Multipurpose clamp

Abstract

The utility model relates to a positioning fixture, in particular to a multipurpose fixture, which comprises a base, the horizontal positioning mechanism is arranged on the base and comprises a first positioning seat and a first positioning pin fixedly connected to the top of the first positioning seat; the vertical positioning mechanism is arranged on the base and comprises a second positioning seat and a second positioning pin which is telescopically and mechanically connected to the top of the second positioning seat and is used for being in contact with the bottom of the annular workpiece; the clamping mechanism is arranged on the base, and the clamping mechanism comprises a bottom claw used for clamping the bottom face of the annular workpiece and a top claw used for clamping the top face of the annular workpiece; the number of the horizontal positioning mechanisms, the number of the vertical positioning mechanisms and the number of the clamping mechanisms are multiple, and the multiple horizontal positioning mechanisms, the multiple vertical positioning mechanisms and the multiple clamping mechanisms are arranged around the base at intervals. By means of the structure, positioning can be conducted in the horizontal angle direction and the vertical height direction of the annular workpiece, and precision is high.

Description

Technical Field

[0001] The utility model relates to a positioning fixture, and in particular to a multi-purpose fixture. Background Art

[0002] The description of this part only provides background information related to the disclosure of the utility model, and does not constitute prior art.

[0003] With the continuous development of the manufacturing industry, fixtures for fixing workpieces are required in all links of processing. The application of tooling fixtures in automated production is becoming more and more extensive. Among them, pneumatic tooling fixtures have become the first choice on many production lines due to their simple structure, convenient operation, strong adaptability and other characteristics. A pneumatic tooling fixture is a tooling fixture that uses compressed air as a power source and realizes the clamping or loosening of workpieces through the drive of a cylinder, and has the advantages of flexible operation and stable pressing state.

[0004] In some existing processing scenarios, a positioning fixture is required to fix annular or circular workpieces. Since annular workpieces have high precision requirements for their own horizontal rotation angle and vertical height, existing pneumatic fixtures often have difficulty in achieving relatively accurate positioning of annular fixtures. Or, in some scenarios, a die fixture is directly opened for each annular workpiece. Although the fixing effect meets the requirements, the cost is often high.

[0005] At present, there is no multi-purpose fixture that can solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a multi-purpose fixture, which can position from two directions of the horizontal angle and vertical height of the annular workpiece through a horizontal positioning mechanism and a vertical positioning mechanism, and has high positioning accuracy.

[0007] To achieve the above purpose, the utility model discloses a multi-purpose fixture for clamping and positioning the annular workpiece, wherein a plurality of positioning holes are provided on the annular workpiece; the multi-purpose fixture includes:

[0008] A base;

[0009] A horizontal positioning mechanism, the horizontal positioning mechanism is arranged on the base, the horizontal positioning mechanism includes a first positioning seat and a first positioning pin fixedly connected to the top of the first positioning seat, and the size of the first positioning pin matches the size of the positioning hole at the corresponding position;

[0010] A vertical positioning mechanism, the vertical positioning mechanism is arranged on the base, the vertical positioning mechanism includes a second positioning seat and a second positioning pin that is telescopically mechanically connected to the top of the second positioning seat and is used for contacting the bottom of the annular workpiece;

[0011] A clamping mechanism, the clamping mechanism is arranged on the base, and the clamping mechanism includes a bottom claw for clamping the bottom surface of the annular workpiece and a top claw for clamping the top surface of the annular workpiece;

[0012] Wherein, the number of the horizontal positioning mechanism, the vertical positioning mechanism, and the clamping mechanism is multiple, and the multiple horizontal positioning mechanisms, vertical positioning mechanisms, and clamping mechanisms are arranged at intervals around the base.

[0013] Further, the top claw includes a cylinder, a claw arm, and an intermediate arm. One end of the claw arm is rotatably connected to the piston rod of the cylinder. One end of the intermediate arm is rotatably connected to the middle position of the claw arm. The other end of the intermediate arm is connected to the outer shell of the cylinder, so that when the piston rod jacks up one end of the claw arm, the middle position of the claw arm rotates relative to one end of the intermediate arm, and the other end of the claw arm moves towards the bottom claw.

[0014] Further, when the annular workpiece is placed on the fixture, the clamping mechanism is arranged inside the inner ring of the annular workpiece

[0015] Further, it further includes a positioning post. The positioning post is arranged on the base. The positioning post extends in a direction away from the base, and the length of the positioning post extending is higher than that of the horizontal positioning mechanism and the vertical positioning mechanism. The positioning post matches the position of the inner ring wall of the annular workpiece.

[0016] Further, the number of the positioning posts is multiple, and the multiple positioning posts are arranged at intervals around the base.

[0017] Further, the number of the vertical positioning mechanism and the clamping mechanism is three each. The three horizontal positioning mechanisms and the three clamping mechanisms are arranged at equal angular intervals around the base.

[0018] Further, the number of the vertical positioning mechanisms is two, and the two vertical positioning mechanisms are arranged at equal angular intervals around the base.

[0019] Further, the top of the first positioning seat is set to be conical.

[0020] By means of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0021] 1. The multi-purpose fixture of the present utility model can match the first positioning pins of the horizontal positioning mechanism with the positioning holes of the annular workpiece, so that multiple first positioning pins pass through the corresponding multiple positioning holes to achieve the positioning of the horizontal angle of the annular workpiece. The retractable second positioning pins of the vertical positioning mechanism can calibrate the height of the annular workpiece in the vertical direction during the retraction process. Finally, the positioned annular workpiece is clamped tightly by the clamping mechanism. Under the triple positioning or clamping process, the accurate fixation of the annular workpiece is achieved.

[0022] 2. The number of the horizontal positioning mechanism, the vertical positioning mechanism, and the clamping mechanism of the multi-purpose fixture of the present utility model is multiple, and multiple horizontal positioning mechanisms, vertical positioning mechanisms, and clamping mechanisms are arranged around the base at equal angles, so that the force applied by the fixture of the present utility model to the annular workpiece is uniform and stable, and the positioning accuracy is higher. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in this specification. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is an axonometric schematic diagram of a multi-purpose fixture provided by an embodiment of this specification;

[0025] Figure 2 is a schematic diagram after the multi-purpose fixture provided by an embodiment of this specification clamps the annular workpiece;

[0026] In the figure: 100, annular workpiece; 1, base; 2, horizontal positioning mechanism; 21, first positioning seat; 22, first positioning pin; 3, vertical positioning mechanism; 31, second positioning seat; 32, second positioning pin; 4, clamping mechanism; 41, bottom claw; 42, top claw; 421, cylinder; 422, claw arm; 423, intermediate arm; 5, positioning column. Detailed Embodiments

[0027] In order to enable those skilled in the art to better understand the technical solutions in this specification, the following will clearly and completely describe the technical solutions in the embodiments of this specification with reference to the drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this specification.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The implementation manners of the present utility model will be described below according to its overall structure.

[0029] Please refer to Figure 1-2 , a multi-purpose fixture for this embodiment, which is used to clamp and position the annular workpiece 100. Among them, a plurality of positioning holes are provided on the annular workpiece 100; the multi-purpose fixture includes:

[0030] Base 1;

[0031] A horizontal positioning mechanism 2, which is arranged on the base 1. The horizontal positioning mechanism 2 includes a first positioning seat 21 and a first positioning pin 22 fixedly connected to the top of the first positioning seat 21. The size of the first positioning pin 22 matches the size of the positioning hole at the corresponding position;

[0032] A vertical positioning mechanism 3, which is arranged on the base 1. The vertical positioning mechanism 3 includes a second positioning seat 31 and a second positioning pin 32 that is telescopically mechanically connected to the top of the second positioning seat 31 and is used for the bottom of the annular workpiece 100 to come into contact;

[0033] A clamping mechanism 4, which is arranged on the base 1. The clamping mechanism 4 includes a bottom claw 41 for clamping the bottom surface of the annular workpiece 100 and a top claw 42 for clamping the top surface of the annular workpiece 100;

[0034] Among them, the number of the horizontal positioning mechanism 2, the vertical positioning mechanism 3, and the clamping mechanism 4 is multiple, and the multiple horizontal positioning mechanisms 2, vertical positioning mechanisms 3, and clamping mechanisms 4 are arranged at intervals around the base 1.

[0035] When installing the fixture of this embodiment, the operator only needs to prepare a base 1 with a complete horizontal plane, and install a corresponding number of horizontal positioning mechanisms 2 at the corresponding positions of the base 1 according to the corresponding dimensions of multiple positioning holes on the annular workpiece 100. At the same time, at the corresponding positions of the base 1 corresponding to the bottom surface of the annular workpiece 100, several vertical positioning mechanisms 3 serving as support points are provided, so that the second positioning seat 31 of the vertical positioning mechanism 3 is fixedly installed on the base 1. Finally, at the corresponding positions of the annular workpiece 100 corresponding to the outer ring of the fixture of this embodiment, multiple clamping mechanisms 4 for clamping the positioned annular workpiece 100 are also installed respectively.

[0036] During the practical process of this embodiment, the operator first turns the side of the workpiece 100 with concave positioning holes towards the base 1, and respectively matches the corresponding positions of each positioning hole with the first positioning pins 22 of the horizontal positioning mechanism 2. Then, the workpiece 100 is preliminarily placed on the base 1 towards the base 1. Under the limitation of the positioning holes of the annular workpiece 100 by the first positioning pins 22 of the multiple horizontal positioning mechanisms 2, the positioning of the annular workpiece 100 in the horizontal direction and at a specified angle can be achieved. After the positioning of the annular workpiece 100 in the horizontal direction angle is completed, at this time, the second positioning pins 32 of the vertical positioning mechanism 3 extend and retract in a direction perpendicular to the base 1, so that the annular workpiece 100 is lifted or lowered to a preset horizontal height under the support of the multiple vertical positioning mechanisms 3. At this time, the positioning of the annular workpiece 100 in the vertical direction is achieved through the multiple vertical positioning mechanisms 3. Finally, after achieving the positioning of the annular workpiece 100 in the horizontal direction angle and the vertical direction height, the operator can start the operation of the top claws 42 of the clamping mechanism 4, so that one end of the top claws 42 approaches the bottom claws 41 for supporting the bottom surface of the annular workpiece 100, and finally a part of the top surface of the annular workpiece 100 is pressed by the top claws 42, so that the bottom claws 41 and the corresponding top claws 42 jointly clamp the annular workpiece 100.

[0037] In the above process, this embodiment first realizes the positioning of the horizontal angle of the annular workpiece 100 with the help of the horizontal positioning mechanism 2. In the second step, the vertical height of the annular workpiece 100 is positioned through the vertical positioning mechanism 3. In the last step, the bottom claws 41 and the top claws 42 of the clamping mechanism 4 fix the annular workpiece 100 tightly from the upper and lower directions, realizing the high-precision positioning and fixing operation of the annular workpiece 100. At the same time, since there are multiple horizontal positioning mechanisms 2, vertical positioning mechanisms 3, and clamping mechanisms 4 around the base 1 and the annular workpiece 100, the forces on the annular workpiece 100 from the horizontal positioning mechanism 2, vertical positioning mechanism 3, and clamping mechanism 4 are more stable and balanced, and the positioning accuracy is also improved.

[0038] Further, as Figure 1As shown in the figure, the top claw 42 includes a cylinder 421, a claw arm 422, and an intermediate arm 423. One end of the claw arm 422 is rotatably connected to the piston rod of the cylinder 421. One end of the intermediate arm 423 is rotatably connected to the middle position of the claw arm 422. The other end of the intermediate arm 423 is connected to the outer shell of the cylinder 421. When the piston rod jacks up one end of the claw arm 422, the middle position of the claw arm 422 rotates relative to one end of the intermediate arm 423, and the other end of the claw arm 422 moves towards the bottom claw 41. With the above structure, when the operator places the annular workpiece 100 on the fixture, and the annular workpiece 100 completes the horizontal angle positioning through the horizontal positioning mechanism 2 and the vertical height positioning through the vertical positioning mechanism 3, start the operation of the cylinder 421 of the top claw 42 in the clamping mechanism 4, so that the cylinder 421 drives the piston rod to push one end of the claw arm 422 away from the base 1. Due to the limitation of the middle position of the claw arm 422 by the intermediate arm 423, the middle position of the claw arm 422 rotates relative to the intermediate arm 423, and the other end of the claw arm 422 away from the piston rod of the cylinder 421 is pressed down in the opposite direction towards the top surface of the annular workpiece 100 until the annular workpiece 100 is completely clamped by the other end of the claw arm 422, realizing the clamping of the annular workpiece 100 by the clamping mechanism 4.

[0039] Furthermore, when the annular workpiece 100 is placed on the fixture, the clamping mechanism 4 is arranged inside the inner ring of the annular workpiece 100. Specifically, the annular workpiece 100 is set as a hollow annular geometric body. The top claw 42 extends out from the hole in the inner ring of the annular workpiece 100, while the bottom claw 41 is adjacent to the edge solid part of the annular workpiece 100, so that the clamping mechanism 4 in this embodiment can effectively avoid the external space of the annular workpiece 100 and can provide enough space for the area of the base 1 other than the projection surface of the annular workpiece 100.

[0040] Furthermore, it also includes positioning columns 5. The positioning columns 5 are arranged on the base. The positioning columns 5 extend in the direction away from the base, and the extending length of the positioning columns 5 is higher than that of the horizontal positioning mechanism 2 and the vertical positioning mechanism 3. The positioning columns 5 match the position of the inner ring wall of the annular workpiece 100. At the same time, the number of the positioning columns 5 is multiple, and the multiple positioning columns 5 are arranged at intervals around the base. With the above structure, when the operator places the annular workpiece 100 towards the base 1, since the extending length of the positioning columns 5 is higher than that of the horizontal positioning mechanism 2 and the vertical positioning mechanism 3, the inner ring wall of the annular workpiece 100 will first contact the outer wall of the positioning columns 5 away from the center direction of the annular workpiece 100, so that the annular workpiece 100 is preliminarily limited during the downward placement process, enabling the annular workpiece 100 to quickly enter the next step of cooperation with the first positioning pin 22 of the horizontal positioning mechanism 2.

[0041] Meanwhile, it is worth noting that in this embodiment, after the annular workpiece 100 is fixed, the plurality of positioning posts 5 arranged on one side of the inner wall of the annular workpiece 100 can still provide certain physical support for the annular workpiece 100 itself, dissipate the local stress during the processing of the annular workpiece 100, and avoid the offset of the annular workpiece 100.

[0042] Further, in this embodiment, the number of the vertical positioning mechanisms 2 and the clamping mechanisms 4 is three each. The three horizontal positioning mechanisms 2 and the three clamping mechanisms 4 are arranged at equal angular intervals around the base 1, and the angle between each two of them is about 120 degrees. Meanwhile, the number of the vertical positioning mechanisms 3 is two, and the two vertical positioning mechanisms 3 are arranged at equal angular intervals around the base 1, and the angle between each two of them is about 180 degrees.

[0043] Further, as Figure 1 shown, the top of the first positioning seat 21 is arranged in a conical shape, and the section of the cone with a larger diameter is located on the side away from the first positioning pin 22, and the section of the cone with a smaller diameter is located on the side close to the first positioning pin 22, and the minimum diameter is equal to the diameter of the cylindrical first positioning pin 22. Through the above structural arrangement, when the annular workpiece 100 is fixed along the horizontal angle by inserting the first positioning pin 22 into the positioning hole of the annular workpiece 100, the avoidance of the bottom surface of the annular workpiece 100 by the conically arranged first positioning seat 21 can be realized, and the collision damage to the body of the annular workpiece 100 by the first positioning seat 21 outside the first positioning pin 22 can be avoided.

[0044] Although different specific embodiments are mentioned in the content of this application, however, this application is not limited to the situations described by industry standards or embodiments. Some industry standards or implementation schemes slightly modified on the basis of the implementation described by the custom method or embodiment can also achieve the same, equivalent or similar, or predictable implementation effects after deformation as those of the above embodiments. The embodiments applying these modified or deformed data acquisition, processing, output, judgment methods, etc. still fall within the scope of the optional implementation schemes of this application.

[0045] Although this application is depicted through embodiments, those of ordinary skill in the art know that this application has many deformations and changes without departing from the spirit of this application. It is hoped that the appended embodiments include these deformations and changes without departing from this application.

Claims

1. A multi-purpose fixture for clamping and positioning an annular workpiece, wherein, A plurality of positioning holes are provided on the annular workpiece; characterized in that the multi-purpose fixture comprises: A base; A horizontal positioning mechanism, the horizontal positioning mechanism is arranged on the base, the horizontal positioning mechanism includes a first positioning seat and a first positioning pin fixedly connected to the top of the first positioning seat, and the size of the first positioning pin matches the size of the positioning hole at the corresponding position; A vertical positioning mechanism, the vertical positioning mechanism is arranged on the base, the vertical positioning mechanism includes a second positioning seat and a second positioning pin that is telescopically mechanically connected to the top of the second positioning seat and is used for contacting the bottom of the annular workpiece; A clamping mechanism, the clamping mechanism is arranged on the base, the clamping mechanism includes a bottom claw for clamping the bottom surface of the annular workpiece and a top claw for clamping the top surface of the annular workpiece; Wherein, the number of the horizontal positioning mechanism, the vertical positioning mechanism, and the clamping mechanism is multiple, and the multiple horizontal positioning mechanisms, vertical positioning mechanisms, and clamping mechanisms are arranged at intervals around the base.

2. The multi-purpose fixture according to claim 1, characterized in that: The top claw includes a cylinder, a claw arm, and an intermediate arm. One end of the claw arm is rotatably connected to the piston rod of the cylinder. One end of the intermediate arm is rotatably connected to the middle position of the claw arm. The other end of the intermediate arm is connected to the outer shell of the cylinder, so that when the piston rod jacks up one end of the claw arm, the middle position of the claw arm rotates relative to one end of the intermediate arm, and the other end of the claw arm moves towards the bottom claw.

3. The multi-purpose fixture according to claim 1, wherein: When the annular workpiece is placed on the fixture, the clamping mechanism is arranged inside the inner ring of the annular workpiece.

4. The multi-purpose fixture according to claim 1, wherein: It further includes a positioning post, the positioning post is arranged on the base, the positioning post extends in a direction away from the base, and the length of the positioning post extending is higher than that of the horizontal positioning mechanism and the vertical positioning mechanism, and the positioning post matches the position of the inner ring wall of the annular workpiece.

5. The multi-purpose fixture according to claim 4, wherein: The number of the positioning posts is multiple, and the multiple positioning posts are arranged at intervals around the base.

6. The multi-purpose fixture according to claim 1, characterized in that: The number of the vertical positioning mechanism and the clamping mechanism is three each, and the three horizontal positioning mechanisms and the three clamping mechanisms are arranged at equal angular intervals around the base.

7. The multi-purpose fixture according to claim 1, wherein: The number of the vertical positioning mechanism is two, and the two vertical positioning mechanisms are arranged at equal angular intervals around the base.

8. The multi-purpose fixture according to claim 1, characterized in that: The top of the first positioning seat is set to be conical.

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