Non-standard test fixture

Abstract

The utility model belongs to the technical field of clamps, and particularly discloses a non-standard test clamp which comprises a base, a seat shaft is fixedly arranged on the inner side of the base in a penetrating mode, the outer surface of the seat shaft is rotationally connected with an overturning frame, and the top of the overturning frame is fixedly connected with a clamping contact. The base is provided with a manual adjusting mechanism used for changing the position of the clamping contact, the inner surface of the base is slidably connected with a connecting rod through a lifting limiting mechanism, the top of the connecting rod is provided with an inner supporting table, and the manual adjusting mechanism comprises a frame shaft rotationally connected to the inner surface of the overturning frame. According to the non-standard test fixture, through the designed multi-axis movement and clamping mechanism, the device can uniformly clamp an arc-shaped test object in the clamping process, each clamping point can be adjusted according to the design, it is ensured that force applied to the arch-shaped part of the test object is uniformly distributed, the problem that local stress is too large or not uniform is avoided, and the test accuracy is improved. Therefore, the risks of deformation and damage are reduced.

Description

Technical Field

[0001] This application relates to the technical field of jigs, and specifically to a non-standard test jig. Background Technique

[0002] A non-standard test jig refers to a customized test tool used to conduct customized tests and inspections on products or components under specific test environments or test requirements. Usually, product tests rely on standardized test equipment and jigs, but in some special test scenarios or for certain test objects, it may not be possible to directly use general standard test equipment, and in such cases, it is necessary to design and manufacture non-standard test jigs.

[0003] Currently, during the process of fixing an arc-shaped test object, generally, its bow-shaped part is directly extruded through a pressing structure to make it stable on the test bench. However, when the bow-shaped part of the test object is being extruded, it is easy to cause uneven stress to be applied to the bow-shaped part, resulting in deformation or even damage to the arc-shaped test object. Content of the Utility Model

[0004] In view of this, the purpose of the present utility model is to solve the deficiencies in the background technique and propose a non-standard test jig to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present utility model provides a non-standard test jig, including a base. A seat shaft is fixedly penetrated through the inner side of the base. A flip frame is rotatably connected to the outer surface of the seat shaft. A clamping contact head is fixedly connected to the top of the flip frame. A manual adjustment mechanism for changing the position of the clamping contact head is arranged on the base. A connecting rod is slidably connected to the inner surface of the base through a lifting and limiting mechanism. An inner support platform is arranged at the top of the connecting rod.

[0006] Preferably, the manual adjustment mechanism includes a frame shaft rotatably connected to the inner surface of the flip frame. A lead screw is threadedly sleeved on the inner surface of the frame shaft. The two clamping contact heads can be driven through the manual adjustment mechanism to move closer or farther away from each other (when moving closer, they move downward simultaneously; when moving farther away, they move upward simultaneously). [[ID=?]]

[0007] Preferably, a crank is arranged at one end of the lead screw. The inner side of the base is fixedly connected with an opening platform, and the inner side of the opening platform is slidably connected to the outer surface of the lead screw. Two sets of threads with the same length and opposite directions are respectively arranged on the outer surface of the lead screw from the opening platform towards both ends.

[0008] Preferably, the lifting and limiting mechanism includes a rotating shaft rotatably connected to the inner surface of the base. A gear is fixedly sleeved on the outer surface of the rotating shaft.

[0009] Preferably, a rack plate is fixedly connected to the bottom of the connecting rod, the outer surface of the rack plate is meshed with the outer surface of the gear, and a knob is arranged at one end of the rotating shaft.

[0010] Preferably, a plurality of groups of limiting holes are formed in the outer surface of the knob, a jack is formed in the outer surface of the base, and a limiting shaft is movably inserted into the inner side of the jack.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. For this non-standard test fixture, through the designed multi-axis movement and clamping mechanism, the device can achieve uniform clamping of the arc-shaped test object during the clamping process. Each clamping point can be adjusted according to the design to ensure that the force applied to the bow-shaped part of the test object is evenly distributed, avoiding the problems of excessive local stress or unevenness, thereby reducing the risk of deformation and damage.

[0013] 2. For this non-standard test fixture, the designs of the crank and the knob during the operation process make the clamping process more controllable and safe. The operator can accurately adjust the clamping force and position according to needs, avoiding problems caused by unnecessary force application or operation errors, and improving the safety and reliability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of this application;

[0015] Figure 2 It is a schematic diagram of the surface structure of the lead screw of this application;

[0016] Figure 3 It is a schematic diagram of the bottom structure of the inner support platform of this application;

[0017] Figure 4 It is a schematic diagram of the surface structure of the knob of this application.

[0018] Among them: 1. Base; 2. Seat shaft; 3. Flipping frame; 4. Clamping contact; 5. Frame shaft; 6. Lead screw; 7. Crank; 8. Open platform; 9. Connecting rod; 10. Inner support platform; 11. Rotating shaft; 12. Gear; 13. Rack plate; 14. Knob; 15. Limiting hole; 16. Jack; 17. Limiting shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0020] Please refer to Figures 1-4 , a non-standard test fixture, including a base 1. A seat shaft 2 is fixedly penetrated through the inner side of the base 1. A turning frame 3 is rotatably connected to the outer surface of the seat shaft 2. A clamping contact 4 is fixedly connected to the top of the turning frame 3. A manual adjustment mechanism for changing the position of the clamping contact 4 is arranged on the base 1. A connecting rod 9 is slidably connected to the inner surface of the base 1 through a lifting limit mechanism. An inner support platform 10 is arranged at the top of the connecting rod 9.

[0021] Through the above technical solution, when the device is in use, the arc-shaped test object needs to be placed on the top of the base 1. Through the manual adjustment mechanism, the two clamping contacts 4 can move downward synchronously during the process of approaching each other until they stably clamp the arc-shaped test object from above. At the same time, through the lifting limit mechanism, the inner support platform 10 can move upward to stably abut against the inner side of the bow of the arc-shaped test object from below.

[0022] Specifically, the manual adjustment mechanism includes a frame shaft 5 rotatably connected to the inner surface of the turning frame 3. A lead screw 6 is threadedly sleeved on the inner surface of the frame shaft 5.

[0023] Through the above technical solution, two sets of threads with the same length and opposite directions are respectively opened on the outer surface of the lead screw 6 from the opening platform 8 to both ends. This design is to make the two frame shafts 5 move in opposite directions.

[0024] Specifically, a crank 7 is arranged at one end of the lead screw 6. An opening platform 8 is fixedly connected to the inner side of the base 1, and the inner side of the opening platform 8 is slidably connected to the outer surface of the lead screw 6.

[0025] Through the above technical solution, the lead screw 6 is relatively smooth at the opening platform 8, and the lead screw 6 can slide up and down along the opening platform 8 to cooperate with the movement of the two frame shafts 5.

[0026] Specifically, the lifting limit mechanism includes a rotating shaft 11 rotatably connected to the inner surface of the base 1. A gear 12 is fixedly sleeved on the outer surface of the rotating shaft 11.

[0027] Through the above technical solution, when the rotary knob 14 drives the rotating shaft 11 to rotate, the two gears 12 will rotate synchronously.

[0028] Specifically, a rack plate 13 is fixedly connected to the bottom of the connecting rod 9. The outer surface of the rack plate 13 is meshed with the outer surface of the gear 12. A knob 14 is arranged at one end of the rotating shaft 11.

[0029] Through the above technical solution, two sets of the rack plate 13 and the corresponding gear 12 are provided to make the two connecting rods 9 support the inner support platform 10 relatively stably and symmetrically.

[0030] Specifically, a number of groups of limiting holes 15 are formed on the outer surface of the knob 14, and an insertion hole 16 is formed on the outer surface of the base 1. A limiting shaft 17 is movably inserted into the inner side of the insertion hole 16.

[0031] Through the above technical solution, one group of insertion holes 16 is designed, while multiple groups of limiting holes 15 are designed on the knob 14. The limiting shaft 17 can pass through different limiting holes 15 and then be inserted into the insertion hole 16.

[0032] Working principle: When the device clamps and fixes the arc-shaped test object, first place the arc-shaped test object on the top of the base 1, and then shake the crank 7 to drive the lead screw 6 to rotate. During the rotation of the lead screw 6, the two sets of frame shafts 5 will move away from each other along the surface of the lead screw 6. During this period, the lead screw 6 will also slide upward along the opening platform 8 (the opening platform 8 plays a role of relative limitation on the lead screw 6, making it move along a fixed track). During this process, the flipping frame 3 will rotate along the seat shaft 2, so that the two sets of clamping contacts 4 gradually move downward while approaching each other until they relatively stably clamp the arc-shaped outer surface of the arc-shaped test object above. At the same time, the knob 14 can be rotated to drive the rotating shaft 11 to rotate, and then drive the two sets of gears 12 to rotate self - synchronously. During the self - rotation of the gears 12, they will drive the rack plate 13 engaged with them to gradually move upward, so as to move the inner support platform 10 upward through the connecting rod 9 until the inner support platform 10 abuts against the inner side of the arc - shaped part of the arc-shaped test object below. By inserting the limiting shaft 17 through the limiting hole 15 and into the insertion hole 16, it can ensure that the inner support platform 10 is in a stable support state, so as to stably clamp and fix the arc-shaped test object simultaneously from above and below. Since the movement trajectory and force application of each clamping point can be precisely controlled during the clamping process, the deformation and damage of the arc-shaped test object can be significantly reduced. Especially for test objects with complex shapes or vulnerable to external forces, such as materials with relatively weak arc-shaped parts, this improvement can greatly enhance their stability and durability during the test, reduce the deformation caused by uneven force on the arc-shaped part, and reduce the damage of the test object.

[0033] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A non-standard test fixture, comprising a base (1), characterized in that: A seat shaft (2) is fixedly inserted through the inner side of the base (1). A turning frame (3) is rotatably connected to the outer surface of the seat shaft (2). A clamping contact head (4) is fixedly connected to the top of the turning frame (3). A manual adjustment mechanism for changing the position of the clamping contact head (4) is arranged on the base (1). A connecting rod (9) is slidably connected to the inner surface of the base (1) through a lifting limit mechanism. An inner support platform (10) is arranged at the top of the connecting rod (9). The manual adjustment mechanism includes a frame shaft (5) rotatably connected to the inner surface of the turning frame (3). A lead screw (6) is threadedly sleeved on the inner surface of the frame shaft (5).

2. The non-standard test fixture according to claim 1, wherein: A crank (7) is arranged at one end of the lead screw (6). An opening platform (8) is fixedly connected to the inner side of the base (1), and the inner side of the opening platform (8) is slidably connected to the outer surface of the lead screw (6).

3. The non-standard test fixture according to claim 1, wherein: The lifting limit mechanism includes a rotating shaft (11) rotatably connected to the inner surface of the base (1). A gear (12) is fixedly sleeved on the outer surface of the rotating shaft (11).

4. The non-standard test fixture according to claim 3, wherein: A rack plate (13) is fixedly connected to the bottom of the connecting rod (9). The outer surface of the rack plate (13) is meshed with the outer surface of the gear (12). A knob (14) is arranged at one end of the rotating shaft (11).

5. The non-standard test fixture according to claim 4, characterized in that: A number of groups of limit holes (15) are formed on the outer surface of the knob (14). A jack (16) is formed on the outer surface of the base (1). A limit shaft (17) is movably inserted into the inner side of the jack (16).

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