An adjustable specimen measurement fixture

Abstract

The utility model discloses an adjustable sample measurement clamp, including the sliding slot seat, the inner chamber of sliding slot seat is opened with the sliding slot, and the inner chamber sliding slot department of sliding slot seat is inserted with the plug -in board symmetry, the upper surface of right angle board is connected with the stud thread, and the bottom fixed connection of stud has the round block, and the outer wall of round block is connected with the lower pressure plate, and is the rotation connection, and the position of lower pressure plate is located the top of the object board, and the side wall fixed connection of lower pressure plate has the side rod, and the outer wall of side rod and the strip -shaped through groove of right angle board are connected, and are the clearance fit. Through the combination of sliding slot seat and plug -in board, the right angle board of plug -in board surface is symmetrically arranged, the measurement work to the fractured sample is completed, and different specifications, different length samples are measured within the length set in the sliding slot seat, the test number caused by time -consuming and error can be reduced, complex operation steps and skills are not needed, convenient use can be carried out, the measurement error caused by sample misalignment is reduced, and sample measurement efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of physical, chemical and mechanical property testing technology, specifically to an adjustable sample measuring fixture. Background Technology

[0002] Elongation and reduction of area are important indicators in the tensile testing of the physical, chemical, and mechanical properties of metallic materials. During the test, the gauge length and diameter of the standard specimen before and after fracture must be measured to calculate the elongation and reduction of area values. Because the fracture surface of the specimen after tensile failure is irregularly shaped, it is difficult to perfectly align the two fracture surfaces in actual measurement, especially during manual operation. This results in low efficiency, poor repeatability, and significant errors between different operators, leading to inaccurate test results.

[0003] Standardized testing methods clearly define elongation and reduction of area as crucial indicators in tensile testing of metallic materials' physical, chemical, and mechanical properties. After a specimen breaks, it splits into two segments. These segments need to be reassembled, and the change in gauge length needs to be measured to calculate the elongation. To address the difficulties in manually aligning specimens, inaccurate measurements, and low efficiency in measuring elongation and reduction of area after fracture in tensile testing, we propose an adjustable specimen measuring fixture. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable sample measuring fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable sample measuring fixture, including a sliding base, the inner cavity of which is provided with a sliding groove, and insert plates symmetrically inserted into the sliding groove of the inner cavity of the sliding base with clearance fit, right-angle plates fixedly connected to the upper surfaces of the two insert plates near the inner side, and the two right-angle plates facing each other, a support plate fixedly connected to the inner sidewalls of the two right-angle plates near the bottom, an electromagnet installed at the center of the upper surface of the support plate, a circular hole opened in the sidewall of the support plate, a strip-shaped through groove opened in the sidewall of the right-angle plate, and the strip-shaped through groove is vertical, a stud threadedly connected to the upper surface of the right-angle plate, a circular block fixedly connected to the bottom of the stud, a lower pressure plate sleeved on the outer wall of the circular block with rotatable connection, the lower pressure plate being located at the top of the support plate, a side rod fixedly connected to the sidewall of the lower pressure plate, and the outer wall of the side rod sleeved with the strip-shaped through groove of the right-angle plate with clearance fit;

[0006] The two ends of the slide seat are fixedly connected to the brackets, the side wall of the brackets is fixedly connected to the hydraulic cylinder, the piston rod of the other end of the hydraulic cylinder is fixedly connected to the side wall of the right angle plate, the center of the outer wall of the hydraulic cylinder is fixedly connected to the support block, and the lower surface of the support block is fixedly connected to the center of the upper surface of the bracket.

[0007] Preferably, there are two slide seats, which are symmetrically arranged. Side blocks are fixedly connected side by side on the side walls of the slide seats. A round hole is opened at the center of the upper surface of the side block. An inner plate is inserted into the inner side of the two side blocks on the same side. Screw holes are opened on both sides of the inner plate, and the screw holes of the inner plate correspond to the round holes of the side blocks. Screws are inserted into the screw holes of the inner plate and the round holes of the side blocks, and the side wall of the screw is threaded to the screw hole of the inner plate.

[0008] Preferably, the side wall of the insert plate is provided with a groove, the insert plate has four grooves, and the grooves are arranged symmetrically side by side. A rotating wheel is inserted into the groove of the insert plate, and a rotating shaft is rotatably connected to the center of the rotating wheel. The two ends of the rotating shaft are rotatably connected to the inner cavity of the insert plate, and the outer side of the rotating shaft fits against the inner cavity of the slide seat.

[0009] Preferably, there are four brackets, which are fixedly connected to both ends of the slide seat. There are also four hydraulic cylinders. The side wall ports of the hydraulic cylinders are connected to pipelines, and the other ends of the two pipelines on the same side are connected to a manifold valve.

[0010] Preferably, a round hole gasket is glued to the upper surface of the support plate, and the center of the round hole gasket is in clearance fit with the side wall of the electromagnet, and a square gasket is glued to the lower surface of the pressure plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By combining the sliding base and the insert plate, the right-angled plates on the surface of the insert plate are symmetrically arranged and slide in the inner cavity of the sliding base. The right-angled plates on both sides are controlled by a hydraulic cylinder to slide. Then, the stud is rotated to make the lower pressure plate fit against the support plate. Then, the sample is placed between them, and further fine adjustment is made according to the length of the sample to make the sample horizontally aligned. Then, calipers are used to accurately measure and complete the measurement of the fractured sample. Samples of different specifications and lengths can be measured within the length set by the sliding base. This can reduce the number of tests caused by time consumption and errors, eliminate the need for complicated operating steps and skills, make it easy to use, reduce measurement errors caused by sample misalignment, and improve sample measurement efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1Detailed structural diagram of the middle sliding groove seat;

[0014] Figure 3 for Figure 1 Detailed structural diagram of the right-angle plate;

[0015] Figure 4 for Figure 3 Detailed structural diagram of the middle and lower pressure plates;

[0016] Figure 5 for Figure 4 Detailed structural diagram of the middle and lower pressure plates;

[0017] Figure 6 for Figure 1 Detailed structural diagram of the inner panel;

[0018] In the diagram: 1. Slide seat; 2. Insert plate; 3. Right angle plate; 4. Stud; 5. Round block; 6. Lower pressure plate; 7. Side rod; 8. Support plate; 9. Electromagnet; 10. Round hole gasket; 11. Square gasket; 12. Bracket; 13. Hydraulic cylinder; 14. Support block; 15. Pipeline; 16. Manifold valve; 17. Side block; 18. Inner plate; 19. Screw; 20. Shaft; 21. Rotary wheel. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-6 This utility model provides a technical solution: an adjustable sample measuring fixture, including a sliding base 1, the inner cavity of which is provided with a sliding groove, and insert plates 2 are symmetrically inserted into the sliding groove of the inner cavity of the sliding base 1 with clearance fit. Right-angle plates 3 are fixedly connected to the upper surfaces of the two insert plates 2 near their inner sides, and the two right-angle plates 3 face each other. A support plate 8 is fixedly connected to the inner sidewalls of the two right-angle plates 3 near their bottom. An electromagnet is installed at the center of the upper surface of the support plate 8. 9. The side wall of the support plate 9 has a round hole, the side wall of the right angle plate 3 has a strip groove, and the strip groove is vertical. The upper surface of the right angle plate 3 is threaded with a stud 4, the bottom of the stud 4 is fixedly connected with a round block 5, the outer wall of the round block 5 is sleeved with a lower pressure plate 6, and the lower pressure plate 6 is rotatably connected. The position of the lower pressure plate 6 is located at the top of the support plate 8. The side wall of the lower pressure plate 6 is fixedly connected with a side rod 7, and the outer wall of the side rod 7 is sleeved with the strip groove of the right angle plate 3, and the clearance fit is made.

[0021] This device is used in the testing of physical, chemical, and mechanical properties. It works through the cooperation of structures such as the sliding base 1 and the insert plate 2. After the physical, chemical, and mechanical properties of the metallic material are tested, when selecting a fractured sample for measurement, the sliding base 1 and the insert plate 2 are first assembled. The inner cavity of the sliding base 1 has a groove, and the edges of the insert plate 2 can slide within the inner cavity of the sliding base 1. The insert plates 2 are symmetrically arranged, and their movement is adjusted according to the sample length. Then, the stud 4 rotates on top of the right-angle plate 3. A circular block 5 is located at the other end of the stud 4, and a lower pressure plate 6 is fitted onto the outer wall of the circular block 5. The other end of the lower pressure plate 6 is connected to the right-angle plate via a side rod 7. The strip groove of plate 3 fits into the groove. The rotation of stud 4 allows the round block 5 to rotate within it, while the lower pressure plate 6 remains stable. Due to the characteristics of the thread, it is pushed downwards to fit into the support plate 8. The thread causes stud 4 to move downwards, thereby driving the lower pressure plate 6 to fit into the support plate 8. Then, the sample is placed between them. Further fine adjustment is made according to the length of the sample. Then, the power of hydraulic cylinder 13 is turned on, and hydraulic cylinder 13 pushes right-angle plate 3 to move. The bottom insert plate 2 slides in the inner cavity of the slide seat 1, so that the sample is in a straight line in the horizontal direction. Then, calipers are used to accurately measure and complete the measurement of the fractured sample.

[0022] like Figure 1 As shown, brackets 12 are fixedly connected to both ends of the slide seat 1. A hydraulic cylinder 13 is fixedly connected to the side wall of the bracket 12. The piston rod of the other end of the hydraulic cylinder 13 is fixedly connected to the side wall of the right-angle plate 3. A support block 14 is fixedly connected to the center of the outer wall of the hydraulic cylinder 13. The lower surface of the support block 14 is fixedly connected to the center of the upper surface of the bracket 12. One end of the hydraulic cylinder 13 is fixed to the side wall of the bracket 12 and reinforced by the support block 14 at the center. The piston rod of the hydraulic cylinder 13 is connected to the right-angle plate 3 to add movement functionality. Figure 1 The maximum and minimum values ​​of the contraction and pushing of the hydraulic cylinders 13 on both sides are shown.

[0023] like Figure 1 , Figure 2 , Figure 6 As shown, there are two slide seats 1, which are symmetrically arranged. Side blocks 17 are fixedly connected side by side on the side walls of the slide seats 1. A round hole is opened at the center of the upper surface of the side block 17. An inner plate 18 is inserted into the inner side of the two side blocks 17 on the same side. Screw holes are opened on both sides of the inner plate 18, and the screw holes of the inner plate 18 correspond to the round holes of the side blocks 17. Screws 19 are inserted into the screw holes of the inner plate 18 and the round holes of the side blocks 17. The side wall of the screw 19 is threaded to the screw hole of the inner plate 18. The number of slide seats 1 can be increased according to the width of the sample. By setting side blocks 17 on both sides, and the side blocks 17 also have round holes, the inner plates 18 are inserted into the inside and then fixed by screws 19, making the slide seats 1 on both sides more stable.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the side wall of the insert plate 2 has four grooves, which are arranged symmetrically side by side. A rotating wheel 21 is inserted into the groove of the insert plate 2. A rotating shaft 20 is rotatably connected to the center of the rotating wheel 21. The two ends of the rotating shaft 20 are rotatably connected to the inner cavity of the insert plate 2. The outer side of the rotating shaft 20 fits against the inner cavity of the slide seat 1. The rotating wheel 21 is connected to the inner cavity of the insert plate 2 through the rotating shaft 20. The rotating wheel 21 can fit against the inner cavity of the slide seat 1, making its movement smoother when the hydraulic cylinder 13 pushes it.

[0025] like Figure 1 As shown, there are four brackets 12, which are fixedly connected to both ends of the slide seat 1. There are also four hydraulic cylinders 13. The side wall ports of the hydraulic cylinders 13 are connected to pipelines 15. The other ends of the two pipelines 15 on the same side are connected to a manifold valve 16. By connecting the manifold valve 16 through the pipelines 15, the hydraulic cylinders 13 on the same side can work synchronously, avoiding the phenomenon of different movement frequencies, which would affect the clamping process.

[0026] like Figure 1 , Figure 3 , Figure 4 As shown, a round hole gasket 10 is glued to the upper surface of the support plate 8. The center of the round hole gasket 10 is in clearance fit with the side wall of the electromagnet 9. A square gasket 11 is glued to the lower surface of the pressure plate 6. The use of the round hole gasket 10 and the square gasket 11 increases the friction and makes the surface softer, reducing wear during sample clamping.

[0027] Working principle: After the physical, chemical and mechanical properties of the metal material are completed, when selecting a fractured sample for measurement, the slide seat 1 and the insert plate 2 are first assembled. The inner cavity of the slide seat 1 is provided with a groove, and the corners of the insert plate 2 can be fitted into the inner cavity of the slide seat 1 for sliding. The insert plates 2 are symmetrically arranged. The insert plates 2 are moved according to the sample length. Then, the stud 4 is rotated at the top of the right angle plate 3. The stud 4 is moved downward through the thread, thereby driving the lower pressure plate 6 to fit with the support plate 8. Then, the sample is placed between them. Further fine adjustment is made according to the sample length. Then, the power of the hydraulic cylinder 13 is turned on. The hydraulic cylinder 13 pushes the right angle plate 3 to move. The bottom insert plate 2 slides in the inner cavity of the slide seat 1, so that the sample is in a straight line in the horizontal direction. Then, calipers are used to accurately measure, and the measurement of the fractured sample is completed.

[0028] 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. An adjustable sample measuring fixture, characterized in that: The system includes a sliding base (1), the inner cavity of which has a sliding groove. Insert plates (2) are symmetrically inserted into the sliding groove of the inner cavity of the sliding base (1) with a clearance fit. Right-angle plates (3) are fixedly connected to the upper surfaces of the two insert plates (2) near their inner sides, and the two right-angle plates (3) face each other. A support plate (8) is fixedly connected to the inner sidewalls of the two right-angle plates (3) near their bottom. An electromagnet (9) is installed at the center of the upper surface of the support plate (8). A round hole is formed in the sidewall of the support plate (8). The right-angle plate (3) has a strip-shaped through groove on its side wall, and the strip-shaped through groove is vertical. The upper surface of the right-angle plate (3) is threaded with a stud (4). The bottom of the stud (4) is fixedly connected with a round block (5). The outer wall of the round block (5) is fitted with a lower pressure plate (6) and is rotatably connected. The lower pressure plate (6) is located at the top of the support plate (8). The side wall of the lower pressure plate (6) is fixedly connected with a side rod (7). The outer wall of the side rod (7) is fitted with the strip-shaped through groove of the right-angle plate (3) and is clearance-fitted. The two ends of the slide seat (1) are fixedly connected to the bracket (12), the side wall of the bracket (12) is fixedly connected to the hydraulic cylinder (13), the piston rod of the other end of the hydraulic cylinder (13) is fixedly connected to the side wall of the right angle plate (3), the center of the outer wall of the hydraulic cylinder (13) is fixedly connected to the support block (14), and the lower surface of the support block (14) is fixedly connected to the center of the upper surface of the bracket (12).

2. The adjustable sample measuring fixture according to claim 1, characterized in that: The number of the slide seat (1) is two and they are arranged symmetrically. Side blocks (17) are fixedly connected side by side blocks (17) on the side wall of the slide seat (1). A round hole is opened at the center of the upper surface of the side block (17). An inner plate (18) is inserted into the inner side of the two side blocks (17) on the same side. Screw holes are opened on both sides of the inner plate (18), and the screw holes of the inner plate (18) correspond to the round holes of the side blocks (17). Screws (19) are inserted into the screw holes of the inner plate (18) and the round holes of the side blocks (17), and the side wall of the screw (19) is threaded to the screw hole of the inner plate (18).

3. The adjustable sample measurement fixture of claim 1, wherein: The side wall of the insert plate (2) is provided with a groove. The insert plate (2) has four grooves, which are arranged symmetrically side by side. A rotating wheel (21) is inserted into the groove of the insert plate (2). A rotating shaft (20) is rotatably connected to the center of the rotating wheel (21). The two ends of the rotating shaft (20) are rotatably connected to the inner cavity of the insert plate (2). The outer side of the rotating shaft (20) is in contact with the inner cavity of the slide seat (1).

4. The adjustable sample measurement fixture of claim 2, wherein: There are four brackets (12), which are fixedly connected to both ends of the slide seat (1). There are also four hydraulic cylinders (13). The side wall ports of the hydraulic cylinders (13) are connected to pipelines (15), and the other ends of the two pipelines (15) on the same side are connected to a manifold valve (16).

5. An adjustable sample measuring fixture according to claim 1, characterized in that: The upper surface of the support plate (8) is glued with a round hole gasket (10), the center of the round hole gasket (10) is clearance-fitted with the side wall of the electromagnet (9), and the lower surface of the pressure plate (6) is glued with a square gasket (11).

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