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Universal and efficient hybrid modeling and direct slicing method for additive manufacturing processes

Advances in Manufacturing 2024年第2期12卷 300-316页

作者： Sen-Lin Wang Li-Chao Zhang Chao Cai Ming-Kai Tang Si Chen Jiang Huang Yu-Sheng Shi State Key Laboratory of Materials Processing and Die and Mould Technology Huazhong University of Science and TechnologyWuhan430074People’s Republic of China School of Machinery and Automation Wuhan University of Science and TechnologyWuhan430081People’s Republic of China

Model design and slicing contour generation in additive manufacturing(AM)data processing face challenges in terms of efficiency and scalability when stereolithography files generated by complex functionally graded structures have millions of *** paper proposes a hybrid modeling and direct slicing method for AM to efficiently construct and handle complex three-dimensional(3D)*** 3D solids,including conformal multigradient structures,were uniformly described using a small amount of data via signed distance *** hybrid representations were quickly discretized into numerous disordered directed lines using an improved marching squares *** establishing a directional HashMap to construct the topological relationship between lines,a connecting algorithm with linear time complexity is proposed to generate slicing contours for *** method replaces the mesh reconstruction and Boolean operation stages and can efficiently construct complex conformal gradient models of arbitrary topologies through hybrid ***,the time and memory consumption of direct slicing are much lower than those of previous methods when handling hybrid models with hundreds of millions of faces after mesh reconstruction.

关键词： Additive manufacturing(AM) Hybrid modeling direct slicing Signed distance field

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direct slicing Based on Material Performance and Process Parameters for Selective Laser Sintering

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International Journal of Plant Engineering and Management 2006年第4期11卷 221-226页

作者： MA Liang BIN Hong-zan School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China

direct slicing from GAD models to generate sectional contours of the part to be sintered for Selective Laser Sintering （SLS） may overcome inherent disadvantages of using a Stereo Lithography （STL） format. In this paper, a direct slicing procedure is proposed for Selective Laser Sintering based on material performance and process parameters. slicing thickness depends on the 3 D geometric model, material performance and process parameters. The relationship among material performance, process parameters and the largest slicing thickness is established using analysis of a sintering temperature field. A dynamic linked library is developed to realize direct slicing from a CAD model.

关键词： selective laser sintering( SLS) direct slicing slicing thickness

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Off-Line Programming of a Robot for Laser Re-Manufacturing

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Tsinghua Science and Technology 2009年第S1期14卷 186-191页

作者：靳晓曙杨洗陈 School of Machinery and Electron Institute of Laser Technology Tianjin Polytechnic University

Off-line programming provides an essential link for CAD/CAM. This paper introduced the principle of developing off-line programming system for laser re-manufacturing. Task and information flow of off-line programming for laser re-manufacturing robot was analyzed and the software structure of off-line programming based on commercial CAD software was constructed. The off-line programming system developed in this study includes 3-D solid model design, direct slicing for obtaining path data, graphical simulation of the robot and its workcell, kinematic model of the robot, motion planning, and creation of the control program for manufacturing process. The CAD software was used to design models of robot, workpiece, coaxial nozzle, and workspace. Through the application programming interface provided by the CAD software, the VC++ and ATL were chosen to develop such modules as direct slicing for obtaining path data, path planning, process specification, and control program automatic generation. The FANUC Roboguide software was used to realize graphical simulation. By direct slicing, the position and orientation data of robot end-effector was determined. The results show that the proposed system can be applied in laser re-manufacturing robot for manufacturing operations.

关键词： laser re-manufacturing robot off-line programming direct slicing

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slicing 3D CAD Model directly with ObjectARX

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Computer Aided Drafting,Design and Manufacturing 2008年第2期18卷 27-32页

作者： WANG Wei-chen1, 2, ZHU Zhen-cai1, FANG Liang1, WANG Fan-sheng1, 2 (1. College of Mechatronic Engineering, China University of Mining & Technology, Xuzhou 221116, China 2. College of Mechatronic Engineering, Xuzhou Normal University, Xuzhou 221116, China)

An algorithm for compensating the varying section contour within the extent of each layer thickness is proposed to improve the rapid prototyping part’s shape and size precision.

关键词： rapid prototyping (RP) 3D CAD model direct slicing contour compensation

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