove, and the clamping mechanism is clamped in the guide pieces.

In one embodiment, a through cover and a sealing ring are further arranged in the cylinder body, the through cover is sleeved outside the piston, and the sealing ring is arranged between the through cover and the piston.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

These and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings of which:

fig. 1 illustrates a perspective view of a floating clamping tool according to an embodiment of the present invention.

Fig. 2 illustrates a schematic cross-sectional view of a floating clamping tool according to an embodiment of the present invention.

In the figure:

1-floating clamping a tool; 10-cylinder 11-piston chamber; 12-mounting grooves; 13-a guide groove; 14-a guide vane; 20-a piston; 30-a clamping mechanism; 31-a gripper arm; 32-a gripping head; 300-a clamping port; 310-waist hole; 311-connecting hole; 321-pressing teeth; 40-a connecting plate; 50-fulcrum pin; 51-a first fulcrum pin; 52-a second fulcrum pin; 60-transparent cover; 70-sealing ring; 100-floating gap.

Detailed Description

The terms and words used in the following specification and claims are not limited to the literal meanings, but are used only by the applicants to enable a clear and consistent understanding of the invention. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

While ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the teachings of the present inventive concept. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

As shown in fig. 1 and 2, the structure of the floating clamping tool according to the embodiment of the present invention is illustrated. The floating clamping tool 1 comprises a cylinder body 10, wherein a piston chamber 11 and mounting grooves 12 which are arranged on two sides of the cylinder body 10 and are symmetrical relative to the piston chamber 11 are formed in the cylinder body 10; a piston 20 disposed in the piston chamber 11, the piston 20 being driven by a hydraulic pump (not shown) to reciprocate in the piston chamber 11; the clamping mechanisms 30 are symmetrically arranged in the mounting groove 12, each clamping mechanism 30 comprises a clamping arm 31 and clamping heads 32 detachably clamped on the clamping arm 31, the clamping arm 31 of each clamping mechanism 30 is provided with an inclined waist hole 310, and a clamping opening 300 is formed between each two clamping heads 32; and a connecting plate 40 rotatably connecting the clamping mechanism 30 and the piston 20.

Further, the floating clamping tool 1 further comprises a fulcrum pin 50, wherein the fulcrum pin 50 comprises a first fulcrum pin 51 and a second fulcrum pin 52, the first fulcrum pin 51 penetrates through the waist hole 310 to movably connect the clamping mechanism 30 to the cylinder 10, a connecting hole 311 is formed in the tail end of the clamping arm 31, and the second fulcrum pin 52 rotatably connects the clamping mechanism 30 to the connecting plate 40 through the connecting hole 311.

By this arrangement, the cylinder 10, the clamping mechanism 30 and the connecting plate 40 form a three-bar linkage like a hinge, when the piston 20 is driven, the piston 20 pushes the connecting plate 40 to drive the clamping mechanism 30 to move linearly, and the first fulcrum pin 51 moves along the path of the kidney-shaped hole 310, and the clamping mechanism 30 rotates around the second fulcrum pin 52 as a fulcrum because the kidney-shaped hole 310 is inclined, so as to adjust the size of the clamping opening 300. It should be understood that the floating clamping tool 1 shown in the present embodiment is a two-jaw tool, and may also be a multi-jaw tool with more than two jaws, and in addition, only one of the clamping mechanisms 30 may be driven, or a plurality of the clamping mechanisms may be driven simultaneously, and the present invention is not limited in particular.

Specifically, a plurality of pressing teeth 321 are arranged on the clamping end face of the clamping head 32, and when a workpiece is clamped, the pressing teeth 321 are pressed on the surface of the workpiece, so that the clamping effect is enhanced, and the clamping stability is improved.

More specifically, be equipped with floating space 100 between cylinder body 10 and the connecting plate 40, can be through control floating space 100 is in order to control fixture 30's centre gripping stroke to control the size of centre gripping space, can freely adapt to the contact and press from both sides tight product according to the appearance change of centre gripping work piece, in order to establish local tight rigidity of pressing from both sides, cause the work piece to warp when preventing to press from both sides, only need one step just can accomplish the clamping action, reduced the control degree of difficulty, improved the stability of centre gripping.

Further, a guide groove 13 is formed in the cylinder body, the guide groove 13 extends along the clamping direction of the clamping mechanism 30, two guide pieces 14 are symmetrically arranged in the guide groove 13, the clamping mechanism 30 is clamped in the guide pieces 14, when the clamping mechanism 30 is driven to rotate, the clamping mechanism 30 pushes the guide pieces 14 to move in the guide groove 13, and the clamping accuracy of the clamping mechanism is improved through the arrangement.

Preferably, a transparent cover 60 and a sealing ring 70 are further arranged in the cylinder body 10, the transparent cover 60 is sleeved outside the piston 20, and the sealing ring 70 is arranged between the transparent cover 60 and the piston 20.

The basic principles of the present invention have been described above with reference to specific embodiments, but it should be noted that advantages, effects, etc. mentioned in the present invention are only examples and not limitations, and these advantages, effects, etc. should not be considered as necessarily possessed by various embodiments of the present invention. Furthermore, the specific details disclosed above are for the purpose of illustration and understanding only and are not intended to be limiting, since the invention is not to be limited to the specific details described above.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the invention to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

Claims

1. The utility model provides a centre gripping frock floats which characterized in that includes:

the cylinder body is provided with a piston chamber;

the clamping mechanism comprises at least two clamping mechanisms, a clamping opening is formed between the tops of the clamping mechanisms, and an inclined waist hole is formed in at least one clamping mechanism;

at least one fulcrum pin, wherein the fulcrum pin is fixed to the cylinder body through the waist hole; and

the piston is arranged in the piston chamber and can be driven to reciprocate in the piston chamber, the bottom of the clamping mechanism provided with the waist hole is rotatably connected with the piston, when the piston moves up and down along the piston chamber, at least one clamping mechanism is driven to enable the fulcrum pin to move along the path of the waist hole, and the clamping mechanism rotates through the fulcrum pin to adjust the size of the clamping opening.

2. The floating clamping tool of claim 1 further comprising a connecting plate through which the clamping mechanism is rotatably connected to the piston such that when the piston is driven, the connecting plate is driven to move to interlock the clamping mechanism.

3. The floating clamping tool of claim 2, wherein the fulcrum pin comprises a first fulcrum pin and a second fulcrum pin, wherein the first fulcrum pin passes through the waist hole and is fixed on the cylinder body, and the second fulcrum pin passes through the tail end of the clamping mechanism and rotatably connects the clamping mechanism to the connecting plate.

4. The floating clamping tool according to claim 3, wherein mounting grooves are formed in two sides of the cylinder body, and the two clamping mechanisms are symmetrically arranged in the mounting grooves relative to the piston chamber.

5. The floating clamping tool according to claim 4, wherein the clamping mechanism comprises a clamping arm and a clamping head detachably arranged at the top of the clamping arm, the waist hole is obliquely formed in the clamping arm, and the clamping opening is formed between the two clamping heads.

6. The floating clamping tool according to claim 5, wherein a connecting hole is further formed in the tail end of the clamping arm, and the clamping mechanism is rotatably connected to the connecting plate through the second fulcrum pin.

7. The floating clamping tool according to claim 5, wherein a plurality of pressing teeth are arranged on the clamping end face of the clamping head.

8. The floating clamping tool according to claim 2, wherein a floating gap is arranged between the cylinder body and the connecting plate, and the size of the clamping opening is controlled by controlling the size of the floating gap.

9. The floating clamping tool according to claim 1, wherein a guide groove is further formed in the cylinder body, the guide groove extends along the clamping direction of the clamping mechanism, two guide pieces are symmetrically arranged in the guide groove, and the clamping mechanism is clamped in the guide pieces.

10. The floating clamping tool according to claim 1, wherein a transparent cover and a sealing ring are further arranged in the cylinder body, the transparent cover is sleeved outside the piston, and the sealing ring is arranged between the transparent cover and the piston.