CN210269484U - Square arch wire and bracket friction device - Google Patents
Square arch wire and bracket friction device Download PDFInfo
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- CN210269484U CN210269484U CN201920803508.3U CN201920803508U CN210269484U CN 210269484 U CN210269484 U CN 210269484U CN 201920803508 U CN201920803508 U CN 201920803508U CN 210269484 U CN210269484 U CN 210269484U
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Abstract
The utility model discloses a friction device of a square arch wire and a bracket, which comprises a square arch wire for orthodontic correction of teeth, an experiment table board horizontally placed, an angle displacement table fixedly connected on the experiment table board, a fixed pre-tightening mechanism fixedly connected on the angle displacement table and used for straightening the pre-tightening square arch wire, a friction testing mechanism which is positioned on one side of the fixed pre-tightening mechanism, is fixedly arranged on the experiment table board and is provided with a cantilever beam and applies load to the square arch wire through the cantilever beam, and a data acquisition system which is connected with the cantilever beam and used for measuring data after the stress feedback of the cantilever beam; the utility model discloses a clamping and pretension of fixed pretension mechanism realization side arch wire, the free regulation of angle displacement platform realization side arch wire angle can simulate side arch wire and hold in the palm the cooperation friction state of groove under different rotation angles to through the laser displacement sensor of high accuracy in the experimentation real-time measurement side arch wire pretightning force that receives, make the experimental result more reliable effective.
Description
Technical Field
The utility model relates to an orthodontic research equipment field especially relates to a side arch wire and support groove friction device.
Background
Whether the teeth of the oral cavity are tidy or not in modern society not only influences the functions of chewing, language expression and the like of an individual, but also influences social contact and confidence establishment of the individual to a great extent, so that the tidy health and the attractive appearance of the teeth are more and more emphasized by people.
Orthodontic is the correction of malocclusion by applying a certain corrective force to teeth to cause the teeth to move physiologically. A dental appliance commonly used in orthodontic correction is composed of an archwire and a bracket. Orthodontic forces are generally achieved by the archwire deforming restorative forces caused by the difference between the predetermined shape of the archwire and the actual shape of the tooth. The shape of the arch wire, the size of the correcting force and the size of the correcting torque are judged and selected by an orthodontist according to the actual arrangement condition of the oral teeth. The friction force generated by sliding between the arch wire and the bracket in the correcting process has obvious influence on the correcting force, and the reduction of the friction force of the arch wire bracket becomes a main research target. The friction force between the arch wire brackets is influenced by factors of all aspects such as the material, the shape and the size of the arch wire, the type and the shape of the brackets, the angles of the brackets and the arch wire, the ligation mode, the size of the ligation force, the sliding speed and the like, and the current test data is not finished. Therefore, the relative sliding condition of the square arch wire brackets in the actual working state is simulated, the friction force among the square arch wire brackets is accurately measured, and a powerful basis can be provided for the design and manufacture of the square arch wire brackets and the related research of orthodontic treatment and orthodontics of stomatologists.
In the research of the frictional wear of the square arch wire and the bracket, most of the existing friction experiment devices can only measure the friction condition when the square arch wire and the bracket are in right-to-right friction. However, when the square arch wire and the bracket are used in the oral cavity, the square arch wire is inevitably twisted or misplaced with the bracket to form a certain rotation angle, so that the existing measuring equipment cannot accurately measure.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned prior art not enough, the utility model aims at providing a square arch wire and support groove friction device aims at solving the problem that can't accurately simulate the friction of square arch wire and support groove under different rotation angles among the current experimental facilities.
The technical scheme of the utility model as follows:
a friction device of a square arch wire and a bracket comprises the square arch wire for orthodontic correction of teeth, a horizontally placed experiment table, and is characterized by also comprising an angle displacement table fixedly connected on the experiment table, a fixed pre-tightening mechanism fixedly connected on the angle displacement table and used for straightening the pre-tightened square arch wire, a friction testing mechanism which is positioned on one side of the fixed pre-tightening mechanism, is fixedly arranged on the experiment table and is provided with a cantilever beam and applies load to the square arch wire through the cantilever beam, and a data acquisition system which is connected with the cantilever beam and used for measuring data after being fed back through the stress of the cantilever beam;
the rotating axis of the angle displacement table is parallel to the length direction of the square arch wire, and the angle displacement table drives the fixed pre-tightening mechanism to rotate;
the friction testing mechanism drives the cantilever beam to rub the square arch wire in a reciprocating mode along the length direction of the square arch wire.
Further, the fixed pre-tightening mechanism comprises a base, a fixed block fixedly connected to one end of the base, a lead screw mounting groove formed in the middle of the base, a lead screw system positioned in the lead screw mounting groove and provided with a lead screw nut, a movable block mounted on the lead screw nut and moving in the lead screw mounting groove through the rotation of a lead screw, and a square arch wire fixing plate fixedly connected to the upper surface of the fixed block and the upper surface of the movable block respectively;
and two ends of the square arch wire are respectively pressed and fixed on the fixed block and the movable block through the square arch wire fixing plate.
Furthermore, the fixed block is connected with 2 square arch wire fixed plates, and the 2 square arch wire fixed plates are arranged along the length direction of the square arch wire; the movable block is connected with 2 square arch wire fixing plates, and the 2 square arch wire fixing plates are arranged along the length direction of the square arch wire.
Furthermore, arch wire through grooves are formed in the surfaces, located on the fixed square arch wire, of the fixed block and the movable block, and the square arch wire is fixed in the arch wire through grooves.
Furthermore, the fixed pre-tightening mechanism further comprises a laser displacement sensor which is fixedly arranged on the side face of the movable block and used for measuring the distance between the movable block and the fixed block, and a data acquisition card which is electrically connected with the laser displacement sensor in a matched mode.
Furthermore, the friction testing mechanism comprises a friction triaxial displacement table fixed on the experimental table surface, a cantilever beam fixedly connected on the displacement output end of the friction triaxial displacement table, a placing table fixedly connected at the tail end of the cantilever beam and provided with a groove and in a concave shape, a bracket fixing block fixedly connected in the groove of the placing table, and a bracket positioned in the groove of the placing table and fixedly connected on the bracket fixing block;
the bracket surface is in contact with the square arch wire and rubs back and forth along the length direction of the square arch wire.
Furthermore, a motor is fixedly connected to a moving shaft which is arranged on the friction three-shaft displacement table and used for controlling the displacement output end to move along the length direction of the square arch wire, and a motor controller used for controlling the motor is electrically connected to the motor.
Furthermore, the data acquisition system comprises a plurality of force sensors fixedly arranged on the cantilever beam, a bridge box electrically connected with the force sensors, a strain amplifier electrically connected with the bridge box, a data acquisition unit electrically connected with the strain amplifier, and a computer electrically connected with the data acquisition unit.
A method for testing the friction device of the square arch wire and the bracket comprises the following steps:
clamping and fixing the arch wire of the other side, and applying pretightening force;
clamping and fixing the bracket;
adjusting the angle displacement table to realize the matching of a preset rotation angle between the square arch wire and the bracket;
adjusting the friction testing mechanism to enable the orthodontic bracket to be in contact with the friction surface of the square arch wire and apply load;
starting a friction testing mechanism to perform reciprocating friction between the opposite arch wire and the bracket;
the data acquisition system acquires load information and friction force information and obtains a friction coefficient through software calculation.
Compared with the prior art, the utility model discloses a fixed pretension mechanism realizes the clamping and the pretension of side arch wire, and the free regulation of side arch wire angle is realized to the angular displacement platform, can simulate the cooperation friction state of side arch wire and support groove under different rotation angle to through the laser displacement sensor of high accuracy in the experimentation real-time measurement side arch wire pretightning force that receives, make the experimental result more reliable effective, to the change of deep research different rotation angle and pretightning force have very big help to the influence of side arch wire support groove friction wear performance, provide a more reliable effectual simulation experiment method for arch wire and support groove friction wear performance research.
Drawings
Fig. 1 is a schematic structural view of a square arch wire and bracket friction device in an embodiment of the invention.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Fig. 3 is a schematic structural diagram of a fixed pretensioning mechanism in an embodiment of the present invention.
Fig. 4 is a schematic view of a partial structure of a fixed pre-tightening mechanism according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a friction testing mechanism in an embodiment of the present invention.
FIG. 6 is a flowchart of an experimental method of the square archwire and bracket friction device of this embodiment.
In the figure: 1. a square arch wire; 2. an angular displacement stage; 3. fixing a pre-tightening mechanism; 5. a friction testing mechanism; 6. a data acquisition system; 31. a base; 32. a fixed block; 33. a lead screw mounting groove; 34. a lead screw system; 35. a movable block; 36. a square arch wire fixing plate; 37. a hand wheel; 38. an arch wire through groove; 39. a laser displacement sensor; 310. a data acquisition card; 51. rubbing a three-axis displacement table; 512. an electric motor; 513. a motor controller; 52. a cantilever beam; 53. a placing table; 54. a pin; 55. bracket fixing blocks; 56. a bracket; 61. a force sensor; 62. a bridge box; 63. a strain amplifier; 64. a data acquisition unit; 65. and (4) a computer.
Detailed Description
The utility model provides a square arch wire and bracket friction device, which is characterized in that the purpose, technical proposal and effect of the utility model are more clear and definite, and the following reference is made to the attached drawings and the examples are right for the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the utility model provides a friction device for a square arch wire and a bracket, which comprises a square arch wire 1 used for orthodontic correction, a horizontally placed experiment table (not shown in the figure), an angle displacement table 2 fixedly connected on the experiment table by screws, wherein the angle displacement table 2 is a device used for accurately rotating an object in a small angle range, and the device rotates around a fixed axis in the space. The angular displacement stage 2 is similar to the linear displacement stage but instead of providing linear movement, it rotates about a fixed axis below the mounting surface of the stage, turning the mounting stage a little bit over. The existing angle displacement table 2 is already standardized in production, belongs to the conventional technology in the mechanical field, and the specific structure is not described in detail. The angle displacement platform 2 is fixedly connected with a fixed pre-tightening mechanism 3, the fixed pre-tightening mechanism 3 is fixed and pre-tightens a square arch wire 1, the rotating axis of the angle displacement platform 2 is parallel to the length direction of the square arch wire 1, the angle displacement platform 2 drives the fixed pre-tightening mechanism 3 to rotate, and then the pre-tightened square arch wire 1 rotates along with the rotation, one side of the fixed pre-tightening mechanism 3 is provided with a friction testing mechanism 5, the friction testing mechanism 5 is provided with a cantilever beam 52 and applies load to the square arch wire 1 through the cantilever beam 52, and a data acquisition system 6 which is used for feeding back the stress of the cantilever beam 52 and measuring data.
As shown in fig. 1 and 3, the fixed pre-tightening mechanism 3 includes a base 31 fixedly connected to the angular displacement table 2 by screws, a fixed block 32 is welded to one end of the base 31 along the length direction of the square arch wire 1, the fixed block 32 is perpendicular to the surface of the base 31, a lead screw mounting groove 33 is formed in the middle of the base 31, the lead screw mounting groove 33 is arranged along the length direction of the square arch wire 1, a lead screw system 34 is mounted in the lead screw mounting groove 33, the lead screw system 34 drives a lead screw nut to move on a lead screw shaft by the rotation of the lead screw, so that the rotation is converted into movement, the lead screw system 34 is a conventional technology in the art, and the specific structure and principle. The screw nut is fixedly connected with a movable block 35 through a screw, the lower portion of the movable block 35 is clamped in the screw mounting groove 33, and the movable block 35 axially moves in the screw mounting groove 33 through rotation of a screw. The upper surface of the fixed block 32 and the upper surface of the movable block 35 are respectively and fixedly connected with a square arch wire fixing plate 36, two ends of the square arch wire 1 are respectively pressed and fixed on the fixed block 32 and the movable block 35 through the square arch wire fixing plate 36, a lead screw of the lead screw system 34 is exposed out of the base 31 and fixedly connected with a hand wheel 37, the movable block 35 is driven to be close to or far away from the fixed block 32 by rotating the hand wheel 37, when the movable block 35 is far away from the fixed block 32, the square arch wire 1 can be gradually tensioned, thereby the pretension of the square arch wire 1 is realized, in addition, the hand wheel 37 can also be replaced by an automatic motor, thereby.
As shown in fig. 4, arch wire through grooves 38 are formed in the surfaces of the fixed square arch wire 1 on the fixed block 32 and the movable block 35, the square arch wire 1 is fixed in the arch wire through groove 38, the square arch wire 1 is placed through the arch wire through groove 38, the square arch wire 1 does not deviate after being fixed, the square arch wire 1 in the arch wire through groove 38 protrudes out of the opening of the arch wire through groove 38, so that the square arch wire 1 is conveniently compressed, 2 square arch wire fixing plates 36 are fixedly connected to the fixed position of the arch wire 1 above the fixed block 32 through screws, and the 2 square arch wire fixing plates 36 are arranged along the length direction of the square arch; the fixing position of the arch wire 1 above the movable block 35 is connected with 2 square arch wire fixing plates 36 through screws, the 2 square arch wire fixing plates 36 are arranged along the length direction of the square arch wire 1, when the tail end of the square arch wire 1 is respectively positioned on the fixed block 32 and the movable block 35, the square arch wire 1 can be firmly fixed through the 2 side-by-side square arch wire fixing plates 36, and the square arch wire 1 is prevented from being separated in the experimental process.
As shown in fig. 2, a laser displacement sensor 39 is fixedly connected to a side surface of the movable block 35 through a screw, the laser displacement sensor 39 is used for measuring a distance between the movable block 35 and the fixed block 32, a data acquisition card 310 matched with the laser displacement sensor 39 is electrically connected to the laser displacement sensor 39, and the laser displacement sensor 39 can measure the distance between the movable block 35 and the fixed block 32 in an experimental process, so that a pre-tightening force applied to the square arch wire 1 is calculated in real time, and the real-time monitoring of the pre-tightening force is realized.
As shown in fig. 1, 2 and 5, the friction testing mechanism 5 includes a friction triaxial displacement table 51 fixed on the experiment table top by screws, the friction triaxial displacement table 51 is a conventional triaxial displacement table assembly, and the triaxial displacement table assembly has been standardized and is a conventional technology in the art. A cantilever beam 52 is fixedly connected to a moving output end of the friction triaxial displacement table 51 through a screw, as shown in fig. 1 and 4, the cantilever beam 52 is positioned between the fixed block 32 and the movable block 35 and is perpendicular to the square arch wire 1, a moving shaft on the friction triaxial displacement table 51, which controls the moving output end to move along the length direction of the square arch wire 1, is fixedly connected with a motor 512, the motor 512 is electrically connected with a motor controller 513, the motor 512 adopts a three-phase stepping motor, the three-phase stepping motor controller 513 can realize accurate control over the speed of the motor 512, and the cantilever beam 52 connected to the friction triaxial displacement table 51 can realize automatic translation along the length direction of the square arch wire 1, thereby avoiding manual operation and realizing accurate control over the subsequent friction process; the movement in the other two directions is controlled manually on the frictional triaxial displacement table 51 by means of a decitex gauge.
One end of the cantilever beam 52 is fixedly connected to the friction triaxial displacement table 51 through a screw, the other end of the cantilever beam protrudes out of the friction triaxial displacement table 51 and is the tail end of the cantilever beam 52, the tail end of the cantilever beam 52 is fixedly connected with a placing table 53 through a screw, a groove is formed in the middle of the placing table 53, the outline is in a concave shape, a bracket fixing block 55 is fixedly connected in the groove of the placing table 53 through a pin 54, the pin 54 penetrates through two side walls of the groove and the bracket fixing block 55, the bracket fixing block 55 is clamped and embedded in the groove of the placing table 53, a bracket 56 is bonded at the middle position on the bracket fixing block 55, the bracket 56 is positioned below the square arch wire 1 and is contacted with the square arch wire 1, under the normal working condition simulation condition, the length direction of the square arch wire 1 is vertical to; in the actual orthodontic process, the bracket 56 is bonded to the tooth surface, and the bracket 56 is clamped in place by the square archwire 1 to provide orthodontic correction.
When the friction triaxial displacement table 51 is started to work, the cantilever beam 52 is driven to reciprocate along the length direction of the square arch wire 1, and then the bracket 56 is driven to rub the square arch wire 1, so as to simulate a friction environment, wherein the working state is a normal working condition simulation.
The angle displacement table 2 drives the fixed pre-tightening mechanism 3 to rotate, and then the pre-tightened square arch wire 1 rotates along with the rotation, so that the square arch wire 1 and the square arch wire 1 can rotate a certain rotation angle under the normal working condition simulation condition, the rotation angle can be calculated through the scale on the angle displacement table 2, the rotation angle is simulated under the working state, and the simulation that the rotation angle is generated between the square arch wire 1 and the bracket 56 is realized.
As shown in fig. 1, the data acquisition system 6 includes a plurality of force sensors 61 fixedly attached to the cantilever beam 52, in this embodiment, the force sensors 61 are provided in number, the force sensors 61 are distributed on the upper and lower surfaces and the side surfaces of both sides of the cantilever beam 52, a bridge box 62 is electrically connected to the force sensors 61, the bridge box 62 is mainly used for measuring a change in a direct current resistance value of the force sensors 61, the bridge box 62 is electrically connected to a strain amplifier 63, the strain amplifier 63 is used for performing distortion-free amplification on an amplitude-modulated voltage sent from the bridge box 62, a data collector 64 is electrically connected to the strain amplifier 63, the data collector 64 is used for converting an analog signal into a digital signal, the data collector 64 is electrically connected to a computer 65, and the computer 65 processes and analyzes the data to obtain a load, a friction force and a friction coefficient. The computer 65 is electrically connected with and controls the motor controller 513, so that the motor 512 can be accurately controlled by the computer 65, the reciprocating motion of the cantilever beam 52 and the square arch wire 1 can be accurately controlled to generate friction according to the requirement of the data acquisition system 6, and the relative position and the relative pressure of the square arch wire 1 and the bracket 56 can be accurately controlled. As shown in fig. 3, the computer 65 is electrically connected to the data acquisition card 310, and can calculate the data acquired by the data acquisition card 310, so as to accurately calculate the pre-tightening force value.
Adjusting and fixing the pre-tightening mechanism 3 to realize pre-tightening of the square arch wire 1, monitoring the pre-tightening force of the square arch wire 1 in real time through the laser displacement sensor 39, enabling the adjusting and fixing the pre-tightening mechanism 3 to drive the square arch wire 1 to rotate by a certain rotation angle through the adjusting angle displacement table 2, adjusting the friction three-shaft displacement table 51 to control the cantilever beam 52 to upwards contact and prop against the square arch wire 1, enabling a certain load to be applied between the square arch wire 1 and the bracket 56, starting after setting the motion parameters of the motor 512, driving the shaft of the friction three-shaft displacement table 51 along the length direction of the square arch wire 1 to start forward and backward rotation through the motor 512, and driving the bracket 56 to drive the bracket 56 to do low-speed reciprocating friction. The data acquisition system 6 displays and records the stress value of the cantilever beam 52 in a voltage value form in real time through a strain gauge on the force sensor 61, and calculates to obtain the load, the friction force and the friction coefficient between the corresponding square arch wire 1 and the bracket 56.
As shown in fig. 6, the present scheme also provides a testing method based on the square arch wire and bracket friction device, which comprises the following steps:
and S10, clamping and fixing the opposite arch wire, and applying pretightening force. The specific process is to embed and install a square arch wire in the arch wire through groove of the movable block and the fixed block and fix the square arch wire by using an arch wire pressing plate and a screw. And the hand wheel is rotated to drive the movable block to move in the direction of the lead screw mounting groove, so that the square arch wire is tensioned and straightened. And simultaneously, observing the readings of the laser displacement sensor, and stopping rotating the hand wheel after the pre-tightening force reaches a specified value to finish pre-tightening and fixing the square arch wire.
And S20, clamping and fixing the bracket. The concrete process does, the pin will hold in the palm the groove that the groove fixed block was fixed and place the platform in, hold in the palm the groove fixed block in, then adjust friction triaxial displacement platform, make the side arch wire accomplish the correct contact with holding in the palm the groove, hold in the palm the groove and adjust friction triaxial displacement platform this moment and make and hold in the palm the groove fixed block and descend to have the certain distance with holding in the palm the groove bottom with tweezers centre gripping, it adjusts friction triaxial displacement platform to drip 1~2 after dripping glue on holding in the palm the groove fixed block, make and hold in the palm groove fixed block and hold in the palm the groove bottom and contact with the correct of side arch.
And S30, adjusting the angle displacement table to realize the matching of the square arch wire and the bracket at a preset rotation angle. The specific process is to adjust the angle displacement table to rotate the fixed pre-tightening mechanism by a preset angle so as to drive the square arch wire to rotate by the preset angle and generate a rotation angle between the square arch wire and the bracket.
And S40, adjusting the friction testing mechanism to enable the orthodontic bracket to be in contact with the friction surface of the square arch wire, and applying load. The specific process is to adjust the friction triaxial displacement table, thereby controlling the cantilever beam to contact upwards and push the square arch wire, and leading the positive pressure between the square arch wire and the bracket to reach a certain specified value.
And S50, starting the friction testing mechanism to rub the opposite arch wire and the bracket back and forth. After the motion parameters of the motor are set, the motor is started, and the motor drives the shaft of the displacement output end of the friction three-axis displacement platform to move along the length direction of the square arch wire, so that the cantilever beam is driven to drive the bracket to do low-speed reciprocating friction motion relative to the square arch wire.
And S60, the data acquisition system acquires the load information and the friction force information and obtains the friction coefficient through software calculation. The data acquisition system displays and records the stress value of the cantilever beam in a voltage value form in real time through a strain gauge on the force sensor, and obtains the load, the friction force and the friction coefficient between the corresponding square arch wire and the corresponding bracket through software analysis and calculation.
Compared with the prior art, the utility model discloses a fixed pretension mechanism realizes the clamping and the pretension of side arch wire, and the free regulation of side arch wire angle is realized to the angular displacement platform, can simulate the cooperation friction state of side arch wire and support groove under different rotation angle to through the laser displacement sensor of high accuracy in the experimentation real-time measurement side arch wire pretightning force that receives, make the experimental result more reliable effective, to the change of deep research different rotation angle and pretightning force have very big help to the influence of side arch wire support groove friction wear performance, provide a more reliable effectual simulation experiment method for arch wire and support groove friction wear performance research.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (8)
1. A friction device of a square arch wire and a bracket comprises the square arch wire for orthodontic correction of teeth, a horizontally placed experiment table, and is characterized by also comprising an angle displacement table fixedly connected on the experiment table, a fixed pre-tightening mechanism fixedly connected on the angle displacement table and used for straightening the pre-tightened square arch wire, a friction testing mechanism which is positioned on one side of the fixed pre-tightening mechanism, is fixedly arranged on the experiment table and is provided with a cantilever beam and applies load to the square arch wire through the cantilever beam, and a data acquisition system which is connected with the cantilever beam and used for measuring data after being fed back through the stress of the cantilever beam;
the rotating axis of the angle displacement table is parallel to the length direction of the square arch wire, and the angle displacement table drives the fixed pre-tightening mechanism to rotate;
the friction testing mechanism drives the cantilever beam to rub the square arch wire in a reciprocating mode along the length direction of the square arch wire.
2. The friction device for the square arch wire and the bracket as recited in claim 1, wherein the fixed pretension mechanism comprises a base, a fixed block fixedly connected with one end of the base, a lead screw installation groove arranged at the middle position of the base, a lead screw system arranged in the lead screw installation groove and provided with a lead screw nut, a movable block arranged on the lead screw nut and moving in the lead screw installation groove through the rotation of the lead screw, and a square arch wire fixing plate fixedly connected with the upper surface of the fixed block and the upper surface of the movable block respectively;
and two ends of the square arch wire are respectively pressed and fixed on the fixed block and the movable block through the square arch wire fixing plate.
3. The square arch wire and bracket friction device of claim 2, wherein 2 square arch wire fixing plates are connected to the fixing block, and the 2 square arch wire fixing plates are arranged along the length direction of the square arch wire; the movable block is connected with 2 square arch wire fixing plates, and the 2 square arch wire fixing plates are arranged along the length direction of the square arch wire.
4. The square arch wire and bracket friction device of claim 3, wherein arch wire through grooves are formed on the surfaces of the fixed square arch wire on the fixed block and the movable block, and the square arch wire is fixed in the arch wire through grooves.
5. The square archwire and bracket friction device of claim 2, wherein the fixed pretension mechanism further comprises a laser displacement sensor fixedly mounted on the side surface of the movable block and used for measuring the distance between the movable block and the fixed block, and a data acquisition card electrically connected with the laser displacement sensor in a matched manner.
6. The square arch wire and bracket friction device as recited in claim 1, wherein the friction testing mechanism comprises a friction triaxial displacement table fixed on the experimental table surface, a cantilever beam fixedly connected on the displacement output end of the friction triaxial displacement table, a placing table fixedly connected at the end of the cantilever beam and having a groove and being "concave", a bracket fixing block fixedly connected in the groove of the placing table, and a bracket located in the groove of the placing table and fixedly connected on the bracket fixing block;
the bracket surface is in contact with the square arch wire and rubs back and forth along the length direction of the square arch wire.
7. The square arch wire and bracket friction device as recited in claim 6, wherein a motor is fixedly connected to a moving shaft of the friction triaxial displacement table for controlling the displacement output end to move along the length direction of the square arch wire, and a motor controller for controlling the motor is electrically connected to the motor.
8. The square archwire and bracket friction device of claim 1, wherein said data acquisition system comprises a plurality of force sensors fixedly mounted on the cantilever beam, a bridge box electrically connected to the force sensors, a strain amplifier electrically connected to the bridge box, a data collector electrically connected to the strain amplifier, and a computer electrically connected to the data collector.
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| CN201920803508.3U CN210269484U (en) | 2019-05-30 | 2019-05-30 | Square arch wire and bracket friction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186795A (en) * | 2019-05-30 | 2019-08-30 | 深圳大学 | A kind of side's arch wire and bracket rubbing device and test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186795A (en) * | 2019-05-30 | 2019-08-30 | 深圳大学 | A kind of side's arch wire and bracket rubbing device and test method |
| CN110186795B (en) * | 2019-05-30 | 2024-05-24 | 深圳大学 | Square arch wire and bracket friction device and test method |
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