CN208099955U - A kind of micro- texture preparation facilities of new medical joint prosthesis ball surface - Google Patents
A kind of micro- texture preparation facilities of new medical joint prosthesis ball surface Download PDFInfo
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- CN208099955U CN208099955U CN201820268182.4U CN201820268182U CN208099955U CN 208099955 U CN208099955 U CN 208099955U CN 201820268182 U CN201820268182 U CN 201820268182U CN 208099955 U CN208099955 U CN 208099955U
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Abstract
The utility model discloses a kind of medical micro- texture preparation facilities of joint prosthesis ball surface, the rear end of its ultrasonic transducer is connect with crowded knife handle is ground, the front end of the spiral amplitude transformer is connect by studs with the rear end that microarray grinds crowded head, the front interval that the microarray grinds crowded head is uniformly arranged grinding column, it is described to grind crowded knife handle with lathe cutter saddle or spindle operation, it drives microarray to grind crowded head radial feed to squeeze, ultrasonic transducer will be converted into ultra sonic machinery vibration mode by the electrical power inputted at induction coil, microarray, which is transmitted these vibrations to, through spiral amplitude transformer grinds crowded head, it finally acts on the surface of medical joint prosthesis ball, it processes and micro- knits structure.The utility model introduces depth residual compressive stress in joint ball surface and micro- knits structure, and then obtain the high added value medical titanium alloy joint prosthesis with high wear resistance, enhance its bio-tribology performance under physiological environment, improves the stability and reliability of prosthetic replacement.
Description
Technical field
The present invention relates to a kind of processing technologies of medical joint prosthesis ball, more particularly to a kind of new medical joint prosthesis
The micro- texture preparation facilities of ball surface.
Background technique
Joint is that human body bears the maximum biological friction pair of load, various traffic accidents, vigorous exercise and disease etc.
The human synovial damage of initiation and lesion have become an important factor for influencing human life Health and Living quality.The whole world at present
Joint prosthesis demand rapidly increases, and joint prosthesis consumption figure is more than 1,000,000 sets every year on average in the U.S., and the output value is more than 10,000,000,000 dollars,
According to measuring and calculating, China's joint prosthesis potential demand amount is more than 3,000,000 sets, and more than 40 ten thousand sets of real consumption amount in 2014 is still kept at present
The rapid growth of average annual 15%-20%, market potential are huge.However, joint prosthesis causes in the intracorporal rapid wear of people, abrasive dust
" abrasive dust disease " is still the problem for influencing the joint replacement service life.2008, since the failure rate after clinical application is far beyond pre-
Phase, Zimmer company actively recalled under Durom acetabular component component (metal to metal)；2010, due to failure rate
About 1/8, the DePuy company under Johson & Johnson has to actively recall its ASRXL hip prosthesis (metal to metal), and
Recalling the reason of company's explanation is recalled is that patient high revision rate occurs；2012, due to metal toxicity and higher revision rate,
Stryker company has to recall its Rejuvenate hip prosthesis (metal to metal)；The same year is also due to skeleton animation
Rate be higher than United Kingdom National health and clinical optimizing research set revision rate benchmark, Xerox's brightness curable product international trade
(Shanghai) Co., Ltd. is to hip replacement system (trade name：Birmingham it) is recalled.
Obviously, can the surface quality of joint prosthesis be to guarantee one of key index that its long-time is on active service safely, must be right
Joint prosthesis surface carries out work strengthening or modified reprocessing to improve fatigue strength, extend service life.Preparation has carrying
Wear-resistant, corrosion resisting property simultaneously has the micro- joint prosthesis for knitting texture features of self-lubricating.Need to joint prosthesis surface introduce it is micro- knit structure,
This micro- structure of knitting has depth residual compressive stress and takes into account surface microstructure nanosizing, geometric shape nanosizing surface precision
The features such as.
Chinese patent literature (application number 201610495238.5) be related to a kind of micro- texture of band The Spherical Plain Bearing and its
Manufacturing method, the micro- texture in invention surface are the appearances using the ultrasonic burnishing tool rolling oscillating bearing inner ring with microprotrusion
The inner surface in face and outer ring realizes the forming of the micro- texture in surface, oscillating bearing surfaces externally and internally surface roughness is greatly lowered,
Metal grain refinement, micro-hardness improve, and frictional decrease makes the anti-fatigue performance of oscillating bearing due to introducing compression
It greatly improves；Secondly it is related to a kind of micro- texture preparation side of inner surface there are also Chinese patent literature (application number 201710304443.3)
Method processes micro- texture for the interior walls in workpiece, processes micro- texture with abrasive grain grinding work piece inner surface, abrasive grain, which is set to, to be added
The outer surface that tooling is set, and with the internal chamber wall of the rotation workpieces processing of processing unit (plant) to form micro- texture, high in machining efficiency but
Big calorimetric is generated in the method process, and micro- texture quality is had an impact.Above-mentioned micro- texture forming method is primarily adapted for use in
Plate, the single types such as bar face.
Summary of the invention
The technical problem to be solved by the present invention is to：Overcome the deficiencies of the prior art and provide that a kind of abrasion is slow, service life
Length can introduce depth residual compressive stress on surface and take into account the micro- texture preparation of medical joint prosthesis ball surface of surface microstructure
Device.
The technical scheme is that
The medical micro- texture preparation of joint prosthesis ball surface includes the following steps
A, it in conjunction with the characteristics of medical joint prosthesis ball surface, establishes microarray and grinds crowded head, grind the rear end of crowded head in microarray
Mounting hole is set, is uniformly arranged grinding column in the front interval that microarray grinds crowded head；
B, ultrasonic transducer is set, and the rear end of ultrasonic transducer is connect with crowded knife handle is ground, the spiral change of ultrasonic transducer
The front end of width bar is connect by studs with the rear end that microarray grinds crowded head, is provided with helicla flute in spiral amplitude transformer,
Torsional component is introduced on the basis of ultrasonic vibration longitudinal component, generates single excitation longitrorse resonance with specific longitrorse vibration amplitude ratio
Mode；
C, crowded knife handle will be ground to be mounted on the knife rest or main shaft of lathe, medical joint prosthesis ball is connected to machine chuck
On, crowded knife handle is ground with lathe cutter saddle or spindle operation, is driven microarray to grind crowded head radial feed and is squeezed, ultrasonic transducer will lead to
It crosses the electrical power inputted at induction coil and is converted into ultra sonic machinery vibration mode, transmitted these vibrations to through spiral amplitude transformer micro-
Array grinds crowded head, finally acts on the surface of medical joint prosthesis ball；
D, microarray grinds crowded head and moves around workpiece centre of sphere swivel feeding, and that completes entire spherical surface grinds crowded processing, processes micro-
Knit structure.
Ultrasonic transducer includes piezoelectric ceramic piece, copper electrode, spiral amplitude transformer and induction coil, adjacent two piezoelectric ceramics
The longitudinal polarization of piece is contrary, is bonded after piezoelectric ceramic piece purification by adhesive, in the end of spiral amplitude transformer
Helicla flute is opened up, the extensional vibration singly motivated is converted into vertical-Torsional Vibration, by changing the structural parameters of helicla flute, to change
It is vertical-to turn round Amplitude Ration.
The grinding column that microarray grinds crowded head is diamond shape, rectangular or round, wherein rectangular grinding column and diamond shape grind column and pass through
Slow feeding linear cutting is process, and circular abrasive column is formed by the anti-translation electro-discharge machining of copying of electric spark.
The diameter or side length for grinding column are 100-500 μm, grind 600-1000 μm of pillar height degree, grind the uniformly distributed spacing of column
20-80μm；The dimple structure processed using grinding column in joint ball surface, has good oil storage greasy property, and ultrasound adds
The texture scale of work plays a part of carrying.
Medical joint prosthesis ball is made of Titanium alloy Ti-6Al-4V, by different operating mode, different vibration dimension,
Various amplitude, frequency and power grind high speed rotation component progress ultrasound crowded；Give different types of flow from small to large simultaneously
The coolant liquid postponed to chilling is cooled down, and the micro- texture in surface is finally processed on joint ball.A kind of medical joint prosthesis ball
The micro- texture processing unit (plant) in surface, including ultrasonic transducer, the ultrasonic transducer includes piezoelectric ceramic piece, copper electrode, spiral
The end of amplitude transformer and induction coil, the spiral amplitude transformer opens up helicla flute, by the extensional vibration singly motivated be converted to it is vertical-
Torsional Vibration, by change helicla flute structural parameters, come change it is vertical-turn round Amplitude Ration, the rear end of the ultrasonic transducer with grind it is crowded
Knife handle connection, the front end of the spiral amplitude transformer are connect by studs with the rear end that microarray grinds crowded head, micro- battle array
The front interval that column grind crowded head is uniformly arranged grinding column, described to grind crowded knife handle and be mounted on the knife rest or main shaft of lathe, with machine
Bed knife rest or spindle operation drive microarray to grind crowded head radial feed and squeeze, and ultrasonic transducer will be by inputting at induction coil
Electrical power be converted into ultra sonic machinery vibration mode, transmit these vibrations to microarray through spiral amplitude transformer and grind crowded head, finally
It acts on the surface of medical joint prosthesis ball, processes and knit structure with the micro- of felt shape.
The beneficial effects of the invention are as follows
1, there is high revision rate, makes mainly to traditional technology manufacture of intraocular joint rapid wear in human body in the present invention
With the service life it is short the problems such as, propose the processing method of a kind of microstructure nanosizing, geometry state nanosizing and surface precision, make
For joint prosthesis ball surface, in joint, ball surface introduces depth residual compressive stress and the micro- texture structure in surface, realizes titanium alloy
The veining and grain refining of joint prosthesis ball surface, and then obtain the high added value medical titanium alloy with high wear resistance
Joint prosthesis enhances its bio-tribology performance under physiological environment, improves the stability and reliability of prosthetic replacement；
2, the present invention processes the micro- texture in " felt shape " surface using ultrasound longitrorse Milling of Titanium Alloy Ti-6Al-4V, this
Micro- structure of knitting is with good oil storage greasy property, and micro- scale of knitting of Ultrasonic machining plays a part of carrying；
3, the ultrasound applied of the present invention grinds crowded tool compared to traditional one bar of superplastic deformation fine grain method work sheet,
Silk material, plate are more suitable for the Machining Complicated Profiles such as processing joint prosthesis ball surface；The micro- texture preparation method in surface is will be ultrasonic
The advantages of vibrocutting texture and microarray imprint combines, and superficial layer structural state may be implemented and micro- knit structure-controllable；
4, the present invention opens longitudinal spiral slot in amplitude transformer, and the extensional vibration that single excitation generates connects in conveyor screw and cylindrical surface
The root of touching is decomposed into the vibration along hand of helix and vertical spin line direction, when the vibration frequency and spiral shell of both vibrations
When the local buckling vibration frequency of rotation body is close or identical, conveyor screw will generate longitudinal resonance and flexural resonance, be equivalent to spiral
Circumferentially face carries out twisting vibration to body, but the structural damping of transmitting terminal will cause the extensional vibration of output end and twisting vibration generates
Phase difference, so that composite ultraphonic vibration is indulged-turned round in single excitation of implementation tool head；
5, the present invention has rational design, is easy to implement, and can introduce depth residual compressive stress on surface and take into account surface microscopic
Structure, oil storage greasy property is good, implementation easy to spread, with good economic efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the micro- texture preparation facilities of medical joint prosthesis ball surface；
Fig. 2 is the structural schematic diagram of spiral amplitude transformer in Fig. 1；
Fig. 3 is threaded hole sectional view in Fig. 2；
Fig. 4 is the structural schematic diagram that diamond shape grinds column；
Fig. 5 is the structural schematic diagram of rectangular grinding column；
Fig. 6 is the structural schematic diagram of circular abrasive column.
Specific embodiment
Embodiment：Referring to Fig. 1-Fig. 6, in figure, 101- grinds crowded knife handle, 102- ultrasonic transducer, the spiral amplitude transformer of 103-,
104- microarray grinds crowded head, 105- induction coil, 106- studs, 107- grinding column, 201- helicla flute, the grinding of 401- diamond shape
Column, the rectangular grinding column of 501-, 601- circular abrasive column.
The medical micro- texture preparation facilities of joint prosthesis ball surface includes the following steps
A, it in conjunction with the characteristics of medical joint prosthesis ball surface, establishes microarray and grinds crowded head 104, grind crowded head 104 in microarray
Rear end be arranged mounting hole, the front interval that microarray grinds crowded head 104 be uniformly arranged grinding column 107；B, ultrasonic transduction is set
Device 102, the rear end of ultrasonic transducer 102 are connect with crowded knife handle 101 is ground, before the spiral amplitude transformer 103 of ultrasonic transducer 102
End is connect by studs 106 with the rear end that microarray grinds crowded head 104, is provided with helicla flute in spiral amplitude transformer 103
201, torsional component is introduced on the basis of ultrasonic vibration radial component, generating has single excitation of specific longitrorse vibration amplitude ratio vertical
Twist resonance mode；
C, crowded knife handle 101 will be ground to be mounted on the knife rest of aspherical lathe, medical joint prosthesis ball is connected to lathe card
On disk, crowded knife handle 101 is ground with lathe saddle or spindle operation, drives microarray to grind crowded 104 radial feed of head and squeezes, grind crowded knife
Handle 101 plays the role of support and rotary motion, and ultrasonic transducer 102 will be turned by the electrical power inputted at induction coil 105
Ultra sonic machinery vibration mode is turned to, microarray is transmitted these vibrations to through spiral amplitude transformer 103 and grinds crowded head 104, finally act on
On the surface of medical joint prosthesis ball；
D, microarray grinds crowded head 104 and moves around workpiece centre of sphere swivel feeding, and that completes entire spherical surface grinds crowded processing, processes
It is micro- to knit structure.
Ultrasonic transducer 102 includes piezoelectric ceramic piece, copper electrode, spiral amplitude transformer 103 and induction coil 105, adjacent
The longitudinal polarization of two piezoelectric ceramic pieces is contrary, is bonded after piezoelectric ceramic piece purification by adhesive, is spirally being become
The end of width bar 103 opens up helicla flute 201, and the extensional vibration singly motivated is converted to vertical-Torsional Vibration, by changing helicla flute
201 structural parameters, to change vertical-torsion Amplitude Ration.
The grinding column 107 that microarray grinds crowded head 104 is diamond shape, rectangular or round, wherein rectangular grinding column 501 and diamond shape
Grinding column 401 is process by slow feeding linear cutting, and circular abrasive column 601 copies translation electro-discharge machining by the way that electric spark is counter
At.The diameter or side length for grinding column 107 are 100-500 μm, and 600-1000 μm of height of grinding column 107, grinding column 107 is evenly distributed with
20-80 μm of spacing；The dimple structure processed using grinding column 107 in joint ball surface, has good oil storage greasy property,
The texture scale of Ultrasonic machining plays a part of carrying.It is capable of forming according to the shape of grinding column 107 and arrangement mode different
It is micro- to knit structure, for example it is capable of forming the micro- texture in " felt shape " surface, in addition, lathe can use aspherical lathe, can also adopt
With five-axis machine tool, can choose as needed.
Medical joint prosthesis ball is made of Titanium alloy Ti-6Al-4V, by different operating mode, different vibration dimension,
Various amplitude, frequency and power grind high speed rotation component progress ultrasound crowded；Give different types of flow from small to large simultaneously
The coolant liquid postponed to chilling is cooled down, and micro- texture is finally processed in the ball surface of joint.
The micro- texture preparation facilities in surface that the present invention is applied is compared to traditional superplastic deformation fine grain method work sheet one
Bar, silk material, plate are more suitable for the Machining Complicated Profiles such as processing joint prosthesis ball surface；The micro- texture preparation method in surface is
The advantages of ultrasonic vibration cutting texture and microarray are imprinted combines, and superficial layer structural state may be implemented and micro- structure of knitting can
Controlization.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, it is all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within
In the range of technical solution of the present invention.
Claims (5)
1. a kind of micro- texture preparation facilities of new medical joint prosthesis ball surface, including ultrasonic transducer（102）, it is characterized in that：
The ultrasonic transducer（102）Spiral amplitude transformer（103）End open up helicla flute（201）, the longitudinal direction singly motivated is shaken
Turn is changed to vertical-Torsional Vibration, by changing helicla flute（201）Structural parameters, come change it is vertical-turn round Amplitude Ration, the ultrasound changes
It can device（102）Rear end and grind crowded knife handle（101）Connection, the spiral amplitude transformer（103）Front end pass through studs
（106）Crowded head is ground with microarray（104）Rear end connection, the microarray grinds crowded head（104）Front interval be uniformly arranged and grind
Grinding column（107）, described to grind crowded knife handle（101）It is mounted on the knife rest or main shaft of lathe, with lathe cutter saddle or spindle operation, band
Dynamic microarray grinds crowded head（104）Radial feed squeezes, ultrasonic transducer（102）Induction coil will be passed through（105）Locate the electricity of input
Power is converted into ultra sonic machinery vibration mode, through spiral amplitude transformer（103）It transmits these vibrations to microarray and grinds crowded head
（104）, finally act on the surface of medical joint prosthesis ball, process and micro- knit structure.
2. the micro- texture preparation facilities of medical joint prosthesis ball surface according to claim 1, it is characterized in that：The microarray
Grind crowded head（104）It is moved around workpiece centre of sphere swivel feeding, that completes entire spherical surface grinds crowded processing.
3. the micro- texture preparation facilities of medical joint prosthesis ball surface according to claim 1, it is characterized in that：The microarray
Grind crowded head（104）Grinding column（107）For diamond shape, rectangular or round, wherein rectangular grinding column（501）Column is ground with diamond shape
（401）It is process by slow feeding linear cutting, circular abrasive column（601）Translation electro-discharge machining is copied by the way that electric spark is counter
At.
4. the micro- texture preparation facilities of medical joint prosthesis ball surface according to claim 1, it is characterized in that：The grinding column
（107）Diameter or side length be 100-500 μm, the grinding column（107）600-1000 μm of height, the grinding column（107）'s
Uniformly distributed 20-80 μm of spacing；Utilize the grinding column（107）The dimple structure that ball surface processes in joint has storage well
The texture scale of oil lubricity energy, Ultrasonic machining plays a part of carrying.
5. the micro- texture preparation facilities of medical joint prosthesis ball surface according to claim 1, it is characterized in that：Medical artificial pass
Section ball is made of Titanium alloy Ti-6Al-4V, passes through different operating mode, different vibration dimensions, various amplitude, frequency and power
High speed rotation component progress ultrasound is ground crowded；Give different types of flow simultaneously from small to large and postpone coolant liquid to chilling into
Row cooling, finally processes the micro- texture in surface on joint ball.
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| CN201820268182.4U CN208099955U (en) | 2018-02-25 | 2018-02-25 | A kind of micro- texture preparation facilities of new medical joint prosthesis ball surface |
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| CN201820268182.4U CN208099955U (en) | 2018-02-25 | 2018-02-25 | A kind of micro- texture preparation facilities of new medical joint prosthesis ball surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560533A (en) * | 2019-09-16 | 2019-12-13 | 武汉纺织大学 | Flexible roll forming method and device for metal surface microstructure array |
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2018
- 2018-02-25 CN CN201820268182.4U patent/CN208099955U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560533A (en) * | 2019-09-16 | 2019-12-13 | 武汉纺织大学 | Flexible roll forming method and device for metal surface microstructure array |
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Granted publication date: 20181116 Termination date: 20210225 |