CN206979606U - Teeth polisher with novel polishing cup and repeatable rotating protects tooth bent angle - Google Patents

Abstract

A kind of teeth polisher shield tooth bent angle with novel polishing cup and repeatable rotating, including polishing rotor and drive component, polishing rotor include cup and base, and cup inside spin is provided with several first blades, and it is raised that cup body outer wall has been evenly arranged several rhombuses；The rear portion of the base offers transmission groove, and formed with transmission curved surface in transmission groove, and center offers pilot hole；Transmission curved surface has multiple convex portions and recess, regular fluctuating；Drive component includes live spindle, and its upper end is arranged in pilot hole, and upper end is provided with drive head, and drive head is meshed, to reach the drive connection of live spindle and polishing rotor formed with driving surface with transmission curved surface；When the driving surface of drive head touches convex portion and the recess of transmission curved surface successively, polishing rotor is rotated forward and reversely rotated successively.Control of the utility model to antiscuffing paste is more stable, and polishing effect is more preferable, and caloric value is low, it is possible to reduce the possibility of injury tooth body soft tissue, and production cost is low.

Description

Teeth polisher with novel polishing cup and repeatable rotating protects tooth bent angle

Technical field

It the utility model is related to dental care polishing field, and in particular to one kind has improved structure polishing rotor and polishing rotor The teeth polisher shield tooth corner structure of repeatable rotating.

Background technology

Teeth polisher is mainly used in prevention, treatment and the cleaning to dental surface, polishing to dental disorder（It is equipped with Special antiscuffing paste）Its primary treatment head --- shield tooth bent angle（Prophy Angle）And hand-hold type power portion --- at a high speed Dentistry headstock（Mobile phone）Two parts form.

The polishing rotor of shield tooth bent angle contacts and acts on dental surface, plays a part of the polishing that cleans one's teeth.The polishing rotor is by throwing Light cup（Rubber cup）Formed with both fixing axles, wherein the polishing rotor（Rubber cup）Injection is fixed on the front end face of fixing axle On, fixing axle base is positioned inside shield tooth bent angle；The end of the fixing axle base formed with angular bevel gear, with tooth The angular bevel gear of the driveshaft end of polishing machine is formed a pair, has the function that to transmit revolving force.

General rotational structure shield tooth bent angle drive shaft delivers axially equidirectional continuous rotation fortune to fixing axle as described above It is dynamic.In general, axial-rotation pattern can have a variety of, most common to have equidirectional continuous rotation and the rotation of reciprocating rule.

Conventional reciprocating formula rotational structure generally has the stud or cunning of the eccentric setting between drive shaft and driven shaft Block and conduit, by the reciprocating motion of stud or sliding block in the channel, so as to which the equidirectional of drive shaft be continuously converted into The reciprocating rotation of driven shaft.Such as Chinese patent 03224896.2, the bias that its transmission mechanism is included in brush bar turn Axle, is sheathed on guide shaft and the sliding block driven by eccentrically weighted shaft and one are by slider-actuated and around the rotation of brush head axis reciprocating rotation Rotor.Sliding block offers a groove close to one end of eccentric drive shaft, and its other end is provided with driving cog.The top position of eccentrically weighted shaft In in groove, driving cog gnaws conjunction with the gear being fixed on gyrator.When eccentrically weighted shaft rotates under motor driving, sliding block Moved reciprocatingly simultaneously with gyrator, so as to drive bristle motion fixed thereon, to reach the effect of cleaning tooth.

Technical problems to be solved are as follows：

First, the reciprocating rotation of polishing rotor is realized on shield tooth bent angle, so as to reach more preferable therapeutic effect, and is reduced To the burden of rotating element, the requirement to material is reduced, so as to reduce production cost；

2nd, because teeth polisher is generally driven with higher speed, stud or pin in conventional reciprocating formula rotational structure The risk of fracture during use be present.In addition, coordinate firmly good stud or sliding block and conduit to be formed, drive shaft and The manufacture of driven shaft becomes relatively more complicated difficulty；

3rd, the rotation of drive shaft is stopped first when needing to allow reciprocating rotation to stop in conventional reciprocating formula rotational structure, Drive shaft forces driven shaft relative to being locked in the housing where drive shaft and driven shaft.Generally, it is this locking to housing and from Moving axis is applied with larger stress.

In addition, United States Patent (USP) US 7255559B2（Disposable dental prophy angle with secure retention mechanism）To we show a kind of relatively conventional disposable shield tooth bent angle, polishing rotor contact therein And dental surface is acted on, play a part of the polishing that cleans one's teeth.The polishing rotor is by polishing rotor（Rubber cup）With fixing axle two parts structure Into wherein the polishing rotor（Rubber cup）Injection is fixed on the front end face of fixing axle, and fixing axle base is positioned at shield tooth bent angle It is internal；The end of the fixing axle base is formed with angular bevel gear, with the power output shaft end with polishing of teeth hand set Angular bevel gear form a pair, have the function that transmit revolving force.

The polishing rotor of the prior art（Rubber cup）Generally include to be molded the first end being fixed in fixing axle and be used for Receive and discharge antiscuffing paste to clean the second end of tooth.As shown in Figures 1 to 3, the second end is cup-shaped, and anterior formed of cup receives The internal cavity 21 of antiscuffing paste, cavity 21 extend towards the front end of polishing rotor, are extended internally on the inwall of polishing rotor from cup edge Into multiple ribs 22, and symmetrical blade 23 is provided with, blade 23 extends in the plane through polishing rotor rotation axis.To After antiscuffing paste is added in cavity 1, the front portion of cup is pressed against on tooth by operator, applies pressure and rotation on tooth surfaces Move, the removal that friction promotes dental plaque, calculus and spot occurs between the grinding agent and dental surface in lotion.

The prior art has the following disadvantages：

First, the extend internally structure of rib and symmetrical blading of traditional polishing rotor makes polishing rotor can effective cleaning tooth table Face, but they can not provide the cleaning to gum and the gum seam on tooth periphery.Gum is the gingiva tissue for surrounding tooth neck A part, gum crack are that the base portion of gum eruption tooth is slightly less than a part for gum base surface.And effective tooth Cleaning needs the bacterial plaque removed from the gum seam of dental surface, gum and tooth periphery, spot and microorganism；

2nd, begun to before antiscuffing paste contact tooth of the rotation of polishing rotor generally in cup.When polishing rotor rotates, Centrifugal force is perpendicular to rotation axis, and due to the outward-dipping design of wall of cup, so the component of the centrifugal force will be along polishing rotor The inner surface of side wall is directed to outside polishing rotor, the antiscuffing paste in cup by centrifugal force pulls out of cup to cup external migration.It is existing The line of the blade of structure, its root and wall of cup with polishing rotor axis at grade, therefore antiscuffing paste can not be suppressed Migration.Cause antiscuffing paste to be often prematurely released from cup, waste lotion；

Three at the same the antiscuffing paste that is excessively released cause the pollution of operating environment, add the discomfort of patient, make patient Excessive antiscuffing paste is absorbed in mouthful；Also operating process efficiency has been had a strong impact on, dentist must not repeatedly fill antiscuffing paste To carry out treatment operation.

Therefore, how to solve above-mentioned the shortcomings of the prior art, become as the class to be researched and solved of the utility model Topic.

The content of the invention

The purpose of this utility model is to provide a kind of teeth polisher shield with novel polishing cup and repeatable rotating Tooth bent angle.

To reach above-mentioned purpose, the technical solution adopted in the utility model is：

A kind of teeth polisher shield tooth bent angle with novel polishing cup and repeatable rotating, including polishing rotor and driving Component, the polishing rotor are connected with the drive component, and the motor output shaft of the drive component and teeth polisher passes Dynamic connection；

The polishing rotor includes cup and base, and the cup is fixed on the front end face of base, and the rear portion of base then rotates It is arranged in the housing of shield tooth bent angle；The front end of the cup is cleaning end, and the inside of cup offers a cavity, the cavity court Extended to the front end of cup, and the front portion of cavity is opening；Spiral is provided with several first blades, structure on the inwall of the cup Connecting line into each first blade and cup extends spirally on the length direction of cup, and the surface of each first blade is in Arc-shaped；It is raised that several rhombuses have been evenly arranged on the outer wall of the cup, rhombus is raised include four faces being obliquely installed with An and summit；Each rhombus projection is along longitudinal direction and is spaced laterally apart, and forms a network structure staggeredly；

Wherein, the rear portion of the base offers a transmission groove, and the radial direction of the transmission groove towards base opens up；It is described The center of transmission groove offers a pilot hole, and the dress is surrounded formed with a transmission curved surface, the transmission curved surface in transmission groove The circumferentially continuous fluctuating of distribution, there is two to six convex portions and the recess with convex portion equivalent, the shape of each convex portion is identical, each recessed The shape in portion is also identical, and each convex portion and the recess are arranged alternately, and forms the transmission regular fluctuating of curved surface；

The drive component includes a live spindle, and the final drive of the live spindle is connected to the motor output shaft, The upper end of live spindle is stretched into the transmission groove, and is arranged in the pilot hole of transmission groove, and the upper end pair Transmission groove is answered to be provided with a drive head, the drive head is arranged at the axle center side of the live spindle, and is driven formed with one Dynamic surface, the driving surface is in arc-shaped, and tiltedly setting outwardly axially upwards along live spindle；The driving table of the drive head Face is meshed with the transmission curved surface of the transmission groove, to reach the drive connection of live spindle and polishing rotor；

Wherein, the width of the drive head is adapted to the width of the transmission groove, is formed when drive head rotates The polishing rotor will be driven to rotate；The height of the drive head and the depth adaptation of the transmission groove, form drive head Drive polishing rotor rotation while by polishing rotor radially it is carried out it is spacing；

Wherein, when the driving surface of drive head touches convex portion and the recess of the transmission curved surface successively, structure Rotated forward and reversely rotated successively into the polishing rotor.

Relevant content in above-mentioned technical proposal is explained as follows：

1. in such scheme, " shape of each convex portion is identical, and the shape of each recess is also identical ", forming polishing rotor just Turn, reversion is angularly.

2. in such scheme, described " upper end of live spindle is stretched into the transmission groove, and is arranged in transmission groove In the pilot hole ", design whereby, the upper end of live spindle can wear positioning by the pilot hole, and then cause the polishing The rotation of cup is not suppressed not only by live spindle, can more prevent the axial movement that polishing rotor occurs during due to repeating rotating.

3. in such scheme, by taking two convex portions and two recesses as an example, the driving surface of the drive head is touching Just it can regularly drive polishing rotor to do when raised part and recess to rotate forward and reversely rotate twice twice, rotate forward With reverse rotation alternately.

4. in such scheme, the angle of the axis of the base and the axis of the live spindle is obtuse angle, its angle model Enclose for 95 ° ~ 145 °.From ergonomics angle design, doctor is driven in angle existing for wrist and arm using tooth bent angle itself is protected The angle of moving axis and driven shaft compensates, enable a physician to it is easier realize that polishing rotor and tooth are preferably bonded, and make Polishing rotor is so fine that to be bonded with dental surface, reaches preferable polishing effect.

5. in such scheme, the live spindle is corresponded on the housing of the shield tooth bent angle and is equipped with a latch, rotation master On axle to should latch be provided with two parallel butting sections, can be with the axial direction of rotary limited main shaft by the cooperation of latch and butting section Move and move radially.

6. in such scheme, all portions of the live spindle are additionally provided with multiple protruding ridges along its length.To strengthen The intensity of live spindle, avoiding causing to increase the torque demand of driving due to repeating rotating, the rotating speed of live spindle is larger, And bring destruction to live spindle.

7. in such scheme, pass through several first blades of spiral setting so that polishing rotor when rotated can be by antiscuffing paste It is retained in cup and without being discharged easily, extends the retention time of antiscuffing paste.

8. in such scheme, by setting raised, the adjacent water chestnut of several equally distributed rhombuses on the outer wall of polishing rotor There is gap, so as to form gap network structure staggeredly, network structure can help to collect what is discharged out of cup between shape projection Antiscuffing paste, and be limited in network structure, it is subject to certain restrictions its migration.Meanwhile four inclined-planes of rhombus are for throwing Light cream has guiding effect, to avoid the migration amount of antiscuffing paste from excessively being controlled, to reach balance.When dental scaler works, throw The outer surface of light cup can be simultaneously as burnishing surface increase polishing efficiency.

The gum that a certain amount of antiscuffing paste is deep into tooth periphery can be also carried simultaneous with the raised polishing rotor of rhombus , being capable of more efficient cleaning tooth in being stitched with gum.

9. in such scheme, spiral is gone back on the inwall of the cup and is provided with several second blades, each second blade Extended spirally with the connecting line of cup on the length direction of cup, and each second blade is arranged between two the first blades In gap；The length for being shorter in length than first blade of second blade.

By the cooperation of the first blade and the second blade, can avoid migrating antiscuffing paste when the first leaves density is excessive Obstruction it is excessive, while can avoid again when the first leaves density is too small to antiscuffing paste migration obstruction it is inadequate, to ensure to polish Cream burst size balances, is controllable.

Utility model works principle and advantage are as follows：

1st, compared to prior art, the utility model can use bigger speed, and can be to the tooth body surface that touches Face applies bigger pressure, reaches more preferable polishing effect；

2nd, heat caused by the utility model rotation is less, and the driving that more effectively can be provided using power output shaft be moved Can, while drive shaft and driven shaft there will not be the risk of overheating deforming；

3rd, shield tooth bent angle of the present utility model can preferably massage the gum of patient, and can reduce shock, cut Or the possibility of tear tooth body soft tissue, and reduce the risk that the antiscuffing paste applied splashes；

4th, compared to prior art, the utility model reduces to the burden of rotating element, reduce requirement to material and The difficulty of the manufacturing, so as to reduce production cost；

5th, the utility model can be controllable to the burst size of antiscuffing paste, and when polishing clean operation, retention time extends, increase Continuous effective polishing time；

6th, the structure of the utility model polishing rotor inner and outer wall can reduce the waste of antiscuffing paste, can effectively keep operating The cleaning of environment, increase patient's usage comfort；Operating process efficiency is improved simultaneously, and dentist does not have to repeatedly filling and thrown Light cream carries out treatment operation；

7th, the utility model polishing rotor both effectively teeth surfaces, and can provide the gum and gum to tooth periphery The cleaning of seam.

To sum up, compared to prior art, the utility model repeat that bigger rotating speed can be used during rotating, and right The surface that polishing rotor touches applies bigger pressure.In addition, heat caused by rotating is less, power can be more effectively utilized The driving kinetic energy that output shaft provides, while will not also have the risk of overheating deforming to rotating element.Also, protecting tooth bent angle can be with The gum of patient is preferably massaged, and the possibility of shock, cutting or tear tooth body soft tissue can be reduced, and reduces and applies The risk that the antiscuffing paste added splashes.Meanwhile the design of the polishing cup structure of innovation so that the control to antiscuffing paste is more stable, And the cleaning to tooth periphery is also more effective.

Brief description of the drawings

Accompanying drawing 1 is the side portion structure schematic diagram of prior art；

Accompanying drawing 2 is the front portion structure schematic diagram of prior art；

Accompanying drawing 3 is the dimensional structure diagram of prior art；

Accompanying drawing 4 is the side portion structure schematic diagram of the utility model embodiment；

Accompanying drawing 5 is the front portion structure schematic diagram of the utility model embodiment；

Accompanying drawing 6 is the dimensional structure diagram of the utility model embodiment；

Accompanying drawing 7 is the use state reference chart of the utility model embodiment；

Accompanying drawing 8 is the schematic cross-sectional view of the utility model embodiment（Right angle）；

Accompanying drawing 9 is the schematic cross-sectional view of the utility model embodiment（Obtuse angle）；

Accompanying drawing 10 is the structural representation of the utility model embodiment polishing rotor；

Accompanying drawing 11 is the structural representation of the utility model embodiment live spindle；

Accompanying drawing 12 is the principle schematic diagram one of the utility model embodiment；

Accompanying drawing 13 is the principle schematic diagram two of the utility model embodiment.

In the figures above：1. cup；2. base；3. housing；4. transmission groove；5. pilot hole；6. it is driven curved surface；It is 7. convex Portion；8. recess；9. live spindle；10. drive head；11. driving surface；12. latch；13. butting section；14. protruding ridge；21. Internal cavity；22. rib；23. blade；26. cavity；27. the first blade；28. rhombus is raised；29. the second blade.

Embodiment

Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：

Embodiment：Referring to shown in accompanying drawing 4~13, a kind of teeth polisher with novel polishing cup and repeatable rotating Protect tooth bent angle, including polishing rotor and drive component, the polishing rotor is connected with the drive component, the drive component with The motor output shaft drive connection of teeth polisher；

The polishing rotor includes cup 1 and base 2, and the cup 1 is fixed on the front end face of base 2, and the rear portion of base 2 is then Rotate and be arranged in the housing 3 of shield tooth bent angle；The end of the cup 1 interlocks the housing 3 for the shield tooth bent angle for being arranged at dental scaler, institute The front end for stating cup 1 is cleaning end, and the inside of cup 1 offers a cavity 26, and the cavity 26 extends towards the front end of cup, and The front portion of cavity 26 is opening；

Spiral is provided with several first blades 27 on the inwall of the cup 1, forms each first blade 27 and cup 1 Connecting line extended spirally on the length direction of cup 1, and the surface of each first blade 27 is in arc-shaped；Design, make whereby Obtaining polishing rotor when rotated can be retained in antiscuffing paste the retention time that antiscuffing paste without being discharged easily, is extended in cup.

Several rhombus projections 28 are evenly arranged on the outer wall of the cup 1, each rhombus projection 28 is set including four inclinations The face put and a summit；Each rhombus projection 28 is along longitudinal direction and is spaced laterally apart, and forms a network structure staggeredly.Pass through Several equally distributed rhombus projections 28 are set on the outer wall of polishing rotor, there is gap between adjacent rhombus projection 28, so as to Gap network structure staggeredly is formed, network structure can help to collect the antiscuffing paste discharged out of cup, and be limited to net In shape structure, it is subject to certain restrictions its migration.Meanwhile four inclined-planes of rhombus have guiding effect for antiscuffing paste, to keep away The migration amount for exempting from antiscuffing paste is excessively controlled, to reach balance.When dental scaler works, the outer surface of polishing rotor can conduct simultaneously Burnishing surface increases polishing efficiency.It can also carry a certain amount of antiscuffing paste simultaneous with the polishing rotor of rhombus projection 28 and be deep into tooth , being capable of more efficient cleaning tooth in gum and the gum seam on tooth rim side.

Wherein, the rear portion of the base 2 offers a transmission groove 4, and the radial direction of transmission groove 4 towards the base 2 opens up； The center of the transmission groove 4 offers a pilot hole 5, is enclosed in transmission groove 4 formed with a transmission curved surface 6, the transmission curved surface 6 Around the circumferentially continuous fluctuating of the pilot hole 5, there is two to six convex portions 7 and the recess 8 with the equivalent of convex portion 7, each convex portion 7 Shape is identical, and the shape of each recess 8 is also identical, forms the rotating forward of polishing rotor, reversion is angularly each convex portion 7 and institute State recess 8 to be arranged alternately, form the transmission 6 regular fluctuating of curved surface；

The drive component includes a live spindle 9, and the final drive of the live spindle 9 is connected to the motor output Axle, the upper end of live spindle 9 is stretched into the transmission groove 4, and is arranged in the pilot hole 5 of transmission groove 4, is set whereby Meter, the upper end of live spindle 9 can wear positioning by the pilot hole 5, and then make it that the rotation of the polishing rotor is not revolved not only Turn the suppression of main shaft 9, can more prevent the axial movement that polishing rotor occurs during due to repeating rotating.And the corresponding transmission in the upper end Groove 4 is provided with a drive head 10, and the drive head 10 is arranged at the axle center side of the live spindle 9, and is driven formed with one Dynamic surface 11, the driving surface 11 is in arc-shaped, and tiltedly setting outwardly axially upwards along live spindle 9；The drive head 10 Driving surface be meshed with the transmission curved surface 6 of the transmission groove 4, to reach the drive connection of live spindle 9 and polishing rotor；

Wherein, the width of the drive head 10 is adapted to the width of the transmission groove 4, is formed when drive head 10 is revolved The polishing rotor will be driven to rotate when turning；The height of the drive head 10 and the depth adaptation of the transmission groove 4, form and drive Dynamic head 10 while polishing rotor rotation is driven by polishing rotor radially it is carried out it is spacing；

Wherein, when the driving surface 11 of drive head 10 touches convex portion 7 and the recess of the transmission curved surface 6 successively When 8, form the polishing rotor and rotated forward and reversely rotated successively.It is described by taking two convex portions 7 and two recesses 8 as an example The driving surface 11 of drive head 10 just regularly can drive polishing rotor to do two when touching raised part 7 and recess 8 It is secondary to rotate forward and reversely rotate twice, rotate forward and reversely rotate alternately.

Wherein, as shown in Fig. 2 the angle of the axis of the base 2 and the axis of the live spindle 9 is obtuse angle, its angle It is 95 ° ~ 145 ° to spend scope.From ergonomics angle design, doctor is utilized in angle existing for wrist and arm and protects tooth bent angle certainly Body drive shaft（That is live spindle 9）And driven shaft（That is base 2）Angle compensate, enable a physician to easier realize polishing Cup and tooth are preferably bonded, and fine obtain of polishing rotor is bonded with dental surface, reach preferable polishing effect.

Wherein, correspond to the live spindle 9 on the housing 3 of the shield tooth bent angle and be equipped with a latch 12, in live spindle 9 To should latch 12 be provided with two parallel butting sections 13, can be with rotary limited main shaft 9 by the cooperation of latch 12 and butting section 13 Axial movement and move radially.

Wherein, all portions of the live spindle 9 are additionally provided with multiple protruding ridges 14 along its length.To strengthen rotation master The intensity of axle 9, avoid causing to increase the torque demand of driving due to repeating rotating, the rotating speed of live spindle 9 is larger, and gives Live spindle 9 brings destruction.

Wherein, spiral is gone back on the inwall of the cup 1 and is provided with several second blades 29, each second blade 29 and cup The connecting line of body 1 extends spirally on the length direction of cup 1, and each second blade 29 is arranged at two the first blades 27 In gap；The length for being shorter in length than first blade 27 of second blade 29.

By the cooperation of the first blade 27 and the second blade 29, can avoid when the density of the first blade 27 is excessive to polishing Cream migration obstruction it is excessive, while can avoid again when the density of the first blade 27 is too small to antiscuffing paste migration obstruction it is inadequate, with Ensure balancing, being controllable for antiscuffing paste burst size.

For above-described embodiment only to illustrate technical concepts and features of the present utility model, its object is to allow be familiar with technique Personage can understand content of the present utility model and implement according to this, the scope of protection of the utility model can not be limited with this. All equivalent change or modifications made according to the utility model Spirit Essence, should all cover the scope of protection of the utility model it It is interior.

Claims (5)

1. A kind of 1. teeth polisher shield tooth bent angle with novel polishing cup and repeatable rotating, it is characterised in that：Including throwing Light cup and drive component, the polishing rotor are connected with the drive component, the electricity of the drive component and teeth polisher Machine output shaft is connected；

   The polishing rotor includes cup and base, and the cup is fixed on the front end face of base, and the rear portion of base then rotates setting In the housing of shield tooth bent angle；The front end of the cup is cleaning end, and the inside of cup offers a cavity, and the cavity is towards cup The front end extension of body, and the front portion of cavity is opening；Spiral is provided with several first blades on the inwall of the cup, forms each The connecting line of first blade and cup extends spirally on the length direction of cup, and the surface of each first blade is in circular arc Shape；It is raised that several rhombuses are evenly arranged on the outer wall of the cup, rhombus projection includes four faces being obliquely installed and one Individual summit；Each rhombus projection is along longitudinal direction and is spaced laterally apart, and forms a network structure staggeredly；

   Wherein, the rear portion of the base offers a transmission groove, and the radial direction of the transmission groove towards base opens up；The transmission The center of groove offers a pilot hole, and the pilot hole is surrounded formed with a transmission curved surface, the transmission curved surface in transmission groove Circumferentially continuous fluctuating, there is two to six convex portions and the recess with convex portion equivalent, the shape of each convex portion is identical, each recess Shape is also identical, and each convex portion and the recess are arranged alternately, and forms the transmission regular fluctuating of curved surface；

   The drive component includes a live spindle, and the final drive of the live spindle is connected to the motor output shaft, rotation The upper end of main shaft is stretched into the transmission groove, and is arranged in the pilot hole of transmission groove, and the corresponding biography in the upper end Dynamic groove is provided with a drive head, and the drive head is arranged at the axle center side of the live spindle, and formed with a driving table Face, the driving surface are in arc-shaped, and tiltedly setting outwardly axially upwards along live spindle；The driving surface of the drive head with The transmission curved surface of the transmission groove is meshed, to reach the drive connection of live spindle and polishing rotor；

   Wherein, the width of the drive head is adapted to the width of the transmission groove, and forming will drive when drive head rotates The dynamic polishing rotor rotation；The height of the drive head and the depth adaptation of the transmission groove, form drive head and driving While dynamic polishing rotor rotation by polishing rotor radially it is carried out it is spacing；

   Wherein, when the driving surface of drive head touches convex portion and the recess of the transmission curved surface successively, institute is formed Polishing rotor is stated to be rotated forward and reversely rotated successively.
2. 2. shield tooth bent angle according to claim 1, it is characterised in that：The axis of the base and the axle of the live spindle The angle of line is obtuse angle, and its angular range is 95 °~145 °.
3. 3. shield tooth bent angle according to claim 1, it is characterised in that：The rotation is corresponded on the housing of the shield tooth bent angle Spindle mounted has a latch, in live spindle to should latch be provided with two parallel butting sections.
4. 4. shield tooth bent angle according to claim 3, it is characterised in that：All portions of the live spindle are gone back along its length Provided with multiple protruding ridges.
5. 5. shield tooth bent angle according to claim 1, it is characterised in that：Gone back on the inwall of the cup spiral be provided with it is several Second blade, the connecting line of each second blade and cup extends spirally on the length direction of cup, and each second leaf Piece is arranged in the gap of two the first blades；

   The length for being shorter in length than first blade of second blade.