An adaptive fixture

Abstract

The utility model relates to the technical field of clamping tooling, and more specifically, to an adaptive clamp, including a driving mechanism and a clamping mechanism connected to each other; the clamping mechanism includes a first clamping assembly for installing a first ball head, the first ball head is movably mounted on the first clamping assembly, and a first clamping portion is provided on the first ball head; a second clamping assembly is arranged opposite to the first clamping assembly, and is used to install a second ball head, the second ball head is movably mounted on the second clamping assembly, and a second clamping portion is provided on the second ball head; the first clamping assembly and the second clamping assembly are both connected to the driving mechanism, and the first ball head can adjust the direction of the first clamping portion during the rotation of the first clamping assembly, and the second ball head can adjust the direction of the second clamping portion during the rotation of the second clamping assembly. The utility model can automatically adjust the clamping direction according to the different external structures of different workpieces, thereby increasing the clamping area between the clamp and the workpiece, increasing the friction force, and thus improving the reliability of clamping.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping tooling, and more specifically, to an adaptive clamp. Background Art

[0002] Clamps are widely used in mechanized production processes to achieve clamping and position products for easy processing. In the process of automobile assembly, clamps are also needed to clamp workpieces, but existing clamps generally cannot adjust the direction of clamping. Therefore, for workpieces with different surface structures, the clamp may not be able to fully fit the workpiece surface during clamping, resulting in loose clamping and low reliability. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an adaptive clamp that can automatically adjust the clamping direction according to the different surface structures of different workpieces, thereby increasing the clamping area between the clamp and the workpiece, increasing the friction force, and further improving the clamping reliability.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] Provided is an adaptive clamp, comprising a driving mechanism and a clamping mechanism connected to each other; the clamping mechanism comprises

[0006] A first clamping assembly is used to install a first ball head, the first ball head is movably mounted on the first clamping assembly, and the first ball head is provided with a first clamping portion for clamping;

[0007] A second clamping assembly is arranged opposite to the first clamping assembly and is used to install a second ball head, the second ball head is movably mounted on the second clamping assembly, and a second clamping portion for clamping is provided on the second ball head;

[0008] The first clamping assembly and the second clamping assembly are both connected to the driving mechanism. The first ball head can adjust the direction of the first clamping part during the rotation of the first clamping assembly, and the second ball head can adjust the direction of the second clamping part during the rotation of the second clamping assembly.

[0009] The driving mechanism of the utility model is used to drive the clamping mechanism to clamp or release; the clamping mechanism is used to clamp the workpiece; specifically, the workpiece is placed between the first clamping part and the second clamping part, and the first ball head is rotated relative to the first clamping assembly, and the second ball head is rotated relative to the second clamping assembly, so as to adjust the contact orientation of the first clamping part and the second clamping part with the workpiece, so that the contact area of ​​the first clamping part and the second clamping part with the workpiece is maximized, thereby increasing the friction force and improving the reliability of clamping. In the process of clamping the workpiece, the first clamping part and the second clamping part can automatically adjust the direction and position, so as to optimize the clamping effect.

[0010] Preferably, the first clamping assembly also includes a first ball sleeve and a first ball cap, the first ball sleeve is a hollow structure, the first ball cap is a concave structure and is installed in the first ball sleeve, the first ball head is movably installed in the concave structure of the first ball cap, and the first clamping portion protrudes from the first ball sleeve; the second clamping assembly also includes a second ball sleeve and a second ball cap, the second ball sleeve is a hollow structure, the second ball cap is a concave structure and is installed in the second ball sleeve, the second ball head is movably installed in the concave structure of the second ball cap, and the second clamping portion protrudes from the second ball sleeve.

[0011] Preferably, the outer side of the first ball head is fitted with the inner side of the first ball cap, and the outer side of the second ball head is fitted with the inner side of the second ball cap.

[0012] Preferably, the end of the first ball sleeve close to the first clamping portion is narrowed, and the end of the second ball sleeve close to the second clamping portion is narrowed.

[0013] Preferably, the ends of the first ball sleeve and the second ball sleeve are both claw structures.

[0014] Preferably, the first clamping portion and the second clamping portion are both planes.

[0015] Preferably, the first clamping assembly also includes a first pillar and a first swing arm, one end of the first pillar is connected to one end of the first swing arm, and the other end is connected to the first ball cap, and the first ball sleeve is also hinged to the first pillar; the second clamping assembly also includes a second pillar and a second swing arm, one end of the second pillar is connected to one end of the second swing arm, and the other end is connected to the second ball cap, and the second ball sleeve is also hinged to the second pillar; the other end of the first swing arm and / or the other end of the second swing arm is hinged to the driving mechanism.

[0016] Preferably, the first clamping assembly also includes a first nut, a first limiting step is provided near the first spherical cap end of the first pillar, the first pillar is plugged or threadedly connected to the first swing arm, the first limiting step abuts against the first swing arm, and the first nut is installed at the end of the first pillar away from the first limiting step and is threadedly connected to the first pillar; the second clamping assembly also includes a second nut, a second limiting step is provided near the second spherical cap end of the second pillar, the second limiting step abuts against the second swing arm, the second pillar is plugged or threadedly connected to the second swing arm, and the second nut is installed at the end of the second pillar away from the second limiting step and is threadedly connected to the second pillar.

[0017] Preferably, the driving mechanism comprises a first driving member and a second driving member, the first driving member is connected to the first clamping assembly, and the second driving member is connected to the second clamping assembly.

[0018] Preferably, it further comprises a fixing mechanism, and the driving mechanism is mounted on the fixing mechanism.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The workpiece is placed between the first clamping part and the second clamping part, and the first ball head is rotated relative to the first clamping assembly, and the second ball head is rotated relative to the second clamping assembly, so as to adjust the contact position of the first clamping part and the second clamping part with the workpiece, so that the contact area of ​​the first clamping part and the second clamping part with the workpiece is maximized, thereby increasing the friction force and improving the clamping reliability. In the process of clamping the workpiece, the first clamping part and the second clamping part can roll within a certain angle range, and then automatically adjust the direction to adapt to workpieces with different curved surfaces and optimize the clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the appearance of Example 1 of the utility model;

[0022] Figure 2 It is a cross-sectional structural diagram of the utility model;

[0023] Figure 3 for Figure 2 A partial enlarged view of

[0024] Figure 4 This is a schematic diagram of the structure of Example 2 of the utility model.

[0025] The illustrations are as follows:

[0026] 1. First clamping assembly; 11. First ball head; 12. First clamping part; 13. First ball sleeve; 14. First ball cap; 15. First pillar; 16. First swing arm; 17. First nut; 18. First limiting step; 2. Second clamping assembly; 21. Second ball head; 22. Second clamping part; 23. Second ball sleeve; 24. Second ball cap; 25. Second pillar; 26. Second swing arm; 27. Second nut; 28. Second limiting step; 3. Driving mechanism; 4. Fixing mechanism. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Example 1

[0030] like Figures 1 to 4 The first embodiment of the adaptive clamp of the utility model is shown, which includes a driving mechanism 3 and a clamping mechanism connected to each other; the clamping mechanism includes

[0031] A first clamping assembly 1, used for installing a first ball head 11, the first ball head 11 is movably mounted on the first clamping assembly 1, and a first clamping portion 12 for clamping is provided on the first ball head 11;

[0032] The second clamping assembly 2 is arranged opposite to the first clamping assembly 1 and is used to install a second ball head 21. The second ball head 21 is movably mounted on the second clamping assembly 2. The second ball head 21 is provided with a second clamping portion 22 for clamping;

[0033] The first clamping assembly 1 and the second clamping assembly 2 are both connected to the driving mechanism 3. The first ball head 11 can adjust the direction of the first clamping portion 12 during the rotation of the first clamping assembly 1, and the second ball head 21 can adjust the direction of the second clamping portion 22 during the rotation of the second clamping assembly 2.

[0034] As the name implies, the ball head is a spherical structure. The first and second are only distinguished by naming. The first ball head 11 and the second ball head 21 have the same structure and are arranged opposite to each other. The first ball head 11 and the second ball head 21 can roll within a certain angle range to adapt to the clamping of workpieces with different curved surfaces.

[0035] As an embodiment of the present utility model, the first clamping assembly 1 also includes a first ball sleeve 13 and a first ball cap 14, the first ball sleeve 13 is a hollow structure, the first ball cap 14 is a concave structure and is installed in the first ball sleeve 13, the first ball head 11 is movably installed in the concave structure of the first ball cap 14, and the first clamping portion 12 protrudes from the first ball sleeve 13; the second clamping assembly 2 also includes a second ball sleeve 23 and a second ball cap 24, the second ball sleeve 23 is a hollow structure, the second ball cap 24 is a concave structure and is installed in the second ball sleeve 23, the second ball head 21 is movably installed in the concave structure of the second ball cap 24, and the second clamping portion 22 protrudes from the second ball sleeve 23.

[0036] The first ball cap 14 is used to accommodate the first ball head 11. The first ball cap 14 with a concave structure is convenient for placing the first ball head 11. The first ball head 11 can roll in the first ball cap 14, so as to adjust the direction of the first clamping part 12; the first ball sleeve 13 is used to install and fix the first ball cap 14, and the first ball sleeve 13 can also limit the first ball head 11, so that the first ball head 11 is wrapped to prevent the first ball head 11 from detaching; the function of the second ball cap 24 is similar to that of the first ball cap 14; the function of the second ball sleeve 23 is similar to that of the first ball sleeve 13.

[0037] Preferably, the outer side of the first ball head 11 is fitted with the inner side of the first ball cap 14, and the outer side of the second ball head 21 is fitted with the inner side of the second ball cap 24. The concave structure of the first ball cap 14 and the second ball cap 24 can be set as an arc-shaped depression, so that the first ball head 11 and the second ball head 21 of the spherical structure can better fit with the first ball cap 14 and the second ball cap 24, which is convenient for limiting the position of the first ball head 11 and the second ball head 21; at the same time, it is also convenient for the first ball head 11 and the second ball head 21 to roll adaptively according to the outer shape of the workpiece to adjust the orientation of the first clamping part 12 and the second clamping part 22.

[0038] As an embodiment of the present invention, the end of the first ball sleeve 13 close to the first clamping portion 12 is narrowed, and the end of the second ball sleeve 23 close to the second clamping portion 22 is narrowed. Specifically, a gap is left between the first ball sleeve 13 and the first ball cap 14, and a gap is also left between the second ball sleeve 23 and the second ball cap 24, so as to facilitate the rolling of the first ball head 11 relative to the first ball cap 14 and the second ball head 21 relative to the second ball cap 24; and the end of the first ball sleeve 13 is set to be narrower, so as to limit the rotation angle of the first ball head 11 and prevent the first ball head 11 from being separated from the first ball cap 14; the second ball sleeve 23 is set in the same way.

[0039] As an embodiment of the present invention, the ends of the first ball sleeve 13 and the second ball sleeve 23 are both claw structures.

[0040] The ball sleeve of the claw structure is convenient for limiting and clamping the ball head, and can also be replaced by a hook. Within the scope of knowledge of those skilled in the art, the narrowed ends of the first ball sleeve 13 and the second ball sleeve 23 can also be other structures to facilitate limiting and wrapping the first ball head 11 and the second ball head 21.

[0041] As an embodiment of the present invention, the first clamping portion 12 and the second clamping portion 22 are both planes.

[0042] The planar first clamping portion 12 and the second clamping portion 22 can increase the contact area with the workpiece, thereby increasing the friction force and improving the clamping reliability.

[0043] Example 2

[0044] like Figure 4 This is the second embodiment of the adaptive clamp of the utility model. This embodiment is similar to the first embodiment, except that it further comprises a fixing mechanism 4, and the driving mechanism 3 is mounted on the fixing mechanism 4. The fixing mechanism 4 is used to install and fix the driving mechanism 3.

[0045] In this embodiment, if Figure 4 As shown, there is one driving mechanism 3, which is used to drive the second clamping assembly 2. The second clamping assembly 2 is connected to the driving mechanism 3, specifically, the second swing arm 26 is hinged to the driving mechanism 3, and the first clamping assembly 1 is connected to the fixing mechanism 4, so that the first clamping assembly 1 is fixed and the second clamping assembly 2 can be driven by the driving mechanism 3, and the workpiece can also be clamped and released. Here, the first clamping assembly 1 and the second clamping assembly 2 can also be interchangeable.

[0046] Example 3

[0047] The following is a third embodiment of an adaptive clamp of the utility model. This embodiment is similar to the first embodiment, except that the first clamping assembly 1 also includes a first pillar 15 and a first swing arm 16. One end of the first pillar 15 is connected to one end of the first swing arm 16, and the other end is connected to the first ball cap 14. The first ball sleeve 13 is also hinged to the first pillar 15. The second clamping assembly 2 also includes a second pillar 25 and a second swing arm 26. One end of the second pillar 25 is connected to one end of the second swing arm 26, and the other end is connected to the second ball cap 24. The second ball sleeve 23 is also hinged to the second pillar 25. The other end of the first swing arm 16 and / or the other end of the second swing arm 26 are hinged to the driving mechanism 3.

[0048] The first support 15 is used to install and fix the first ball cap 14 and the first ball sleeve 13; the first ball sleeve 13 is hinged to the first support 15, so as to follow the rolling of the first ball head 11 and adjust its direction, so as to always maintain its limiting and wrapping of the first ball head 11; one end of the first swing arm 16 is connected to the first support 15, and the other end is hinged to the driving mechanism 3, so as to swing through the driving mechanism 3, thereby driving the first support 15 and the first ball cap 14, The first ball head 11 changes position, so as to achieve approaching or moving away from the second ball head 21; the second support 25 is used to install and fix the second ball cap 24 and the second ball sleeve 23; the second ball sleeve 2 3 is hinged to the second support 25 so as to follow the rolling of the second ball head 21 and adjust its direction, so as to always maintain its limit and wrapping of the second ball head 21; one end of the second swing arm 26 is connected to the second support 25, and the other end is hinged to the driving mechanism 3, so as to swing through the driving mechanism 3, thereby driving the second support 25 and the second ball cap 24, and the second ball head 21 to change their positions, so as to achieve approaching or moving away from the first ball head 11; the first swing arm 16 and the second swing arm 26 can be connected to the driving mechanism 3 one by one to achieve unilateral swinging and the other side is fixed; or they can be connected to the driving mechanism 3 at the same time to achieve swinging on both sides. Within the scope of knowledge of those skilled in the art, the first swing arm 16 and the second swing arm 26 can also be omitted, and the driving mechanism 3 can be directly applied to the first support 15 and / or the second support 25 to make the first support 15 and / or the second support 25 move linearly, so as to make the first ball head 11 approach or move away from the second ball head 21, so as to achieve clamping or loosening of the workpiece.

[0049] As an embodiment of the utility model, the first clamping assembly 1 also includes a first nut 17, a first limiting step 18 is provided at the end of the first pillar 15 near the first spherical cap 14, the first pillar 15 is plugged or threadedly connected to the first swing arm 16, the first limiting step 18 abuts against the first swing arm 16, and the first nut 17 is installed at the end of the first pillar 15 away from the first limiting step 18 and is threadedly connected to the first pillar 15; the second clamping assembly 2 also includes a second nut 27, a second limiting step 28 is provided at the end of the second pillar 25 near the second spherical cap 24, the second limiting step 28 abuts against the second swing arm 26, the second pillar 25 is plugged or threadedly connected to the second swing arm 26, and the second nut 27 is installed at the end of the second pillar 25 away from the second limiting step 28 and is threadedly connected to the second pillar 25.

[0050] The first nut 17 is used to tighten the first swing arm 16 after being connected to the first pillar 15 to prevent the first pillar 15 from detaching from the first swing arm 16. The first limiting step 18 is used to limit the first swing arm 16 when being connected to the first pillar 15 to achieve a better connection effect. The function of the second nut 27 is similar to that of the first nut 17. The function of the second limiting step 28 is similar to that of the first limiting step 18.

[0051] Example 4

[0052] The following is the fourth embodiment of an adaptive clamp of the utility model. This embodiment is similar to the embodiment 1, except that the driving mechanism 3 includes a first driving member and a second driving member, the first driving member is connected to the first clamping component 1, and the second driving member is connected to the second clamping component 2.

[0053] The first driving member and the second driving member drive the first clamping assembly 1 and the second clamping assembly 2 respectively, so as to simultaneously drive the first ball head 11 and the second ball head 21 to approach and move away from each other, thereby increasing the speed of clamping and separation. Preferably, the first driving member and the second driving member can be cylinders, electric cylinders, or other driving structures.

[0054] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An adaptive clamp, comprising a driving mechanism (3) and a clamping mechanism connected to each other; characterized in that: The clamping mechanism comprises A first clamping assembly (1) is used to install a first ball head (11), wherein the first ball head (11) is movably mounted on the first clamping assembly (1), and a first clamping portion (12) for clamping is provided on the first ball head (11); A second clamping assembly (2) is arranged opposite to the first clamping assembly (1) and is used to install a second ball head (21); the second ball head (21) is movably mounted on the second clamping assembly (2); and the second ball head (21) is provided with a second clamping portion (22) for clamping; The first clamping assembly (1) and the second clamping assembly (2) are both connected to the driving mechanism (3); the first ball head (11) can adjust the orientation of the first clamping portion (12) during the rotation of the first clamping assembly (1); and the second ball head (21) can adjust the orientation of the second clamping portion (22) during the rotation of the second clamping assembly (2).

2. The adaptive fixture according to claim 1, characterized in that: The first clamping assembly (1) further comprises a first ball sleeve (13) and a first ball cap (14); the first ball sleeve (13) is a hollow structure; the first ball cap (14) is a concave structure and is installed in the first ball sleeve (13); the first ball head (11) is movably installed in the concave structure of the first ball cap (14); and the first clamping portion (12) protrudes from the first ball sleeve (13); the second clamping assembly (2) further comprises a second ball sleeve (23) and a second ball cap (24); the second ball sleeve (23) is a hollow structure; the second ball cap (24) is a concave structure and is installed in the second ball sleeve (23); the second ball head (21) is movably installed in the concave structure of the second ball cap (24); and the second clamping portion (22) protrudes from the second ball sleeve (23).

3. The adaptive fixture according to claim 2, characterized in that: The outer side of the first ball head (11) is fitted with the inner side of the first ball cap (14), and the outer side of the second ball head (21) is fitted with the inner side of the second ball cap (24).

4. The adaptive fixture according to claim 2, characterized in that: The end of the first ball sleeve (13) close to the first clamping portion (12) is narrowed, and the end of the second ball sleeve (23) close to the second clamping portion (22) is narrowed.

5. The adaptive fixture according to claim 4, characterized in that: The ends of the first ball sleeve (13) and the second ball sleeve (23) are both claw structures.

6. The adaptive clamp according to any one of claims 1 to 5, characterized in that: The first clamping portion (12) and the second clamping portion (22) are both planes.

7. The adaptive fixture according to claim 2, characterized in that: The first clamping assembly (1) further comprises a first pillar (15) and a first swing arm (16); one end of the first pillar (15) is connected to one end of the first swing arm (16), and the other end is connected to the first ball cap (14); the first ball sleeve (13) is also hinged to the first pillar (15); the second clamping assembly (2) further comprises a second pillar (25) and a second swing arm (26); one end of the second pillar (25) is connected to one end of the second swing arm (26), and the other end is connected to the second ball cap (24); the second ball sleeve (23) is also hinged to the second pillar (25); the other end of the first swing arm (16) and / or the other end of the second swing arm (26) is hinged to the driving mechanism (3).

8. The adaptive fixture according to claim 7, characterized in that: The first clamping assembly (1) further comprises a first nut (17); a first limiting step (18) is provided at the end of the first pillar (15) close to the first ball cap (14); the first pillar (15) is plugged or threadedly connected to the first swing arm (16); the first limiting step (18) abuts against the first swing arm (16); the first nut (17) is mounted on the end of the first pillar (15) away from the first limiting step (18) and is threadedly connected to the first pillar (15); the second clamping assembly (2) further comprises a second nut (27); a second limiting step (28) is provided at the end of the second pillar (25) close to the second ball cap (24); the second limiting step (28) abuts against the second swing arm (26); the second pillar (25) is plugged or threadedly connected to the second swing arm (26); the second nut (27) is mounted on the end of the second pillar (25) away from the second limiting step (28) and is threadedly connected to the second pillar (25).

9. The adaptive fixture according to claim 1, characterized in that: The driving mechanism (3) comprises a first driving member and a second driving member, the first driving member is connected to the first clamping assembly (1), and the second driving member is connected to the second clamping assembly (2).

10. The adaptive clamp according to claim 1, characterized in that: It also comprises a fixing mechanism (4), and the driving mechanism (3) is mounted on the fixing mechanism (4).

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