CN205080011U - Just abnormal arch wire resilience measuring apparatu of bend radius adjustable - Google Patents
Just abnormal arch wire resilience measuring apparatu of bend radius adjustable Download PDFInfo
- Publication number
- CN205080011U CN205080011U CN201520868457.4U CN201520868457U CN205080011U CN 205080011 U CN205080011 U CN 205080011U CN 201520868457 U CN201520868457 U CN 201520868457U CN 205080011 U CN205080011 U CN 205080011U
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- CN
- China
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- projecting shaft
- orthodontic bow
- wire
- digital display
- arch wire
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- Withdrawn - After Issue
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Abstract
The utility model discloses a just abnormal arch wire resilience measuring apparatu of bend radius adjustable is become by base, just abnormal arch wire clamping mechanism, just abnormal arch wire clamping mechanism elevating platform, the crooked digital display mechanism group of just abnormal arch wire. The base is the installation benchmark of whole device, and the base is a rectangle piece that has the rectangular channel, and just abnormal arch wire clamping mechanism fixed mounting is on just abnormal arch wire clamping mechanism elevating platform, and just abnormal arch wire clamping mechanism elevating platform fixed mounting is in the rectangular channel position of base, and the crooked digital display mechanism of just abnormal arch wire installs at the base upper surface. Just abnormal arch wire clamping mechanism comprises rectangle piece, inner tube, urceolus, pressure spring, connecting block, hand slider, end cap, the fixtion screw bolt who has circular through -hole, and just abnormal arch wire clamping mechanism elevating platform is become by just abnormal arch wire clamping mechanism backup pad, scissors mechanism and hand lead screw mechanism group, and the crooked digital display mechanism of just abnormal arch wire revolves rotary die, gear a, gear b, h figurate number by the ladder fixed mould that has the projecting shaft, the ladder that has the projecting shaft and shows the handle and constitute.
Description
Technical field
The utility model relates to the adjustable orthodontic bow-wire resilience measuring instrument of a kind of bending radius, bends the processing technology of robot realization without the curved silk of surplus for auxiliary orthodontic bow-wire.
Background technology
At present, people's living standard improves, increasing people pays close attention to oral health, the people carrying out mouth cavity orthodontic correction is also seen everywhere, orthodontic bow-wire is increasing as the necessity demand of mouth cavity orthodontic, the robot for this reason replacing orthodontist to bend orthodontic bow-wire arises at the historic moment, and there is elastic-plastic deformation bending in process in orthodontic bow-wire, particularly when robot bends, curved silk surplus need be provided by rule of thumb to compensate, after unloading, arch wire generation resilience, bending of arch edgewise accuracy is declined, that existing orthodontic bow-wire bends robot and is difficult to overcome and has problem to be solved.
Rarely has the device being directly used in the measurement of angle of orthodontic bow-wire bending springback at present, only retrieve a patent 201210398448.4 about orthodontic arch filament bending springback angel measuring instrument, this invention needs when measuring orthodontic bow-wire differently curved radius rebound performance repeatedly to change suitable go for a stroll mould and crank handle, complex operation, use very inconvenient, and this invention adopts crank handle directly to apply to bend power to orthodontic bow-wire, belong to the curved method that pushes away that tradition bends in mode and bend orthodontic bow-wire, bend in process, promote orthodontic bow-wire and rotate the crank handle and orthodontic bow-wire generation relative sliding that rotate around the strong point, namely certainly will there is the one side generation certain influence of tensile deformation to orthodontic bow-wire outside surface in BENDING PROCESS, thus affect the free resilience of orthodontic bow-wire, affect the measurement of orthodontic bow-wire spring back angle.
Summary of the invention
The purpose of this utility model is the orthodontic bow-wire resilience measuring instrument providing a kind of bending radius adjustable, bends robot realize without surplus orthodontic bow-wire bending process technique with auxiliary orthodontic bow-wire, improves robot orthodontic bow-wire and bends precision.
The technical scheme that the utility model technical solution problem adopts is:
The orthodontic bow-wire resilience measuring instrument that bending radius is adjustable, is bent digital display mechanism formed by pedestal, orthodontic bow-wire clamp system, orthodontic bow-wire clamp system lifting table, orthodontic bow-wire; Described pedestal entirety is a rectangular block with rectangular channel; described orthodontic bow-wire clamp system is fixedly mounted on orthodontic bow-wire clamp system lifting table; described orthodontic bow-wire clamp system lifting table is fixedly mounted on the rectangular channel position of described pedestal, and described orthodontic bow-wire bends digital display mechanism and is arranged on described pedestal rectangular block upper surface;
As preferably, described orthodontic bow-wire clamp system forms by with the rectangular block of manhole, inner core, urceolus, holddown spring, contiguous block, hand slide block, plug, fixed bolt, described urceolus is arranged on two rectangular guideway grooves of the described rectangular block with manhole, the fixed orifice a of the rectangular block with manhole that the side that the conical through-hole opening of described urceolus is large is described dorsad, one end that one end of described contiguous block is little with the conical through-hole opening of described urceolus is fixedly connected with, described hand slide block has two, the long rectangular block of two described hand slide blocks to be fixed in the rectangular through-hole offered described contiguous block side from both sides through the described hand slide block guide rail groove offered with the rectangular block both sides of manhole, the other end of described contiguous block is fixedly connected with the fixing slide block of described holddown spring one end, the fixing slide block at described holddown spring two ends is arranged on two rectangular guideway grooves of the described rectangular block with manhole, described plug is fixedly connected with the other end of described holddown spring, described inner core is deeply described with the rectangular block of manhole from described urceolus end with externally threaded one end, through described urceolus, contiguous block, holddown spring adopts with described plug and is threaded, described inner core paw end is fan-shaped stepped to be stuck in outside described urceolus, fixed orifice b on described plug and described fixed orifice a is with bolts.
As preferably, described orthodontic bow-wire clamp system lifting table is made up of orthodontic bow-wire clamp system back up pad, scissors mechanism and hand screw mechanism; Described orthodontic bow-wire clamp system back up pad is arranged on above described scissors mechanism two pairs of scissors rods, one end of scissors rod below described scissors mechanism is fixedly mounted on inside the rectangular channel of described pedestal, described hand screw mechanism is fixedly mounted on the outside of the rectangular channel of described pedestal, and the other end of the scissors rod below described scissors mechanism scissors rod is fixedly mounted on the slide block of described hand screw mechanism.
As preferably, described orthodontic bow-wire bends digital display mechanism and is made up of the ladder fixed die with projecting shaft, the ladder rotating mould with projecting shaft, gear a, gear b, H-shaped digital display handle, the described ladder fixed die with projecting shaft is fixed in the upper surface of described pedestal rectangular block, the projecting shaft of the described ladder fixed die with projecting shaft penetrates from the rotation center through hole bottom face of described H-shaped digital display handle and extend out to rotation center hold upper surface by gear a, the described ladder fixed die with projecting shaft adopts pin to be connected with described H-shaped digital display handle, the projecting shaft of the described ladder fixed die with projecting shaft adopts key to be connected with described gear a, the projecting shaft of the described ladder rotating mould with projecting shaft to penetrate through hole bottom face from another of described H-shaped digital display handle and extend out to described H-shaped digital display handle upper surface by gear b, the described ladder rotating mould with projecting shaft adopts pin to be connected with described H-shaped digital display handle, the projecting shaft of the described ladder rotating mould with projecting shaft adopts key to be connected with described gear b, described gear a engages with described gear b, the ladder rotating mould rotation with projecting shaft of the described ladder rotating mould with projecting shaft described in while driving orthodontic bow-wire strip winding to have the ladder fixed die of projecting shaft to rotate, adopts roll bending to bend mode and carries out rebound performance measurement to orthodontic bow-wire.
Of the present utility model have following technique effect and advantage:
1. drive urceolus motion control inner core finger to open by slip hand slide block, control inner core finger by holddown spring reset urceolus closed, realize the clamping of orthodontic bow-wire, compact conformation, easy to operate, be convenient to change orthodontic bow-wire;
2. control scissors mechanism by hand screw mechanism to stretch, realize orthodontic bow-wire clamp system lifting table and be steadily elevated, pure physical construction, orthodontic bow-wire clamp system lifting table uniform force, make orthodontic bow-wire relative orthodontic bow-wire digital display bending mechanism maintenance level.
3. engaged by gear a, gear b, rotation while ensureing have the ladder fixed die of projecting shaft to rotate with the ladder rotating mould strip winding of projecting shaft, realizes rolling and bends orthodontic bow-wire;
4. control scissors mechanism lifting by hand screw mechanism, thus regulate orthodontic bow-wire relative to the relative position of four cylinder ladders of the ladder fixed die with projecting shaft and four cylinder ladders with the ladder rotating mould of projecting shaft, regulate the bending radius of orthodontic bow-wire.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction schematic diagram;
Fig. 2 is the utility model orthodontic bow-wire clamp system explosive view;
Fig. 3 is the utility model orthodontic bow-wire clamp system wiring layout;
Fig. 4 is the utility model orthodontic bow-wire clamp system lifting table structural drawing;
Fig. 5 is that the utility model orthodontic bow-wire bends digital display mechanism explosive view;
Fig. 6 is that the utility model bends orthodontic bow-wire schematic diagram.
In figure, 1-pedestal, 2-orthodontic bow-wire clamp system back up pad, 3-is with the rectangular block of manhole, 4-fixed bolt, 5-orthodontic bow-wire, 6-hand slide block, 7-h figurate number shows handle, and 8-gear b, 9-are with the ladder rotating mould of projecting shaft, 10-with the ladder fixed die of projecting shaft, 11-gear a, 12-inner core, 13-urceolus, 14-contiguous block, 15-holddown spring, 16-plug, 17-scissors mechanism, the hand screw mechanism of 18-.
Embodiment
Concrete structure of the present utility model and embodiment is further illustrated below in conjunction with accompanying drawing.
See Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, the orthodontic bow-wire resilience measuring instrument that a kind of bending radius is adjustable is bent digital display mechanism formed by pedestal 1, orthodontic bow-wire clamp system, orthodontic bow-wire clamp system lifting table, orthodontic bow-wire.Pedestal 1 is as the reference for installation of whole device, pedestal entirety is a rectangular block with rectangular channel, orthodontic bow-wire clamp system is fixedly mounted on orthodontic bow-wire clamp system lifting table, orthodontic bow-wire clamp system lifting table is fixedly mounted on the rectangular channel position of described pedestal, and orthodontic bow-wire bends digital display mechanism and is arranged on described pedestal rectangular block upper surface.
Orthodontic bow-wire clamp system forms by with the rectangular block 3 of manhole, inner core 12, urceolus 13, holddown spring 15, contiguous block 14, hand slide block 6, plug 16, fixed bolt 4;
Fixed orifice a3-3 is offered in one end with the rectangular block 3 of manhole, rectangular block 3 inside with manhole offers left and right two strip guide-track groove 3-1s with one end end face of fixed orifice a3-3 along manhole axis direction from rectangular block, two strip guide-track groove 3-1 do not run through whole rectangular block, hand slide block guide rail groove 3-2 is offered in both sides with the rectangular block 3 of manhole, and hand slide block guide rail groove 3-2 and described strip guide-track groove 3-1 communicates;
One end of inner core 12 is three finger 12-1 opened laterally and finger tips has fan-shaped block 12-2, and the other end of inner core 12 is hollow cylinder and has external thread 12-3 bottom hollow cylinder;
Urceolus 13 outside is the cylindrical piece with left and right rectangular guideway, and the external diameter of urceolus 13 cylindrical piece equals the external diameter of the described fan-shaped stepped 12-2 of inner core 12 finger tips, and described urceolus 13 inside is conical through-hole 13-1;
Slide block is fixed with holddown spring in the two ends of holddown spring 15;
Contiguous block 14 is the cylindrical piece with offering manhole, and rectangular through-hole 14-1 is offered in the side of contiguous block 14;
Hand slide block 6 has two, and hand slide block 6 profile is a long and short two orthogonal rectangular block, and the outside surface of the short rectangular block of hand slide block has friction line;
Plug 16 is the cylinder with manhole, has internal thread 16-2 in the manhole of plug 16, and fixed orifice b16-1 is offered in plug side;
Urceolus 13 is arranged on two rectangular guideway groove 3-1 of the described rectangular block 3 with manhole, the little side of the conical through-hole 13-1 opening of urceolus 13 and the fixed orifice a3-3 with the rectangular block 3 of manhole are in the same way, one end that one end of contiguous block 14 is little with the conical through-hole opening of urceolus 13 is fixedly connected with, hand slide block 6 has two, the long rectangular block of two hand slide blocks 6 to be fixed in the rectangular through-hole 14-1 that offers contiguous block 14 side from both sides through the hand slide block guide rail groove 3-2 that rectangular block 3 both sides with manhole are offered, the other end of contiguous block 14 is fixedly connected with the fixing slide block of holddown spring 15 one end, the fixing slide block at holddown spring 15 two ends is arranged on two rectangular guideway groove 3-1 with the rectangular block 3 of manhole, plug 16 is fixedly connected with the other end of holddown spring 15, inner core 12 gos deep into the rectangular block 3 of manhole from urceolus 13 end with one end of external thread 12-3, through urceolus 13, contiguous block 14, holddown spring 15 adopts with plug 16 and is threaded, inner core 12 is pointed the fan-shaped stepped 12-2 of 12-1 end and is stuck in outside urceolus 13, fixed orifice b16-1 on plug 16 is connected by fixed bolt 4 with fixed orifice a3-3.
Orthodontic bow-wire clamp system lifting table is made up of orthodontic bow-wire clamp system back up pad 2, scissors mechanism 17 and hand screw mechanism 18;
Orthodontic bow-wire clamp system back up pad 2 is arranged on above scissors mechanism 17 two pairs of scissors rods, one end of scissors rod below scissors mechanism 17 is fixedly mounted on inside the rectangular channel of pedestal, hand screw mechanism 18 is fixedly mounted on the outside of the rectangular channel of pedestal 1, and the other end of the scissors rod below scissors mechanism 17 scissors rod is fixedly mounted on the slide block of hand screw mechanism 18.
Orthodontic bow-wire bends digital display mechanism and is made up of the ladder fixed die 10 with projecting shaft, the ladder rotating mould 9 with projecting shaft, gear a11, gear b8, H-shaped digital display handle 7;
Ladder fixed die 10 with projecting shaft is made up of four cylindrical piece ladders, four described cylindrical pieces from top to bottom diameter increase successively, tangent and the same plane in the side of four described cylindrical pieces and be positioned at the same side of plane, described four cylindrical pieces cylindrical piece topmost has projecting shaft upwards, described projecting shaft is offered keyway 10-1;
Ladder rotating mould 11 with projecting shaft is made up of four cylindrical piece ladders, four described cylindrical pieces from top to bottom diameter once reduce, tangent and the same plane in the side of four described cylindrical pieces and be positioned at the same side of plane, described four cylindrical pieces cylindrical piece topmost has projecting shaft upwards, described projecting shaft is offered keyway 9-1;
Gear a11 offers keyway, gear b8 offers keyway, gear a11 and gear b8 equal and opposite in direction;
H-shaped digital display handle 7 entirety becomes letter " h " shape of small letter, digital display handle is offered two pairs of through holes, wherein a pair through hole is as the rotation center through hole 7-1 of H-shaped digital display handle, another is to through hole and the centre distance size of H-shaped digital display rotatable handle central through hole and the reference diameter equal and opposite in direction of gear a11 or gear b8, with the digital display meter 7-2 measuring the anglec of rotation on digital display handle 7;
Ladder fixed die 10 with projecting shaft is fixed in the upper surface of pedestal 1 rectangular block, to penetrate from the rotation center through hole 7-1 bottom face of H-shaped digital display handle 7 with the projecting shaft of the ladder fixed die 10 of projecting shaft and extend out to rotation center through hole 7-1 upper surface by gear a11, ladder fixed die 10 with projecting shaft adopts pin to be connected with H-shaped digital display handle 7, projecting shaft with the ladder fixed die 10 of projecting shaft adopts key to be connected with gear a11, from another of H-shaped digital display handle 7 through hole bottom face to be penetrated with the projecting shaft of the ladder rotating mould 9 of projecting shaft and extend out to H-shaped digital display handle 7 upper surface by gear b8, ladder rotating mould 9 with projecting shaft adopts pin to be connected with H-shaped digital display handle 7, projecting shaft with the ladder rotating mould 9 of projecting shaft adopts key to be connected with gear b8, gear a11 engages with gear b8, projecting shaft with the ladder fixed die 10 of projecting shaft and the distance of shaft centers of the projecting shaft of the ladder rotating mould 9 with projecting shaft are the reference diameter size of gear a11 or gear b8, H-shaped digital display handle 7 is when the projecting shaft central rotation of rotation center through hole 7-1 namely with the ladder fixed die 10 of projecting shaft, H-shaped digital display handle 7 driven gear b8 strip winding has the ladder fixed die 10 of projecting shaft to revolve round the sun, gear b8 rotation under the effect of gear a11 simultaneously, thus have the ladder fixed die 10 of projecting shaft revolve round the sun and carry out rotation simultaneously with ladder rotating mould 9 strip winding of projecting shaft, side with the ladder rotating mould 9 of projecting shaft is invariable with the side clearance of the ladder fixed die 10 with projecting shaft.
Composition graphs 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 the utility model process are in use as follows:
First, slide backward hand slide block 6, Compress Spring 15 is shunk, urceolus 13 is driven to move backward by contiguous block 14, the finger 12-1 of inner core 12 is opened, orthodontic bow-wire 5 is passed orthodontic bow-wire clamp system from plug 16 end, and stretches out from the gap of the ladder fixed die 10 with projecting shaft and the ladder rotating mould 9 with projecting shaft, then discharge hand slide block 6, Compress Spring 15 resets, and promotion contiguous block 14 and urceolus travel forward, and the finger 12-1 of inner core 12 is closed, clamping orthodontic bow-wire 5, then regulate scissors mechanism 17 by hand screw mechanism 18, make orthodontic bow-wire clamp system back up pad arrive specified altitude assignment, select suitable bending position, finally, H-shaped digital display handle 7 is reset, rotate H-shaped digital display handle 7, driven gear b8 strip winding has the ladder fixed die 10 of projecting shaft to revolve round the sun, gear b8 rotation under the effect of gear a11 simultaneously, ladder rotating mould 9 strip winding with projecting shaft is driven to have the ladder fixed die 10 of projecting shaft revolve round the sun and carry out rotation simultaneously, carry out roll bending to orthodontic bow-wire 5 to bend, bend to angle on target, record bends angle, reset H-shaped digital display handle 7 again, rotate backward H-shaped digital display handle 7, make the free resilience of orthodontic bow-wire 5, till no longer resilience, the size of angle shown by H-shaped digital display handle 7 and spring back angle equal and opposite in direction.
Claims (4)
1. the orthodontic bow-wire resilience measuring instrument that bending radius is adjustable, is bent digital display mechanism formed by pedestal, orthodontic bow-wire clamp system, orthodontic bow-wire clamp system lifting table, orthodontic bow-wire; Described pedestal entirety is a rectangular block with rectangular channel, described orthodontic bow-wire clamp system is fixedly mounted on orthodontic bow-wire clamp system lifting table, described orthodontic bow-wire clamp system lifting table is fixedly mounted on the rectangular channel position of described pedestal, and described orthodontic bow-wire bends digital display mechanism and is arranged on described pedestal rectangular block upper surface.
2. according to the orthodontic bow-wire resilience measuring instrument that bending radius a kind of described in claim 1 is adjustable, it is characterized in that: described orthodontic bow-wire clamp system forms by with the rectangular block of manhole, inner core, urceolus, holddown spring, contiguous block, hand slide block, plug, fixed bolt, described urceolus is arranged on two rectangular guideway grooves of the described rectangular block with manhole, the fixed orifice a of the rectangular block with manhole that the side that the conical through-hole opening of described urceolus is large is described dorsad, one end that one end of described contiguous block is little with the conical through-hole opening of described urceolus is fixedly connected with, described hand slide block has two, the long rectangular block of two described hand slide blocks to be fixed in the rectangular through-hole offered described contiguous block side from both sides through the described hand slide block guide rail groove offered with the rectangular block both sides of manhole, the other end of described contiguous block is fixedly connected with the fixing slide block of described holddown spring one end, the fixing slide block at described holddown spring two ends is arranged on two rectangular guideway grooves of the described rectangular block with manhole, described plug is fixedly connected with the other end of described holddown spring, described inner core is deeply described with the rectangular block of manhole from described urceolus end with externally threaded one end, through described urceolus, contiguous block, holddown spring adopts with described plug and is threaded, described inner core paw end is fan-shaped stepped to be stuck in outside described urceolus, fixed orifice b on described plug and described fixed orifice a is with bolts.
3. according to the orthodontic bow-wire resilience measuring instrument that bending radius a kind of described in claim 1 is adjustable, it is characterized in that: described orthodontic bow-wire clamp system lifting table is made up of orthodontic bow-wire clamp system back up pad, scissors mechanism and hand screw mechanism; Described orthodontic bow-wire clamp system back up pad is arranged on above described scissors mechanism two pairs of scissors rods, one end of scissors rod below described scissors mechanism is fixedly mounted on inside the rectangular channel of described pedestal, described hand screw mechanism is fixedly mounted on the outside of the rectangular channel of described pedestal, and the other end of the scissors rod below described scissors mechanism scissors rod is fixedly mounted on the slide block of described hand screw mechanism.
4. according to the orthodontic bow-wire resilience measuring instrument that bending radius a kind of described in claim 1 is adjustable, it is characterized in that: described orthodontic bow-wire bends digital display mechanism and is made up of the ladder fixed die with projecting shaft, the ladder rotating mould with projecting shaft, gear a, gear b, H-shaped digital display handle, the described ladder fixed die with projecting shaft is fixed in the upper surface of described pedestal rectangular block, the projecting shaft of the described ladder fixed die with projecting shaft penetrates from the rotation center through hole bottom face of described H-shaped digital display handle and extend out to rotation center hold upper surface by gear a, the described ladder fixed die with projecting shaft adopts pin to be connected with described H-shaped digital display handle, the projecting shaft of the described ladder fixed die with projecting shaft adopts key to be connected with described gear a, the projecting shaft of the described ladder rotating mould with projecting shaft to penetrate through hole bottom face from another of described H-shaped digital display handle and extend out to described H-shaped digital display handle upper surface by gear b, the described ladder rotating mould with projecting shaft adopts pin to be connected with described H-shaped digital display handle, the projecting shaft of the described ladder rotating mould with projecting shaft adopts key to be connected with described gear b, described gear a engages with described gear b, the ladder rotating mould rotation with projecting shaft of the described ladder rotating mould with projecting shaft described in while driving orthodontic bow-wire strip winding to have the ladder fixed die of projecting shaft to rotate, adopts roll bending to bend mode and carries out rebound performance measurement to orthodontic bow-wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868457.4U CN205080011U (en) | 2015-11-04 | 2015-11-04 | Just abnormal arch wire resilience measuring apparatu of bend radius adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520868457.4U CN205080011U (en) | 2015-11-04 | 2015-11-04 | Just abnormal arch wire resilience measuring apparatu of bend radius adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205080011U true CN205080011U (en) | 2016-03-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520868457.4U Withdrawn - After Issue CN205080011U (en) | 2015-11-04 | 2015-11-04 | Just abnormal arch wire resilience measuring apparatu of bend radius adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205080011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334114A (en) * | 2015-11-04 | 2016-02-17 | 哈尔滨理工大学 | Orthodontics arch-wire rebounding measurement instrument with bending radius adjustable |
| CN108982353A (en) * | 2018-08-27 | 2018-12-11 | 浙江工业大学 | A kind of non-smooth surface frictional resistance test device |
-
2015
- 2015-11-04 CN CN201520868457.4U patent/CN205080011U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334114A (en) * | 2015-11-04 | 2016-02-17 | 哈尔滨理工大学 | Orthodontics arch-wire rebounding measurement instrument with bending radius adjustable |
| CN108982353A (en) * | 2018-08-27 | 2018-12-11 | 浙江工业大学 | A kind of non-smooth surface frictional resistance test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160309 Effective date of abandoning: 20170908 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160309 Effective date of abandoning: 20170915 |