Advanced Manufacture Technology Center, China Academy of Machinery Science & Technology

Beijing National Innovation Institute of Lightweight Ltd.

Postech Academy-industry Foundation

Taian Companion Machinery Co., Ltd.

Advanced Manufacture Technology Center China Academy Machinery Science and Technology

Zhongde Shan

Feng Liu

Limin Liu

Zhilin Lin

Xiaoli Dong

Li Zhan

Xiwen Li

Juanjuan Qiao

Shaokai Chen

Zheng Wang

Shuai Zhang

Chao Jiang

Woon Bong Hwang

Jun Dai

Shuguang Li

Zhou Li

Haibo Chen

Shaoyan Qin

Won Shik Kwak

Liu Li

Milan Zhang

Xinya Li

Xianglei Wang

Wanhua Cai

Byung Rak Park

Yongsheng Ye

Qun Zhang

Shuangfeng Wu

Minju Shen

Lin Liu

Duifan Chen

Wanran Yang

Fuzhen Sun

Huairong Kang

Xiaochuan Wu

Qingfu Lu

A method for weaving a three-dimensional preform includes the following steps: decomposing and determining performance requirements of different functional locations of the parts; selecting guide sleeves and fibers of each of the functional locations and designing a parameter; selecting guide sleeves and fibers of a transition area and designing a parameter, thereby implementing smooth transition of the transition area; determining a weaving sequence according to layouts of the guide sleeves and winding manners of the fibers in the functional locations and the transition area to generate a fiber iterative instruction for layer-by-layer weaving; arranging guide sleeves according to design requirements of the functional locations and the transition area to generate a guide sleeve array; and driving a weaving mechanism to select different fibers for subarea weaving layer by layer to obtain the three-dimensional preform having a gradient structure.

Method for weaving three-dimensional preform having gradient structure

Provided is a sand mold digital flexible extrusion near-net forming optimization method based on a search algorithm. The method includes: dividing a sand mold Computer Aided Design (CAD) 3D model near-net forming region; acquiring a curved surface function of a near-net forming sand mold CAD 3D model cavity; constructing a flexible extrusion array envelope volume optimization objective function; determining a valid optimization interval R; translating the position of a sand mold CAD 3D model cavity to a search initial position; performing a global search in the valid optimization interval R, comparing flexible extrusion array envelope volume values, and saving the larger value as V(x,y)and the corresponding position as (x,y); and completing the search, translating the position of the near-net forming sand mold CAD 3D model cavity to (x,y), and executing a flexible extrusion array shape adjusting procedure.

Sand mold digital flexible extrusion near-net forming optimization method based on search algorithm

Disclosed is a condensate water control dryer. The condensate water control dryer includes: a dryer main body which has a drying space formed therein; a first condensate water panel which is attached, in a first direction, to an inner wall surface of the drying space of the dryer main body and has a superhydrophilic surface; a second condensate water panel which is attached, in a second direction that intersects the first direction, to the inner wall surface of the drying space of the dryer main body and has a superhydrophobic surface; and attachment members which attach the first condensate water panel and the second condensate water panel to the inner wall surface of the dryer main body.

Condensate water controlling type dryer

A method for manufacturing a mechanical part by hot stamping, and a mold and a system thereof. The method includes: heating a steel plate blank at a predetermined heating temperature; and placing the steel plate blank into a mold of the mechanical part, and stamping the steel plate blank to form wrinkles at a rounded corner of the mold and form the mechanical part in the mold: wherein, the mold of the mechanical part includes a female mold and a male mold, a stamping gap configured to accommodate the steel plate blank is provided between the female mold and the male mold, and a width of the stamping gap at the rounded corner of the mold is larger than a thickness of the wrinkles.

Method for manufacturing mechanical parts, and mold and system thereof

The disclosure provides a forming machine without pattern casting, including: a multi-axis motion system; a cutting system, connected with the multi-axis motion system; a driving system, driving the multi-axis motion system to move; and a machining base, wherein the machining base includes a fixing seat and a turnover mechanism, wherein the turnover mechanism is revolvably connected with the fixing seat. Since the forming machine without pattern casting of the disclosure adopts a tilting type and needs no working platform, most of the waste sand grains generated from cutting fall freely into the shakeout groove arranged below the fixing seat, and will not fly into the multi-axis motion system, and will not cause stop failure; thus the precision and service life of the forming machine without pattern casting are improved.

Forming machine without pattern casting

The disclosure provides a containerless casting forming machine, including: a multi-axis motion system which at least includes an X-axis motion system, a Y-axis motion system and a Z-axis motion system, and a workbench which is below the multi-axis motion system; and further includes: a moving platform system below the workbench, including a moving bracket which can reciprocate along the direction parallel to the X axis, a lifting device provided on the moving bracket, which is used for lifting and supporting the workbench to enable the linkage between the workbench and the moving bracket. The containerless casting forming machine of the disclosure can move the workbench without a lifting tool, and machine a casting mold with a large size and a complex cavity, and causes little pollution to the environment.

A multi-dimensional weaving shaping machine of composite materials, including: a guide template including a plurality of cylindrical guiders arranged according to the geometrical shape of a prefabricated member; an electrical control three-dimensional motion mechanism including: a control signal receiving terminal configured to receive motion control signals corresponding to the geometrical shape of the prefabricated member; and a three-dimensional motion output terminal configured to form a motion track according to the motion control signals; a weaving needle being connected with the three-dimensional motion output terminal and making weave fibers distribute among the cylindrical guiders according to the geometrical shape of the prefabricated member. The multi-dimensional weaving shaping machine of composite materials of the disclosure utilizes the cylindrical guiders and the electrical control three-dimensional motion mechanism to make the weaving needle to drive braided cords to distribute among the cylindrical guiders along the motion track to form the guide template.

Multi-dimensional weaving shaping machine of composite materials

A locating beam and a robot linear motion unit having the same, wherein the locating beam comprises a first support beam and a second support beam which are parallel to each other, a crossbeam connected between the first support beam and the second support beam and is vertical to the beams, and a joints between the crossbeam and the beams is provided with a right-angle connecting piece. The robot linear motion unit includes a motion track and a transmission mechanism arranged along the extension direction of the motion track, and the motion track is arranged on a surface of the locating beam. Arranging the crossbeam and right-angle connecting pieces between the first support beam and the second support beam in the locating beam, improves the mechanical structure strength, reduces deflection deformation and twist deformation of the locating beam, and improves the impact resistance of the robot linear motion unit.

Locating beam and robot linear motion unit having the same

A three-dimensional weave forming equipment for composites mainly comprises a main body portion and a specific numerical control software for three-dimensional weaving process. The main body portion comprises a movement system for a controllable digital template, a movement system for a pickup device and a movement control system for a guiding sleeve. Compared with the existing three-dimensional weave-forming equipment, the three-dimensional weave-forming equipment for composites is highly automatic. Products made by the equipment are smooth at inner and outer surfaces, and have advantages of high precise dimension, low porosity and stable performance. And it can be reinforced partially and have directional property according to requirements of design. So problems of simple cross-section of the finished part and too much pores in the products, which manufactured by the existing three-dimensional weave forming equipment are solved. The three-dimensional weave forming equipment for composites is especially suitable for producing products with large dimension and complex external structure.

Three-dimensional weave-forming equipment for composites

The invention relates to a three-dimensional weave-forming method for composites, comprising the following steps: dividing the CAD model into layers according to the structure of a component, designing by layers and optimizing weaving paths; disposing weaving guiding poles on a controllable digital layout template according to preset rules and intervals; In the direction Z, passing guiding sleeves through the hollow guiding poles and evaginating the guiding sleeves, and then fixing the guiding sleeves onto the controllable digital layout template; selecting filaments to weave; after the weaving of one layer thickness is finished, descending the template in the thickness by one layer to drive the guiding sleeves to expose outside a preset distance to form a new layer of layout template; weaving layer by layer until the whole component is finished; dismounting the component and sewing; and dipping the component in resin and finishing the manufacture of the part. According to the method, the rapid prototyping technology and the weaving technology are organically combined, so that the three-dimensional weaving of components with complex function is realized. Simultaneously, the preparation of composite and the forming of components are integrated, so that the manufacture of functional components with complex structure is realized.

Three-dimensional weave-forming method for composites

A digital processing method of a large or medium-size sand mold includes inverting a three-dimensional CAD model of a mold into a numeric controlling code, putting a prepared sand blank on a hollow grid-shaped processing platform to proceed the digital milling procedure, bringing away waste sand generated during processing by high pressure gas blown out from a nozzle near a cutter and the waste sand entering to a collecting device below the processing platform. A device for carrying out the method is disclosed. The method and the device reduce the processing steps.

Digital processing method and device of large or medium-size sand mold

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Beijing, China

Zhongde Shan