WO2021008130A1 - 一种人工膝关节胫骨托用磁流变抛光加工装置 - Google Patents

一种人工膝关节胫骨托用磁流变抛光加工装置 Download PDF

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Publication number
WO2021008130A1
WO2021008130A1 PCT/CN2020/073336 CN2020073336W WO2021008130A1 WO 2021008130 A1 WO2021008130 A1 WO 2021008130A1 CN 2020073336 W CN2020073336 W CN 2020073336W WO 2021008130 A1 WO2021008130 A1 WO 2021008130A1
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WO
WIPO (PCT)
Prior art keywords
knee joint
gear
artificial knee
magnetorheological polishing
joint tibial
Prior art date
Application number
PCT/CN2020/073336
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English (en)
French (fr)
Inventor
杜永杰
王鸿云
朱伟强
彭伟
方晓斌
郑应桃
方明
傅莉莉
Original Assignee
浙江科惠医疗器械股份有限公司
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Publication of WO2021008130A1 publication Critical patent/WO2021008130A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/005—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes using a magnetic polishing agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
    • B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents

Definitions

  • the invention relates to a magnetorheological polishing processing device for an artificial knee joint tibia tray.
  • the human knee joint is composed of the thigh bone or tibia, fibula, and patella called femur and calf bone.
  • Natural joint substitute materials should have good biocompatibility and stability, high strength, high plastic toughness and high fatigue performance, excellent corrosion resistance and wear resistance. Titanium alloy has good corrosion resistance and biocompatibility, and has been widely used in implants in the biomedical field. The main problem of titanium alloy implant materials is corrosion.
  • corrosion causes corrosion products to enter the human body, causing serious physiological hazards, such as tissue poisoning, cell distortion, etc.; on the other hand, it causes loosening and early fracture of the implanted prosthesis. Failure behavior.
  • the corrosion resistance of titanium alloy implants decreases with the increase of its surface roughness.
  • the smooth surface and micro-rough surface have good corrosion resistance and low ion release rate. Therefore, it is particularly necessary to perform proper surface finishing treatment on medical titanium alloy implants.
  • titanium alloy implants Due to the poor cutting performance of titanium alloy, the surface is easily oxidized.
  • precision forging, vacuum precision casting, cold (hot) upsetting, etc. are commonly used at home and abroad for forming processing, and chemical polishing, mechanical polishing, electrolytic polishing and other methods are used for surface finishing. Processing.
  • titanium alloy implants have more burrs and thicker oxide film after processing, as artificial joints implanted in the human body, the surface roughness of the material is relatively high, which can easily lead to the formation of thrombus. Therefore, higher requirements are put forward for the smooth surface and micro rough surface of medical titanium alloy implants.
  • the purpose of the present invention is to provide a magnetorheological polishing processing device for an artificial knee joint tibial tray, which can effectively solve the problem that the surface roughness of the existing artificial knee joint tibial tray cannot meet the requirements.
  • a magnetorheological polishing processing device for artificial knee joint tibial trays including a frame, an upper grinding disc, a coil, a magnetorheological polishing fluid, an internal gear, and an external Tray, inner tray, sun gear and star wheel, the upper grinding disc is detachably fixed on the frame, the internal gear is rotatably arranged on the frame, and the internal gear is provided with a sun gear and at least the same horizontal plane.
  • a star wheel the internal gear meshes with the star wheel, the star wheel meshes with the sun gear, and the star wheel is provided with a plurality of placement holes for preventing polishing parts to be processed, the magnetorheological polishing liquid Filled between the upper grinding disc and the star wheel, and the coil is fixed on the upper grinding disc.
  • the internal gear includes an inner wheel body and gear teeth
  • the inner wheel body is provided with an inner cavity with an open top
  • the gear teeth are fixed on the side wall of the inner cavity
  • the bottom center of the inner wheel body is provided with A first axle extending away from the inner wheel body.
  • an outer tray extending toward the center of the inner wheel body is also fixed on the side wall of the inner cavity below the gear teeth for lifting the star wheel.
  • a collection box for collecting magnetorheological polishing liquid is provided in the inner cavity of the inner wheel body.
  • a cylindrical hollow pillar is provided in the middle of the collection box, a second wheel shaft extending downward is provided in the center of the sun gear, and the second wheel shaft is connected to the hollow pillar through a bearing.
  • the bottom of the sun wheel is provided with an inner tray extending radially outwards for lifting the star wheel.
  • the collection box is provided with an inclined surface that gradually decreases in height from the center to the periphery, the lowest point of the inclined surface is provided with a drain hole, the drain hole penetrates the bottom of the inner wheel body, and the drain hole is provided with There is a drain plug.
  • the placement hole matches the shape of the artificial knee joint tibial tray to be processed.
  • the planetary wheel located between the sun gear and the internal gear, it can be autobiography while revolving, and the magnetorheological polishing liquid can be turned into a solid form through the coil, and the artificial knee joint tibial tray placed on the planetary wheel Polishing, since the magnetorheological polishing liquid is in liquid form before receiving the magnetic field, it can fit the shape of the artificial knee joint tibial tray well, and it becomes a solid form after being magnetized, which effectively improves the polishing accuracy.
  • the inner gear includes an inner wheel body and gear teeth.
  • the inner wheel body is provided with an inner cavity with an opening at the top.
  • the gear teeth are fixed on the side wall of the inner cavity.
  • the first axle extending in the body direction.
  • the inner wheel body with an opening on the top of the inner cavity can not only be used as a gear transmission, but also can be placed in the sun gear, star gear, etc. for protection.
  • An outer tray extending toward the center of the inner wheel body is also fixed on the side wall of the inner cavity under the gear teeth for lifting the star wheel.
  • the outer tray is used to lift the cruiser to maintain the stability of the cruiser.
  • the inner cavity of the inner wheel body is provided with a collection box for collecting magnetorheological polishing liquid. Through the collection box, the fallen magnetorheological polishing liquid is collected and recycled.
  • a cylindrical hollow pillar is arranged in the middle of the collection box, a second wheel shaft extending downward is arranged in the center of the sun gear, and the second wheel shaft is connected with the hollow pillar through a bearing.
  • the hollow pillar is matched with the second axle to prop up the sun gear to ensure that the sun gear can rotate along its own axis.
  • the bottom of the sun wheel is provided with an inner tray extending radially outwards for lifting the star wheel. Lift the other side of the cruise ship through the inner tray.
  • the collection box is provided with an inclined surface that gradually decreases in height from the center to the periphery, the lowest point of the inclined surface is provided with a drain hole, the drain hole penetrates the bottom of the inner wheel body, and the drain hole is provided with a drain hole. Stuffed.
  • the inclined surface is better to gather the collected magnetorheological polishing liquid, and then discharge it through the drain hole for easy collection.
  • the placement hole matches the shape of the artificial knee joint tibial tray to be processed. Better fix the artificial knee joint tibia tray.
  • Figure 1 is a schematic structural view of a magnetorheological polishing processing device for an artificial knee joint tibial tray according to the present invention
  • Figure 2 is a top view of the combination of the internal gear, planetary gear and sun gear in the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality of” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components, Unless otherwise clearly defined.
  • the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
  • a magnetorheological polishing processing device for an artificial knee joint tibial tray includes a frame, an upper grinding disk 1, The coil 2, the magnetorheological polishing liquid 3, the internal gear 4, the outer tray 5, the inner tray 6, the sun gear 9 and the star wheel 10.
  • the upper grinding disc 1 can be detachably fixed on the frame, and the detachable way can be adopted Bolt fixing, etc.
  • the internal gear 4 is rotatably arranged on the frame, and the internal gear 4 is provided with a sun gear 9 and at least one planetary gear 10 on the same horizontal plane, and the internal gear 4 and the planetary gear 10
  • the planetary wheel 10 is engaged with the sun gear 9, and the planetary wheel 10 is provided with a number of placement holes 12 for preventing the polished parts 100 to be processed.
  • the placement holes 12 are connected to the shape of the artificial knee joint tibial tray to be processed.
  • the magnetorheological polishing liquid 3 is filled between the upper grinding disc 1 and the star wheel 10, and the coil 2 is fixed on the upper grinding disc 1.
  • the internal gear 4 includes an inner wheel body 41 and gear teeth 42.
  • the inner wheel body 41 is provided with an inner cavity 43 with an open top.
  • the gear teeth 42 are fixed on the side wall of the inner cavity 43.
  • the bottom center of the body 41 is provided with a first axle 44 extending away from the inner wheel body 41.
  • the first axle 44 can be connected with a motor for transmission, and the first axle 44 can be rotatably arranged on the frame.
  • an outer tray 5 extending toward the center of the inner wheel body 41 is also fixed on the side wall of the inner cavity 43 below the gear teeth 42 for Lifting the star wheel 10, and further, the bottom of the sun wheel 9 is provided with an inner tray 6 extending radially outwards for lifting the star wheel 10.
  • the sun gear 9 is rotatably connected to the hollow pillar 81 through the bearing 7.
  • the inner cavity 43 of the inner wheel body 41 is provided with a collection box 8 for collecting the magnetorheological polishing liquid 3, and the collection
  • a cylindrical hollow pillar 81 is provided in the middle of the box 8, a second wheel shaft 91 extending downward is provided in the center of the sun gear 9, and the second wheel shaft 91 is connected to the hollow pillar 81 through a bearing 7.
  • the collection box 8 is provided with an inclined surface 82 that gradually decreases in height from the center to the surroundings.
  • the lowest point of the inclined surface 82 is provided with a drain hole, and the drain hole penetrates At the bottom of the inner wheel body 41, a drain plug 13 is provided in the drain hole.
  • the polishing piece 100 is a medical artificial knee joint tibia tray, placed in the multiple placement holes 12 provided on the planetary wheel 10, the liquid magnetorheological polishing solution 3 is injected, the coil 2 is energized, and the upper grinding disc 1 generates a magnetic field.
  • the liquid magnetorheological polishing liquid 3 becomes a solid-like chain magnetorheological brush, and the internal gear 4 is activated to drive the planetary wheel 10 to rotate and revolve.
  • the polishing piece 100 arranged in the placement hole 12 of the planetary wheel 10 rotates and revolves at the same time. At this time, the upper grinding disc 1 is fixed on the frame without moving, and the magnetorheological brush can polish the polishing piece 100.
  • the coil 2 is powered off, and the bracket collecting box 8 collects the liquid magnetorheological polishing liquid 3 for reuse.
  • the magnetorheological polishing liquid 3 is turned into a solid form through the coil 2.
  • the artificial knee joint tibial tray is polished. Because the magnetorheological polishing liquid 3 is in liquid form before receiving the magnetic field, it can fit the shape of the artificial knee joint tibial tray well, and it becomes a solid form after being magnetized, which effectively improves Polishing accuracy.

Abstract

一种人工膝关节胫骨托用磁流变抛光加工装置，装置的上磨盘(1)可拆卸固定在机架上，内齿轮(4)转动设置在机架上，内齿轮(4)内设有位于同一水平面的太阳轮(9)和至少一个游星轮(10)，内齿轮(4)与游星轮(10)啮合，游星轮(10)与太阳轮(9)啮合，游星轮(10)上开有若干放置待加工抛光件的放置孔(12)，磁流变抛光液(3)充入上磨盘(1)与游星轮(10)之间，线圈(2)固定在上磨盘(1)上。人工膝关节胫骨托用磁流变抛光加工装置，可以很好地适配人工膝关节胫骨托的形状，且能够有效提高抛光精度。

Description

一种人工膝关节胫骨托用磁流变抛光加工装置 技术领域
本发明涉及一种人工膝关节胫骨托用磁流变抛光加工装置。
 背景技术
人类疾病引起的关节病变或意外事故造成的关节损坏，破坏了人体关节的正常功能，给患者的生活和工作带来极大不便。人工关节置换能有效的重建关节功能，恢复活动能力和提高生活质量的途径，因而人工关节的医疗需求也日益增多。人体膝关节是由大腿骨或叫股骨、小腿骨的胫骨和腓骨、髌骨构成的。天然关节替代材料应具有良好的生物相容性及稳定性，高强度、高塑韧性及高疲劳性能，优异的耐腐蚀性及耐磨性。钛合金具有良好的耐腐蚀性和生物相容性，在生物医学领域的植入物中已广为利用。钛合金植入材料存在的主要问题是腐蚀，腐蚀一方面导致腐蚀产物进入人体，引起严重的生理危害，如组织毒化、细胞畸变等；另一方面造成植入假体的松脱、早期断裂等失效行为。钛合金植入物的耐腐蚀性随其表面粗糙度的提高而降低，其中平滑表面和微观粗糙表面具有良好的耐腐蚀性和较低的离子释放率。因此，对医用钛合金植入物进行适当的表面光整处理显得尤为必要。
由于钛合金的切削性能差，表面极易氧化，目前国内外通常采用精锻、真空精铸、冷（热）镦等进行成形加工，并采用化学抛光、机械抛光、电解抛光等方法进行表面光整加工。然而由于钛合金植入体加工后的毛刺较多，氧化膜较厚，作为人造关节植入人体中，材料的表面粗糙度较高，很容易导致血栓的形成。因此，对医用钛合金植入物的平滑表面和微观粗糙表面提出了更高的要求。
 技术问题
本发明的目的在于提供一种人工膝关节胫骨托用磁流变抛光加工装置，能够有效解决现有人工膝关节胫骨托表面粗糙度无法达到要求的问题。
 技术解决方案
为了解决上述技术问题，本发明是通过以下技术方案实现的：一种人工膝关节胫骨托用磁流变抛光加工装置，包括机架、上磨盘、线圈、磁流变抛光液、内齿轮、外托盘、内托盘、太阳轮和游星轮，所述上磨盘可拆卸固定在机架上，所述内齿轮转动设置在机架上，所述内齿轮内设有位于同一水平面的太阳轮和至少一个游星轮，所述内齿轮与游星轮啮合，所述游星轮与太阳轮啮合，所述游星轮上开有若干防止待加工抛光件的放置孔，所述磁流变抛光液充入上磨盘与游星轮之间，所述线圈固定在所述上磨盘上。
优选的，所述内齿轮包括内轮体和轮齿，所述内轮体设有顶部开口的内腔，所述轮齿固定在内腔侧壁上，所述内轮体的底部中心设有远离内轮体方向延伸的第一轮轴。
优选的，所述轮齿下方的内腔侧壁上还固定有向内轮体中心延伸的外托盘，用以托举游星轮。
优选的，所述内轮体的内腔内设有收集磁流变抛光液的收集盒。
优选的，所述收集盒中部设有筒状的空心支柱，所述太阳轮的中心设有向下延伸的第二轮轴，所述第二轮轴通过轴承与空心支柱连接。
优选的，所述太阳轮底部设有沿径向向外延伸内托盘，用以托举游星轮。
优选的，所述收集盒设有从中心向四周高度逐渐降低的斜面，所述斜面的最低点设有排液孔，所述排液孔贯穿内轮体的底部，所述排液孔内设有排液塞。
优选的，所述放置孔与待加工的人工膝关节胫骨托外形相适配。
 有益效果
与现有技术相比，本发明的优点是：
通过设置游星轮，位于太阳轮和内齿轮之间，在公转的同时还能自传，通过线圈使磁流变抛光液转为固态形式，对放置在游星轮上的人工膝关节胫骨托进行抛光，由于磁流变抛光液在受磁场前为液态形式，可以很好的适配人工膝关节胫骨托的形状，而受磁之后变为固态形式，有效的提高了抛光精度。
所述内齿轮包括内轮体和轮齿，所述内轮体设有顶部开口的内腔，所述轮齿固定在内腔侧壁上，所述内轮体的底部中心设有远离内轮体方向延伸的第一轮轴。带内腔顶部开口的内轮体除了作为齿轮传动外，还可以将太阳轮、游星轮等都放置在其中进行保护。
所述轮齿下方的内腔侧壁上还固定有向内轮体中心延伸的外托盘，用以托举游星轮。通过外托盘，对游星轮进行托举，保持游星轮的稳定。
所述内轮体的内腔内设有收集磁流变抛光液的收集盒。通过收集盒，收集落下的磁流变抛光液，循环利用。
所述收集盒中部设有筒状的空心支柱，所述太阳轮的中心设有向下延伸的第二轮轴，所述第二轮轴通过轴承与空心支柱连接。通过空心支柱与第二轮轴配合，将太阳轮撑起，保证太阳轮能沿自身轴线转动。
所述太阳轮底部设有沿径向向外延伸内托盘，用以托举游星轮。通过内托盘对游星轮的另一侧进行托举。
所述收集盒设有从中心向四周高度逐渐降低的斜面，所述斜面的最低点设有排液孔，所述排液孔贯穿内轮体的底部，所述排液孔内设有排液塞。设置斜面更好的将收集的磁流变抛光液集中到一起，然后通过排液孔排出便于汇总。
    所述放置孔与待加工的人工膝关节胫骨托外形相适配。更好的固定住人工膝关节胫骨托。
 附图说明
图1为本发明一种人工膝关节胫骨托用磁流变抛光加工装置的结构示意图；
图2为本发明中内齿轮、游星轮、太阳轮组合后的俯视图。
 本发明的最佳实施方式
在此处键入本发明的最佳实施方式描述段落。
 本发明的实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性 或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定” 等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
参阅图1、图2为本发明一种人工膝关节胫骨托用磁流变抛光加工装置的实施例，一种人工膝关节胫骨托用磁流变抛光加工装置，包括机架、上磨盘1、线圈2、磁流变抛光液3、内齿轮4、外托盘5、内托盘6、太阳轮9和游星轮10，所述上磨盘1可拆卸固定在机架上，可拆卸的方式可以采用螺栓固定等方式，所述内齿轮4转动设置在机架上，所述内齿轮4内设有位于同一水平面的太阳轮9和至少一个游星轮10，所述内齿轮4与游星轮10啮合，所述游星轮10与太阳轮9啮合，所述游星轮10上开有若干防止待加工抛光件100的放置孔12，所述放置孔12与待加工的人工膝关节胫骨托外形相适配，所述磁流变抛光液3充入上磨盘1与游星轮10之间，所述线圈2固定在所述上磨盘1上。
进一步，所述内齿轮4包括内轮体41和轮齿42，所述内轮体41设有顶部开口的内腔43，所述轮齿42固定在内腔43侧壁上，所述内轮体41的底部中心设有远离内轮体41方向延伸的第一轮轴44，第一轮轴44可以与电机连接进行传动，而且第一轮轴44可以转动设置在机架上。
为了更好的固定住游星轮10，防止其坠落到内腔43中，所述轮齿42下方的内腔43侧壁上还固定有向内轮体41中心延伸的外托盘5，用以托举游星轮10，再进一步，所述太阳轮9底部设有沿径向向外延伸内托盘6，用以托举游星轮10。而此时的太阳轮9，通过轴承7转动连接在空心支柱81上，具体的，所述内轮体41的内腔43内设有收集磁流变抛光液3的收集盒8，所述收集盒8中部设有筒状的空心支柱81，所述太阳轮9的中心设有向下延伸的第二轮轴91，所述第二轮轴91通过轴承7与空心支柱81连接。
而为了方便收集落下的磁流变抛光液3，所述收集盒8设有从中心向四周高度逐渐降低的斜面82，所述斜面82的最低点设有排液孔，所述排液孔贯穿内轮体41的底部，所述排液孔内设有排液塞13。
工作过程为：抛光件100为医疗人工膝关节胫骨托，放置到游星轮10设置的多个放置孔12内，将液体磁流变抛光液3注入，线圈2通电，上磨盘1产生磁场，液体磁流变抛光液3变为类固体链状磁流变刷，启动内齿轮4，带动游星轮10自转和公转，设置在游星轮10放置孔12内的抛光件100自转同时公转，此时上磨盘1固定在机架上不动，磁流变刷可对抛光件100进行抛光。加工完成后，线圈2断电，托架收集盒8收集液体磁流变抛光液3，进行再利用。
通过设置游星轮10，位于太阳轮9和内齿轮4之间，在公转的同时还能自传，通过线圈2使磁流变抛光液3转为固态形式，对放置在游星轮10上的人工膝关节胫骨托进行抛光，由于磁流变抛光液3在受磁场前为液态形式，可以很好的适配人工膝关节胫骨托的形状，而受磁之后变为固态形式，有效的提高了抛光精度。
以上所述仅为本发明的具体实施例，但本发明的技术特征并不局限于此，任何本领域的技术人员在本发明的领域内，所作的变化或修饰皆涵盖在本发明的专利范围之中。
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Claims (8)

  1. 一种人工膝关节胫骨托用磁流变抛光加工装置，其特征在于：包括机架、上磨盘（1）、线圈（2）、磁流变抛光液（3）、内齿轮（4）、太阳轮（9）和游星轮（10），所述上磨盘（1）可拆卸固定在机架上，所述内齿轮（4）转动设置在机架上，所述内齿轮（4）内设有位于同一水平面的太阳轮（9）和至少一个游星轮（10），所述内齿轮（4）与游星轮（10）啮合，所述游星轮（10）与太阳轮（9）啮合，所述游星轮（10）上开有若干防止待加工抛光件的放置孔（12），所述磁流变抛光液（3）充入上磨盘（1）与游星轮（10）之间，所述线圈（2）固定在所述上磨盘（1）上。
  2. 如权利要求1所述的一种人工膝关节胫骨托用磁流变抛光加工装置，其特征在于：所述内齿轮（4）包括内轮体（41）和轮齿（42），所述内轮体（41）设有顶部开口的内腔（43），所述轮齿（42）固定在内腔（43）侧壁上，所述内轮体（41）的底部中心设有远离内轮体（41）方向延伸的第一轮轴（44）。
  3. 如权利要求2所述的一种人工膝关节胫骨托用磁流变抛光加工装置，其特征在于：所述轮齿（42）下方的内腔（43）侧壁上还固定有向内轮体（41）中心延伸的外托盘（5），用以托举游星轮（10）。
  4. 如权利要求2所述的一种人工膝关节胫骨托用磁流变抛光加工装置，其特征在于：所述内轮体（41）的内腔（43）内设有收集磁流变抛光液（3）的收集盒（8）。
  5. 如权利要求4所述的一种人工膝关节胫骨托用磁流变抛光加工装置，其特征在于：所述收集盒（8）中部设有筒状的空心支柱（81），所述太阳轮（9）的中心设有向下延伸的第二轮轴（91），所述第二轮轴（91）通过轴承（7）与空心支柱（81）连接。
  6. 如权利要求5所述的一种人工膝关节胫骨托用磁流变抛光加工装置，其特征在于：所述太阳轮（9）底部设有沿径向向外延伸内托盘（6），用以托举游星轮（10）。
  7. 如权利要求4所述的一种人工膝关节胫骨托用磁流变抛光加工装置，其特征在于：所述收集盒（8）设有从中心向四周高度逐渐降低的斜面（82），所述斜面（82）的最低点设有排液孔，所述排液孔贯穿内轮体（41）的底部，所述排液孔内设有排液塞（13）。
  8. 如权利要求1所述的一种人工膝关节胫骨托用磁流变抛光加工装置，其特征在于：所述放置孔（12）与待加工的人工膝关节胫骨托外形相适配。
     
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