Dental bur strength testing device
By designing a dental needle strength test device, the problem of lack of detection methods in the prior art is solved, and a scientific evaluation of dental needles is achieved to ensure its safety and stability during use.
Patent Information
- Application Number
- CN202422242103.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The prior art lacks a test device specifically used to detect the strength of dental needles, which makes it impossible for the needle to effectively detect its maximum deformation and concentricity parameters before leaving the factory, affecting its safe use.
A dental needle strength testing device is designed, including a support, a force tester, a vertical drive mechanism, a deformation measuring device and a needle clamping structure. The constant force is applied by the force tester, and the deformation measuring device measures the deformation of the needle to determine whether its compressive strength is qualified.
An objective and scientific method is provided to evaluate the compressive strength of dental trolley needles to ensure their safety and stability during use, and to avoid patient harm caused by deformation or concentricity problems.
Smart Images
Figure CN223078069U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a strength testing device, in particular to a strength testing device for dental burs. Background Art
[0002] Dental burs are one of the important accessories of dental drills and are composed of a needle head and a shank. Dental burs are mainly used for cutting and grinding teeth. When working, the rotational speed of dental burs can reach up to 450,000 revolutions per minute. Tiny dimensional deviations will result in large concentricity deviations, which are directly related to the personal safety and treatment effect of patients. Therefore, the detection of dental burs is very important to ensure their safe use.
[0003] Currently, the main dental burs sold on the market are high-speed dental burs. The working part and the shank of the overall tungsten carbide and diamond abrasive dental burs are made of overall tungsten carbide. The burs have no weld seams. During processing or clinical use, it is necessary to ensure that the burs do not fall off the head, have no deformation, have extremely high concentricity, no swing, smooth rotation, do not damage the handpiece, and the patient has no sense of vibration. Therefore, before the burs leave the factory, they need to be detected. It is necessary to apply a certain force to the burs along the radial direction of the burs, and then detect parameters such as the maximum deformation amount or concentricity of the burs to determine whether the burs are qualified. However, there is a lack of a testing device specifically for detecting the strength of dental burs in the prior art. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the above-mentioned existing problems and provide a strength testing device for dental burs, which can perform strength testing on dental burs and provide an objective and scientific basis for the production of burs.
[0005] The purpose of the utility model is achieved by the following technical solutions:
[0006] A strength testing device for dental burs includes a support, a force tester arranged on the support for detecting the compressive force, a vertical driving mechanism for driving the force tester to move vertically, a deformation measuring device for measuring the deformation amount of the burs, a measuring installation structure for installing the deformation measuring device, and a burs clamping structure for clamping the burs.
[0007] The working principle of the above-mentioned strength testing device for dental burs is as follows:
[0008] During operation, the bur is installed on the clamping structure so that the end of the bur is exposed; adjust the position of the deformation measuring device so that its measuring end gently touches above the end of the bur; set the test force on the force tester, and drive the force tester close to the bur through the vertical driving mechanism; when the acting end of the force tester abuts against the lower part of the end of the bur, as the vertical driving mechanism continues to drive, the acting end of the force tester will cause the end of the bur to bend upwards until the force received by the force tester is equal to the set test force; at the same time, measure the maximum deformation of the bur through the deformation measuring device, so as to judge whether the compressive strength of the bur meets the requirements according to the deformation amount.
[0009] A preferred embodiment of the present utility model, wherein the force tester is an electronic force gauge, and the electronic force gauge includes a main body and a test head, and the test head faces upwards vertically.
[0010] A preferred embodiment of the present utility model, wherein the vertical driving mechanism is a manual rocker driving mechanism.
[0011] A preferred embodiment of the present utility model, wherein the deformation measuring device is a micrometer, and the axis of the probe of the micrometer is perpendicular to the axis of the bur.
[0012] A preferred embodiment of the present utility model, wherein the bur clamping structure includes a clamping arm, a clamping block and a first locking screw. One end of the clamping arm is fixedly connected to the support, and the other end of the clamping arm is fixedly connected to the clamping block; the clamping block is provided with a clamping hole and a first locking hole; in the test state, one end of the bur to be tested is inserted into the clamping hole, and the first locking screw passes through the first locking hole and abuts against the bur to be tested.
[0013] Further, the measurement and installation structure includes a measurement and installation block, which is fixedly arranged on the clamping block. The measurement and installation block is provided with an installation hole and a second locking hole; one end of the deformation measuring device is located in the clamping hole, and the second locking screw passes through the second locking hole and abuts against the deformation measuring device.
[0014] A preferred embodiment of the present utility model, wherein the angle between the axis of the bur in the clamped state and the horizontal plane is 22.5°.
[0015] The present utility model has the following beneficial effects compared with the prior art:
[0016] By setting a force tester and a deformation measuring device, the present utility model uses the force tester to abut against the bur with a constant test force, and uses the deformation measuring device to measure the deformation amount of the bur, so as to judge whether the compressive strength of the bur meets the requirements according to the deformation amount, providing an objective and scientific basis for the production of the bur. Description of the Drawings
[0017] Figure 1 Schematic perspective view of the dental bur strength testing device of the present utility model.
[0018] Figure 2 Schematic perspective view of the dental bur strength testing device of the present utility model.
[0019] Figure 3 is Figure 1 an enlarged view of X in
[0020] Figure 4 Side view of the dental bur, test head and probe of the present utility model. Detailed implementation manners
[0021] In order to enable those skilled in the art to well understand the technical solution of the present utility model, the present utility model will be further described below in conjunction with embodiments and drawings, but the implementation manners of the present utility model are not limited thereto.
[0022] See Figures 1-4 , the dental bur strength testing device of this embodiment includes a support 1 and a force tester 2 provided on the support 1 for detecting the compressive force, a vertical driving mechanism 3 for driving the force tester 2 to move vertically, a deformation measurer 4 for measuring the deformation amount of the dental bur 5, a measurement installation structure for installing the deformation measurer 4, and a dental bur clamping structure for clamping the dental bur 5.
[0023] See Figures 1-4 , the force tester 2 is an electronic dynamometer, and the electronic dynamometer includes a body and a test head 2-1, and the test head 2-1 faces upward vertically.
[0024] See Figures 1-4 , the vertical driving mechanism 3 is a manual rocker driving mechanism, and the specific structure can refer to the prior art.
[0025] See Figures 1-4 , the deformation measurer 4 is a micrometer, and the axis of the probe 4-1 of the micrometer is perpendicular to the axis of the dental bur 5.
[0026] See Figures 1-4 , the dental bur clamping structure includes a clamping arm 6, a clamping block 7 and a first locking screw. One end of the clamping arm 6 is fixedly connected to the support 1, and the other end of the clamping arm 6 is fixedly connected to the clamping block 7; the clamping block 7 is provided with a clamping hole and a first locking hole; in the test state, one end of the dental bur 5 to be tested is inserted into the clamping hole, and the first locking screw passes through the first locking hole and abuts against the dental bur 5 to be tested.
[0027] Further, the measurement and installation structure includes a measurement and installation block 8, which is fixedly arranged on the clamping block 7. The measurement and installation block 8 is provided with an installation hole and a second locking hole; one end of the deformation measuring device 4 is located in the clamping hole, and the second locking screw passes through the second locking hole and abuts against the deformation measuring device 4.
[0028] See Figure 4 , the included angle between the axis of the dental bur 5 in the clamped state and the horizontal plane is 22.5°.
[0029] The working principle of the above dental bur strength testing device is as follows:
[0030] During operation, the dental bur 5 is installed on the clamping structure so that the end of the dental bur 5 is exposed; the position of the deformation measuring device 4 is adjusted so that its measuring end gently touches above the end of the dental bur 5; the test force is set on the force tester 2, and the force tester 2 is driven to approach the dental bur 5 through the vertical driving mechanism 3; when the acting end of the force tester 2 abuts against the lower part of the end of the dental bur 5, as the vertical driving mechanism 3 continues to drive, the acting end of the force tester 2 will cause the end of the dental bur 5 to bend upward until the force received by the force tester 2 is equal to the set test force; at the same time, the maximum deformation amount of the dental bur 5 is measured by the deformation measuring device 4, so as to judge whether the compressive strength of the dental bur 5 meets the requirements according to the deformation amount.
[0031] The above is the preferred embodiment of the present invention, but the embodiments of the present invention are not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.
Claims
1. A dental bur strength testing device, characterized in that, It includes a support, a force tester arranged on the support for detecting the compressive force, a vertical driving mechanism for driving the force tester to move vertically, a deformation measuring device for measuring the deformation of the bur, a measuring and mounting structure for mounting the deformation measuring device, and a bur clamping structure for clamping the bur.
2. The dental bur strength testing device according to claim 1, wherein The force tester is an electronic dynamometer, which includes a main body and a test head, and the test head faces vertically upward.
3. The dental bur strength testing device according to claim 1, characterized in that, The vertical driving mechanism is a manual rocker driving mechanism.
4. The dental bur strength testing device according to claim 1, wherein, The deformation measuring device is a micrometer, and the axis of the probe of the micrometer is perpendicular to the axis of the bur.
5. The dental bur strength testing device according to claim 1, characterized in that, The bur clamping structure includes a clamping arm, a clamping block and a first locking screw. One end of the clamping arm is fixedly connected to the support, and the other end of the clamping arm is fixedly connected to the clamping block. The clamping block is provided with a clamping hole and a first locking hole. In the test state, one end of the bur to be tested is inserted into the clamping hole, and the first locking screw passes through the first locking hole and abuts against the bur to be tested.
6. The dental bur strength testing device according to claim 5, characterized in that, The measuring and mounting structure includes a measuring and mounting block, which is fixedly arranged on the clamping block. The measuring and mounting block is provided with a mounting hole and a second locking hole. One end of the deformation measuring device is located in the clamping hole, and the second locking screw passes through the second locking hole and abuts against the deformation measuring device.
7. The dental burr strength testing device according to claim 1, characterized in that, The angle between the axis of the bur in the clamped state and the horizontal plane is 22.5°.