Rectangular tensile positioning and clamping device for metal test panels

Abstract

The utility model relates to metal sample board stretching device technical field, especially for a kind of rectangular tensile positioning clamping device of metal sample board, including no. The top of chuck is equipped with scale, the inside of scale is provided with locating bolt, the outside of scale is fixedly connected with adjustable stopper, the bottom of no. Chuck and no. Chuck are provided with quick clamping limiting mechanism, quick clamping limiting mechanism includes sliding slot plate, the bottom of no. Chuck and no. Chuck are fixedly connected with sliding block, the bottom of sliding block is rotatably connected with ball bearing, the outside of sliding block is fixedly connected with moving plate, the outside of moving plate is provided with positioning elastic ball, in the utility model, the positioning elastic ball of moving plate outside and the limiting elastic ball on the interface plate are mutually adapted, the position after the movement of chuck can be stably positioned, avoid unexpected displacement of chuck in test, further guarantee clamping reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of metal sample plate stretching devices, specifically a rectangular stretching positioning and clamping device for metal sample plates. Background Technology

[0002] In the field of mechanical property testing of metallic materials, rectangular tensile testing is the core means to evaluate key indicators such as tensile strength and yield strength of metal specimens. As the core component of the testing system, the positioning accuracy, adjustment flexibility and clamping stability of the clamping device directly determine the reliability of the test data and the test efficiency. The existing device is susceptible to clamping failure due to external interference after the clamps are adjusted to the correct position. Currently, when connecting two clamps, adjusting bolts are usually used. The clamping limit also depends on the tightening force of the bolts. There is no elastic locking structure. Slight vibrations during the test preparation stage (such as the vibration of laboratory equipment) or accidental contact can easily cause the bolts to loosen, causing the clamps to shift unexpectedly. The aligned specimens will then be misaligned again, which will affect the subsequent tensile testing of the metal specimen plate. Therefore, a rectangular tensile positioning and clamping device for metal sample plates is proposed to address the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a rectangular stretching positioning clamping device for metal sample plates to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A rectangular tensile positioning clamping device for a metal sample plate includes a first clamp and a second clamp. A scale is installed on the top of the first clamp, a positioning bolt is provided inside the scale, and an adjustable stop is fixedly connected to the outside of the scale. A quick clamping limiting mechanism is provided at the bottom of the first clamp and the second clamp. The quick clamping and limiting mechanism includes a slide plate. The bottom of the first clamp and the second clamp are fixedly connected to a slider. The bottom of the slider is rotatably connected to a ball. A movable plate is fixedly connected to the outside of the slider. A positioning elastic ball is provided on the outside of the movable plate. A movable groove is opened in the side wall of the slide plate. A connecting plate is fixedly connected to the outside of the slide plate. A limiting elastic ball is fixedly connected to the outside of the connecting plate.

[0005] As a further optimization of this utility model, the following features are provided: longitudinal adjusting bolts are provided inside the No. 1 chuck and the No. 2 chuck, and a transverse adjusting bolt is provided between the No. 1 chuck and the No. 2 chuck, and anti-slip textures are provided on the inner walls of the No. 1 chuck and the No. 2 chuck.

[0006] As a further optimization of this utility model, the first chuck and the second chuck have the same specifications, the scale has an alignment groove inside, the positioning bolts are symmetrically distributed inside the alignment groove, and the scale is tightly attached to the top of the first chuck by the positioning bolts.

[0007] As a further optimization of this utility model, the sliding plates are symmetrically distributed below the first and second chucks, and the sliders are symmetrically distributed at the bottom of the first and second chucks.

[0008] As a further optimization of this utility model, the slider is slidably engaged inside the slide plate, and the bottom of the ball is rotatably connected to the inner bottom wall of the slide plate.

[0009] As a further optimization of this utility model, the movable plate is slidably connected inside the movable groove, and the positioning elastic balls are symmetrically distributed on the outside of the movable plate.

[0010] As a further optimization of this utility model, the connecting plates are symmetrically distributed on the outer side of the slide plate, the limiting elastic balls are evenly distributed on the outer side of the connecting plates, and the limiting elastic balls are adapted to the positioning elastic balls.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the coordinated action of the scale, positioning bolt, and adjustable stop on the top of the first chuck enables precise alignment of the specimen, ensuring that the force is applied vertically and stably to the specimen during the tensile test, significantly improving the accuracy of the test data. Simultaneously, the longitudinal adjusting bolts inside the first and second chucks, and the transverse adjusting bolt between them, allow for flexible adjustment of the longitudinal height and transverse spacing of the chucks, easily adapting to metal specimen plates of different sizes and effectively broadening the applicability of the device. The quick-clamping limiting mechanism at the bottom is particularly practical; the sliding engagement of the slider and the slide plate, combined with the rolling support of the ball bearings, makes the movement of the chuck smoother and less strenuous. Furthermore, the positioning elastic ball on the outer side of the moving plate and the limiting elastic ball on the connecting plate complement each other, stably limiting the position of the chuck after movement, preventing unexpected displacement of the chuck during the test, and further ensuring clamping reliability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure between the No. 1 chuck and the No. 2 chuck of this utility model; Figure 3 This is a schematic diagram of the outer side of the No. 1 chuck of this utility model; Figure 4 This is a schematic diagram of the structure between the slide plate and the slider of this utility model; Figure 5This is a schematic diagram of the outer side of the slider of this utility model; Figure 6 This utility model Figure 1 A magnified structural diagram of the structure at point A in the middle.

[0013] In the diagram: 1. Chuck No. 1; 2. Chuck No. 2; 3. Longitudinal adjusting bolt; 4. Lateral adjusting bolt; 5. Anti-slip texture; 6. Scale; 7. Positioning bolt; 8. Adjustable stop; 9. Quick clamping limit mechanism; 91. Slide plate; 92. Slider; 93. Ball bearing; 94. Moving plate; 95. Positioning elastic ball; 96. Moving groove; 97. Connecting plate; 98. Limiting elastic ball. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: A rectangular tensile positioning clamping device for a metal sample plate includes a first clamp 1 and a second clamp 2. A scale 6 is installed on the top of the first clamp 1. A positioning bolt 7 is provided inside the scale 6. An adjustable stop block 8 is fixedly connected to the outside of the scale 6. A quick clamping limiting mechanism 9 is provided at the bottom of the first clamp 1 and the second clamp 2. The quick clamping and limiting mechanism 9 includes a slide plate 91, a slider 92 fixedly connected to the bottom of the first chuck 1 and the second chuck 2, a ball bearing 93 rotatably connected to the bottom of the slider 92, a movable plate 94 fixedly connected to the outside of the slider 92, a positioning elastic ball 95 provided on the outside of the movable plate 94, a movable groove 96 opened in the side wall of the slide plate 91, a connecting plate 97 fixedly connected to the outside of the slide plate 91, and a limiting elastic ball 98 fixedly connected to the outside of the connecting plate 97.

[0017] It should be noted that: the No. 1 chuck and the No. 2 chuck have the same specifications. The scale 6 has an alignment groove inside. The positioning bolts 7 are symmetrically distributed inside the alignment groove. The scale 6 is tightly attached to the top of the No. 1 chuck through the positioning bolts 7. The slide plates 91 are symmetrically distributed below the No. 1 chuck and the No. 2 chuck. The sliders 92 are symmetrically distributed at the bottom of the No. 1 chuck and the No. 2 chuck. The sliders 92 are slidably engaged inside the slide plates 91. The bottom of the ball bearings 93 is rotatably connected to the inner bottom wall of the slide plates 91.

[0018] Furthermore: the movable plate 94 is slidably connected inside the movable groove 96, the positioning elastic balls 95 are symmetrically distributed on the outside of the movable plate 94, the connecting plate 97 is symmetrically distributed on the outside of the sliding plate 91, and the limiting elastic balls 98 are evenly distributed on the outside of the connecting plate 97, and the limiting elastic balls 98 are adapted to the positioning elastic balls 95.

[0019] Specifically: By using the alignment groove of the scale 6 on the top of the first chuck 1 and the positioning bolt 7, the scale 6 is pressed tightly against the top of the chuck and fixed. The positioning bolt 7 is symmetrically tightened in the alignment groove to eliminate the installation deviation between the scale 6 and the chuck. Then, according to the width of the sample to be clamped, the adjustable stop 8 on the outside of the scale 6 is slid so that the inner side of the adjustable stop 8 is aligned with the preset clamping edge of the sample to form a "pre-positioning reference".

[0020] As a further implementation of this scheme, the No. 1 chuck 1 and the No. 2 chuck 2 are equipped with longitudinal adjusting bolts 3 inside, and a transverse adjusting bolt 4 is provided between the No. 1 chuck 1 and the No. 2 chuck 2. The inner walls of the No. 1 chuck 1 and the No. 2 chuck 2 are provided with anti-slip textures 5.

[0021] It should be noted that: when rotating the lateral adjusting bolt 4 between chuck 1 and chuck 2, clockwise rotation pushes the two chucks closer to each other in the horizontal direction; counterclockwise rotation moves the two chucks further apart until the inner walls of the two chucks are in contact with the two sides of the sample. During the adjustment process, the distance can be observed in real time through the scale 6 to ensure that the contact position between the two chucks and the sample is symmetrical and to avoid lateral displacement of the sample. When rotating the longitudinal adjusting bolt 3 inside the two chucks, clockwise rotation presses the "clamping claws" of the chucks downward or upward, shortening the distance between the upper and lower clamping surfaces of the chucks so that the clamping surfaces are in contact with the upper and lower surfaces of the sample. Counterclockwise rotation increases the distance, making it easier to put the sample in. After adjustment, it is necessary to ensure that the longitudinal clamping height of the two chucks is consistent to prevent the sample from tilting longitudinally.

[0022] Furthermore: observe the alignment status of the adjustable stop 8 with the edge of the sample by using the scale 6, and at the same time check whether the longitudinal adjusting bolts 3 and the transverse adjusting bolts 4 of the two clamps are tightened, and whether the positioning elastic ball 95 and the limiting elastic ball 98 are fully engaged. Finally, confirm that the sample has no offset or looseness and meets the clamping accuracy requirements of the tensile test.

[0023] Workflow: When performing the metal sample plate clamping operation, first adjust the longitudinal clamping height of the clamps by adjusting the longitudinal adjusting bolts 3 inside the No. 1 clamp and the No. 2 clamp according to the size of the sample to be tested. At the same time, rotate the transverse adjusting bolts 4 between the two clamps to change the transverse distance between the two clamps and initially adapt to the sample specifications. The sample is then placed between the two clamps. Using the scale 6 fixed to the top of the first clamp 1 by the positioning bolt 7, and the adjustable stop 8 on the outside of the scale 6, the sample is pushed to fit against the adjustable stop 8, so as to achieve precise alignment of the sample in the lateral direction and avoid clamping offset. During the adjustment of the chuck position, the sliders 92 at the bottom of chuck 1 and chuck 2 slide along the symmetrically distributed slide plates 91. The balls 93 at the bottom of the sliders 92 roll into contact with the inner bottom wall of the slide plates 91, greatly reducing the friction when the chuck moves and making the chuck move more smoothly. At the same time, the moving plate 94 on the outside of the sliders 92 slides synchronously in the moving groove 96 on the side wall of the slide plates 91. When the chuck moves to the target position, the positioning elastic ball 95 on the outside of the moving plate 94 will engage with the limiting elastic ball 98 evenly distributed on the connecting plate 97 on the outside of the slide plates 91 to stably limit the position of the chuck and prevent the chuck from shifting unexpectedly during the test. Finally, the anti-slip grooves 5 on the inner wall of the clamp increase the friction with the sample surface, further ensuring that the sample will not slip in the subsequent tensile test, thereby achieving accurate positioning and stable clamping of the metal sample plate, and providing a guarantee for the smooth conduct of the tensile test.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rectangular tensile positioning clamping device for a metal sample plate, comprising a first clamp (1) and a second clamp (2), characterized in that: A scale (6) is installed on the top of the first chuck (1), a positioning bolt (7) is provided inside the scale (6), an adjustable stop block (8) is fixedly connected to the outside of the scale (6), and a quick clamping limit mechanism (9) is provided at the bottom of the first chuck (1) and the second chuck (2). The quick clamping limiting mechanism (9) includes a slide plate (91), a slider (92) is fixedly connected to the bottom of the first clamp (1) and the second clamp (2), a ball (93) is rotatably connected to the bottom of the slider (92), a moving plate (94) is fixedly connected to the outside of the slider (92), a positioning elastic ball (95) is provided on the outside of the moving plate (94), a moving groove (96) is opened in the side wall of the slide plate (91), a connecting plate (97) is fixedly connected to the outside of the slide plate (91), and a limiting elastic ball (98) is fixedly connected to the outside of the connecting plate (97).

2. The rectangular tensile positioning and clamping device for a metal sample plate according to claim 1, characterized in that: The first chuck (1) and the second chuck (2) are provided with longitudinal adjusting bolts (3), and the first chuck (1) and the second chuck (2) are provided with transverse adjusting bolts (4). The inner walls of the first chuck (1) and the second chuck (2) are provided with anti-slip textures (5).

3. The rectangular tensile positioning and clamping device for a metal sample plate according to claim 1, characterized in that: The first chuck (1) and the second chuck (2) have the same specifications. The ruler (6) has an alignment groove inside. The positioning bolts (7) are symmetrically distributed inside the alignment groove, and the ruler (6) is tightly attached to the top of the first chuck (1) by the positioning bolts (7).

4. The rectangular tensile positioning and clamping device for a metal sample plate according to claim 1, characterized in that: The slide plates (91) are symmetrically distributed below the first chuck (1) and the second chuck (2), and the sliders (92) are symmetrically distributed at the bottom of the first chuck (1) and the second chuck (2).

5. The rectangular tensile positioning and clamping device for a metal sample plate according to claim 1, characterized in that: The slider (92) is slidably engaged inside the slide plate (91), and the bottom of the ball (93) is rotatably connected to the inner bottom wall of the slide plate (91).

6. The rectangular tensile positioning and clamping device for a metal sample plate according to claim 1, characterized in that: The movable plate (94) is slidably connected inside the movable groove (96), and the positioning elastic balls (95) are symmetrically distributed on the outside of the movable plate (94).

7. The rectangular tensile positioning and clamping device for a metal sample plate according to claim 1, characterized in that: The connecting plate (97) is symmetrically distributed on the outside of the slide plate (91), and the limiting elastic ball (98) is evenly distributed on the outside of the connecting plate (97), and the limiting elastic ball (98) is adapted to the positioning elastic ball (95).

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