Tooling for testing samples

Abstract

The utility model discloses a tool for testing samples, belonging to the technical field of testing tools. The tool for testing samples is used to load samples to be tested, the sample is a first cylinder and a second cylinder coaxially fixedly connected, the diameter of the first cylinder is larger than the diameter of the second cylinder, the sample is provided with a center hole penetrating the first cylinder and the second cylinder, the end face of the first cylinder away from the second cylinder has a cylindrical groove coaxial with the center hole, the tool comprises: a bushing, a lower loading rod group and an upper loading rod, the bushing has a central axis, and one end has a retaining ring extending along the inner wall of the bushing toward the central axis of the bushing. In the test process of the provided tool for testing samples, the moment the sample joint surface breaks is located inside the bushing, which avoids the possibility of metal debris splashing outside the bushing, reduces the risk of test operation, and achieves safe production. The entire experimental process is simple to operate and the risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of testing tooling, in particular to a tooling for testing samples. Background Art

[0002] Babbitt alloy (including tin-based bearing alloy) is the most well-known bearing material with anti-friction properties. Because of its white color, it is also called white alloy, and its application can be traced back to the Industrial Revolution. Tin-based babbitt alloy with anti-friction properties is a material suitable for rotation relative to low-hardness shafts. Compared with other bearing materials, tin-based babbitt alloy has better adaptability and press-fit properties, and is widely used in large marine diesel engines, turbines, AC generators, and other mining machinery and large rotating machinery.

[0003] However, when the tin-based bearing alloy is used as a bearing material, the tin-based bearing alloy and the stainless steel material are usually combined, wherein the stainless steel material is made into a first cylinder, the tin-based bearing alloy is made into a second cylinder, and the first cylinder and the second cylinder are coaxially fixedly connected and used as a test sample, such as Figure 2 , there is a central hole penetrating along the axis direction of the sample, the connecting surface of the first cylinder and the second cylinder is the bonding surface, and the diameter of the first cylinder is greater than the diameter of the second cylinder. Since it is necessary to ensure that the bonding surface reaches a certain bonding strength during the use of the sample, testing the bonding strength between the tin-based bearing alloy and steel is an important part of ensuring the performance of the sample.

[0004] The existing method for detecting the bonding strength of tin-based bearing alloy and steel is: connecting the first cylinder and the second cylinder at the two action ends of the testing machine respectively, controlling the two action ends of the testing machine to move away from each other, recording the value of the tensile force, realizing the bonding strength of the detection combination, and then judging the maximum bonding strength of the tin-based bearing alloy and the steel according to the instantaneous value of the breaking.

[0005] During the use of the above detection method, when the tin-based bearing alloy and the steel are pulled apart, metal debris splashes, which can easily cause harm to the detection personnel and is highly dangerous. Utility Model Content

[0006] The purpose of the utility model is to overcome the problems in the prior art and to provide a tooling for testing a sample. During the test process, the sample joint surface is located inside the bushing at the moment of fracture, thereby avoiding the possibility of metal debris splashing outside the bushing, reducing the risk of test operation, achieving safe production, and making the entire experimental process simple to operate and reducing the risk.

[0007] The utility model provides a tool for testing samples, which is used to load the samples to be tested. The sample is a first cylinder and a second cylinder coaxially fixedly connected, the diameter of the first cylinder is larger than the diameter of the second cylinder, a center hole penetrating the first cylinder and the second cylinder is provided on the sample, and the end surface of the first cylinder away from the second cylinder has a cylindrical groove coaxial with the center hole. The tool comprises: a bushing, a lower loading rod group and an upper loading rod, the bushing has a central axis, one end has a retaining ring extending along the inner wall of the bushing toward the central axis of the bushing, and the center line of the retaining ring coincides with the center line of the bushing. The inner diameter of the retaining ring is larger than the outer diameter of the second cylinder and smaller than the outer diameter of the first cylinder. The first cylinder of the specimen is limited in the bushing, and the second cylinder is located in the retaining ring; the lower loading rod group includes a limit piece and a lower loading rod, the lower loading rod passes through the center hole, and one end of the lower loading rod is connected to the limit piece, the limit piece is located inside the cylindrical groove, and the other end is connected to an action end of the testing machine; one end of the upper loading rod is detachably connected to the bushing, and the other end is connected to the other action end of the testing machine, so that when the two action ends of the testing machine are away from each other, the specimen is subjected to tension.

[0008] The inner diameter of the retaining ring is 20mm, the thickness of the retaining ring is 5mm, and the inner diameter of the bushing is 40mm. The bushing is used to transmit upward force to the sample, and the lower loading rod group is used to transmit downward force to the sample. When the two action ends of the control test machine are moved away from each other, it is used to break the sample. According to the size of the loading force when the test machine breaks the sample, it is judged whether the bonding strength of the sample joint surface is qualified. Due to the limitation of the retaining ring on the second cylinder, the position of the sample in the bushing will not be offset, ensuring the stability of the test and the accuracy of the data.

[0009] Preferably, the upper loading rod is threadedly connected to the bushing, the end of the upper loading rod is specifically a first external thread, and the inner wall of the end of the bushing away from the retaining ring is provided with an internal thread, and the internal thread cooperates with the first external thread.

[0010] As an example, the first external thread is an M40 external thread, and the size of the internal thread is M40.

[0011] Preferably, the limiting member is a nut, the end of the lower loading rod has a second external thread, and the nut is threadably connected to the second screw rod.

[0012] The lower loading rod cooperates with the nut so that the nut as a limiter can transmit the downward loading force to the sample. As an example, the second external thread is an M10 external thread, and the nut has an M10 internal thread. The nut can prevent the lower loading rod from slipping off the sample.

[0013] Preferably, a first connecting column is fixedly provided on the end of the lower loading rod away from the bushing, and the diameter of the first connecting column is larger than the diameter of the lower loading rod.

[0014] The purpose is to enable the lower loading rod to be better clamped on the action end of the testing machine through the setting of the first connecting column, and the action end of the testing machine can clamp the upper surface of the first connecting column to pull the first connecting column downward.

[0015] Preferably, a second connecting column is fixedly provided on the end of the upper loading rod away from the bushing, and the diameter of the second connecting column is larger than the diameter of the upper loading rod.

[0016] The purpose is to enable the upper loading rod to be better clamped on the action end of the testing machine through the setting of the second connecting column, and the action end of the testing machine can clamp the lower surface of the second connecting column to pull the second connecting column upward.

[0017] Preferably, the limiting member is any one of a rod, a plate and a nut.

[0018] The rod body, the plate body and the nut are all used to be connected with the lower loading rod, and the end of the lower loading rod is limited in the cylindrical groove.

[0019] Preferably, a threaded column is coaxially fixed on the end of the upper loading rod, the diameter of the threaded column is larger than the diameter of the upper loading rod, the first external thread is the thread on the threaded column, and the first external thread cooperates with the internal thread.

[0020] The threaded column is connected to the bushing, so that the upper loading rod can transmit the upward loading force to the bushing through the threaded column.

[0021] Preferably, the diameter of the internal thread is larger than the diameter of the first cylinder, so as to facilitate the assembly and disassembly of the sample on the bushing.

[0022] The purpose is to prevent the specimen from being unable to enter and exit the bushing smoothly.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The bushing of the specimen detection tooling of the utility model is used to accommodate the specimen, and can also be connected to the action end of the testing machine during stretching. The bushing transmits an upward force to the specimen, and the lower loading rod group is used to transmit a downward force to the specimen. When the two action ends of the testing machine are controlled to move away from each other, the specimen is pulled apart. According to the size of the loading force when the testing machine pulls apart the specimen, it is judged whether the bonding strength of the specimen bonding surface is qualified.

[0025] The position of the sample in the bushing will not shift, ensuring the stability of the test and the accuracy of the data. During the test, the sample joint surface is located inside the bushing at the moment of fracture, avoiding the possibility of metal debris splashing out of the bushing, reducing the risk of test operation, and achieving safe production. The entire experimental process is simple to operate and the risk is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the assembly drawing of the utility model;

[0027] Figure 2 It is a schematic diagram of a sample in the prior art;

[0028] Figure 3 is a schematic diagram of the upper loading rod;

[0029] Figure 4 Schematic diagram of the lower loading rod group.

[0030] Description of reference numerals:

[0031] 1. Bushing, 2. Retaining ring, 3. Test specimen, 4. Lower loading rod assembly, 5. Limiting member, 6. Lower loading rod, 7. Upper loading rod, 8. Cylindrical groove, 9. First connecting column, 10. Second connecting column, 31. Center hole. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the utility model belongs. The words "first", "second" and similar words used in the patent application specification and claims of the utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] The drawings in this disclosure are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only schematic diagrams of the structures.

[0035] The utility model provides a tool for testing samples, which is used to load the sample 3 to be tested. The sample 3 is a first cylinder and a second cylinder coaxially fixedly connected. The diameter of the first cylinder is larger than the diameter of the second cylinder. The sample 3 is provided with a center hole 31 penetrating the first cylinder and the second cylinder. The end surface of the first cylinder away from the second cylinder has a cylindrical groove 8 coaxial with the center hole 31. The tool is as follows Figure 1-Figure 4 It also includes: a bushing 1, a lower loading rod group 4 and an upper loading rod 7; the bushing 1 has a central axis, and one end has a retaining ring 2 formed along the inner wall of the bushing 1 and extending toward the central axis of the bushing 1, the center line of the retaining ring 2 coincides with the center line of the bushing 1, the inner diameter of the retaining ring 2 is larger than the outer diameter of the second cylinder, and smaller than the outer diameter of the first cylinder, the first cylinder of the sample 3 is limited in the bushing 1, and the second cylinder is located in the retaining ring 2; the lower loading rod group 4 includes a limit member 5 and a lower loading rod 6, the lower loading rod 6 passes through the center hole 31, and one end of the lower loading rod 6 is connected to the limit member 5, the limit member 5 is located inside the cylindrical groove 8, and the other end is connected to an action end of the testing machine; one end of the upper loading rod 7 is detachably connected to the bushing 1, and the other end is connected to the other action end of the testing machine, so that when the two action ends of the testing machine are away from each other, the sample 3 is subjected to tension.

[0036] The inner diameter of retaining ring 2 is 20mm, the thickness of retaining ring 2 is 5mm, the inner diameter of bushing 1 is 40mm, bushing 1 is used to transmit upward force to sample 3, and lower loading rod group 4 is used to transmit downward force to sample 3. When the two action ends of the control test machine are moved away from each other, it is used to break sample 3. According to the magnitude of the loading force when the test machine breaks sample 3, it is judged whether the bonding strength of the bonding surface of sample 3 is qualified. Due to the limitation of the second cylinder by retaining ring 2, the position of sample 3 in bushing 1 will not be offset, ensuring the stability of the test and the accuracy of the data; during the test, the moment when the bonding surface of sample 3 breaks is located in bushing 1, avoiding the possibility of metal debris splashing outside bushing 1, reducing the risk of test operation, achieving safe production, and the whole experimental process is simple to operate and the risk is reduced.

[0037] In this embodiment, a detachable connection implementation is provided, such as Figure 1 and Figure 3 The upper loading rod 7 is threadedly connected to the bushing 1, and the end of the upper loading rod 7 is specifically a first external thread. The inner wall of the end of the bushing 1 away from the retaining ring 2 is provided with an internal thread, and the internal thread cooperates with the first external thread.

[0038] As an example, the first external thread is an M40 external thread, and the internal thread is an M40 internal thread.

[0039] In this embodiment, Figure 4 The limiting member 5 is a nut, the end of the lower loading rod 6 has a second external thread, and the nut is threadedly connected to the second screw rod.

[0040] The lower loading rod 6 cooperates with the nut so that the nut serving as the limiter 5 can transmit the downward loading force to the sample 3. As an example, the second external thread is an M10 external thread, and the nut has an M10 internal thread. The nut can prevent the lower loading rod 6 from slipping off the sample 3.

[0041] In this embodiment, Figure 1 A first connecting column 9 is fixedly provided on the end of the lower loading rod 6 away from the bushing 1 , and the diameter of the first connecting column 9 is greater than the diameter of the lower loading rod 6 .

[0042] The purpose is to enable the lower loading rod 6 to be better clamped on the action end of the testing machine through the setting of the first connecting column 9, and the action end of the testing machine can clamp the upper surface of the first connecting column 9 to pull the first connecting column 9 downward.

[0043] In this embodiment, Figure 1 and Figure 3 A second connecting column 10 is fixedly provided on the end of the upper loading rod 7 away from the bushing 1 , and the diameter of the second connecting column 10 is greater than the diameter of the upper loading rod 7 .

[0044] The purpose is to enable the upper loading rod 7 to be better clamped on the action end of the testing machine through the setting of the second connecting column 10, and the action end of the testing machine can clamp the lower surface of the second connecting column 10 to pull the second connecting column 10 upward.

[0045] In this embodiment, the limiting member 5 is any one of a rod, a plate and a nut.

[0046] The rod body, the plate body and the nut are all used to be connected to the lower loading rod 6 , and to limit the end of the lower loading rod 6 in the cylindrical groove 8 .

[0047] In this embodiment, Figure 1 and Figure 3 A threaded column is coaxially fixed on the end of the upper loading rod 7 , and the diameter of the threaded column is larger than the diameter of the upper loading rod 7 . The first external thread is the thread on the threaded column, and the first external thread matches the internal thread.

[0048] The threaded column is connected to the bushing 1, so that the upper loading rod 7 can transmit the upward loading force to the bushing 1 through the threaded column.

[0049] In this embodiment, Figure 1 The diameter of the internal thread is greater than the diameter of the first cylinder, which facilitates the disassembly and assembly of the sample 3 on the bushing 1.

[0050] The minor diameter of the internal thread is larger than the diameter of the first cylinder, so as to prevent the sample 3 from being unable to smoothly enter and exit the bushing 1 .

[0051] The method of using the tooling for testing samples of the utility model is as follows:

[0052] First, the second external thread of the lower loading rod 6 is passed through the central hole 31, and the threaded end of the lower loading rod 6 is matched with the nut, and the nut is located in the cylindrical groove 8 on the specimen 3;

[0053] Next, the sample 3 and the lower loading rod 6 are placed into the bushing 1 at the same time, so that the joint surface of the sample 3 abuts against the end surface of the retaining ring 2;

[0054] Then, the first external thread of the upper loading rod 7 is matched with the internal thread in the bushing 1 to fix and load the sample 3;

[0055] Finally, the first connecting column 9 and the second connecting column 10 are respectively connected to the two action ends of the testing machine, the testing machine is started for stretching, the loading force when the sample 3 is broken is recorded, and it is determined whether the performance of the sample 3 is qualified.

[0056] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A tool for testing a sample, the tool being used to load a sample (3) to be tested, the sample (3) being a first cylinder and a second cylinder coaxially fixedly connected, the diameter of the first cylinder being larger than the diameter of the second cylinder, the sample (3) being provided with a center hole (31) penetrating the first cylinder and the second cylinder, the end surface of the first cylinder away from the second cylinder being provided with a cylindrical groove (8) coaxial with the center hole (31), characterized in that: The tooling includes: A bushing (1) having a central axis, and one end thereof having a retaining ring (2) extending along the inner wall of the bushing (1) toward the central axis of the bushing (1), wherein the center line of the retaining ring (2) coincides with the center line of the bushing (1), the inner diameter of the retaining ring (2) is greater than the outer diameter of the second cylinder and smaller than the outer diameter of the first cylinder, the first cylinder of the sample (3) is located within the bushing (1), and the second cylinder is located within the retaining ring (2); A lower loading rod assembly (4) comprises a limiter (5) and a lower loading rod (6), wherein the lower loading rod (6) passes through the central hole (31), and one end of the lower loading rod (6) is connected to the limiter (5), the limiter (5) is located inside the cylindrical groove (8), and the other end of the lower loading rod (6) is connected to an action end of the testing machine; The upper loading rod (7) has one end detachably connected to the bushing (1) and the other end connected to another action end of the testing machine, so that when the two action ends of the testing machine move away from each other, the sample (3) is subjected to tension.

2. The tooling for testing samples according to claim 1, characterized in that: The upper loading rod (7) is threadedly connected to the bushing (1), the end of the upper loading rod (7) is specifically provided with a first external thread, and the inner wall of the end of the bushing (1) away from the retaining ring (2) is provided with an internal thread, and the internal thread cooperates with the first external thread.

3. The tooling for testing samples according to claim 1, characterized in that: The limiting member (5) is a nut, the end of the lower loading rod (6) has a second external thread, and the nut is threadably connected to the second screw rod.

4. The tooling for testing samples according to claim 1, characterized in that: A first connecting column (9) is fixedly provided on the end of the lower loading rod (6) away from the bushing (1), and the diameter of the first connecting column (9) is greater than the diameter of the lower loading rod (6).

5. The tooling for testing samples according to claim 1, characterized in that: A second connecting column (10) is fixedly provided on the end of the upper loading rod (7) away from the bushing (1), and the diameter of the second connecting column (10) is greater than the diameter of the upper loading rod (7).

6. The tooling for testing samples according to claim 1, characterized in that: The limiting member (5) is any one of a rod body, a plate body and a nut.

7. The tooling for testing samples according to claim 2, characterized in that: A threaded column is coaxially fixed on the end of the upper loading rod (7), the diameter of the threaded column is larger than the diameter of the upper loading rod (7), the first external thread is a thread on the threaded column, and the first external thread matches the internal thread.

8. The tooling for testing samples according to claim 2, characterized in that: The diameter of the internal thread is greater than the diameter of the first cylinder, which facilitates the disassembly and assembly of the sample (3) on the bushing (1).

Images