CN214162689U - Clamping fixture - Google Patents

Abstract

A clamping jig is used for clamping a workpiece and comprises a base, a first fixing piece, a first elastic piece, a moving piece and a driving piece; the first fixing piece is fixedly arranged on the base; the first elastic piece is fixedly arranged on the base, and an accommodating space is formed between the first elastic piece and the first fixing piece and used for accommodating a workpiece; the movable piece is movably arranged on one side, away from the first fixed piece, of the first elastic piece, a first inclined plane is arranged on one side, away from the first fixed piece, of the first elastic piece, and the movable piece comprises a second inclined plane matched with the first inclined plane; the driving piece is connected with the moving piece and used for driving the moving piece to move up and down to enable the second inclined plane to extrude the first inclined plane, so that the first elastic piece generates deformation and is matched with the first fixing piece to fix the workpiece.

Description

Clamping fixture

Technical Field

The application relates to the field of jigs, especially relates to a clamping jig.

Background

With the increasing demand of 3C products, users have higher requirements on the appearance quality of the products, and products with various and complex structures need to be designed to meet the demands of the users. In the process of manufacturing various products with complex structures, a clamping fixture matched with the products is required to clamp a workpiece to be processed so as to obtain the products. The existing clamping jig has a complex structure and wastes raw materials of workpieces.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a clamping fixture with a simple structure and capable of saving raw material of a workpiece, so as to solve the above problems.

A clamping jig is used for clamping a workpiece and comprises a base, a first fixing piece, a first elastic piece, a moving piece and a driving piece; the first fixing piece is fixedly arranged on the base; the first elastic piece is fixedly arranged on the base, and an accommodating space is formed between the first elastic piece and the first fixing piece and used for accommodating a workpiece; the movable piece is movably arranged on one side, away from the first fixed piece, of the first elastic piece, a first inclined plane is arranged on one side, away from the first fixed piece, of the first elastic piece, and the movable piece comprises a second inclined plane matched with the first inclined plane; the driving piece is connected with the moving piece and used for driving the moving piece to move up and down to enable the second inclined plane to extrude the first inclined plane, so that the first elastic piece deforms and is matched with the first fixing piece to fix the workpiece.

Further, first elastic component is T type structure, including horizontal clamping part and vertical fixed part, horizontal clamping part is located one side that vertical fixed part deviates from the base, and horizontal clamping part includes surface and the first inclined plane of laminating with the work piece.

Further, the first elastic member includes spring steel or elastic polymer material.

Furthermore, the second inclined plane is parallel to the first inclined plane, and a first included angle is formed between the direction parallel to the first inclined plane or the second inclined plane and the movement direction of the movable piece.

Furthermore, the clamping jig further comprises a second fixing piece and a second elastic piece, the second fixing piece and the second elastic piece are symmetrically arranged with the first fixing piece and the first elastic piece respectively, and another accommodating space is formed between the second fixing piece and the second elastic piece.

Furthermore, the moving part further comprises a third inclined surface, the third inclined surface deviates from the second inclined surface and is intersected with the second inclined surface, and a fourth inclined surface matched with the third inclined surface is arranged on one side, deviating from the second fixing part, of the second elastic part.

Further, the cross-section of centre gripping tool along the direction on perpendicular to second inclined plane and third inclined plane, the cross-section of moving part have longest line segment D, have shortest distance L between first elastic component and the second elastic component, satisfy the formula: d is greater than L.

Furthermore, a second included angle between the direction parallel to the third inclined plane and the moving direction of the movable piece is equal to the first included angle.

Furthermore, the first included angle is theta, and the range of theta is more than or equal to 5 degrees and less than or equal to 45 degrees.

Further, the clamping jig further comprises a connecting rod, the moving part is fixed on the connecting rod, and the driving part is connected with the moving part through the connecting rod.

The application provides a centre gripping tool, through mutually supporting base, first mounting, first elastic component, moving part and driving piece, can be with the work piece fixed in order to process simple structure. When the workpiece is fixed, one part of the workpiece is fixed in the clamping jig, and the rest part of the workpiece can be processed, namely one workpiece can be fixed by matching of a group of components, so that raw materials of the workpiece are saved.

Drawings

Fig. 1 is a schematic view of an overall structure of a clamping fixture according to an embodiment of the present application.

Fig. 2 is an enlarged schematic structural view of a clamping fixture according to an embodiment of the present application.

Fig. 3 is a schematic structural view of a first elastic element, a movable element, and a second elastic element according to an embodiment of the present disclosure.

Fig. 4 is a schematic overall structure diagram of the clamping fixture according to the embodiment of the present application when the workpiece is not fixed.

Fig. 5 is a schematic structural view of a first elastic element, a movable element, and a second elastic element according to another embodiment of the present application.

Description of the main elements

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

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, a detailed description of the present application will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and the described embodiments are merely a subset of the embodiments of the present application, rather than all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

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. As used herein, the term "and/or" includes all and any combination of one or more of the associated listed items.

In various embodiments of the present application, for convenience in description and not limitation, the term "coupled" as used in the specification and claims of the present application is not limited to physical or mechanical connections, either direct or indirect. "upper", "lower", "above", "below", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Referring to fig. 1 and fig. 2, a clamping fixture 100 for fixing a workpiece 200 to be processed is provided in the present embodiment. The clamping fixture 100 includes a base 10, a first fixing member 20, a first elastic member 30, a movable member 40 and a driving member 50, wherein the first fixing member 20 and the first elastic member 30 are fixed on the same side of the base 10, the workpiece 200 is located in a space formed between the first fixing member 20 and the first elastic member 30, the movable member 40 is movably disposed on a side of the first elastic member 30 departing from the first fixing member 20, the movable member 40 is connected to the driving member 50, and the driving member 50 can drive the movable member 40 to press the first elastic member 30, so that the first elastic member 30 deforms and is matched with the first fixing member 20 to fix the workpiece 200.

The first fixing member 20 is fixed to one side of the base 10, and the first fixing member 20 may be integrated with the base. The shape of the first fixing member 20 is not limited, and may be set according to the shape of the workpiece 200 to be clamped.

The first elastic element 30 and the first fixing element 20 are located on the same side of the base 10, and an accommodating space 37 is formed between the first elastic element 30 and the first fixing element 20, and the accommodating space 37 is used for accommodating the workpiece 200. In the present embodiment, a part of the workpiece 200 is located in the accommodating space 37.

The first elastic member 30 has elasticity, that is, the first elastic member 30 deforms when being subjected to an external force; when the external force is lost, the first elastic member 30 is restored to its original shape. The material of the first elastic member 30 includes, but is not limited to, spring steel or elastic polymer material. In this embodiment, the first elastic member 30 is made of spring steel, and the spring steel may include manganese, which is beneficial to the spring steel to deform and recover the deformation.

The first elastic member 30 is substantially in a T-shaped configuration, the first elastic member 30 includes a transverse clamping portion 32 and a longitudinal fixing portion 34, the longitudinal fixing portion 34 is fixed on the base 10, and the transverse clamping portion 32 is located on a side of the longitudinal fixing portion 34 away from the base 10 and connected to the longitudinal fixing portion 34. Wherein, the longitudinal fixing portion 34 has elasticity, and one surface of the transverse clamping portion 32 is used for clamping the workpiece 200. During the clamping process, the transverse clamping part 32 clamps the workpiece 200, and the longitudinal fixing part 34 deforms under the action of external force and drives the transverse clamping part 32 to displace; the longitudinal fixing portion 34 is deformed when the external force is lost, and drives the transverse clamping portion 32 to return to the original state.

The width of the transverse clamping portion 32 is greater than the width of the longitudinal fixing portion 34 in the direction in which the first elastic member 30 is applied with force, thereby facilitating the deformation and recovery of the longitudinal fixing portion 34 without being affected by the size of the transverse clamping portion 32.

Referring to fig. 2 and 3, the lateral clamp portion 32 includes a surface that engages the workpiece 200 and a first inclined surface 36. The surface attached to the workpiece 200 faces the accommodating space 37, the first inclined surface 36 is located on the side of the transverse clamping portion 32 away from the first fixed member 20, the movable member 40 includes a second inclined surface 42 matched with the first inclined surface 36, the first inclined surface 36 is parallel or nearly parallel to the second inclined surface 42, the included angle between the first inclined surface 36 and the second inclined surface 42 is 0-5 °, the contact area between the movable member 40 and the first elastic member 30 is increased, and therefore the acting force acting on the movable member 40 is better transmitted to the first elastic member 30.

The clamping fixture 100 further includes a connecting rod 52, the movable member 40 is fixed on the connecting rod 52, and the driving member 50 is connected to the movable member 40 through the connecting rod 52 and is used for driving the movable member 40 to move up and down along the first direction L1, so that the second inclined surface 42 presses the first inclined surface 36, and the first elastic member 30 is deformed to fix the workpiece 200.

The driving member 50 may be a motor, and in the present embodiment, the driving member 50 is disposed in the base 10.

Referring to fig. 3, a direction parallel to the first inclined surface 36 or the second inclined surface 42 is defined as a second direction L2, and a first included angle is formed between the first direction L1 and the second direction L2, wherein the first included angle between the first direction L1 and the second direction L2 is an acute angle, so that when the movable element 40 moves close to the first elastic element 30, the first elastic element 30 is pressed.

The angle of the first included angle is theta, and the range of theta is more than or equal to 5 degrees and less than or equal to 45 degrees. In some embodiments, the angle θ of the first included angle may be 10 °, 30 °, 45 °, and the like. In this case, if the angle θ is too large, the force resolved in the first direction L1 is too large, and the force acting on the first elastic member 30 is reduced, the power of the driving member 50 required for fixing the workpiece 200 is increased, thereby increasing the power consumption. In some embodiments, θ ranges from 5 ° ≦ θ ≦ 10 °.

Specifically, in a first state (i.e., an initial state) (see fig. 4), the workpiece 200 is accommodated in the accommodating space 37, two opposite surfaces of the workpiece 200 are respectively attached to the surfaces of the first fixed member 20 and the second elastic member 70, the movable member 40 is located on a side of the first elastic member 30 away from the first fixed member 20 and is not in contact with the first elastic member 30, and at this time, the first elastic member 30 is not deformed. In a second state (see fig. 2), the movable member 40 moves downward along the first direction L1 under the action of the driving member 50 until the movable member 40 and the surface of the first elastic member 30 are attached to each other, wherein, because the surfaces of the first elastic member 30 contacting the movable member 40 are both the first inclined surface 36 and the second inclined surface 42, when the movable member 40 continues to move downward along the first direction L1, the transverse clamping portion 32 is subjected to an acting force and has a tendency to move toward the workpiece 200 and is transmitted to the longitudinal fixing portion 34, and the longitudinal fixing portion 34 deforms and drives the transverse clamping portion 32 to move toward the workpiece 200 to fix the workpiece 200. In the third state (please refer to fig. 4 again), the movable member 40 moves upward along the first direction L1 under the action of the driving member 50 until the movable member 40 and the surface of the first elastic member 30 are separated from each other, the transverse clamping portion 32 loses the acting force of the movement toward the workpiece, the longitudinal fixing portion 34 loses the external acting force, and the longitudinal fixing portion 34 returns to the initial state under the action of its own elastic force and drives the transverse clamping portion 32 to return to the initial state.

Further, referring to fig. 4 again, in another embodiment, the clamping fixture 100 further includes a second fixed member 60 and a second elastic member 70, the second fixed member 60 and the second elastic member 70 are located on a side of the movable member 40 away from the first elastic member 30, the second fixed member 60 and the second elastic member 70 are symmetrically disposed with respect to the first fixed member 20 and the first elastic member 30, respectively, and another accommodating space (not shown) is formed between the second fixed member 60 and the second elastic member 70 for accommodating another workpiece 200 a.

Referring to fig. 3, the movable member 40 further includes a third inclined surface 45, the third inclined surface 45 is disposed away from the second inclined surface 42, a fourth inclined surface 72 matched with the third inclined surface 45 is disposed on a side of the second elastic member 70 away from the second fixed member 60, the third inclined surface 45 is parallel or approximately parallel to the fourth inclined surface 72, an included angle between the third inclined surface 45 and the fourth inclined surface 72 is 0 ° to 5 °, and the second fixed member 60, the second elastic member 70 and the movable member 40 are used for fixing another workpiece 200 a. That is, the first fixed member 20, the first elastic member 30, the second fixed member 60 and the second elastic member 70 share the same movable member 40. The third inclined surface 45 intersects the second inclined surface 42, and a cross section of the clamping jig 100 along a direction perpendicular to the second inclined surface 42 and the third inclined surface 45 is trapezoidal, wherein the cross section of the movable member 40 is trapezoidal. In some embodiments, the cross section is an inverted trapezoid (see fig. 3), i.e., the upper side is wide and the lower side is narrow, so that the movable member 40 can deform the first elastic member 30 and the second elastic member 70 when moving close to the base 10 along the first direction L1; in other embodiments, the cross-section is a regular trapezoid (see fig. 5), i.e., the upper side is narrow and the lower side is wide, and the movable member 40 can deform the first elastic member 30 and the second elastic member 70 when moving away from the base 10 along the first direction L1.

Referring to fig. 3, the cross section of the movable member 40 has the longest line segment D, and the shortest distance L between the first elastic member 30 and the second elastic member 70 satisfies the following formula: d is greater than L. When the movable member 40 moves toward the first elastic member 30 and the second elastic member 70 along the first direction L1, the movable member 40 simultaneously presses the first elastic member 30 and the second elastic member 70, so as to avoid the distance L from being too large, and the movable member 40 directly passes through the gap between the first elastic member 30 and the second elastic member 70 and does not function to press the first elastic member 30 and the second elastic member 70.

The second fixed member 60, the second elastic member 70 and the movable member 40 are used for clamping another workpiece 200a, and the clamping principle is the same as that of the first fixed member 20, the first elastic member 30 and the movable member 40 clamping the workpiece 200, and the description thereof is omitted.

Further, a second included angle between the direction parallel to the third inclined plane 45 and the moving direction of the movable element 40 is equal to the first included angle, so that when the movable element 40 moves towards the first elastic element 30 and the second elastic element 70 along the first direction L1, the first elastic element 30 and the second elastic element 70 receive the same acting force, and the workpiece 200 receives the same clamping acting force, which is beneficial to processing the workpiece 200.

It can be understood that the side of the second fixing element 60 away from the second elastic element 70 can also be used in combination with another elastic element to fix other workpieces, i.e. the clamping fixture 100 can share the movable element 40 and the fixing element, and some parts can be omitted to save space of the clamping fixture 100.

The clamping fixture 100 provided by the present application can fix the workpiece 200 for processing through the mutually matched base 10, the first fixing member 20, the first elastic member 30, the movable member 40 and the driving member 50, and has a simple structure. When the workpiece 200 is fixed, when a part of the workpiece 200 is fixed in the clamping fixture 100, the remaining part can be processed, that is, one workpiece 200 can be fixed by matching a group of components, thereby saving raw materials of the workpiece 200.

Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.

Claims (10)

1. A clamping jig is used for clamping a workpiece and is characterized by comprising:

a base seat, a plurality of fixing holes and a plurality of fixing holes,

the first fixing piece is fixedly arranged on the base;

the first elastic piece is fixedly arranged on the base, an accommodating space is formed between the first elastic piece and the first fixing piece, and the accommodating space is used for accommodating the workpiece;

the movable piece is movably arranged on one side, away from the first fixed piece, of the first elastic piece, a first inclined surface is arranged on one side, away from the first fixed piece, of the first elastic piece, and the movable piece comprises a second inclined surface matched with the first inclined surface; and

and the driving piece is connected with the moving piece and used for driving the moving piece to move up and down to enable the second inclined plane to extrude the first inclined plane, so that the first elastic piece is deformed and is matched with the first fixing piece to fix the workpiece.

2. The clamping jig of claim 1, wherein the first elastic member comprises a transverse clamping portion and a longitudinal fixing portion, the transverse clamping portion is located on a side of the longitudinal fixing portion facing away from the base, and the transverse clamping portion comprises a surface attached to the workpiece and the first inclined surface.

3. The clamping jig of claim 2, wherein the first elastic member comprises spring steel or elastic polymer material.

4. The clamping jig of claim 1, wherein the second inclined surface is parallel to the first inclined surface, and a direction parallel to the first inclined surface or the second inclined surface has a first included angle with a moving direction of the movable member.

5. The clamping jig of claim 4, further comprising a second fixing member and a second elastic member, wherein the second fixing member and the second elastic member are symmetrically disposed with respect to the first fixing member and the first elastic member, respectively, and another accommodating space is formed between the second fixing member and the second elastic member.

6. The clamping jig of claim 5, wherein the movable member further comprises a third inclined surface, the third inclined surface is disposed away from the second inclined surface, the third inclined surface intersects the second inclined surface, and a fourth inclined surface matched with the third inclined surface is disposed on one side of the second elastic member away from the second fixed member.

7. The clamping jig of claim 6, wherein the clamping jig has a cross section along a direction perpendicular to the second inclined surface and the third inclined surface, the cross section of the movable member has a longest line segment D, and a shortest distance L exists between the first elastic member and the second elastic member, which satisfies a formula: d is greater than L.

8. The clamping jig of claim 6, wherein a second included angle between a direction parallel to the third inclined surface and the moving direction of the movable member is equal to the first included angle.

9. The clamping jig of claim 8 wherein the first included angle is θ, and θ is in the range of 5 ° θ 45 °.

10. The clamping jig of claim 8, further comprising a connecting rod, wherein the movable member is fixed to the connecting rod, and the driving member is connected to the movable member through the connecting rod.

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