Orthodontic arch wire friction corrosion testing device and testing method

Abstract

The present invention discloses an orthodontic archwire friction corrosion testing device and testing method. The device includes: an electrochemical corrosion testing assembly for placing an archwire and containing artificial saliva, immersing the archwire in the artificial saliva, and performing electrochemical testing on the archwire in the artificial saliva to output a corresponding corrosion test signal; a friction and wear testing assembly, corresponding to the electrochemical corrosion testing assembly, for fixing brackets and performing friction testing on the brackets and archwire to output a corresponding friction test signal; and a data acquisition and calculation assembly, wherein the acquisition end of the data acquisition and calculation assembly is connected to the output end of the friction and wear testing assembly and the output end of the electrochemical corrosion testing assembly, respectively, and the data acquisition and calculation assembly is used to collect friction test signals and corrosion test signals and calculate the friction parameters and corrosion parameters of the archwire. The present invention aims to enable the testing device to complete simultaneous testing of the friction, wear and corrosion properties of the archwire in an artificial saliva environment.

Description

Technical Field

[0001] The present invention relates to the field of oral orthodontic correction, and in particular to an orthodontic correction arch wire friction corrosion testing device and a testing method. Background Art

[0002] Malocclusion is a common clinical phenomenon that leads to unbalanced oral bite force. With the continuous development of orthodontic technology, orthodontic appliances are still the main means of orthodontic treatment. Orthodontic appliances are composed of arch wires and brackets. The correction force generated by the relative movement between the arch wire and the bracket causes the teeth to move, thereby achieving the purpose of correcting malocclusion. Since the arch wire and bracket are in the human oral environment for a long time, friction wear and electrochemical corrosion are inevitable during orthodontic treatment. When friction wear and electrochemical corrosion occur at the same time, the oxide film or coating on the surface of the arch wire and bracket may be damaged and fall off due to mechanical wear, resulting in a sudden change in the performance of the material. The synergistic effect between friction wear and electrochemical corrosion will accelerate the loss of material, forming a vicious circle. Therefore, it is necessary to test the friction performance and corrosion resistance of the arch wire and bracket.

[0003] The existing technology has the following deficiencies: In the current tests for the friction and wear performance and corrosion resistance of arch wire brackets, due to the relatively complex test formats and methods, friction and wear experimental devices and electrochemical testing mechanisms are often used to simulate the human oral environment to test the friction and corrosion resistance of the arch wire. However, due to the synergistic effect between the friction and wear and corrosion of the arch wire brackets, it is difficult to simultaneously perform friction and wear and dynamic corrosion tests, thereby failing to truly simulate the friction and corrosion performance of the arch wire brackets in the human oral environment, resulting in inaccurate measurements by existing testing equipment. Summary of the Invention

[0004] The main purpose of the present invention is to provide an orthodontic arch wire friction corrosion testing device and testing method, aiming to enable the testing device to complete the simultaneous testing of the friction, wear and corrosion performance of the arch wire in an artificial saliva environment.

[0005] To achieve the above objectives, the present invention provides an orthodontic archwire friction corrosion testing device comprising:

[0006] An electrochemical corrosion testing assembly is used to place an archwire and contain artificial saliva, and to immerse the archwire in the artificial saliva. The electrochemical corrosion testing assembly is used to perform an electrochemical test on the archwire in the artificial saliva to output a corresponding corrosion test signal;

[0007] A friction and wear test assembly, corresponding to the electrochemical corrosion test assembly, is used to fix the bracket and perform a friction test on the bracket and the archwire to output a corresponding friction test signal;

[0008] A data acquisition and calculation component, wherein the acquisition end of the data acquisition and calculation component is respectively connected to the output end of the friction and wear test component and the output end of the electrochemical corrosion test component, and the data acquisition and calculation component is used to collect the friction test signal and the corrosion test signal, and calculate the friction parameters and corrosion parameters of the arch wire.

[0009] Optionally, the friction and wear testing assembly comprises:

[0010] A fixed pre-tightening mechanism, arranged corresponding to the electrochemical corrosion test assembly, for fixing the arch wire, applying a preset pre-tightening force to the arch wire, and controlling the rotation angle of the arch wire and the bracket;

[0011] A friction testing mechanism is provided corresponding to the electrochemical corrosion testing assembly. The friction testing mechanism is used to apply a preset load to the arch wire and the bracket, and to fix the bracket to perform a reciprocating friction test on the arch wire, and output a corresponding friction test signal.

[0012] Optionally, the fixed pre-tightening mechanism includes:

[0013] An archwire pressing block is provided corresponding to the position where the electrochemical corrosion test assembly is placed on the archwire and is used to fix the archwire;

[0014] A positioning bolt, used to fix the archwire pressing block to the electrochemical corrosion test assembly;

[0015] A preloaded triaxial displacement platform, mechanically connected to the arch wire, for applying a preset preload force to the arch wire;

[0016] The rotating platform is mechanically connected to the arch wire and is used to control the rotation angle of the arch wire and the bracket.

[0017] Optionally, the friction testing mechanism includes:

[0018] A bracket fixing fixture is used to fix the bracket so that the bracket is arranged correspondingly to the archwire;

[0019] A cantilever beam, wherein a groove is formed on the cantilever beam, and the bracket fixing fixture is fixedly installed in the groove of the cantilever beam;

[0020] a force sensor, disposed on the cantilever beam, for detecting the friction force between the bracket and the archwire and outputting a corresponding friction test signal;

[0021] A friction triaxial displacement platform is fixedly connected to the cantilever beam, and the friction triaxial displacement platform is used to apply a preset load to the archwire and the bracket;

[0022] A reciprocating motion platform, used to carry the friction three-axis displacement platform;

[0023] The first motor is connected to the reciprocating motion platform, and is used to receive a first driving signal and drive the reciprocating motion platform to perform reciprocating motion according to the first driving signal.

[0024] Optionally, the electrochemical corrosion testing assembly includes:

[0025] An electrolytic cell, wherein the electrolytic cell is provided with an archwire groove for placing an archwire, and the electrolytic cell is formed with a receiving cavity for receiving artificial saliva;

[0026] An adjusting electrode positioning and fixing mechanism is provided corresponding to the electrolytic cell, and is used to adjust the spacing and height of the electrodes in the artificial saliva to output corresponding electrode signals;

[0027] An electrochemical testing mechanism, wherein the input end of the electrochemical testing mechanism is respectively connected to the arch wire and the output end of the adjusting electrode positioning and fixing mechanism, and the electrochemical testing mechanism performs an electrochemical test on the arch wire according to the electrode signal and outputs a corresponding corrosion test signal to the data acquisition and calculation component.

[0028] Optionally, the orthodontic archwire friction corrosion testing device further comprises a platform, the electrochemical corrosion testing component and the friction wear testing component are respectively arranged on the platform, and the adjusting electrode positioning and fixing mechanism comprises:

[0029] Reference electrode;

[0030] counter electrode;

[0031] An electrode sealing ring, used for fixing the reference electrode and the counter electrode;

[0032] A fixture, used for fixing the electrode sealing ring;

[0033] The module lead screw is fixed on the platform;

[0034] a linear slider, slidably disposed on the module lead screw and connected to the fixture;

[0035] The second motor is connected to the linear slider, and is used to receive a second drive control signal and drive the linear slider to slide according to the second drive control signal, so as to drive the reference electrode and the counter electrode to move.

[0036] Optionally, the data acquisition and calculation component includes:

[0037] A bridge box, the input end of which is connected to the output end of the friction and wear test assembly, and the bridge box is used to collect the friction test signal output by the friction and wear test assembly;

[0038] A stress amplifier, the input end of the stress amplifier is connected to the output end of the bridge box, and the stress amplifier is used to amplify the friction test signal and output a corresponding electrical signal;

[0039] A friction force data collector, wherein the input end of the friction force data collector is connected to the output end of the stress amplifier, and the friction force data collector is used to receive an electrical signal corresponding to the friction force, and output a friction force signal after processing;

[0040] A load data collector, wherein the input end of the load data collector is connected to the output end of the stress amplifier, and the load data collector is used to receive an electrical signal corresponding to the load, and output a load signal after processing;

[0041] A computer, wherein the input end of the computer is respectively connected to the output end of the electrochemical corrosion test assembly, the output end of the friction force data collector, and the output end of the load data collector, and the computer is used to calculate the corrosion parameters of the arch wire according to the corrosion test signal, and calculate the friction parameters of the arch wire according to the friction force signal and the load signal.

[0042] Optionally, it also includes:

[0043] A temperature control component is provided in the electrochemical corrosion test component, and is used to control the temperature of the artificial saliva in the electrochemical corrosion test component.

[0044] Optionally, the temperature control component includes:

[0045] semiconductor wafers;

[0046] A semiconductor temperature control system connected to the semiconductor chip, the semiconductor temperature control system is used to control the semiconductor to heat or cool;

[0047] A cooling plate, the cooling plate being arranged in contact with the semiconductor chip, having a water inlet at one end and a water outlet at the other end, and being used to cool the semiconductor chip during refrigeration;

[0048] A temperature sensor is arranged on the cooling plate, and the output end of the temperature sensor is connected to the input end of the semiconductor temperature control system. The temperature sensor is used to detect the temperature of the artificial saliva in the electrochemical corrosion test assembly and output a corresponding temperature detection signal to the semiconductor temperature control system.

[0049] The present invention also provides an orthodontic arch wire friction corrosion testing method based on the above-mentioned orthodontic arch wire friction corrosion testing device, comprising the following steps:

[0050] The arch wire is fixedly placed on the electrochemical corrosion test component, and artificial saliva is poured into the electrochemical corrosion test component;

[0051] Controlling the friction and wear test component to perform friction and wear tests on brackets and arch wires while controlling the electrochemical corrosion test component to perform electrochemical corrosion tests on arch wires in artificial saliva;

[0052] The friction test signal output by the friction and wear test component is calculated to obtain the friction parameter of the arch wire, and the corrosion test signal output by the electrochemical corrosion test component is calculated to obtain the corrosion parameter of the arch wire.

[0053] The technical solution of the present invention is to form an orthodontic arch wire friction corrosion test device by an electrochemical corrosion test component, a friction and wear test component and a data acquisition and calculation component, wherein the electrochemical corrosion test component is used to place the arch wire and accommodate artificial saliva, so that the arch wire is immersed in the artificial saliva, thereby simulating the human oral environment; the electrochemical corrosion test component is used to perform electrochemical testing on the arch wire in the artificial saliva to output the corresponding corrosion test signal to the data acquisition and calculation component; the friction and wear test component is set corresponding to the electrochemical corrosion test component, which can fix the bracket and the arch wire, and perform friction testing on the bracket and the arch wire to output the corresponding friction test signal to the data acquisition and calculation component; the data acquisition and calculation component can calculate the friction parameters and corrosion parameters of the arch wire according to the friction test signal and the corrosion test signal. In this way, the orthodontic arch wire friction corrosion test device in this scheme can simulate the artificial saliva environment and simultaneously complete the friction and wear test and corrosion performance test of the arch wire, thereby facilitating the evaluation of the proportion of friction and corrosion in the arch wire failure and exploring the synergistic effect between friction and corrosion of the arch wire in the oral environment during orthodontic treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0055] Figure 1 This is a functional module diagram of an embodiment of an orthodontic archwire friction corrosion testing device of the present invention;

[0056] Figure 2 This is a schematic diagram of the product structure of an embodiment of an orthodontic archwire friction corrosion testing device of the present invention;

[0057] Figure 3Schematic diagram of the structure of an embodiment of a friction and wear testing component in an orthodontic archwire friction corrosion testing device of the present invention;

[0058] Figure 4 This is a schematic structural diagram of another embodiment of a friction and wear testing assembly in an orthodontic archwire friction corrosion testing device of the present invention;

[0059] Figure 5 Schematic diagram of the structure of another embodiment of the friction and wear testing component in the orthodontic archwire friction corrosion testing device of the present invention;

[0060] Figure 6 It is a structural schematic diagram of an embodiment of a bracket fixing fixture in a friction testing mechanism of a friction wear testing assembly in an orthodontic archwire friction corrosion testing device of the present invention;

[0061] Figure 7 Schematic diagram of the structure of an embodiment of an electrochemical corrosion testing component in an orthodontic archwire friction corrosion testing device of the present invention;

[0062] Figure 8 Schematic diagram of the structure of another embodiment of the electrochemical corrosion testing assembly in the orthodontic archwire friction corrosion testing device of the present invention;

[0063] Figure 9 Schematic diagram of the structure of an embodiment of an electrolytic cell in an electrochemical corrosion testing assembly in an orthodontic archwire friction corrosion testing device of the present invention;

[0064] Figure 10 Schematic diagram of the structure of another embodiment of the electrochemical corrosion testing component in the orthodontic archwire friction corrosion testing device of the present invention;

[0065] Figure 11 Schematic diagram of the structure of an embodiment of a data acquisition and calculation component in an orthodontic archwire friction corrosion testing device of the present invention;

[0066] Figure 12 Schematic diagram of the structure of an embodiment of a temperature control component in an orthodontic archwire friction corrosion testing device of the present invention;

[0067] Figure 13 A cross-sectional view of an embodiment of a cooling plate in a temperature control assembly in an orthodontic archwire friction corrosion testing device of the present invention;

[0068] Figure 14 This is a flow chart of the method steps of one embodiment of the orthodontic arch wire friction corrosion testing method of the present invention.

[0069] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0070] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0071] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0072] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0073] Malocclusion is a common clinical phenomenon that not only leads to unbalanced oral occlusal force and seriously affects oral health, but also has adverse effects on the patient's facial aesthetics and psychology. With the continuous development of orthodontic technology, orthodontic appliances are still the main means of orthodontic correction. Oral orthodontic appliances are composed of arch wires and brackets. The correction force generated by the relative movement between the arch wire and the bracket causes the teeth to move, achieving the purpose of correcting malocclusion. Since the arch wire and bracket are in the human oral environment for a long time, friction wear and electrochemical corrosion are inevitable during orthodontic treatment. When friction wear and electrochemical corrosion occur at the same time, the oxide film or coating on the surface of the arch wire and bracket may be damaged and fall off due to mechanical wear, resulting in a sudden change in the performance of the material. The synergistic effect between friction wear and electrochemical corrosion will accelerate the loss of material, forming a vicious circle. Therefore, it is necessary to test the friction performance and corrosion resistance of the arch wire and bracket.

[0074] The existing technology has the following deficiencies: First, in the current tests for the friction and wear performance and corrosion resistance of arch wire brackets, due to the relatively complex test forms and methods, friction and wear experimental devices and electrochemical testing mechanisms are often used to simulate the human oral environment to test the friction and corrosion resistance of the arch wire. However, due to the synergistic effect between the friction and wear and corrosion of the arch wire brackets, it is difficult to simultaneously perform friction and wear and dynamic corrosion tests, thereby failing to truly simulate the friction and corrosion performance of the arch wire brackets in the human oral environment, resulting in inaccurate measurements of the existing testing equipment.

[0075] Secondly, there are two major problems with the current oral orthodontic arch wire friction and wear testing devices: First, before clinical treatment, clinical physicians will apply a certain pre-tightening force to the arch wire when the arch wire and bracket are matched. The existing equipment is unable to accurately simulate the working conditions of the arch wire and bracket at different pre-tightening forces to test the friction corrosion performance of the arch wire; Second, in clinical medicine, a certain rotation angle will inevitably be generated between the square arch wire and the bracket during orthodontic treatment. The existing equipment is unable to accurately simulate the working conditions of the square arch wire and bracket at different rotation angles to test the friction performance of the arch wire.

[0076] Finally, there are two major problems in the current electrochemical testing equipment for orthodontic arch wires: First, during electrochemical testing, the distance between the working electrode, reference electrode, and counter electrode needs to be precisely controlled. During the experiment, it is often necessary to replace the sample multiple times for electrochemical testing. However, in the currently commonly used three-electrode system, the electrode distance is generally controlled by visual inspection, and it is difficult to ensure the stability of the electrode position during multiple tests. The electrode spacing, the depth of insertion into the solution, and the parallelism of the electrodes will greatly affect the experimental results, such as the occurrence of ohmic drop, poor electrolyte uniformity, mutual interference between electrodes, and measurement errors. Therefore, the existing equipment has problems such as the inability to accurately control the fixed position of the electrode and improve the test accuracy; second, the existing three-electrode system has no temperature control system and is often tested at room temperature. There are problems such as the inability to accurately simulate the human oral temperature conditions to test the corrosion resistance of the arch wire.

[0077] In order to solve the above problems, the present invention proposes an orthodontic archwire friction corrosion testing device.

[0078] Reference Figures 1 to 2 In one embodiment, an orthodontic archwire friction corrosion testing device comprises:

[0079] An electrochemical corrosion test assembly 1 is used to place an archwire and contain artificial saliva, and to immerse the archwire in the artificial saliva. The electrochemical corrosion test assembly 1 is used to perform an electrochemical test on the archwire in the artificial saliva to output a corresponding corrosion test signal;

[0080] The friction and wear test component 2 is provided corresponding to the electrochemical corrosion test component 1, and is used to fix the bracket and perform a friction test on the bracket and the archwire to output a corresponding friction test signal;

[0081] The data acquisition and calculation component 3 has an acquisition end connected to the output end of the friction and wear test component 2 and the output end of the electrochemical corrosion test component 1, respectively. The data acquisition and calculation component 3 is used to acquire the friction test signal and the corrosion test signal, and calculate the friction parameters and corrosion parameters of the arch wire.

[0082] In this embodiment, the electrochemical corrosion testing assembly 1 can be composed of an electrochemical testing mechanism 13 and a tank containing artificial saliva. An archwire can be placed in the tank, immersed in the artificial saliva, thereby simulating the conditions of the archwire in the human oral cavity and improving the accuracy of the test results. The electrochemical testing mechanism 13 is used to perform dynamic polarization curve testing and electrochemical impedance testing. After the three electrodes in the artificial saliva are connected to the electrochemical testing mechanism 13 via wires, the electrochemical testing mechanism 13 is turned on, and the archwire is used as the working electrode to perform corrosion testing on the archwire. The working principle of the electrochemical testing workstation is not described in detail here.

[0083] Brackets can be fixedly set on the friction and wear test component 2, so that the friction and wear test component 2 can correspond to the position setting of the electrochemical corrosion test component 1 to match the positions of the brackets and the arch wire, simulating the fit of the brackets and the arch wire in an orthodontic appliance; and the arch wire may become loose when placed on the electrochemical corrosion test component 1, and the friction and wear test component 2 can also be used to fix the arch wire to avoid the loose arch wire affecting the test results. The friction and wear test component 2 can also include a moving part. After the positions of the brackets and the arch wire are matched, the moving part drives the arch wire and the bracket to rub back and forth to complete the friction test; and the friction force can be detected by a sensor and then output.

[0084] The data acquisition and calculation component 3 can be composed of a data acquisition part and a data processing part. The data acquisition part can collect the electrical signal output by the electrochemical corrosion test component 1, that is, the corrosion test signal, and collect the electrical signal output by the friction and wear test component 2, that is, the friction test signal; then the corrosion test signal and the friction test signal are processed and calculated by the data processing part to obtain corresponding corrosion parameters and friction parameters, which represent the corrosion and wear conditions of the arch wire; the data processing part can be composed of a computer 35.

[0085] It can be understood that this scheme immerses the arch wire in artificial saliva, conducts friction and wear tests on the arch wire and bracket through the friction and wear test component 2, and conducts chemical corrosion tests on the arch wire through the electrochemical corrosion test component 1; it can simultaneously perform reciprocating friction and wear and dynamic electrochemical corrosion tests under the condition of truly simulating the human oral environment in vitro, thereby facilitating the evaluation of the proportion of friction and corrosion in arch wire failure, and exploring the synergistic effect between friction and corrosion of the arch wire in the oral environment during orthodontic treatment, which can provide a favorable basis for the research and development of arch wire and bracket materials, oral orthodontic clinical medicine and other related research.

[0086] The technical solution of the present invention is to form an orthodontic arch wire friction corrosion test device by an electrochemical corrosion test component 1, a friction and wear test component 2 and a data acquisition and calculation component 3, wherein the electrochemical corrosion test component 1 can place the arch wire and accommodate artificial saliva, so that the arch wire is immersed in the artificial saliva, thereby simulating the human oral environment; the electrochemical corrosion test component 1 can perform electrochemical testing on the arch wire in the artificial saliva to output the corresponding corrosion test signal to the data acquisition and calculation component 3; the friction and wear test component 2 is arranged corresponding to the electrochemical corrosion test component 1, can fix the bracket and the arch wire, and perform friction testing on the bracket and the arch wire to output the corresponding friction test signal to the data acquisition and calculation component 3; the data acquisition and calculation component 3 can calculate the friction parameters and corrosion parameters of the arch wire according to the friction test signal and the corrosion test signal. In this way, the orthodontic arch wire friction corrosion test device in this scheme can simulate the artificial saliva environment and simultaneously complete the friction and wear test and corrosion performance test of the arch wire, thereby facilitating the evaluation of the proportion of friction and corrosion in the arch wire failure and exploring the synergistic effect between friction and corrosion of the arch wire in the oral environment during orthodontic treatment.

[0087] Reference Figure 2 In one embodiment, the friction and wear testing assembly 2 includes:

[0088] A fixed pre-tightening mechanism 21 is provided corresponding to the electrochemical corrosion test assembly 1, and is used to fix the arch wire, apply a preset pre-tightening force to the arch wire, and control the rotation angle of the arch wire and the bracket;

[0089] The friction testing mechanism 22 is provided corresponding to the electrochemical corrosion testing assembly 1. The friction testing mechanism 22 is used to apply a preset load to the arch wire and the bracket, and to fix the bracket to perform a reciprocating friction test on the arch wire, and output a corresponding friction test signal.

[0090] In this embodiment, the friction and wear test assembly 2 is configured to correspond to the electrochemical corrosion test assembly 1. Therefore, the archwire can be secured to the slot of the electrochemical corrosion test assembly 1 via a fixed preload mechanism 21 within the friction and wear test assembly 2, preventing the archwire from loosening and affecting the test results. Specifically, this can be secured using components such as bolts. It is understood that in this embodiment, the fixed preload mechanism 21 applies a preset preload to the archwire and controls the archwire, simulating the preload applied by clinicians to the archwire when it is fitted with the bracket, as well as the inevitable rotation angle between the square archwire and the bracket during orthodontic treatment, thereby improving the accuracy of the friction and wear test. The friction test mechanism 22 applies a preset load to the archwire and bracket, simulating the friction and corrosion performance of the archwire under different loads during orthodontic treatment. Furthermore, the friction test mechanism 22 can be driven by a motor to cause the bracket to perform low-speed reciprocating friction motion relative to the archwire. Furthermore, different motion speeds, distances, and cycles can be set according to test requirements to simulate different reciprocating motion cycles and test the friction and corrosion performance of the archwire under different reciprocating motion cycles.

[0091] Reference Figures 3 and 4 In one embodiment, the fixed pre-tightening mechanism 21 includes:

[0092] The arch wire pressing block 211 is provided corresponding to the position where the electrochemical corrosion test assembly 1 is placed on the arch wire and is used to fix the arch wire;

[0093] A positioning bolt 212 is used to fix the archwire pressing block 211 to the electrochemical corrosion testing assembly 1;

[0094] A pre-tightening triaxial displacement platform 213 is mechanically connected to the arch wire and is used to apply a preset pre-tightening force to the arch wire;

[0095] The rotating platform 214 is mechanically connected to the arch wire and is used to control the rotation angle of the arch wire and the bracket.

[0096] In this embodiment, since the arch wire is placed on the slot body of the electrochemical corrosion test assembly 1, the arch wire can be pressed and fixed by the arch wire pressing block 211, and the arch wire pressing block 211 is fixed to the slot body by bolts; it is understandable that the number of the arch wire pressing block 211 and the positioning bolt 212 can be set to multiple to enhance the fixing effect, such as Figure 4In the present invention, three archwire clamps 211 and three positioning bolts 212 are provided, one at the connection between the rotating platform 214 and the archwire, and two on the slot of the electrochemical corrosion test assembly 1. The preloaded three-axis displacement platform 213 may include a preloaded X-axis micrometer 2131, a preloaded Y-axis micrometer 2132, and a preloaded Z-axis micrometer 2133. By using the calibrated preloaded three-axis displacement platform 213 and rotating the preloaded Y-axis micrometer 2132, a certain preload force is applied to the archwire according to the test requirements. This can simulate the working condition of clinicians applying different preload forces to the archwire before orthodontic treatment, and test the friction corrosion performance of the archwire under different preload forces. The rotating platform 214 can be composed of a locking screw 2141, a coarse and fine adjustment switching screw 2142, a differential head 2143, a rotating base 2144 and a rotating disk 2145; by rotating the differential head 2143 of the fine-tuning rotating platform 214, a certain rotation angle is formed between the arch wire and the bracket according to the test requirements, and the locking screw 2141 is twisted to fix the rotation angle, thereby simulating the working conditions of different rotation angles of the arch wire and the bracket during orthodontic treatment, and testing the friction corrosion performance of the arch wire at different rotation angles.

[0097] Reference Figures 5 and 6 In one embodiment, the friction testing mechanism 22 includes:

[0098] A bracket fixing fixture 221 is used to fix the bracket so that the bracket is arranged corresponding to the archwire;

[0099] A cantilever beam 222 is provided with a groove, and the bracket fixing fixture 221 is fixedly installed in the groove of the cantilever beam 222;

[0100] A force sensor 223 is provided on the cantilever beam 222 and is used to detect the friction force between the bracket and the archwire and output a corresponding friction test signal;

[0101] A friction triaxial displacement platform 224 is fixedly connected to the cantilever beam 222, and the friction triaxial displacement platform 224 is used to apply a preset load to the archwire and the bracket;

[0102] A reciprocating motion platform 225 is used to support the friction three-axis displacement platform 224;

[0103] The first motor 226 is connected to the reciprocating motion platform 225 . The first motor 226 is configured to receive a first driving signal and drive the reciprocating motion platform 225 to perform reciprocating motion according to the first driving signal.

[0104] In this embodiment, after the arch wire is fixed and pre-tightened, the bracket can be clamped and fixed by the bracket fixing fixture 221; the bracket fixing fixture 221 can be composed of a placement table 2211, a pad 2212, a fixing bolt 2213 and a pin 2214. First, the placement table 2211, the pad 2212 and the bracket are installed in the groove on the cantilever beam 222 in sequence, and then the placement table 2211 and the pad 2212 are fixed by the fixing bolt 2213 and the pin 2214 respectively. The pad 2212 and the bracket can be solidified and fixed with 1 to 2 drops of glue before clamping and fixing to complete the fixation of the bracket.

[0105] Furthermore, the arch wire and the bracket are made to cooperate with each other and a load is applied. Specifically, the friction X-axis micrometer 2241 and the friction Y-axis micrometer 2242 of the friction three-axis displacement platform 224 are rotated to make the arch wire and the bracket cooperate with each other, and then the friction Z-axis micrometer 2243 is rotated, and the cantilever beam 222 is slowly lowered, so that the bracket is slowly lowered and pushes the arch wire, so that a certain load is generated between the arch wire and the bracket. Different loads can be applied according to the test requirements to test the friction corrosion performance of the arch wire under different loads during orthodontic treatment.

[0106] After that, the friction testing mechanism 22 is activated to cause reciprocating friction between the archwire and the bracket. Specifically, after the archwire and the bracket are fixed and pre-tightened, specific parameters are set using the computer 35 and the controller of the first motor 226. The first motor 226 drives the reciprocating motion platform 225 to move, and then drives the friction three-axis displacement platform 224 to move along the axis of the archwire length, so that the bracket can perform low-speed reciprocating friction motion relative to the archwire. At the same time, different movement speeds, movement distances and movement cycles can be set according to test requirements to simulate different reciprocating motion cycles and test the friction corrosion performance of the archwire under different reciprocating motion cycles.

[0107] It is understood that the first motor 226 can drive the reciprocating platform 225 via the coupling 228 to perform a reciprocating friction test between the archwire and the bracket, thereby causing the cantilever beam 222 to deform. The force sensor 223 disposed on the cantilever beam 222 can then record the generated electrical signals representing the load and friction force in real time. For example, two force sensors 223 can be provided: one disposed on the upper and lower surfaces of the cantilever beam 222 to record the load signal, and the other disposed on the left and right surfaces of the cantilever beam 222 to record the friction force signal. The force sensor 223 may include a strain gauge that senses the deformation of the cantilever beam 222, generates a corresponding electrical signal, and then outputs the electrical signal to the data acquisition and computing component 3. Furthermore, the first drive signal received by the first motor 226 can be issued by a motor controller 227. The motor controller 227 can be connected to the computer 35 in the data acquisition and computing component 3, and the computer 35 can issue a control signal, causing the motor controller 227 to output the corresponding first drive signal to the first motor 226.

[0108] Reference Figures 7 to 9 In one embodiment, the electrochemical corrosion testing assembly 1 comprises:

[0109] An electrolytic cell 11 is provided with an archwire groove for placing an archwire, and an accommodating cavity is formed in the electrolytic cell 11 for accommodating artificial saliva;

[0110] An adjusting electrode positioning and fixing mechanism 12 is provided corresponding to the electrolytic cell 11 and is used to adjust the spacing and height of the electrodes in the artificial saliva to output corresponding electrode signals;

[0111] The electrochemical testing mechanism 13 has its input end connected to the arch wire and the output end of the adjusting electrode positioning and fixing mechanism 12 respectively. The electrochemical testing mechanism 13 performs electrochemical testing on the arch wire according to the electrode signal and outputs a corresponding corrosion test signal to the data acquisition and calculation component 3.

[0112] In this embodiment, to ensure the accuracy of the electrochemical test, the electrolytic cell 11 can be made of an insulating and acid-resistant material. Its main function is to accommodate artificial saliva and provide isolation and protection. The grooves on the electrolytic cell 11 can be set according to the shape of the archwire. It is understandable that in electrochemical testing, the electrode spacing and height will seriously affect the test results, and seriously lead to problems such as ohmic drop, poor electrolyte uniformity, mutual interference between electrodes and measurement errors. Therefore, in this embodiment, the electrode positioning and fixing mechanism 12 is used to control the spacing and height of the electrodes, effectively improving the accuracy of the test. At the same time, the modular design facilitates the removal and installation of the electrodes. The electrochemical testing mechanism 13 can be an electrochemical workstation, which specifically uses electrochemical methods to evaluate the corrosion behavior of the material, including corrosion rate, corrosion type and corrosion resistance of the material, mainly dynamic polarization curve testing and electrochemical impedance testing. After the three electrodes are connected to the electrochemical testing mechanism 13 through wires, the electrochemical testing mechanism 13 is turned on. The specific working principle of the electrochemical testing mechanism 13 is not described in detail here.

[0113] Reference Figure 2 and Figure 10 In one embodiment, the orthodontic archwire friction corrosion testing device further includes a platform 5, the electrochemical corrosion testing component 1 and the friction wear testing component 2 are respectively arranged on the platform 5, and the adjusting electrode positioning and fixing mechanism 12 includes:

[0114] Reference electrode 121;

[0115] a counter electrode 122;

[0116] The electrode sealing ring 123 is used to fix the reference electrode 121 and the counter electrode 122;

[0117] A fixture 124 is used to fix the electrode sealing ring 123;

[0118] The module lead screw 125 is fixedly mounted on the platform 5;

[0119] A linear slider 126 is slidably disposed on the module lead screw 125 and connected to the clamp 124;

[0120] The second motor 127 is connected to the linear slider 126. The second motor 127 is used to receive a second drive control signal and drive the linear slider 126 to slide according to the second drive control signal, so as to drive the reference electrode 121 and the counter electrode 122 to move.

[0121] In this embodiment, the orthodontic archwire friction corrosion testing device can include a horizontally arranged platform 5 for placing the electrochemical corrosion testing component 1 and the friction and wear testing component 2. The module screw 125 in the electrode positioning and fixing mechanism 12 can be fixedly set on the platform 5. The reference electrode 121, the counter electrode 122, and the working electrode are the three electrodes required for the electrochemical workstation to perform testing. The working electrode in this embodiment is the archwire. After the three electrodes are connected to the electrochemical testing mechanism 13 via wires, the electrochemical testing mechanism 13 is turned on, a test save folder and setting path are established on the computer 35, and the experimental parameters are set before the test can begin. The reference electrode 121 can be a silver chloride electrode, and the counter electrode 122 can be high-purity platinum. The reference electrode 121 and the counter electrode 122 are fixed by the electrode sealing ring 123, and the electrode sealing ring 123 is fixed on the clamp 124, and then the clamp 124 is fixedly connected to the linear slider 126; and the module screw 125 includes an X-axis module screw 1251, a Y-axis module screw 1252 and a Z-axis module screw 1253; the linear slider 126 includes an X-axis linear slider 1261, a Y-axis linear slider 1262 and a Z-axis linear slider 1263. Specifically, fixture 124 is connected to Z-axis linear slider 1263 and moves on Z-axis module lead screw 1253. Z-axis module lead screw 1253 is connected to Y-axis linear slider 1262 and moves on Y-axis module lead screw 1252. Y-axis module lead screw 1252 is connected to X-axis linear sliders 1261 at both ends and moves on X-axis module lead screws 1251 at both ends. Computer 35 in data acquisition and calculation component 3 controls second motor 127 to drive the sliders, thereby driving reference electrode 121 and counter electrode 122 to move. Adjusting the spacing and height between reference electrode 121, counter electrode 122 and the archwire effectively improves the accuracy of electrochemical testing.

[0122] Reference Figure 11In one embodiment, the data acquisition and calculation component 3 includes:

[0123] A bridge box 31, the input end of the bridge box 31 is connected to the output end of the friction and wear test assembly 2, and the bridge box 31 is used to collect the friction test signal output by the friction and wear test assembly 2;

[0124] A stress amplifier 32 , the input end of which is connected to the output end of the bridge box 31 , and the stress amplifier 32 is used to amplify the friction test signal and output a corresponding electrical signal;

[0125] a friction force data collector 33, wherein the input end of the friction force data collector 33 is connected to the output end of the stress amplifier 32, and the friction force data collector 33 is used to receive an electrical signal corresponding to the friction force, and output a friction force signal after processing;

[0126] A load data collector 34, the input end of which is connected to the output end of the stress amplifier 32, and the load data collector 34 is used to receive an electrical signal corresponding to the load, and output a load signal after processing;

[0127] A computer 35, wherein the input end of the computer 35 is respectively connected to the output end of the electrochemical corrosion test assembly 1, the output end of the friction data collector 33, and the output end of the load data collector 34. The computer 35 is used to calculate the corrosion parameters of the arch wire based on the corrosion test signal, and calculate the friction parameters of the arch wire based on the friction signal and the load signal.

[0128] In this embodiment, during the reciprocating friction and wear test, the force sensor 223 on the cantilever beam 222 generates real-time load and friction electrical signals, namely, friction test signals. These signals are collected by the bridge box 31, further amplified by the stress amplifier 32, and then transmitted to the friction data collector 33 and the load data collector 34, respectively. Finally, they are collected by the computer 35. After software data processing and analysis, the corresponding real-time load, friction, and friction coefficient between the archwire and the bracket are obtained. This allows the friction and wear of the archwire to be determined. Furthermore, the computer 35 can calculate the corrosion parameters of the archwire based on the corrosion test signals, thereby facilitating the assessment of the contribution of friction and corrosion to archwire failure. Further amplification of the electrical signals by the stress amplifier 32 facilitates signal acquisition by the friction data collector 33 and the load data collector 34, ensuring the accuracy of the calculated results. Separate signal acquisition by the friction data collector 33 and the load data collector 34 prevents signal crosstalk.

[0129] Reference Figure 8In one embodiment, the orthodontic archwire friction corrosion testing device further comprises:

[0130] A temperature control component 4 is provided in the electrochemical corrosion test component 1 , and is used to control the temperature of the artificial saliva in the electrochemical corrosion test component 1 .

[0131] In this embodiment, the temperature control component 4 can be used to change the temperature of the artificial saliva in the electrochemical corrosion test component 1, thereby accurately simulating oral environments at different temperatures, solving the limitation problem that traditional electrochemical test systems can only test in room temperature environments.

[0132] The temperature control component 4 can be set in the electrolytic cell 11. For details, please refer to Figure 8 In an exemplary technology, the electrolytic cell 11 further includes a sealing pressure plate 14 and a sealing ring 15. The rear end face of the electrolytic cell 11 has an open stepped opening for installing the temperature control component 4. After the temperature control component 4 is installed, the sealing pressure plate 14 and the sealing ring 15 can be used to fix the connection to ensure the sealing of the electrolytic cell 11.

[0133] Further, refer to Figure 12 and Figure 13 In one embodiment, the temperature control component 4 includes:

[0134] Semiconductor chip 41;

[0135] A semiconductor temperature control system 42 is connected to the semiconductor chip 41 and is used to control the semiconductor chip to heat or cool;

[0136] A cooling plate 43 is provided in contact with the semiconductor chip 41. A water inlet 431 is provided at one end of the cooling plate 43, and a water outlet 433 is provided at the other end of the cooling plate 43. The cooling plate 43 is used to cool the semiconductor chip 41 during refrigeration.

[0137] The temperature sensor 44 is arranged on the cooling plate 43. The output end of the temperature sensor 44 is connected to the input end of the semiconductor temperature control system 42. The temperature sensor 44 is used to detect the temperature of the artificial saliva in the electrochemical corrosion test assembly 1 and output a corresponding temperature detection signal to the semiconductor temperature control system 42.

[0138] In this embodiment, due to the requirements of electrochemical testing, the material must be insulating. Therefore, the material of the semiconductor chip 41 can be DPC ceramic or other insulating materials, and the material of the temperature sensor 44 probe can be PT100 or other insulating materials. This ensures that the semiconductor chip 41 and the temperature sensor 44 probe have good insulation and thermal conductivity, and will not affect the test results. Before the electrochemical test, the artificial saliva of the semiconductor chip 41 is heated or cooled. This is mainly achieved by changing the direction of the current through the semiconductor cooling and heating temperature control system to achieve cooling or heating on the same side of the semiconductor chip 41. When the direction of the current changes, the originally cooling side will become the heating end, and the originally heating side will become the cooling end, thereby achieving heating or cooling of the artificial saliva. The main function of the temperature sensor 44 is to detect the temperature of the artificial saliva and output the temperature data to the semiconductor temperature control system for display. The cooling plate 43 is disposed in contact with one side of the semiconductor chip 41. By providing a water inlet 431 and a water outlet 433, while the other side of the semiconductor chip 41 is cooled, the liquid flowing in the cooling plate 43 can dissipate heat and cool the side in contact with the semiconductor chip 41. It should be noted that the components of the orthodontic archwire friction corrosion testing device of this solution in the above embodiment all adopt a modular design to facilitate the disassembly and installation of the components.

[0139] The present invention also provides an orthodontic arch wire friction corrosion testing method implemented based on the above-mentioned orthodontic arch wire friction corrosion testing device.

[0140] Reference Figure 14 In one embodiment, a method for testing friction corrosion of an orthodontic arch wire comprises the following steps:

[0141] S100, fixing an archwire on the electrochemical corrosion test assembly 1, and pouring artificial saliva into the electrochemical corrosion test assembly 1;

[0142] S200, controlling the friction and wear test component 2 to perform a friction and wear test on the bracket and the archwire, and simultaneously controlling the electrochemical corrosion test component 1 to perform an electrochemical corrosion test on the archwire in artificial saliva;

[0143] S300: Calculate the friction test signal output by the friction and wear test component 2 to obtain the friction parameter of the arch wire, and calculate the corrosion test signal output by the electrochemical corrosion test component 1 to obtain the corrosion parameter of the arch wire.

[0144] In this embodiment, step S100 is to fix the arch wire on the electrochemical corrosion test assembly 1 and pour artificial saliva into the electrochemical corrosion test assembly 1 to simulate the conditions of the arch wire in the human oral environment to improve the accuracy of the test results. Step S200 is to simultaneously perform friction and wear tests and electrochemical tests on the brackets and the arch wire, thereby simulating the wear and corrosion conditions of the arch wire and the brackets in the human oral environment. Step S300 is to calculate the friction parameters of the arch wire based on the friction test signal and the corrosion parameters of the arch wire based on the corrosion test signal, thereby evaluating the proportion of friction and corrosion in the arch wire failure and exploring the synergistic effect between friction and corrosion of the arch wire in the oral environment during orthodontic treatment.

[0145] In order to better illustrate the inventive concept of this solution, Figures 1 to 14 , the process of the orthodontic arch wire friction corrosion testing device and the orthodontic arch wire friction corrosion testing method of the present invention is described.

[0146] For the friction and wear test assembly 2, first, the archwire is installed and placed in the archwire groove on the upper end surface of the electrolytic cell 11 to clamp and fix the archwire. Then, different rotation angles between the archwire and the bracket are simulated. Specifically, the differential head of the rotating platform 214 is used to form a certain rotation angle between the archwire and the bracket according to the test requirements, and the locking screw is twisted to fix the rotation angle. Then, the calibrated preloaded three-axis displacement platform 213 is used to rotate the preloaded Y-axis micrometer 2132 to apply a certain preload force to the archwire according to the test requirements.

[0147] Secondly, the bracket is clamped and fixed. Specifically, the placement table, pad and bracket are installed in the groove at the top of the cantilever beam 222 in sequence, and then the placement table and the pad are fixed with fixing bolts and pins respectively. Before clamping and fixing, 1 to 2 drops of glue are used to solidify and fix the pad and bracket to complete the bracket fixation.

[0148] Then, the archwire and the bracket are matched, and a load is applied. Specifically, the friction X-axis micrometer 2241 and the friction Y-axis micrometer 2242 of the friction three-axis displacement platform 224 are rotated to make the archwire and the bracket match each other. Then, the friction Z-axis micrometer 2243 is rotated, and the cantilever beam 222 is slowly lowered, so that the bracket is slowly lowered and pushes the archwire, so that a certain load is generated between the archwire and the bracket.

[0149] Finally, the friction testing mechanism 22 is activated to cause reciprocating friction between the archwire and the bracket. Specifically, the computer 35 and the first motor 226 controller set specific parameters, and the first motor 226 drives the reciprocating motion platform 225 to move, which in turn drives the friction three-axis displacement platform 224 to move along the axis of the archwire length, thereby achieving low-speed reciprocating friction motion of the bracket relative to the archwire.

[0150] For the electrochemical corrosion test component 1, artificial saliva is first prepared. Specifically, after the archwire bracket is installed, fixed and pre-tightened, an appropriate amount of artificial saliva is poured into the electrolytic cell.

[0151] The second step is to set the experimental temperature. Specifically, turn on the semiconductor cooling and heating temperature control system, set the experimental temperature according to the test requirements, and simulate the temperature of the human mouth.

[0152] Finally, the electrochemical test parameters are set. Specifically, according to the three-electrode system, the electrochemical testing mechanism 13 is connected to the arch wire, the reference electrode 121 and the counter electrode 122 respectively to perform a dynamic polarization curve test or an electrochemical impedance test. The specific electrochemical test parameters are set, and the open circuit potential test time is 900s to ensure the stability of the electrochemical system. After the open circuit potential test is completed, the reciprocating friction and wear test is started to ensure that the friction and wear test and the electrochemical test are carried out simultaneously, simulating the simultaneous testing of the friction and wear and dynamic corrosion performance of the arch wire bracket in an artificial saliva environment.

[0153] After the synchronous test is completed, the reciprocating friction and wear test data and the electrochemical test data are stored separately, the arch wire and bracket are removed, and ultrasonic cleaning is performed on them for 5 minutes, and they are blown dry and stored.

[0154] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's description and drawings under the technical concept of the present invention, or any direct / indirect application in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An orthodontic arch wire friction corrosion testing device, characterized in that: include: An electrochemical corrosion testing assembly is used to place an archwire and contain artificial saliva, and to immerse the archwire in the artificial saliva. The electrochemical corrosion testing assembly is used to perform an electrochemical test on the archwire in the artificial saliva to output a corresponding corrosion test signal; A friction and wear test assembly, corresponding to the electrochemical corrosion test assembly, is used to fix the bracket and perform a friction test on the bracket and the archwire to output a corresponding friction test signal; a data acquisition and calculation component, wherein an acquisition end of the data acquisition and calculation component is connected to an output end of the friction and wear test component and an output end of the electrochemical corrosion test component, respectively, and the data acquisition and calculation component is used to acquire the friction test signal and the corrosion test signal, and calculate the friction parameters and corrosion parameters of the archwire; The friction and wear testing assembly includes a fixed pre-tightening mechanism and a friction testing mechanism; the fixed pre-tightening mechanism is provided corresponding to the electrochemical corrosion testing assembly, and is used to fix the arch wire, apply a preset pre-tightening force to the arch wire, and control the rotation angle of the arch wire and the bracket; the fixed pre-tightening mechanism includes an arch wire pressing block, which is provided corresponding to the position where the electrochemical corrosion testing assembly is placed on the arch wire, and is used to fix the arch wire; The electrochemical corrosion test assembly comprises: An electrolytic cell, wherein the electrolytic cell is provided with an archwire groove for placing an archwire, and the electrolytic cell is formed with a receiving cavity for receiving artificial saliva; An adjusting electrode positioning and fixing mechanism is provided corresponding to the electrolytic cell, and is used to adjust the spacing and height of the electrodes in the artificial saliva to output corresponding electrode signals; an electrochemical testing mechanism, wherein the input end of the electrochemical testing mechanism is respectively connected to the arch wire and the output end of the adjusting electrode positioning and fixing mechanism, the electrochemical testing mechanism performs an electrochemical test on the arch wire according to the electrode signal and outputs a corresponding corrosion test signal to the data acquisition and calculation component; Also includes: A temperature control component is provided in the electrochemical corrosion test component, and is used to control the temperature of the artificial saliva in the electrochemical corrosion test component.

2. The orthodontic archwire friction corrosion testing device according to claim 1, characterized in that: The friction testing mechanism is configured to correspond to the electrochemical corrosion testing assembly. The friction testing mechanism is used to apply a preset load to the arch wire and the bracket, and to fix the bracket to perform a reciprocating friction test on the arch wire, and output a corresponding friction test signal.

3. The orthodontic archwire friction corrosion testing device according to claim 2, characterized in that: The fixed pre-tightening mechanism further includes: A positioning bolt, used to fix the archwire pressing block to the electrochemical corrosion test assembly; A preloaded triaxial displacement platform, mechanically connected to the arch wire, for applying a preset preload force to the arch wire; The rotating platform is mechanically connected to the arch wire and is used to control the rotation angle of the arch wire and the bracket.

4. The orthodontic archwire friction corrosion testing device according to claim 2, characterized in that: The friction testing mechanism comprises: A bracket fixing fixture is used to fix the bracket so that the bracket is arranged correspondingly to the archwire; A cantilever beam, wherein a groove is formed on the cantilever beam, and the bracket fixing fixture is fixedly installed in the groove of the cantilever beam; a force sensor, disposed on the cantilever beam, for detecting the friction force between the bracket and the archwire and outputting a corresponding friction test signal; A friction triaxial displacement platform is fixedly connected to the cantilever beam, and the friction triaxial displacement platform is used to apply a preset load to the archwire and the bracket; A reciprocating motion platform, used to carry the friction three-axis displacement platform; The first motor is connected to the reciprocating motion platform, and is used to receive a first driving signal and drive the reciprocating motion platform to perform reciprocating motion according to the first driving signal.

5. The orthodontic archwire friction corrosion testing device according to claim 4, characterized in that: The orthodontic archwire friction corrosion testing device further comprises a platform, the electrochemical corrosion testing component and the friction wear testing component are respectively arranged on the platform, and the adjusting electrode positioning and fixing mechanism comprises: Reference electrode; counter electrode; An electrode sealing ring, used for fixing the reference electrode and the counter electrode; A fixture, used for fixing the electrode sealing ring; The module lead screw is fixed on the platform; a linear slider, slidably disposed on the module lead screw and connected to the fixture; The second motor is connected to the linear slider, and is used to receive a second drive control signal and drive the linear slider to slide according to the second drive control signal, so as to drive the reference electrode and the counter electrode to move.

6. The orthodontic archwire friction corrosion testing device according to claim 1, characterized in that: The data acquisition and calculation components include: A bridge box, the input end of which is connected to the output end of the friction and wear test assembly, and the bridge box is used to collect the friction test signal output by the friction and wear test assembly; A stress amplifier, the input end of the stress amplifier is connected to the output end of the bridge box, and the stress amplifier is used to amplify the friction test signal and output a corresponding electrical signal; A friction force data collector, wherein the input end of the friction force data collector is connected to the output end of the stress amplifier, and the friction force data collector is used to receive an electrical signal corresponding to the friction force, and output a friction force signal after processing; A load data collector, wherein the input end of the load data collector is connected to the output end of the stress amplifier, and the load data collector is used to receive an electrical signal corresponding to the load, and output a load signal after processing; A computer, wherein the input end of the computer is respectively connected to the output end of the electrochemical corrosion test assembly, the output end of the friction force data collector, and the output end of the load data collector, and the computer is used to calculate the corrosion parameters of the arch wire according to the corrosion test signal, and calculate the friction parameters of the arch wire according to the friction force signal and the load signal.

7. The orthodontic archwire friction corrosion testing device according to claim 1, characterized in that: The temperature control assembly comprises: semiconductor wafers; A semiconductor temperature control system connected to the semiconductor chip, the semiconductor temperature control system is used to control the semiconductor to heat or cool; A cooling plate, the cooling plate being arranged in contact with the semiconductor chip, having a water inlet at one end and a water outlet at the other end, and being used to cool the semiconductor chip during refrigeration; A temperature sensor is arranged on the cooling plate, and the output end of the temperature sensor is connected to the input end of the semiconductor temperature control system. The temperature sensor is used to detect the temperature of the artificial saliva in the electrochemical corrosion test assembly and output a corresponding temperature detection signal to the semiconductor temperature control system.

8. A method for testing orthodontic arch wire friction corrosion based on the orthodontic arch wire friction corrosion testing device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The arch wire is fixedly placed on the electrochemical corrosion test component, and artificial saliva is poured into the electrochemical corrosion test component; Controlling the friction and wear test component to perform friction and wear tests on brackets and arch wires while controlling the electrochemical corrosion test component to perform electrochemical corrosion tests on arch wires in artificial saliva; The friction test signal output by the friction and wear test component is calculated to obtain the friction parameter of the arch wire, and the corrosion test signal output by the electrochemical corrosion test component is calculated to obtain the corrosion parameter of the arch wire.

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