Fatigue test clamp tool
By designing a fatigue testing fixture that includes a base, a limiting stage, and a fixing part, the problem of unstable fixation of dental implant samples on the fixture was solved, the perpendicularity and height consistency of the samples were achieved, the testing error was reduced, and the accuracy and efficiency of the experiment were improved.
Patent Information
- Application Number
- CN202520340316.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing dental implant specimen clamps make it difficult to ensure that the height of the dental implant specimen protruding from the clamp is 3mm and perpendicular to the clamp during the fixation process, resulting in large errors in the test data and affecting the experimental results.
Design a fatigue testing fixture, including a base, a limiting platform, and a fixing part. The limiting platform is detachably connected to the base and has a limiting groove. The fixing part is threadedly connected to the dental implant sample through the limiting groove and a second through hole to ensure that the sample is perpendicular to the base and to control the protrusion height of the sample to 3mm through the limiting groove.
This effectively ensures the perpendicularity and height consistency of dental implant samples on the fixture, reduces testing errors, and improves the accuracy of experimental results and work efficiency.
Smart Images
Figure CN223926143U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a fatigue testing fixture. Background Technology
[0002] Dental implantation technology involves surgically inserting dental implants into the upper or lower jawbone at the site of tooth loss. After the wound heals, a crown is attached to the implant, achieving the goal of implanting a tooth. In recent years, dental implantation technology has gradually been accepted by more patients as a method of restoring teeth after loss. Dental implants, also known as "artificial tooth roots," are often made of titanium alloy, which has good biocompatibility and high mechanical properties. They have a high success rate, long lifespan, and can provide good chewing performance. During use, dental implants are subjected to continuous cyclic biting forces in the oral environment for extended periods, making them prone to fatigue damage. Moreover, long-term accumulation of fatigue damage can lead to sudden fracture of the implant, causing unnecessary distress to the patient. Therefore, fatigue testing of dental implant samples is essential to improve their reliability and durability and ensure long-term safe and effective use.
[0003] According to the current national pharmaceutical industry standard YY / T 0521-2018, "Dynamic Fatigue Testing of Intraosseous Dental Implants," dental implant specimens need to be fixed at a certain angle and distance. Specifically, the dental implant specimen is fixed in a specimen clamp, which should be clamped at a position 3 ± 0.5 mm from the root of the nominal bone plane. In other words, the dental implant specimen should protrude 3 mm from the specimen clamp. In related technologies, the specimen clamp is a cylindrical structure with a central hole. The depth D of the central hole in the specimen clamp is calculated by manually measuring the length of the dental implant specimen and subtracting 3 mm. A hole is drilled in the center of the clamp to depth D. The dental implant specimen is then inserted into the central hole of the clamp, and embedding material is injected to fill the central hole to fix the dental implant specimen for dynamic fatigue testing. When using this method, the depth of the hole drilled in the center of the fixture may be too deep or too shallow. In this case, it is impossible to guarantee that the height of the dental implant sample protruding from the base is 3mm, which easily leads to multiple reworks and reduces work efficiency. Moreover, since the size of the center hole needs to be larger than the diameter of the dental implant sample in order to facilitate the filling of the embedding material, the dental implant sample may be inserted at an angle in the hole. After the embedding material solidifies, the dental implant sample will not be perpendicular to the fixture. When conducting fatigue tests, the test data is prone to errors, affecting the experimental results. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a fatigue testing fixture that ensures the dental implant sample protrudes from the sample holder at a preset height and that the dental implant sample is perpendicular to the sample holder.
[0005] This utility model discloses a fatigue testing fixture, comprising: a base, a limiting platform, and a fixing part. The limiting platform is detachably connected to the base, and the fixing part is movably connected to the limiting platform. A limiting groove is provided on one side of the limiting platform facing the base. One end of the dental implant sample is connected to the fixing part and abuts against the bottom surface of the limiting groove. A first opening is provided on the base, and the other end of the implant sample is placed in the first opening.
[0006] The limiting platform includes: a mounting ring, a connecting part, and a limiting block. The limiting block is connected to one side of the mounting ring through the connecting part. A first groove is provided on the first side of the limiting block, and the limiting groove is provided on the second side of the limiting block. The first side and the second side are opposite to each other. A second through hole communicating with the limiting groove is provided at the bottom of the first groove. The fixing part is movably inserted into the second through hole, and the position of the second through hole corresponds to the first opening.
[0007] Specifically, the fixing part includes a limiting section and a connecting section connected together. The size of the limiting section is larger than the diameter of the second through hole, and the size of the connecting section is smaller than the diameter of the second through hole. When the fixing part is inserted into the second through hole, the limiting section is placed in the first groove, the connecting section is placed in the limiting groove, and one end of the dental implant sample is connected to the connecting section.
[0008] Specifically, a second mounting hole is provided on the end face of the limiting segment away from the connecting segment.
[0009] The shape of the mounting ring is adapted to the shape of the base, and the inner dimension of the mounting ring is adapted to the outer dimension of the base.
[0010] Preferably, the base is a cylindrical base.
[0011] Wherein, the depth of the limiting groove is defined as D2, the depth of the first opening is defined as D1, and the length of the dental implant sample is L, satisfying the relationship D1≥L-D2.
[0012] Preferably, the first opening is located at the center of the end face of the base.
[0013] Preferably, the bottom of the first opening is tapered.
[0014] Wherein, the inner diameter of the first opening is larger than the cross-sectional diameter of the dental implant sample, and after assembly, there is a gap between the dental implant sample and the inner wall of the first opening.
[0015] The present invention discloses a fatigue testing fixture, comprising: a base, a limiting platform, and a fixing part. The limiting platform is detachably connected to the base, and the fixing part is movably connected to the limiting platform. A limiting groove is provided on one side of the limiting platform facing the base. One end of the dental implant sample is connected to the fixing part and abuts against the bottom surface of the limiting groove. A first opening is provided on the base, and the other end of the implant sample is placed in the first opening. In this technology, a second through hole is provided in the limiting stage. The fixing part is inserted into the second through hole, and the dental implant sample is threaded to one side of the fixing part. By pre-setting the depth of the limiting groove to 3mm, the height of the dental implant sample protruding from the base is limited by the limiting groove. When the limiting stage is installed on the base, the lower side of the limiting stage abuts against the upper end face of the base. The dental implant sample is placed in the opening, which can effectively ensure that the height of the dental implant sample protruding from the base is consistent with the depth of the limiting groove (3mm) and ensure that the dental implant sample is perpendicular to the base. Then, the embedding material is filled in. After the embedding material solidifies, the fixing part and the limiting stage are removed, and the base is installed in a fatigue testing machine for fatigue testing. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any innovative effort.
[0017] Figure 1 This is an overall structural diagram of the fixture disclosed in the embodiments of this utility model;
[0018] Figure 2 This is a cross-sectional view of the fixture disclosed in the embodiment of this utility model;
[0019] Figure 3 This is a schematic diagram of the connection structure between the limiting platform and the fixing part disclosed in the embodiment of this utility model.
[0020] Figure 4 This is a cross-sectional view of the limiting platform and fixing part disclosed in the embodiment of this utility model;
[0021] Figure label:
[0022] 1. Base; 11. First opening; 111. Conical bottom; 2. Limiting platform; 22. Mounting ring; 23. Limiting block; 231. First side surface; 2311. First groove; 2312. Second through hole; 232. Second side surface; 2321. Limiting groove; 24. Connecting part; 241. First stepped surface; 3. Fixing part; 32. Limiting section; 321. Second mounting hole; 31. Connecting section; 311. First thread; 4. Dental implant sample; Detailed Implementation
[0023] 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, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0025] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0026] It should also be further understood that the terms "and" and "or" as used in this specification and the appended claims refer to any combination of one or more of the associated listed items and all possible combinations, and include such combinations.
[0027] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
[0028] The fatigue testing fixture disclosed in this utility model, such as Figure 1-2As shown, it includes: a base 1, a limiting platform 2, and a fixing part 3. The limiting platform 2 is detachably connected to the base 1, and the fixing part 3 is movably connected to the limiting platform 2. The fixing part 3 is used to fix the dental implant sample 4. In this embodiment, the fixing part 3 can move up and down along the limiting platform 2. The base 1 is provided with a first opening 11 for accommodating the dental implant sample 4. A limiting groove 2321 is provided on the side of the limiting platform 2 facing the base 1. The dental implant sample 4 protruding from the base 1 is placed in the limiting groove 2321 and abuts against the bottom surface of the limiting groove 2321. The limiting groove 2321 is used to limit the height of the dental implant sample 4 protruding from the base 1 so that the height of the dental implant sample 4 protruding from the base 1 is consistent with the depth of the limiting groove 2321.
[0029] Please refer to Figure 3-4 The limiting platform 2 includes: a mounting ring 22, a connecting part 24, and a limiting block 23. The limiting block 23 is connected to one side of the mounting ring 22, and the mounting ring 22 and the limiting block 23 are connected through the connecting part 24. In this embodiment, the limiting block 23 is a cuboid cube. The connecting part 24 is connected to both sides of the limiting block 23, and a first stepped surface 241 is formed between the connecting part 24 and the limiting block 23. A first groove 2311 is formed on the first side 231 of the limiting block 23, and the limiting groove 2321 is formed on the second side 232 of the limiting block 23. The first side 231 and the limiting block 23 are connected to the first side 232 of the limiting block 23. The second side 232 is arranged opposite to each other. The bottom of the first groove 2311 is provided with a second through hole 2312 that communicates with the limiting groove 2321. When the mounting ring is installed on the outer side of the end of the base 1, the first step surface 241 abuts against the edge of the end of the base 1, and the end face of the base 1 abuts against the second side 232 of the limiting block 23. The fixing part 3 is inserted into the second through hole 2312. The position of the second through hole 2312 corresponds to the first opening 11, so that when the limiting stage 2 is installed on the base 1, the dental implant sample 4 and the fixing part 3 can be inserted into the first opening 11.
[0030] The fixing part 3 includes a limiting section 32 and a connecting section 31 connected together. The size of the limiting section 32 is larger than the diameter of the second through hole 2312, and the size of the connecting section 31 is smaller than the diameter of the second through hole 2312, so that when the fixing part 3 is inserted into the second through hole 2312, the connecting section 31 can pass through the second through hole 2312 while the limiting section 32 cannot pass through. The limiting section 32 and the connecting section 31 are respectively placed on both sides of the second through hole 2312, that is, the limiting section 32 is placed in the first groove 2311, and the connecting section 31 is placed in the limiting groove 2321; the outer wall of the connecting section 31 is provided with a first thread 311. The dental implant sample 4 is provided with a first mounting hole. The inner wall of the first mounting hole is provided with a second thread that is adapted to the first thread 311. The connecting section 31 can be screwed into the first mounting hole and threadedly connected to the dental implant sample 4. The side of the limiting section 32 away from the connecting section 31 is also provided with a second mounting hole 321 adapted to the installation tool. In this embodiment, the second mounting hole 321 is a hexagonal screw hole. During installation, the installation tool is inserted into the second mounting hole 321 and rotated, which drives the fixing part 3 to rotate and tightly install the fixing part 3 with the dental implant sample 4. Alternatively, the fixing part 3 can be disassembled from the dental implant sample 4.
[0031] The shape of the mounting ring 22 is adapted to the shape of the base 1, and the inner size of the mounting ring 22 is adapted to the outer size of the base 1. When the mounting ring 22 is sleeved on the outer side of the end of the base 1, the second side 232 of the limiting block 23 abuts against the end face of the base 1. In this embodiment, the mounting ring 22 is directly sleeved on the outer side of the end of the base 1. The connection between the mounting ring 22 and the outer side of the end of the base 1 is not threaded. In this way, the mounting ring 22 can be effectively sleeved vertically on the outer side of the base 1, thereby ensuring that the dental implant sample 4 is vertically placed in the first opening 11.
[0032] The base 1 is a cylindrical base. The end of the base 1 away from the limiting stage 2 can be mounted on the arc-shaped fixed platform of the fatigue testing machine to cooperate with the fatigue testing machine for fatigue testing.
[0033] The depth of the limiting groove 2321 is defined as D2. The depth of the limiting groove 2321 is set according to the test requirements. For example, in this embodiment, the test requirement is that the dental implant sample 4 protrudes 3mm from the base, so the depth of the limiting groove 2321 is set to 3mm. The depth of the first opening 11 is defined as D1, and the length of the dental implant sample 4 is L, satisfying the relationship D1≥L-D2, so that the dental implant sample 4 can be completely inserted into the first opening 11.
[0034] The first opening 11 is located at the center of the end face of the base 1 to ensure that the dental implant sample 4 is fixed at the center of the base and that the distance between the dental implant sample 4 and the edge of the base 1 is the same, so as to reduce the experimental error in the fatigue test process.
[0035] The bottom of the first opening 11 is a conical bottom 111, which can be adapted to the end of the dental implant sample 4.
[0036] The inner diameter of the first opening 11 is larger than the cross-sectional diameter of the dental implant sample 4, so that the dental implant sample 4 can be inserted into the first opening 11. After assembly, there is a gap between the dental implant sample 4 and the inner wall of the first opening 11, which facilitates the filling of the embedding material.
[0037] In a specific embodiment, please refer to Figure 1 The fatigue testing fixture is used in the fatigue testing of dental implants. The depth of the limiting groove 2321 is set to 3mm. Before the test, the connecting section 31 of the fixing part 3 is inserted from the first groove 2311 until the connecting section 31 protrudes from the second through hole 2312. The connecting section 31 is screwed into the second mounting hole 321 using an installation tool, and then screwed into the first mounting hole of the dental implant sample 4 until the dental implant sample 4 abuts against the bottom surface of the limiting groove 2321. The limiting platform 2 is then installed on the base 1, and the mounting ring 22 is sleeved on the outer side of the end of the base 1. The first step surface 241 abuts against the edge of the end of the base 1, and the second side surface 232 of the limiting platform 2 abuts against the end face of the base 1. At this point, the dental implant sample 4 is inserted into the first opening 11. After adjusting the positions of each component, embedding material is filled into the gap between the dental implant sample 4 and the first opening 11. In this embodiment, the embedding material is a resin composite material, which is made by mixing denture base resin (liquid) and dental resin (powder) in a ratio of 1ml:2g. The resin composite material can solidify from a liquid state to a solid state to fix dental implant samples 3 of different sizes. After the resin composite material solidifies, the installation tool is screwed into the second installation hole 321 to disassemble the fixing part 3 from the dental implant sample 4. Then, the limiting stage 2 is removed, and the base is installed in the fatigue testing machine for fatigue testing. The fixture used in this embodiment can ensure that the height of the dental implant sample 4 protruding from the base 1 is 3mm, which meets the requirements of dental implant fatigue testing and effectively reduces testing errors.
[0038] The present invention discloses a fatigue testing fixture, comprising: a base, a limiting platform, and a fixing part. The limiting platform is detachably connected to the base, and the fixing part is movably connected to the limiting platform. A limiting groove is provided on one side of the limiting platform facing the base. One end of the dental implant sample is connected to the fixing part and abuts against the bottom surface of the limiting groove. A first opening is provided on the base, and the other end of the implant sample is placed in the first opening. In this technology, a second through hole is provided on the limiting platform, the fixing part is inserted into the second through hole, and the dental implant sample is threaded to one side of the fixing part. The depth of the limiting groove is set to 3mm in advance. The height of the dental implant sample protruding from the base is limited by the limiting groove. When the limiting platform is installed on the base, the lower side of the limiting platform abuts against the upper end face of the base. The dental implant sample is placed in the opening, which can effectively ensure that the height of the dental implant sample protruding from the base is 3mm and that the dental implant sample is perpendicular to the base. Then, the embedding material is filled in. After the embedding material solidifies, the fixing part and the dental implant sample are disassembled from the second mounting hole. The limiting platform is removed, and the base is installed in a fatigue testing machine for fatigue testing.
[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent modifications or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A fatigue testing fixture, characterized in that, include: The device includes a base, a limiting platform, and a fixing part. The limiting platform is detachably connected to the base, and the fixing part is movably connected to the limiting platform. A limiting groove is provided on the side of the limiting platform facing the base, and one end of the dental implant sample is connected to the fixing part and abuts against the bottom surface of the limiting groove. The base has a first opening, and the other end of the implant sample is placed in the first opening.
2. The fatigue testing fixture according to claim 1, characterized in that, The limiting platform includes: a mounting ring, a connecting part, and a limiting block. The limiting block is connected to one side of the mounting ring through the connecting part. A first groove is provided on the first side of the limiting block, and the limiting groove is provided on the second side of the limiting block. The first side and the second side are opposite to each other. A second through hole communicating with the limiting groove is provided at the bottom of the first groove. The fixing part is movably inserted into the second through hole, and the position of the second through hole corresponds to the first opening.
3. The fatigue testing fixture according to claim 2, characterized in that, The fixing part includes a limiting section and a connecting section connected together. The size of the limiting section is larger than the diameter of the second through hole, and the size of the connecting section is smaller than the diameter of the second through hole. When the fixing part is inserted into the second through hole, the limiting section is placed in the first groove, the connecting section is placed in the limiting groove, and one end of the dental implant sample is connected to the connecting section.
4. The fatigue testing fixture according to claim 3, characterized in that, The end face of the limiting section away from the connecting section is provided with a second mounting hole.
5. The fatigue testing fixture according to claim 2, characterized in that, The shape of the mounting ring is adapted to the shape of the base, and the inner dimension of the mounting ring is adapted to the outer dimension of the base.
6. The fatigue testing fixture according to claim 5, characterized in that, The base is a cylindrical base.
7. The fatigue testing fixture according to claim 2, characterized in that, The depth of the limiting groove is defined as D2, the depth of the first opening is defined as D1, and the length of the dental implant sample is L, satisfying the relationship D1≥L-D2.
8. The fatigue testing fixture according to claim 1, characterized in that, The first opening is located at the center of the end face of the base.
9. The fatigue testing fixture according to claim 8, characterized in that, The bottom of the first opening is tapered.
10. The fatigue testing fixture according to claim 8, characterized in that, The inner diameter of the first opening is larger than the cross-sectional diameter of the dental implant sample. After assembly, there is a gap between the dental implant sample and the inner wall of the first opening.