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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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12-09-2017 дата публикации

A biological 3 D printing culture integration system and method

Номер: CN0105524831B
Автор: 王玲, 方奥, 申皓, 李涤尘, 同治强
Принадлежит:

... 本发明构建了种生物3D打印培养体化系统及方法，解决了生物打印与培养系统分离所面临的环境污染及设备腐蚀问题；该系统能够实现各种细胞、细胞支架在生物培养系统中同步打印，即3D打印培养的体化，保证打印过程中细胞的活性和打印后细胞的功能及分化，且避免受到外界环境的影响；该系统采取培养与打印驱动分离式设计，将打印喷头卡具嵌入生物培养系统，在保证无阻碍打印的基础上，避免打印设备及外界环境对无菌培养环境的破坏，可以实现高精度细胞打印和培养的体化；该系统降低生物培养温湿度对工作台组件在材料、尺寸、设计等方面的特殊要求，提高工作台的定位精度、速度等，提升驱动模块的使用寿命，大大降低了成本。 ...

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Номер записи: 1
03-01-2019 дата публикации

METHOD FOR CONTROLLED COLD DEPOSITION 3D PRINTING FACING PEEK MATERIAL

Номер: WO2019000966A1
Автор: YANG, Chuncheng, CAO, Yi, SHI, Changquan, LI, Dichen
Принадлежит:

A method for controlled cold deposition 3D printing facing a polyetheretherketone (PEEK) material: first forming a desired stable global temperature field in a 3D printer inner working cavity (2); next forming a real-time, controllable local quick cooling field near a 3D printing head (5); 3D printing a PEEK material (11) such that the PEEK material (11) experiences different cooling rates and steady-state temperatures during extrusion, thereby forming different crystallinities at said locations; or controlling the moving speed and printing path of the 3D printing head (5) that has been heated to a high temperature within the area so as to form a PEEK material (11) having different crystallinities in different printing areas; finally, directly using a PEEK part (13) or performing corresponding heat treatment according to requirements. A PEEK part having different crystallinities and different performances is printed by means of the 3D printing method of using global temperature control, ...

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Номер записи: 2
09-06-2023 дата публикации

Vibration isolation metamaterial structure design method based on machine learning

Номер: CN116245029A
Автор: WU LINGLING, ZHAO ZHE, YANG LAIXIA, TIAN XIAOYONG, LIU TENGFEI, LI DICHEN
Принадлежит:

The invention relates to a machine learning-based vibration isolation metamaterial structure design method, which comprises the following steps of: by adopting a machine learning method, selecting a basic optimization model of a vibration isolation metamaterial structure by taking a mechanical metamaterial as an object, and constructing a fitness function adaptive to the required structural equivalent stiffness; constructing a plurality of initial configurations by adopting a genetic algorithm according to each to-be-optimized parameter of the basic optimization model; then using finite element simulation software to evaluate the fitness function of each genetic algorithm configuration; screening a configuration with a large fitness function, and reserving the configuration as a parent of a next-generation configuration; repeating until the fitness function between two adjacent generations reaches a required threshold value, and obtaining an optimal vibration isolation metamaterial structure ...

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Номер записи: 3
28-04-2023 дата публикации

Double-chain bionic radiation shielding structure and manufacturing method thereof

Номер: CN116031004A
Автор: CAO YI, YANG HAO, WAN KUN, ZHAO YIFAN, LI DICHEN
Принадлежит:

The invention discloses a double-chain bionic radiation shielding structure and a manufacturing method thereof, the double-chain bionic radiation shielding structure comprises a plurality of shielding units arranged in an array, each shielding unit comprises a first single chain used for absorbing gamma rays, a second single chain used for absorbing neutrons and a cladding used for playing a supporting role and slowing down the neutrons, the first single strand and the second single strand are spirally wound according to a double-strand DNA spiral structure to form a cylindrical core body, and the cladding wraps the outer side of the core body, so that the outer side of the shielding unit is in a regular prism shape. The invention designs a light high-efficiency polymer matrix radiation shielding structure capable of realizing moderation and timely absorption of neutrons and gamma rays in all directions, and provides an additive manufacturing method adaptive to the shielding structure aiming ...

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Номер записи: 4
12-09-2017 дата публикации

A continuous fiber reinforced composite material 3 D printing multi-wire feeding print head

Номер: CN0105172144B
Автор: 田小永, 刘腾飞, 杨春成, 李涤尘
Принадлежит:

... 种连续纤维增强复合材料3D打印的多级送丝打印头，包括固定于级加热块上表面的纤维导管，纤维导管内孔道形成纤维通道，级喉管固定于级加热块侧，级喉管内孔道形成级内孔道，高分子材料从级内孔道穿过进入级加热块熔融腔内；级加热块固定于二级加热块上方，二级喉管固定于二级加热块侧，二级喉管内孔道形成二级内孔道，高性能热塑性材料从二级内孔道穿过进入二级加热块熔融腔内；以此相同的结构类推，最终所有的加热块固定于末级加热块上面，喷嘴固定于末级加热块下表面，本发明采用多级送丝打印头，很好地将连续纤维用基体材料进行多级包覆，得到具有良好综合性能的连续纤维增强复合材料零件。 ...

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Номер записи: 5
14-07-2023 дата публикации

Biological fusion type three-dimensional neural electrode

Номер: CN116421193A
Автор: WANG LING, LI DICHEN, ZHANG CHENRUI, YAO SIQI, HAO ZHIYAN, WANG SEN
Принадлежит:

The invention discloses a biological fusion type three-dimensional neural electrode. The biological fusion type three-dimensional neural electrode comprises a depth sensing unit and a plane sensing unit. Local field potential of a cortical surface layer and deep electroencephalogram composite signals can be obtained at the same time, and good biocompatibility and compliance are achieved. The maximum length of the plane sensing unit is 5-20 mm, the thickness is smaller than 100 microns, in order to guarantee the precision of the neural electrode, the minimum diameter of the sensing line is smaller than or equal to 50 microns, the diameter of the depth sensing unit is smaller than or equal to 75 microns, and the implantation depth range is 2-5 mm. The number of sensing channels of the plane sensing unit part is 16-50, and the number of sensing channels of the depth sensing unit part is 25-60. In the manufacturing process, coupling structures such as a microchannel are reserved on the plane ...

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Номер записи: 6
15-08-2023 дата публикации

Multi-motion-degree-of-freedom biological hybrid robot, working method and manufacturing method

Номер: CN116587302A
Автор: GAO LIN, LIANG TUO, LI DICHEN, LIU ZIWEI, ZHANG YUAN, CHENG WEI, LIAN QIN, XIE XUANXUAN, FENG JUNNAN
Принадлежит:

The invention provides a multi-motion-degree-of-freedom biological hybrid robot, a working method and a manufacturing method. The multi-motion-degree-of-freedom biological hybrid robot comprises a deformation module, a driving module and an orientation module. The driving module is axially arranged on the deformation module in a surrounding and sleeving manner, and the orientation module is adhered to the deformation module and is connected with the edge of the front end of the deformation module; the driving module is an engineering muscular tissue, and the driving module controls the deformation module through contraction of different parts of the muscular tissue; the deformation module is of a deformation structure similar to water elastic folded paper. Three-degree-of-freedom movement such as advancing, steering and overturning can be achieved by stimulating different parts of the driving module through the electrodes, and the problem that work cannot be completed in a single-degree-of-freedom ...

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Номер записи: 7
25-08-2004 дата публикации

刀切型纸层叠快速成形机

Номер: CN0001522838A
Автор: LI DICHEN LU, DICHEN,LU LI, 李涤尘
Принадлежит:

The present invention belongs to a low-cost quick lamination making equipment for making paper product raw type and model. It uses cutter with adaptive steering capability as layer-by-layer cutting tool of paper material, and is formed from cutter device, cutter controller and XY movement mechanism driven by step-by-step motor. Said invention utilizes a precision switch and a working table movement controlled by step-by-step motor to form said invented high-grade measurement system. Said mechanism structure is simple and low in cost.

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Номер записи: 8
04-05-2017 дата публикации

3D PRINTING DEVICE HAVING SINGLE NOZZLE HEAD FOR USE WITH MULTIPLE MATERIALS IN MULTIPLE SCALES AND WORKING METHOD THEREFOR

Номер: WO2017071388A1
Автор: LAN, Hongbo, LI, Di Chen
Принадлежит:

Provided are a 3D printing device having a single nozzle head for use with multiple materials in multiple scales and a working method therefor. The device comprises a base (1), a worktable (2), a substrate carrier (3), a substrate (4), a power supply (5), a nozzle head (7) and a support (12). The base (1) is mounted at the bottom; the support (12) and the worktable (2) are both mounted above the base (1); and the nozzle head (7) is mounted on the support (12). The substrate carrier (3) is fixed on the worktable (2), and the substrate (4) is fixed above the substrate carrier (3). An anode and a cathode of the power supply (5) are connected to a nozzle (19) of the above-mentioned nozzle head (7) and the substrate carrier (3) respectively. Relative movements in an x-direction, a y-direction and a z-direction between the nozzle head (7) and the substrate (4) are realized through relative movements between the worktable (2) and the support (12). The nozzle head (7) is provided with multiple ...

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Номер записи: 9
03-01-2019 дата публикации

HEAT TREATMENT METHOD FOR 3D PRINTED PEEK MATERIAL PART

Номер: WO2019000965A1
Автор: YANG, Chuncheng, CAO, Yi, SHI, Changquan, LI, Dichen
Принадлежит:

A heat treatment method for a 3D printed PEEK material part, comprising: firstly putting a PEEK material part made by fused deposition 3D printing into an oven to dry the PEEK material part; then using a whole-piece heat treatment method, a surface heat treatment method, or a local heat treatment method to obtain a corresponding PEEK material part; finally performing an aging treatment on the PEEK material part and directly applying same to practical use. Different areas of the PEEK material are treated at different temperatures for different periods of time, and finally a PEEK material part which is required and can be applied to practical use is formed, the process being simple.

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Номер записи: 10
09-06-2023 дата публикации

Natural color ceramic false tooth and photocuring forming method thereof

Номер: CN116236305A
Автор: LIAN QIN, WANG SHUAIWEI, LI DICHEN, GUAN ZHIQIANG, ZHENG YU, QI CHENYUN, MA WEIGANG, QI SHUHAO, SHI CHANGQUAN
Принадлежит:

The invention discloses a natural color ceramic false tooth and a photocuring forming method thereof, and belongs to the technical field of photocuring forming. According to the method disclosed by the invention, different types of natural-color ceramic denture slurry are adopted, a multi-material surface exposure printer is used, and different ceramic slurry is adopted for printing according to the denture height, so that a natural-color ceramic denture biscuit is obtained; carrying out pyrolysis on the obtained ceramic false tooth biscuit so as to carbonize organic matters in the ceramic false tooth biscuit; and sintering the pyrolyzed natural color ceramic false tooth to obtain the formed natural color ceramic false tooth. By adopting a multi-material surface exposure forming technology, different areas on one false tooth can have different colors, so that the color of the false tooth is consistent with that of a natural tooth; according to the zirconia ceramic false tooth with multiple ...

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Номер записи: 11
18-08-2023 дата публикации

High-safety integrated fuze structure with bionic design

Номер: CN116608745A
Автор: LI DICHEN, WANG LEILEI, WANG LING, TONG ZHIQIANG
Принадлежит:

The invention discloses a bionically designed high-safety integrated fuze structure, and solves the problems of large assembly error, long production period and high cost caused by manual assembly of internal parts in an existing fuze. The device comprises a shell and an internal structure, the internal structure comprises an upper plate, a lower plate, a supporting table, a firing pin and a detonator base, the upper plate and the lower plate are connected through a connecting column, the connecting column is integrally bent, the diameter of the connecting column gradually decreases from the middle to the two ends, the two ends of the connecting column are connected with the upper plate and the lower plate respectively, and the outer edge of the bottom of the supporting table is connected with the inner wall of the shell. The upper part of the detonator seat is connected with the interior of the cavity of the supporting table, the lower part of the detonator seat is connected with the inner ...

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Номер записи: 12
24-03-2004 дата публикации

自固定式人工椎体及其安装工具

Номер: CN0001483389A
Автор: DICHEN LI, ZHEN WANG, CN SUN MINGLIN ET AL, LI DICHEN, WANG ZHEN, SUN MINGLIN ET AL. (CN0, 李涤尘
Принадлежит:

The present invention relates to a self-fixed artificial vertebral body and its mounting tool. It is formed from an intermediate cover, two side covers and two end cover terminal laminas which are assembled together. Its whole structure is up-down symmetrical, its interior is hollow, its length is adjustable, and its middle portion can be bent at a certain angle so as to ensure spinal physiological curve. Its mounting tool includer manual ring drill, curved wrench and sighting device. Said invention also provides its mounting method and steps.

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Номер записи: 13
10-03-2004 дата публикации

个体化人工半关节面替代物制备方法及其人工半关节替代物

Номер: CN0001480111A
Автор: LI DICHEN, WANG ZHEN, SUN MINGLIN, DICHEN LI, ZHEN WANG, MINGLIN SUN, 李涤尘
Принадлежит:

A substitute of personalized artificial semi-facies articularis is composed of semi-articulation body, bioconnector, connecting pile for intramedullary needle, and locator for operation. An artificial articulation is prepared through CT scanning to articulation of patient, image processing, 3D reconfigurating by software, designing semi-articulation body, designing said bioconnector, connecting pile and locating die, fast shaping to obtain prototype, precise fusion casting, and assembling.

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Номер записи: 14
25-08-2004 дата публикации

刀切型纸层叠快速成形机的送纸机构

Номер: CN0001522942A
Автор: LI DICHEN LU, DICHEN,LU LI, 李涤尘
Принадлежит:

The present invention relates to a paper-feeding mechanism for knife-cutting paper stencil stratification quick forming equipment. Said mechanism can be used for implementing requirements for automatically feeding paper and providing paper-cutting tensile force. Said mechanism is formed from an oblique paper-guiding plate, a pair of drive roller group, paper-guiding roller group and paper band raw material roll, the paper band raw material roll is placed on the supporting frame, and the paper band passed through the drive roller group can be fed by means of friction force between said paper band and drive roller group. The step-by-step motor is directly connected with drive roller group, and a computer can be used to control feeding length and control motor to provide paper band tensile force for cutting paper.

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Номер записи: 15
08-08-2023 дата публикации

Hot auxiliary material extrusion direct-writing 3D printing method for continuous fiber reinforced ceramic

Номер: CN116551808A
Автор: LU ZHONGLIANG, LI SAI, ZHANG HAITIAN, MIAO KAI, LI DICHEN
Принадлежит:

The invention relates to a continuous fiber reinforced ceramic thermal auxiliary material extrusion direct-writing molding 3D printing method, which comprises the following steps: (1) preparing thermoplastic ceramic ink with the melting temperature of 75-90 DEG C, and injecting the thermoplastic ceramic ink into a heatable direct-writing molding charging barrel; (2) heating the heatable direct-writing forming charging barrel to a specified temperature, enabling the ceramic ink to be in a molten state, supplying the ceramic ink to a coaxial nozzle by an extrusion system, fully combining the ceramic ink with continuous fibers, co-extruding into filaments, and stacking layer by layer to form a continuous fiber reinforced ceramic composite material preform; and (3) degreasing, vacuum impregnating and sintering the continuous fiber reinforced ceramic composite material preform to obtain the continuous fiber reinforced ceramic matrix composite material. According to the preparation method, the ...

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Номер записи: 16
07-04-2023 дата публикации

Scraper device for mask photocuring 3D printer and mask photocuring 3D printer

Номер: CN115922872A
Автор: LIAN QIN, QI SHUHAO, LI DICHEN, QI CHENYUN, ZHENG YU, MA WEIGANG, YANG CHUNCHENG, SHI CHANGQUAN
Принадлежит:

The invention discloses a mask photocuring 3D printer scraper device and a mask photocuring 3D printer, the mask photocuring 3D printer scraper device comprises a scraper frame, a slurry flattening scraper and a residue cleaning scraper, the slurry flattening scraper is connected to the scraper frame, the residue cleaning scraper is located on one side of the slurry flattening scraper, and the slurry flattening scraper is connected to the scraper frame. The residue cleaning scraper is connected with the slurry flattening scraper, the bottom of a cutting edge of the slurry flattening scraper is located in a first horizontal plane, the bottom of a cutting edge of the residue cleaning scraper is located in a second horizontal plane, the first horizontal plane is higher than the second horizontal plane, and the height difference is not smaller than the thickness of a printing layer. A slurry conveying notch is formed in the position, close to the end, of the blade of the residue cleaning scraper ...

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Номер записи: 17
13-07-2021 дата публикации

一种碳化硅陶瓷基复合材料结构/功能件的增材制造方法

Номер: CN111635241B
Автор: 鲁中良, 周航, 王成玉, 邱绍宇, 李聪, 孙超, 张瑞谦, 苗恺, 潘小强, 丁阳, 朱丽兵, 朱勇辉, 李涤尘
Принадлежит: 西安交通大学, 中国核动力研究设计院, 上海核工程研究设计院有限公司

... 本发明公开了一种碳化硅陶瓷基复合材料结构/功能件的增材制造方法，包括以下步骤：称取碳化硅、碳纤维和硅微粉，真空烘干；碳纤维进行化学气相沉积处理，使碳纤维的表面形成无定形碳；碳化硅进行化学气相沉积处理，使碳化硅的表面形成硅薄膜；硅微粉、碳纤维和碳化硅混合均匀，获得混合粉；设置成形参数及扫描策略，将结构/功能件模型输出为STL格式并导入激光选区熔化成形设备；将混合粉通入激光选区熔化成形设备，在保护气的气氛下进行结构/功能件成形，实现碳化硅基陶瓷结构/功能件的增材制造。本发明安全高效，制造的结构/功能件致密度高且组织均匀，可实现近净尺寸成型，无需后处理。 ...

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Номер записи: 18
17-08-2021 дата публикации

Multi-printing-head integrated truss 3D printer with variable radius and using method thereof

Номер: CN113263723A
Автор: TIAN XIAOYONG, KANG YOUWEI, ZHANG MINGJIE, LIU TENGFEI, ZHOU ZUOXIN, DING JIFENG, GAO FENG, LI DICHEN, 田小永, 康友伟, 张明杰, 刘腾飞, 周佐新, 丁继锋, 高峰, 李涤尘
Принадлежит:

The invention relates to a multi-printing-head integrated truss 3D printer with a variable radius and a using method thereof. The multi-printing-head integrated truss 3D printer comprises a rack, three groups of edge forming module, a surrounding forming module and an angle adjusting module, the surrounding forming module and the angle adjusting module are connected to the rack, the surrounding forming module, the angle adjusting module and the edge forming module are connected, the surrounding forming module is composed of a first clockwise-cycle surrounding sub-module, a second clockwise-cycle surrounding sub-module and a reverse-cycle surrounding sub-module from bottom to top, the angle adjusting module is composed of three groups of upper adjusting modules and three groups of lower adjusting modules which are installed on the rack and are distributed along the central axis of the rack at equal intervals in an array mode, the lower adjusting modules and the corresponding upper adjusting ...

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Номер записи: 19
14-04-2023 дата публикации

Slurry tank for bottom exposure photocuring 3D printing as well as preparation method and application of slurry tank

Номер: CN115958791A
Автор: LIAN QIN, GUAN ZHIQIANG, LI DICHEN, WANG SHUAIWEI, ZHENG YU, QI CHENYUN
Принадлежит:

The invention discloses a bottom exposure photocuring 3D printing slurry tank as well as a preparation method and application thereof, and belongs to the technical field of 3D printing. According to the preparation method of the bottom exposure photocuring 3D printing slurry tank, the two surfaces of the silicon-containing or fluorine-containing film are coated with the functional agent respectively, the modified film is obtained after drying, then the modified film is arranged on the light-transmitting bottom plate at the bottom of the slurry tank body, and the bottom exposure photocuring 3D printing slurry tank is obtained. The functional agent with low molecular weight is used as a contact surface with the curing layer as a release agent, so that the adhesion effect between the curing layer and the film in the printing process is reduced; the functional agent with low molecular weight is used as the contact surface of the antistatic agent modified film and the slurry tank, so that the ...

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Номер записи: 20