CN109540783A - A kind of arch wire bracket confficient of static friction measuring device - Google Patents
A kind of arch wire bracket confficient of static friction measuring device Download PDFInfo
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- CN109540783A CN109540783A CN201910016015.XA CN201910016015A CN109540783A CN 109540783 A CN109540783 A CN 109540783A CN 201910016015 A CN201910016015 A CN 201910016015A CN 109540783 A CN109540783 A CN 109540783A
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- arch wire
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- bracket
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- 238000009434 installation Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 14
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- 229910000831 Steel Inorganic materials 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Abstract
The invention discloses a kind of arch wire bracket confficient of static friction measuring devices.The program includes pedestal, the bottom of pedestal is provided with leveling component, leveling indicator is provided on pedestal, rotation is provided with mounting disc and drives the driving assembly of mounting disc rotation on pedestal, the axis horizontal of mounting disc is arranged, there are two arch wire grip slippers for setting in mounting disc, two arch wire grip slippers are located on the same radius of mounting disc, the instruction component for being used to indicate the tangent value of mounting disc rotational angle and the angle is additionally provided on pedestal, arch wire is fixed in mounting disc, and bracket is placed on arch wire, mounting disc rotation is driven by driving assembly, at heeling condition after rotating arch wire with mounting disc by horizontality, user is when bracket has just started to slide relative to arch wire, pass through the angle of instruction component record mounting disc rotation and the tangent value of this angle, obtain arch wire and bracket coefficient of maximum static friction, structure letter Single, measurement is convenient.
Description
Technical field
The present invention relates to orthodontic fields, and in particular to a kind of arch wire bracket confficient of static friction measuring device.
Background technique
Situations such as correction is irregular primarily directed to teeth arrangement, torsion, dislocation is moved it by reinforcing to tooth,
To change the position of tooth, achieve the effect that make denture marshalling, beauty.
It is exactly by bracket bonding in facing that orthodontic treatment, which makes tooth generate mobile method, at present, then will there is certain elasticity
Arch wire ligation with rigidity is on bracket, using the deformation power straightening of teeth of arch wire, or using arch wire rigidity, make it as tooth
The guide rail of tooth moving direction, guidance tooth generate the movement of orientation under the action of pulling force.Draw tooth with arch wire be draw
It leads when being moved, the frictional force between bracket and arch wire, which just becomes, restricts that tooth is mobile, influences one of Rate of tooth movement
Key factor.
Therefore, correction as a clinical treatment subject for, the coefficient of friction between arch wire and bracket is that one is very heavy
The research contents wanted；For the producer for producing orthodontic therapy device, the frictional force for reducing bracket and arch wire is its technology
Update an important research and development content of progress；For application arch wire and bracket are the doctor that patient carries out orthodontic treatment, choose
Bracket, the arch wire for selecting frictional force low are the main consideration contents of its selection purchase therapeutic device, also will basis in clinical position
The specific treatment use method of size design of bracket, arch wire frictional force (such as using the size of force value, anchorage design).
Therefore, easily and accurately measuring the coefficient of friction between bracket and arch wire is orthodontist, orthodontic appliance production and pin
Sell the primary demand of personnel.
Frictional force exists in the form of static friction and two kinds of dynamic friction, classical physics model static friction system
Several and pressure at right angle product description static frictions, then replace static friction system when calculating dynamic friction with dynamic friction coefficient
Number.The value of the two coefficients is between 0~1, and related with body surface finish, wherein dynamic friction coefficient rubs less than static state
Wipe coefficient.When appliance reinforces in orthodontic treatment, starting force to overcome maximum static friction force so that Tooth movement.
In the prior art, the Chinese invention patent that notification number is 103202734 B of CN discloses a kind of mouth cavity orthodontic and rescues
Device actual friction measurement platform, including bottom plate, the driving device being arranged on bottom plate, the first sliding block, test suite, clamping die
Block and the second sliding block, driving device, the first sliding block, clamp module and the second sliding block are sequentially connected, test group
Part is set to clamp module side and is attached thereto.
Although the invention device can test stiction and kinetic force of friction in mouth cavity orthodontic between bracket and arch wire,
It is that structure is more complex, operation is not convenient enough, and therefore, the present invention is directed to design the popularization of a kind of low cost, Miniaturizable to be installed to
The experimental provision of orthodontist, for studying the maximum static friction system generated between bracket and arch wire during Orthodontic movement
Number.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of measurements of arch wire bracket confficient of static friction to fill
It sets comprising pedestal, leveling component, leveling indicator, mounting disc, arch wire grip slipper and instruction component, the arch wire bracket are quiet
Friction coefficient measuring apparatus have the advantages that it is easy to operate, be conducive to miniaturization promote.
For achieving the above object, the technical solution adopted by the present invention is as follows:
A kind of arch wire bracket confficient of static friction measuring device, comprising:
Pedestal；
Component is leveled, the bottom of the pedestal is set to；
Indicator is leveled, is set on the pedestal, is used to indicate whether the pedestal is in horizontality；
Mounting disc is rotatably dispose on the pedestal, the axis horizontal setting of the mounting disc；
Driving assembly is set on the pedestal, for driving mounting disc around own axis；And
It indicates component, is set on the pedestal, be used to indicate the angle of mounting disc rotation and the tangent value of the angle；
There are two arch wire grip slippers, two arch wire grip slippers to be located at the same of the mounting disc for setting in the mounting disc
On one radius, the arch wire grip slipper includes:
Pedestal offers the groove for accommodating arch wire；And
Clamping piece is set on the pedestal, and the clamping piece includes:
Square is clamped, is slideably positioned in the pedestal and is located at the top of the groove, the clamping square is towards described
Friction striped is provided in groove surfaces；And
Screw is driven, is threadedly coupled with the pedestal, the end of the driving screw and the clamping square are rotatablely connected.
It is arranged in this way, before use, and passing through leveling firstly, user levels pedestal by leveling component
Whether indicator confirmation pedestal meets level requirement；
Then, mounting disc rotation is driven by driving assembly, so that two arch wire grip slippers are in a horizontal position, completed multiple
Position；
Then, arch wire is fixed on two arch wire grip slippers, and bracket is placed on arch wire, blend rubber circle or steel wire connect
Bracket and arch wire are connect, prevents bracket and arch wire to be detached from, when arch wire is clamped by arch wire grip slipper, arch wire side is placed in
In in groove, by rotation driving screw driving clamping square decline, so that clamping square compresses arch wire, thus by arch wire and seat
Body is fixed, and the rotary motion for driving screw is converted to the elevating movement of clamping square, completes the folder to arch wire convenient for user
It is tight to act or release the pinching action to arch wire, by being set to the friction striped of groove surfaces, so that clamping square is to arch wire
Clamping effect it is more preferable；
When starting measurement, mounting disc rotation is driven by driving assembly, makes arch wire that angle gradually occur with mounting disc rotation
Inclination, user can visually be located at the bracket on arch wire, when bracket just takes place mobile, read installation by instruction component
The tangent value of the angle of disk rotation and the corresponding angle；
According to the definition of maximum static friction force, maximum static friction force, which is equal to, starts object suffered by mobile object in a flash
External force, therefore, when bracket has just started sliding relative to arch wire, the frictional force that is subject to is maximum static friction force, and maximum quiet
Coefficient of friction is equal to the ratio between maximum static friction force and normal pressure, can be obtained by force resolution: maximal friction is equal to the weight of bracket
Power multiplied by arch wire and horizontal plane angle sine value, normal pressure be equal to bracket gravity multiplied by arch wire and horizontal plane institute at folder
Therefore cosine of an angle value indicates that the coefficient of maximum static friction on component is equal to the tangent value of arch wire and horizontal angle, that is, installs
The tangent value of disk rotational angle,
By indicating that component can directly read the coefficient of maximum static friction between arch wire and bracket, it is easy to use, facilitates reality
The researcher or relevant medical staff for testing room study or select to the stiction between arch wire and bracket suitable
Product.
Preferably, the instruction component includes:
Indicating graduation is set to the installation plate wheel edge；And
Indicator is fixedly installed on the pedestal；
The indicating graduation includes angle index and tangent numerical scale, each corresponding institute of the tangent numerical scale
Angle index is stated, each tangent numerical scale is corresponded in the disk of the mounting disc and marks a tangent numerical value, a corresponding institute
It states angle index and marks an angle value.
It is arranged in this way, when mounting disc stops operating, user reads the indicating graduation in mounting disc by indicator,
The angle value of mounting disc rotation and the tangent value of corresponding angles angle value are obtained, so that the maximum obtained between arch wire and bracket quiet is rubbed
Coefficient is wiped, structure design is simple, and it is convenient to read.
Preferably, the instruction component includes angular transducer and display module, angle is additionally provided on the pedestal
Degree-numerical value conversion module；
The angular transducer is set to the pedestal and connect with the mounting disc, for measuring and recording mounting disc
Rotational angle；
The angle-numerical value conversion module, is electrically connected, based on obtained by the angular transducer with the angular transducer
Angle-data be converted into tangent value；
The display module is electrically connected, for showing with the angular transducer, the angle-numerical value conversion module
Show measurement angle value and conversion after resulting numerical value.
It is arranged in this way, the angle of rotation angle value of mounting disc is recorded by angular transducer, angular transducer rotates this
Angle value is transmitted to angle-numerical value conversion module and display module, and angle value is converted to tangent by angle-numerical value conversion module
Value output is to display module, so that the angle value and corresponding tangent value that show mounting disc rotation on display module are (i.e.
Coefficient of maximum static friction), reading is more convenient, reduces the error of reading.
Preferably, further including position sensor, it is set in the mounting disc, the position sensor is for capturing bow
The real time position of bracket on silk, the position sensor are photoelectric sensor or CCD camera.
It is arranged in this way, replaces living human eye to observe bracket by photoelectric sensor or CCD camera, installing
Before disk rotation, the initial position of bracket is recorded by position sensor, in the rotation process of mounting disc, position sensor is real-time
The position for obtaining bracket, when the rigid setting in motion of bracket, the position that photoelectric sensor or CCD camera can capture bracket becomes
Change, user can read the record of mounting disc angle of rotation angle value at this time and tangent value, obtain maximum friction coefficient, reduction makes
User's naked eyes improve the accuracy of measurement to the false judgment of bracket rigid setting in motion moment.
Preferably, the driving component includes deceleration transmission component and rocking handle, the deceleration transmission component includes one
Grade reduction assemblies and double reduction component；
Primary speed-down component be synchronous pulley group, synchronous pulley group include the first synchronous pulley, the second synchronous pulley and
Synchronous belt, the number of teeth of the first synchronous pulley is less than the second synchronous pulley, and the first synchronous pulley is rotatably dispose on the pedestal, institute
The first synchronous pulley is stated coaxially to fix with the rocking handle；
Double reduction component includes reduction gearing and external toothing gear ring, and the external toothing gear ring fixing sleeve is set to the peace
Sabot is outer and engages with the reduction gearing, and the number of teeth of the reduction gearing is less than external toothing gear ring, second synchronous pulley
It is coaxially fixed with reduction gearing.
It is arranged in this way, by shaking rocking handle, the rotational power of rocking handle is transferred to mounting disc after double reduction, drives
Dynamic mounting disc slowly rotates, and convenient for controlling the velocity of rotation of mounting disc when manual operations, test is convenient.
Preferably, the driving component is Driven by Coaxial motor, the Driven by Coaxial motor and the mounting disc are coaxial
It is fixed.
It is arranged in this way, user can be rotated by Driven by Coaxial motor driven mounting disc, reduce the fiber crops of manual actuation
It is tired, and can make to drive mounting disc uniform rotation, stability of rotation.
Preferably, the driving component includes non-coaxial driving motor and friction pulley, the friction pulley is coaxially fixed
It is set in the shaft of the non-coaxial driving motor, support post, the non-coaxial driving motor is provided on the pedestal
Fix and be located at the lower section of the mounting disc with the support post, the mounting disc rotate on the support post and with institute
It states that friction pulley is tangent, the coarse surface layer abutted with friction pulley circumference side is provided on the circumference side of the mounting disc.
It is arranged in this way, friction pulley rotation is driven by non-coaxial driving motor, then friction pulley passes through coarse surface layer
Mounting disc rotation is driven, so that power is transferred to mounting disc, realizes the purpose of driving mounting disc rotation, so that mounting disc turns
Dynamic stability, when reducing mounting disc rotation because weight distribution it is uneven caused by shaking phenomenon.
Preferably, the arch wire grip slipper includes the first grip slipper and the second grip slipper, first grip slipper is solid
Due to the center of the mounting disc, second grip slipper is arranged by the circumferential surface of the mounting disc, second grip slipper and institute
It states mounting disc to be slidably connected and the second grip slipper radially sliding along the mounting disc, is provided with driving second in the mounting disc
The alignment component that grip slipper reciprocatingly slides.
It is arranged in this way, is slid by alignment the second grip slipper of Component driver to the direction far from the first grip slipper, from
And the arch wire being fixed on two arch wire grip slippers is straightened, so that arch wire is kept straightened condition, thus because arch wire becomes before reducing measurement
Shape and influence to measurement result, improve the accuracy of maximum friction coefficient measurement.
Preferably, the alignment component includes screw rod and alignment nut, school is provided in the disk of the mounting disc
Straight pedestal, one end of the screw rod are fixedly connected with second grip slipper, and the other end passes through the alignment pedestal and alignment spiral shell
Box thread connection, the screw rod are slidably connected with the alignment pedestal.
It is arranged in this way, after arch wire is fixed on two arch wire grip slippers, in alignment, nut is straightened by rotation, is made
Alignment nut driving screw rod horizontal sliding is to drive the second grip slipper to slide to the direction far from the first grip slipper, thus by arch wire
It is straightened, arch wire is made to keep straightened condition, structure is simple, convenient for manual operation.
Preferably, the alignment component is electric telescopic rod or Pneumatic extension cylinder or hydraulically extensible cylinder.
It is arranged in this way, by electric telescopic rod or Pneumatic extension cylinder or hydraulically extensible cylinder, reaches driving arch wire clamping
The purpose of seat sliding, convenient for being straightened to arch wire, alignment is convenient.
Compared with the existing technology, the present invention achieves beneficial technical effect:
1, arch wire is fixed in mounting disc, and bracket is placed on arch wire, mounting disc rotation is driven by driving assembly,
At heeling condition after rotating arch wire with mounting disc by horizontality, user when bracket has just started to slide relative to arch wire,
By the angle of instruction component record mounting disc rotation and the tangent value of this corresponding angle value, arch wire and bracket maximum static friction
Coefficient, measurement is convenient, and structure is simple.
2, by the way that arch wire to be placed in groove, and arch wire is clamped by driving screw driving clamping square, convenient for folder
Hold arch wire.
3, it is obtained by position of the position sensor to bracket, bracket has just been taken place in real time instead of living human eye
The movement of sliding is determined, the accuracy of measurement is improved.
4, by setting alignment component, so that arch wire is kept straightened condition before measuring, improve the accuracy of measurement.
5, by setting angular transducer, the vertical conversion module of angle-and display module, convenient for obtaining turning for mounting disc
Dynamic angle and the resulting tangent value of conversion, measure more convenient.
6, can Manual test, can also be using from dynamic test, test is convenient.
Detailed description of the invention
Fig. 1 is the three dimensional structure diagram of the embodiment of the present invention one；
Fig. 2 is the enlarged drawing in the portion A in Fig. 1；
Fig. 3 is the enlarged drawing in the portion B in Fig. 1；
Fig. 4 is the schematic diagram of internal structure of arch wire grip slipper in the embodiment of the present invention one；
Fig. 5 is the enlarged drawing in the portion C in Fig. 4；
Fig. 6 is the three dimensional structure diagram of the embodiment of the present invention two；
Fig. 7 is the enlarged drawing in the portion D in Fig. 6；
Fig. 8 is the enlarged drawing in the portion E in Fig. 6；
Fig. 9 is the working state schematic representation that the embodiment of the present invention two is in measurement；
Figure 10 is the three dimensional structure diagram of the embodiment of the present invention four.
Wherein, the technical characteristic that each appended drawing reference is referred to is as follows:
1, pedestal；2, component is leveled；201, lower margin is supported；3, horizontal indicator；301, level meter is laterally indicated；302, it indulges
To instruction level meter；303, universal spirit level；4, support post；5, mounting disc；501, coarse surface layer；6, driving assembly；
601, non-coaxial driving motor；602, friction pulley；603, rocking handle；604, primary speed-down component；6041, the first synchronous pulley；
6042, the second synchronous pulley；6043, synchronous belt；605, double reduction component；6051, reduction gearing；6052, external toothing gear ring；
7, arch wire grip slipper；7001, the first grip slipper；7002, the second grip slipper；701, pedestal；7011, notch；7012, groove；
7013, sliding slot；702, square is clamped；7021, rotation slot；7022, rub striped；703, screw is driven；8, position sensor；
801, light source emitting module；802, receiving module；9, component is indicated；901, display module；902, indicating graduation；9021, angle
Scale；90211, the first scale；90212, the second scale；9022, tangent numerical scale；903, indicator；10, control button；
11, it is straightened component；1101, linear expansion part；1102, screw rod；1103, it is straightened nut；1104, it is straightened pedestal；12, guide post；
1201, limited block；13, anti-tampering mask；1301, slideway；14, arch wire；15, bracket.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments to the present invention
It is further elaborated, but the scope of protection of present invention is not limited to following specific embodiments.
Embodiment one
With reference to Fig. 1, present embodiment discloses a kind of arch wire bracket confficient of static friction measuring devices, including pedestal 1, leveling group
Part 2, horizontal indicator 3, support post 4, mounting disc 5, driving assembly 6, arch wire grip slipper 7 and instruction component 9.
With reference to Fig. 1, the bottom that component 2 is set to pedestal 1 is leveled, in the present embodiment, leveling component 2 includes four screw thread branch
Lower margin 201 is supportted, four threaded support lower margins 201 are distributed in the surrounding of pedestal 1.
With reference to Fig. 1, horizontal indicator 3 is set to the top of pedestal 1, and in the present embodiment, pedestal 1 is rectangle, and level refers to
Show that part 3 includes laterally indicating level meter 301 and longitudinal instruction level meter 302, laterally indicates level meter 301 along the length of pedestal 1
Direction setting is spent, it is longitudinal to indicate that level meter 302 is arranged along the width direction of pedestal 1, it laterally indicates level meter 301 and longitudinally refers to
Show that the equal level of level meter 302 is embedded at the either flush of pedestal 1 Yu pedestal 1, laterally indicates level meter 301 and longitudinal instruction water
Level 302 is cylinder spirit level.
With reference to Fig. 1, support post 4 is vertically arranged at pedestal 1 and is located at the center at 1 top of pedestal.
With reference to Fig. 1, mounting disc 5 is rotatably dispose in support post 4, and the pivot center of mounting disc 5 is horizontally disposed, mounting disc 5
Disk on setting there are two arch wire grip slipper 7, arch wire grip slipper 7 includes the first grip slipper 7001 and the second grip slipper
7002, the first grip slipper 7001 is set to the center of mounting disc 5, and the second grip slipper 7002 is arranged close to the circumferential surface of mounting disc 5.
With reference to Fig. 3, Fig. 4 and Fig. 5, arch wire grip slipper 7 includes pedestal 701, clamps square 702 and driving screw 703,
It is opened up by side to middle part on pedestal 701 and opens up jagged 7011, so that arch wire 14 to be placed into pedestal 701, in pedestal 701
The groove 7012 of arc is provided with positioned at the bottom surface of notch 7011, the extending direction of two arch wire grip slippers, 7 upper groove 7012 is consistent,
The disk of two arch wire grip slippers 7 upper groove 7012 to mounting disc 5 is equidistant, thus when arch wire 14 is placed into groove 7012,
Groove 7012 can carry out auxiliary positioning, and arch wire 14 is parallel with the disk of mounting disc 5, reduce the arch wire 14 in clamping process and water occurs
Flat shaking, driving screw 703 are threadedly coupled with pedestal 701, drive the setting of the end of screw 703 in the form of annular discs, clamping side
The top of block 702 offers the rotation slot 7021 rotated for driving screw 703, and driving screw 703 can phase in rotation slot 7021
It keeps for the rotation of clamping square 702 and during driving screw 703 is gone up and down relative to pedestal 701 connecting with clamping square 702
It connects, the top surface in pedestal 701 positioned at notch 7011 offers sliding slot 7013, and clamping square 702 is along the chute above and below 7013 inner wall
Sliding.
With reference to Fig. 4 and Fig. 5, the surface for clamping square 702 towards groove 7012 is provided with friction striped 7022, and rub striped
7022 is vertical with the extending direction of groove 7012, and friction striped 7022 can increase clamping square 702 to the active force of arch wire 14, mentions
Clamping effect of the height to arch wire 14.
With reference to Fig. 1 and Fig. 2, driving assembly 6 is set to support post 4 and mounting disc 5 is driven to rotate, and driving assembly 6 wraps
Rocking handle 603, deceleration transmission component are included, deceleration transmission component includes primary speed-down component 604 and double reduction component 605；
With reference to Fig. 1 and Fig. 2, primary speed-down component 604 is synchronous pulley group, and synchronous pulley group includes the first synchronous pulley
6041, the second synchronous pulley 6042 and synchronous belt 6043, the number of teeth of the first synchronous pulley 6041 is less than the second synchronous pulley
6042, the gear ratio of the first synchronous pulley 6041 and the second synchronous pulley 6042 is 1:12, and the rotation of the first synchronous pulley 6041 is set
It is placed on pedestal 1；
With reference to Fig. 1 and Fig. 2, double reduction component 605 includes reduction gearing 6051 and external toothing gear ring 6052, this reality
It applies in example, 6052 fixing sleeve of external toothing gear ring is set to the outer of 5 circumference of mounting disc and engages with reduction gearing 6051, reduction gearing
6051 number of teeth is less than external toothing gear ring 6052, and the gear ratio of reduction gearing 6051 and external toothing gear ring 6052 is 1:120, and second
Synchronous pulley 6042 is coaxial fixed with reduction gearing 6051, and rocking handle 603 and the first synchronous pulley 6041 are coaxial fixed, by two-stage
After deceleration, when rocking handle 603 turns around, 1/1440 circle of mounting disc rotation, i.e., 0.25 °, in other embodiments, primary speed-down component
604 and the reduction ratio of double reduction component 605 can also be designed according to actual needs.
With reference to Fig. 2, indicate that component 9 includes indicating graduation 902 and indicator 903, indicator 903 is fixed on support post
On 4, indicator 903 is vertically arranged, center of the center line of indicator 903 Jing Guo mounting disc 5, indicator 903 and mounting disc 5
Disk keeps spacing, and when the line of two arch wire grip slippers 7 is when in a horizontal state, indicator 903 is located at the zero of indicating graduation 902
Position position, indicating graduation 902 include angle index 9021 and tangent numerical scale 9022, and each tangent numerical scale 9022 is right
An angle index 9021 is answered, each tangent numerical scale 9022 is corresponded in the disk of mounting disc 5 and marks a numerical value, a corresponding angle
Scale 9021 marks an angle value, and angle index 9021 includes the first scale 90211 and the second scale 90212, the first scale
90211 along angle index 9021 " 0 ° " position side it is uniformly distributed on 1/4 semicircle of mounting disc 5, the second scale 90212 is along angle
The other side for spending scale 9021 " 0 ° " position is uniformly distributed on 1/4 semicircle of mounting disc 5, in the present embodiment, the first scale 90211
With 0.5 °, 1 °, 1.5 °, 2 °, 2.5 ° ... arithmetic progression lay, the first scale 90211 with 0.25 °, 0.75 °, 1.25 °,
1.75 °, 2.25 ° ... arithmetic progression lay.
With reference to Fig. 3, arch wire bracket confficient of static friction measuring device further includes being straightened component 11, in the present embodiment, alignment group
Part 11 includes screw rod 1102 and alignment nut 1103, is provided with alignment pedestal 1104 in the disk of mounting disc 5, screw rod 1102
One end is fixedly connected with the second grip slipper 7002, and the other end passes through alignment pedestal 1104 and is threadedly coupled with alignment nut 1103, spiral shell
Gap is kept between the circumference side and alignment pedestal 1104 of bar 1102, screw rod 1102 is slidably connected with alignment pedestal 1104.
With reference to Fig. 1, the fixed setting of the first grip slipper 7001, the second grip slipper 7002 is slidably connected with mounting disc 5, the second folder
It holds seat 7002 and radially slides center along mounting disc 5.
With reference to Fig. 3, guide post 12 is provided in the disk of mounting disc 5, guide post 12 is arranged radially along mounting disc 5, bow
Silk grip slipper 7 is slidably connected with guide post 12, and 12 end of guide post is provided with limited block 1201, and limited block 1201 and arch wire clamp
Seat 7 is abutted to prevent arch wire grip slipper 7 from sliding from one end of guide post 12.
With reference to Fig. 1 and Fig. 3, arch wire bracket confficient of static friction measuring device further includes anti-tampering mask 13, anti-tampering face
Cover 13 is set in the disk of mounting disc 5, and anti-tampering mask 13 and the disk of mounting disc 5 are slidably connected, and anti-tampering mask 13 is
The transparent shell of rectangle and both ends open offers the slideway 1301 for the sliding of anti-tampering mask 13, slideway on 5 face of mounting disc
1301 is parallel with the glide direction of the second grip slipper 7002.
The use process of the embodiment of the present invention one:
Step 1: before use, pedestal 1 is leveled by leveling component 2；
Step 2: by shaking rocking handle 603, so that the rotation of mounting disc 5 carries out rezero operation, two arch wire grip slippers, 7 line
For horizontality, indicator 903 is located at the null positions of indicating graduation 902；
Step 3: one end of arch wire 14 is placed in the first grip slipper 7001, and by turning the first grip slipper 7001
In driving screw 703, the lower general who has surrendered's arch wire 14 of driving clamping square 702 is fixed on the first grip slipper 7001；
Step 4: bracket 15 is placed on arch wire 14, and bracket 15 is connected with elastic tape or finer wire, by the another of arch wire 14
One end is placed in the second grip slipper 7002, drives screw 703 by adjusting, similar with previous step, by turning the second clamping
Driving screw 703 in seat 7002, the lower general who has surrendered's arch wire 14 of driving clamping square 702 are fixed on the second grip slipper 7002；
Step 5: by rotation alignment nut 1103, so that screw rod 1102 drives the second grip slipper 7002 to far from first
The direction of grip slipper 7001 slides, so that arch wire 14 is straightened, arch wire 14 is made to keep straightened condition；
Step 6: bracket 15 is allocated in the range of the detection of position sensor 8；
Step 7: mobile anti-tampering mask 13, makes anti-tampering mask 13 cover the position where bracket 15, external force pair is reduced
Bracket 15 generates interference, as the mistake of operator is touched；
Step 8: driving mounting disc 5 is rotated by rotation crank 603, arch wire 14 with the rotation of mounting disc 5 and with level
Line generates angle, and user visually observes the state of bracket, when bracket 15 overcomes maximum static friction force just to start relative to arch wire
When 14 sliding, stops rocking handle 603 and rotate, user reads angle index indicated on indicating graduation 902 by indicator 903
9022 value of 9021 values and tangent numerical scale, coefficient of maximum static friction are equal to 9022 value of tangent numerical scale, to obtain most
Big confficient of static friction；
The rotation direction of rocking handle 603 can choose at random, and measure for example, the first scale 90211 may be selected, with installation
The rotation of disk, indicator indicate the first scale 90211, when noticing that bracket is mobile and position after stop operating, where indicator
Setting in two scales adjacent in the first scale 90211 middle position when, repeat above-mentioned second step, after being resetted,
Rocking handle 603 is reversely shaken, is indicated using the second scale 90212, so that data obtained are improved closer to actual value
The precision of measurement；
Where indicator when being located proximate to any scale in the first scale 90211, with the corresponding tangent number of the scale
9022 value of value scale is read, and obtains rough coefficient of maximum static friction.
User can directly read the coefficient of maximum static friction of arch wire and bracket using the device, small-sized convenient for equipment
Change, is conducive to promote the use of.
Embodiment two
In the present embodiment, it is together with one area's otherwise of embodiment based on embodiment:
With reference to Fig. 6 and Fig. 7, driving assembly 6 includes non-coaxial driving motor 601 and friction pulley 602, non-coaxial driving
Motor 601 is fixedly installed on support post 4, and friction pulley 602 and the rotation main shaft of non-coaxial driving motor 601 are coaxially fixed,
The circumference side of mounting disc 5 is provided with coarse surface layer 501, friction pulley 602 be located at the underface of mounting disc 5 and with mounting disc 5
Coarse surface layer 501 is tangent, so that the rotation of friction pulley 602 can drive mounting disc 5 to rotate, in addition, friction pulley 602 can support a part
The weight of mounting disc 5 reduces pressure suffered by the shaft that mounting disc 5 is connect with support post 4, so that the rotation of mounting disc 5 is more
Steadily, in addition, can also reduce mounting disc 5 in rotation because weight distribution is uneven it is possible that shaking phenomenon.
With reference to Fig. 6 and Fig. 8, in the present embodiment, alignment component is linear expansion part 1101, and in the present embodiment, straight line is stretched
Contracting part 1101 is electric telescopic rod, and the shell of electric telescopic rod is fixedly connected with the disk of mounting disc 5, and electric telescopic rod is stretched
End is fixedly connected with the second grip slipper 7002, telescopic direction being arranged radially along mounting disc of electric telescopic rod, in other implementations
In example, linear expansion part 1101 can also be Pneumatic extension cylinder or hydraulically extensible cylinder.
With reference to Fig. 6 and Fig. 8, arch wire bracket confficient of static friction measuring device further includes position sensor 8, position sensor
8 detect and export a trigger signal when position of bracket 15 changes, and non-coaxial driving motor 601 is in response to the trigger signal
Stop operating, in the present embodiment, position sensor 8 be photoelectric sensor, photoelectric sensor include light source emitting module 801 and
Receiving module 802, light source emitting module 801, receiving module 802 are symmetrically disposed on the two sides of two arch wire grip slippers, 7 line, at it
In his embodiment, position sensor 8 can also be CCD camera, and (full name in English: Charge coupled Device, Chinese are complete
Claim: charge coupled cell is properly termed as ccd image sensor).
With reference to Fig. 6, in the present embodiment, instruction component 9 includes angular transducer (not shown) and display module
901, angular transducer is Hall-type angular transducer, and angular transducer is fixedly and coaxially connected with mounting disc 5, display module 901
It is electrically connected with angular transducer with the data-signal of receiving angle sensor and display, is additionally provided with angle-numerical value on pedestal 1
Convert module (not shown), and angle-numerical value conversion module is electrically connected with angular transducer, display module 901, angle
Degree-numerical value conversion module mainly includes computer chip, for by angle calculation, at tangent value, angular transducer to be in response to position
This signal is simultaneously transmitted to display module 901 and angle-numerical value conversion mould by the trigger signal record angle signal of sensor 8
Block.
With reference to Fig. 6, several control buttons 10 are additionally provided on pedestal 1, control button 10 is for controlling non-coaxial driving electricity
The start and stop of machine 601, the opening or closing of display module 901, position sensor 8 open or close.
The use process of the embodiment of the present invention two:
Step 1: before use, pedestal 1 is leveled by leveling component 2；
It is rotated step 2: controlling non-coaxial driving motor 601 by control button 10, so that non-coaxial driving motor 601
Driving mounting disc 5 is rotated and is resetted, and two arch wire grip slippers, 7 line is horizontality；
Step 3: one end of arch wire 14 is placed in the first grip slipper 7001, and by turning the first grip slipper 7001
In driving screw 703, the lower general who has surrendered's arch wire 14 of driving clamping square 702 is fixed on the first grip slipper 7001；
Step 4: bracket 15 is placed on arch wire 14, and connect bracket 15 with elastic tape or finer wire, avoid bracket 15 with
Arch wire 14 is detached from, and the other end of arch wire 14 is placed in the second grip slipper 7002, screw 703 is driven by adjusting, with upper one
Walk similar, by turning the driving screw 703 in the second grip slipper 7002, it is solid which clamps the lower general who has surrendered's arch wire 14 of square 702
Due on the second grip slipper 7002, true service condition can be simulated using elastic tape or finer wire connection bracket 15, makes arch wire
14 reach the use state being closer to bracket 15；
Step 5: drive the second grip slipper 7002 to slide to the direction far from the first grip slipper 7001 by electric pushrod,
To which arch wire 14 to be straightened, arch wire 14 is made to keep straightened condition；
Step 6: position sensor 8 records the first of bracket 15 in the range of bracket 15 is allocated to the detection of position sensor 8
Beginning position and real-time detection bracket 15 position；
Step 7: mobile anti-tampering mask 13, the position (with reference to Fig. 9) where making anti-tampering mask 13 cover bracket 15,
It reduces external force and interference is generated to bracket 15, as the mistake of operator is touched；
Step 8: driving mounting disc 5 to rotate by driving assembly 6, arch wire 14 is produced with the rotation of mounting disc 5 with horizontal line
Raw angle, arch wire 14 is equal to the angle that mounting disc 5 rotates with angle formed by horizontal line, when bracket 15 overcomes maximum static friction force
When just starting to slide relative to arch wire 14, position sensor 8 captures the position variation signal of bracket 15, one triggering letter of output
Number, non-coaxial driving motor 601 stops operating in response to the trigger signal, and angular transducer records the moment mounting disc 5 rotation
Angle, angle value is converted into tangent value, obtained most by the angle signal of angle-numerical value conversion module receiving angle sensor
Big confficient of static friction；
Step 9: angle and the resulting tangent value of the angular transition that display module 901 rotates mounting disc 5 are (i.e. most
Big confficient of static friction) it shows, user can directly read data and record；
It repeats the above-mentioned second to the 9th step and carries out many experiments, resulting data are averaged, it is more accurate to can be obtained
Coefficient of maximum static friction data, product of arch wire 14, bracket 15 is identified and is sieved convenient for laboratory research or using it
Choosing.
Embodiment three
It is based on embodiment two and with two area's otherwise of embodiment, driving assembly 6 is coaxial servo in the present embodiment
Driving motor, coaxial servo drive motor are fixedly installed on the coaxial fixation on support post 4 and with mounting disc 5, Driven by Coaxial
Motor stops operating in response to the trigger signal of position sensor 8.
The use process of the embodiment of the present invention three is similar to the use process of embodiment two, and details are not described herein.
Example IV
With reference to Figure 10, it is based on embodiment two and with two area's otherwise of embodiment, in the present embodiment, horizontal indicator
3 be universal spirit level 303, and universal spirit level 303 is fixedly installed on the center of 1 top surface of pedestal.
The use process of the embodiment of the present invention four is similar to the use process of embodiment two, and details are not described herein.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not constitute any restrictions to invention.
Claims (10)
1. a kind of arch wire bracket confficient of static friction measuring device characterized by comprising
Pedestal；
Component is leveled, the bottom of the pedestal is set to；
Indicator is leveled, is set on the pedestal, is used to indicate whether the pedestal is in horizontality；
Mounting disc is rotatably dispose on the pedestal, the axis horizontal setting of the mounting disc；
Driving assembly is set on the pedestal, for driving mounting disc around own axis；And
It indicates component, is set on the pedestal, be used to indicate the angle of mounting disc rotation and the tangent value of the angle；
There are two arch wire grip slippers, two arch wire grip slippers to be located at the same of the mounting disc for setting in the mounting disc
On radius, the arch wire grip slipper includes:
Pedestal offers the groove for accommodating arch wire；And
Clamping piece is set on the pedestal, and the clamping piece includes:
Square is clamped, is slideably positioned in the pedestal and is located at the top of the groove, the clamping square is towards the groove
Friction striped is provided on surface；And
Screw is driven, is threadedly coupled with the pedestal, the end of the driving screw and the clamping square are rotatablely connected.
2. a kind of arch wire bracket confficient of static friction measuring device according to claim 1, which is characterized in that the key group
Part includes:
Indicating graduation is set to the installation plate wheel edge；And
Indicator is fixedly installed on the pedestal；
The indicating graduation includes angle index and tangent numerical scale, each corresponding angle of the tangent numerical scale
Scale is spent, each tangent numerical scale is corresponded in the disk of the mounting disc and marks a tangent numerical value, a corresponding angle
It spends scale and marks an angle value.
3. a kind of arch wire bracket confficient of static friction measuring device according to claim 1, which is characterized in that the key group
Part includes angular transducer and display module, and angle-numerical value conversion module is additionally provided on the pedestal；
The angular transducer is set to the pedestal and connect with the mounting disc, for measuring and recording turning for mounting disc
Dynamic angle；
The angle-numerical value conversion module, is electrically connected with the angular transducer, is based on the resulting angle of the angular transducer
Degree evidence is converted into tangent value；
The display module is electrically connected with the angular transducer, the angle-numerical value conversion module, surveys for showing
Resulting numerical value after the angle value of amount and conversion.
4. a kind of arch wire bracket confficient of static friction measuring device according to claim 1-3, which is characterized in that also
Including position sensor, it is set in the mounting disc, the position sensor is used to capture the real time position of bracket on arch wire,
The position sensor is photoelectric sensor or CCD camera.
5. a kind of arch wire bracket confficient of static friction measuring device according to claim 1, which is characterized in that the driving group
Part includes deceleration transmission component and rocking handle, and the deceleration transmission component includes primary speed-down component and double reduction component；
Primary speed-down component is synchronous pulley group, and synchronous pulley group includes the first synchronous pulley, the second synchronous pulley and synchronization
Band, less than the second synchronous pulley, the first synchronous pulley is rotatably dispose on the pedestal number of teeth of the first synchronous pulley, and described
One synchronous pulley is coaxially fixed with the rocking handle；
Double reduction component includes reduction gearing and external toothing gear ring, and the external toothing gear ring fixing sleeve is set to the mounting disc
It is outer and engage with the reduction gearing, the number of teeth of the reduction gearing less than external toothing gear ring, second synchronous pulley with subtract
Fast gear is coaxially fixed.
6. a kind of arch wire bracket confficient of static friction measuring device according to claim 1, which is characterized in that the driving group
Part is Driven by Coaxial motor, and the Driven by Coaxial motor is coaxially fixed with the mounting disc.
7. a kind of arch wire bracket confficient of static friction measuring device according to claim 1, which is characterized in that the driving group
Part includes non-coaxial driving motor and friction pulley, and the friction pulley is coaxially fixedly installed on turning for the non-coaxial driving motor
On axis, support post is provided on the pedestal, the non-coaxial driving motor and the support post are fixed and be located at described
The lower section of mounting disc, the mounting disc rotate on the support post and tangent with the friction pulley, the circle of the mounting disc
The coarse surface layer abutted with friction pulley circumference side is provided on all sides.
8. it is a kind of according to claim 1,2,3,5,6 or 7 described in any item arch wire bracket confficient of static friction measuring devices, it is special
Sign is that the arch wire grip slipper includes the first grip slipper and the second grip slipper, and first grip slipper is fixed on the peace
The center of sabot, second grip slipper are arranged by the circumferential surface of the mounting disc, and second grip slipper and the mounting disc are sliding
Connection and the second grip slipper radially sliding along the mounting disc are moved, it is reciprocal that the second grip slipper of driving is provided in the mounting disc
The alignment component of sliding.
9. a kind of arch wire bracket confficient of static friction measuring device according to claim 8, which is characterized in that the alignment group
Part includes screw rod and alignment nut, is provided with alignment pedestal in the disk of the mounting disc, one end of the screw rod with it is described
Second grip slipper is fixedly connected, and the other end passes through the alignment pedestal and connect with alignment nut thread, the screw rod and the school
Straight pedestal is slidably connected.
10. a kind of arch wire bracket confficient of static friction measuring device according to claim 8, which is characterized in that the alignment
Component is electric telescopic rod or Pneumatic extension cylinder or hydraulically extensible cylinder.
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| CN201910016015.XA CN109540783A (en) | 2019-01-08 | 2019-01-08 | A kind of arch wire bracket confficient of static friction measuring device |
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| CN201910016015.XA CN109540783A (en) | 2019-01-08 | 2019-01-08 | A kind of arch wire bracket confficient of static friction measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220307A (en) * | 2020-03-08 | 2020-06-02 | 哈尔滨理工大学 | Orthodontic appliance friction force measuring device and using method |
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