Sample measuring tool for metal tensile test
By designing a measuring tool that includes a base platform and a multi-function fixture, the problem of large measurement errors in sample size and time-consuming marking in metal tensile tests is solved, and efficient, accurate and low-cost measurement of sample measurement is achieved.
Patent Information
- Application Number
- CN202422273822.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-18
AI Technical Summary
In existing metal tensile tests, the measurement errors of the sample size and measurement errors are large, which affects the accuracy of the test results. The existing marking methods are time-consuming, labor-intensive or costly, and may damage the sample.
Design a measuring tool including a base platform and multi-function fixture, realize direct marking of the sample gauge distance through fixed magnets and standard samples, use adjustable fixtures to ensure the axial level of the sample, and use vernier calipers for accurate measurement.
It improves the accuracy and working efficiency of sample measurement, reduces the testing cost, ensures the comprehensiveness and accuracy of the measurement data, and makes operation more convenient.
Smart Images
Figure CN223179926U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of measurement tooling, and particularly relates to a sample measurement tooling for metal tensile tests. Background Art
[0002] As a key link in the test of material mechanical properties, the metal tensile test plays an important role in the fields of industrial manufacturing and material research and development. However, when performing a tensile test, some common problems may have a huge impact on the accuracy of the test results. For example, incorrect measurement of the sample size or excessive measurement error will directly affect the accuracy of the final test results.
[0003] Before conducting a metal tensile test, the following preparations need to be made for the sample:
[0004] 1. Marking the original gauge length of the sample to be tested. Existing methods for marking the original gauge length of the sample to be tested include hand-drawing marks with a caliper, scribing method, and punching method. a. Hand-drawing marks with a caliper: Only one tensile sample can be marked at a time, which is time-consuming, inefficient, and there is also a risk of human measurement error. b. Scribing method: Multiple equally spaced lines are directly scribed on the sample through a laser marking machine to form a gauge length with multiple grid marks. The cost of such a device is high and the laser is prone to failure, affecting the test progress. c. Punching method: Multiple equally spaced small punch marks are made on the sample through a tensile test gauge to form a gauge length with multiple equally spaced small punch marks. However, when punching through the tensile test gauge, it is easy to have a deep punching depth and damage the metal surface, thus accelerating the fracture of the tensile sample and causing inaccurate test data.
[0005] 2. Measuring methods for the diameter of round bar stock. a. Directly hold the round bar stock by hand and use a vernier caliper to measure the upper cross-sectional diameter, middle cross-sectional diameter, and lower cross-sectional diameter of the standard round bar stock. After rotating the round bar stock by 90°, measure the upper cross-sectional diameter, middle cross-sectional diameter, and lower cross-sectional diameter again. b. Place the round bar stock in a V-groove and use a vernier caliper to measure the upper cross-sectional diameter, middle cross-sectional diameter, and lower cross-sectional diameter of the round bar stock. After rotating the round bar stock by 90°, measure the upper cross-sectional diameter, middle cross-sectional diameter, and lower cross-sectional diameter again. However, whether measuring the diameter by holding the round bar stock by hand or placing the round bar stock in a V-groove, the axial inclination of the round bar stock will be increased due to improper holding or placement, thus increasing the measurement error. Moreover, the V-groove blocks the vernier caliper, and there may be a risk of incomplete diameter data testing or inaccurate measurement data. Summary of the Utility Model
[0006] The purpose of the present utility model is to solve the above problems, and to provide a specimen measurement tooling for metal tensile tests. This measurement tooling can meet the requirements of different specifications of specimens to be tested and / or different specifications of round bar materials, improve the accuracy and working efficiency of the test results of specimens to be tested and / or round bar materials, and reduce the test cost.
[0007] To achieve the above purpose, the present utility model provides a specimen measurement tooling for metal tensile tests, including a base platform. A specimen original gauge length measurement fixture is arranged on the base platform. The specimen original gauge length measurement fixture includes support bases arranged on the transverse two sides of the base platform. The support bases are provided with downwardly concave installation cavities. The opposite sides of the two installation cavities are provided with openings. Fixed magnets are arranged in the installation cavities. The end of a standard template is connected to the installation cavity where the fixed magnet is arranged. Multiple fixed numerical gauge lengths are arranged on the upper surface of the standard template.
[0008] As a further optimization, long through holes are arranged at the positions of the base platform relative to the support bases. The support bases are slidably connected to the base platform through bolts passing through the long through holes.
[0009] As a further optimization, the shape and size of the installation cavity are similar to the end of the standard template.
[0010] As a further optimization, a specimen diameter measurement fixture is also arranged on the base platform. The specimen diameter measurement fixture includes L-shaped support bases arranged on the transverse two sides of the base platform. Mounting holes are arranged on the vertical surfaces of the L-shaped support bases. Set screws are arranged on the L-shaped support bases through the mounting holes.
[0011] As a further optimization, long through holes are arranged at the positions of the base platform relative to the L-shaped support bases. The L-shaped support bases are slidably connected to the base platform 1 through bolts passing through the long through holes.
[0012] Advantages and beneficial effects of the present utility model
[0013] 1. The present utility model has two functional areas in total. The original gauge length of the specimen to be tested can be marked and measured through the specimen original gauge length measurement fixture. The round bar specimen can be fixed through the specimen diameter measurement fixture, and the diameters of the upper, middle and lower cross-sections are measured with a vernier caliper. The two measurement fixtures can be used separately or in combination.
[0014] 2. In the present utility model, the support bases in the specimen original gauge length measurement fixture and the L-shaped support bases in the specimen diameter measurement fixture are slidably connected to the base platform through bolts. Therefore, the distance between the two support bases on both sides and / or the two L-shaped support bases on both sides can be adjusted according to the size of the specimen to ensure the fixation and clamping of different specimen specifications.
[0015] 3. The original gauge length measuring fixture for specimens in the present utility model includes two supporting bases and fixed magnets arranged in the installation cavities of the two supporting bases. When marking the original gauge length of the specimen to be tested, the two ends of the specimen to be tested need to be placed on the fixed magnets, and then the standard template is placed on the specimen to be tested. Since their shapes and sizes are the same, after they overlap, the original gauge length can be directly drawn on the specimen to be tested with a fine marker or scratched with a blade using the fixed numerical gauge length on the standard template, and the length of the original mark can be known without measuring with a vernier caliper. There is no need for a tensile test gauge length instrument or a laser marking machine to punch or mark the specimen to be tested, which reduces the test cost, improves the accuracy of test data and work efficiency, and makes the operation more convenient and fast.
[0016] 4. The specimen diameter measuring fixture in the present utility model includes two L-shaped supporting bases. Set screws are provided on the vertical surfaces of the two L-shaped supporting bases on both sides. The two ends of the circular bar specimen are provided with tapered holes that cooperate with the set screws. The specimen diameter measuring fixture presses the circular bar specimen between the two L-shaped supporting bases on both sides through the set screws on both sides. Since the end of the set screw is in close fit with the tapered hole at the end of the circular bar specimen, it can ensure that the axial direction of the circular bar specimen is in a horizontal state and there is enough space between it and the base platform for the caliper to measure the dimensions of any position of the circular bar specimen. At the same time, by adjusting the set screws, the circular bar specimen can be rotated by 90°. Therefore, whether before or after rotation, the axial direction of the circular bar specimen always remains in a horizontal state, which improves the accuracy of the test data measured by the vernier caliper, does not block the vernier caliper, makes the test data more comprehensive, and the operation is more convenient. Description of the Drawings
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.
[0018] Figure 1 is a schematic diagram of the original gauge length measuring fixture for specimens provided by the present utility model;
[0019] Figure 2 is a schematic diagram of the original gauge length measuring fixture for specimens and the specimen diameter measuring fixture provided by the present utility model;
[0020] Figure 3 is the present utility model Figure 2 a schematic diagram from another angle.
[0021] Reference numerals: base platform 1, original gauge measurement fixture for specimen 2, support base 21, fixing magnet 22, standard template 23, fixed numerical gauge 231, specimen diameter measurement fixture 3, L-shaped support base 31, setscrew 32, round bar specimen 4, and specimen to be tested 5. Detailed implementation manners
[0022] The following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. It should be noted that in the description of the present utility model, the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0023] As Figure 1 shown, a specimen measurement tooling for metal tensile test includes a base platform 1, and a specimen original gauge measurement fixture 2 is arranged on the base platform 1. The specimen original gauge measurement fixture 2 is used for marking and measuring the original gauge of the specimen to be tested, and includes two support bases 21. The base platform 1 is provided with long through holes at positions corresponding to the two support bases 21. The two support bases 21 are connected to the base platform 1 by bolts passing through the long through holes. Connecting the support base 21 to the base platform 1 by bolts has two advantages. First, the support base 21 can be slidably connected to the base platform 1 along the long through hole by bolts, and the distance between the two support bases 21 on both sides can be adjusted according to the length of the specimen to be tested. Second, the support base 21 is detachably connected to the base platform 1, and a support base 21 with a shape similar to the end of the specimen to be tested can be selected according to the size of the end of the specimen to be tested. The top of the support base 21 is provided with a downwardly concave installation cavity, and the shape and size of the installation cavity are similar to the end of the standard template 23, which can better fix and restrain the specimen to be tested and the standard template 23. The opposite sides of the two installation cavities are provided with openings, and fixing magnets 22 are arranged in the installation cavities. The fixing magnets 22 and the installation cavities jointly restrain the specimen to be tested to prevent the specimen to be tested from moving during the line drawing process.
[0024] When determining the original gauge length of the test specimen, the test specimen to be tested can be placed on the support base 21 provided with the fixed magnet 22. The support base 21 and the fixed magnet 22 play a role of double constraint on the test specimen to be tested. Then, the standard template 23 is placed on the test specimen to be tested. Since the shapes and sizes of the test specimen to be tested and the standard template 23 are the same, they can coincide after being stacked. The original gauge length can be directly drawn on the test specimen to be tested with a fine marker or scratched with a blade using the fixed numerical gauge length 231 on the standard template 23. Since the values of multiple intervals on the fixed numerical gauge length 231 are fixed, the length of the original gauge length can be known by checking the number of intervals, without the need to measure with a vernier caliper, improving the accuracy and working efficiency of the test data, reducing the test cost, and making the operation more convenient and fast.
[0025] As Figure 2 and Figure 3 shown, a specimen diameter measuring fixture 3 is further provided on the base platform 1. The specimen diameter measuring fixture 3 is used to measure the diameters of the upper, middle, and lower cross-sections of the circular bar specimen 4, and includes two L-shaped support bases 31. The base platform 1 is provided with long through holes at positions corresponding to the two L-shaped support bases 31. The two L-shaped support bases 31 are connected to the base platform 1 by bolts passing through the long through holes. The L-shaped support bases 31 are slidably connected to the base platform 1 along the long through holes by bolts. Mounting holes are provided on the vertical surfaces of the L-shaped support bases 31, and the set screws 32 are arranged on the L-shaped support bases 31 through the mounting holes. The two set screws 32 on both sides play a role of fixing and clamping the circular bar specimen 4.
[0026] When testing the diameter of the circular bar specimen 4, the distance between the two L-shaped support bases 31 on both sides can be adjusted according to the size of the circular bar specimen 4. Since the left and right ends of the circular bar specimen 4 are provided with tapered holes that fit tightly with the set screws 32, the circular bar specimen 4 can be fixed and clamped by the set screws 32 on both sides, and it is ensured that the axial direction of the circular bar specimen 4 is in a horizontal state. Then, a vernier caliper is used to measure the diameters of the upper cross-section, middle cross-section, and lower cross-section of the circular bar specimen 4. After the measurement, the circular bar specimen 4 can be rotated by 90° by adjusting the set screws 32, and then the diameters of the upper cross-section, middle cross-section, and lower cross-section of the rotated circular bar specimen 4 are measured using a vernier caliper. After the measurement, the measured values are input into the test software, and the required test performance parameter results can be calculated through the test software.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the solutions of the embodiments of the present invention.
Claims
1. A specimen measuring tooling for metal tensile test, characterized in that: It includes a base platform (1), on which a specimen original gauge length measuring fixture (2) is provided. The specimen original gauge length measuring fixture (2) includes support bases (21) arranged on the transverse two sides of the base platform (1). The support bases (21) are provided with downwardly concave mounting cavities. The opposite sides of the two mounting cavities are provided with openings. Fixed magnets (22) are arranged in the mounting cavities. The end of a standard template (23) is connected to the mounting cavity where the fixed magnet (22) is arranged. Multiple fixed numerical gauge lengths (231) are provided on the upper surface of the standard template (23).
2. The sample measuring tooling for metal tensile test according to claim 1, wherein: The base platform (1) is provided with long through holes at positions opposite to the support bases (21). The support bases (21) are slidably connected to the base platform (1) through bolts passing through the long through holes.
3. The sample measuring tooling for metal tensile test according to claim 1, wherein: The shape and size of the mounting cavity are similar to the end of the standard template (23).
4. The sample measuring tooling for metal tensile test according to claim 1, characterized in that: A specimen diameter measuring fixture (3) is further provided on the base platform (1). The specimen diameter measuring fixture (3) includes L-shaped support bases (31) arranged on the transverse two sides of the base platform (1). Mounting holes are provided on the vertical surfaces of the L-shaped support bases (31). Set screws (32) are arranged on the L-shaped support bases (31) through the mounting holes.
5. The sample measuring tooling for metal tensile test according to claim 4, characterized in that: The base platform (1) is provided with long through holes at positions opposite to the L-shaped support bases (31). The L-shaped support bases (31) are slidably connected to the base platform (1) through bolts passing through the long through holes.