共查询到20条相似文献,搜索用时 156 毫秒
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快速成形技术的应用与发展 总被引:1,自引:0,他引:1
简要介绍了快速成形技术的基本原理、类型、工艺方法和技术特点。阐述了快速成形技术在工业造型、机械制造、模具制造、医学、航空航天、考古及艺术等多领域的应用,并对快速成形技术今后的发展方向作了阐述。 相似文献
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数控技术正在成为设备改造、提高成形设备自动化程度及控制精度的主要方向和手段,为适应这一发展趋势,对滚压成形机进行技术改造,通过对成形设备开发现状地分析和对冷轧板成形工艺地调查与研究,确定滚压成形系统要求达到的具体技术要求,并且对总体方案设计进行了分析。根据总体方案设计以PLC为核心的电气控制系统,提出了电气设计的总体要求和设计内容,并对成形机系统的软件设计部分的PLC程序进行了相关分析。根据冷轧板滚压工艺要求使改造后的滚压成形机成为定位精度及重复定位精度高、方便易维修、滚压速度快、加工过程自动化、操作性能稳定的自动化成形滚压设备。 相似文献
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覆膜陶瓷粉末激光烧结成形技术试验研究 总被引:5,自引:0,他引:5
介绍覆膜陶瓷粉末激光烧结成形技术的基本原理。利用变长线激光烧结快速成形机对覆膜陶瓷粉末进行了烧结成形试验,研究了激光功率、扫描速度、预热温度、激光线束长度等工艺参数对烧结成形性能的影响。 相似文献
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D. Ma F. Lin C. K. Chua 《The International Journal of Advanced Manufacturing Technology》2001,18(2):118-127
Rapid prototyping (RP) technology has extended traditional manufacturing applications in areas other than product engineering.
Using RP to fabricate custom implants and prosthesis for surgical planning and education is now an important area of research.
Although, in theory, RP is capable of producing objects of any complexity, designing freeform shapes is difficult using current
CAD systems. These CAD systems are geared toward the design of parts manufactured by traditional methods; they do not help
designers exploit the expanded opportunities offered by RP technology. Medical data cannot be input into these CAD systems
directly for further modification and manipulation. The purpose of this project is to explore a new approach for modelling
and prototyping biomedical objects. The work extends from volume modelling to RP and medicine. In Part 1 of two papers, a
new approach to modelling complex objects, NURBS-based volume modelling, is proposed. A NURBS representation of volumes is
developed to represent not only the surface boundary but also the interior of a 3D object. NURBS-based volume modelling inherits
advantages from both NURBS modelling and voxel-based modelling. The key idea of the NURBS-based volume modelling is to exploit
the flexibility of NURBS modelling and use the voxelised NURBS volumes as components for constructing complex objects. This
paper, Part 2, deals mainly with issues of interfacing volume models to RP systems. A new approach to generate STL files through
volume modelling and iso-surface extraction is proposed. This approach guarantees the validity of the final STL file inherently.
Software development and case studies are also given. 相似文献
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D. Ma F. Lin C.K. Chua 《The International Journal of Advanced Manufacturing Technology》2001,18(2):103-117
Rapid prototyping (RP) technology has extended traditional manufacturing applications in areas other than product engineering.
Using RP to fabricate custom implants and prostheses for surgical planning and education is now an important area of research.
Although, in theory, RP is capable of producing objects of any complexity, designing freeform shapes is difficult using current
CAD systems. These CAD systems are geared toward the design of parts manufactured by traditional methods; they do not help
designers exploit the extended opportunities offered by RP technology. Medical data cannot be input into these CAD systems
directly for further modification and manipulation. The purpose of this project is to explore a new approach for modelling
and prototyping biomedical objects. The work extends from volume modelling to RP and medicine. In this paper, Part 1 of two
papers, a new approach to modelling complex objects, NURBS-based volume modelling, is proposed. A NURBS representation of
volumes is developed to represent not only the surface boundary but also the interior of a 3D object. NURBS-based volume modelling
inherits advantages from both NURBS modelling and voxel-based modelling. The key idea of the NURBS-based volume modelling
is to exploit the flexibility of NURBS modelling and use the voxelised NURBS volumes as components for constructing complex
objects. Part 2 deals mainly with issues of interfacing volume models to RP systems. A new approach to generate STL files
through volume modelling and iso-surface extraction is proposed. This approach guarantees the validity of the final STL file
inherently. Software development and case studies are also given. 相似文献
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基于ANSYS单元表的康明斯柴油机连杆疲劳分析 总被引:1,自引:0,他引:1
利用PRO/E建立了连杆组件的复杂三维有限元分析模型,然后将其导入有限元分析软件ANSYS中分析疲劳问题;提出了一种方便有效的计算安全系数的方法,即利用ANSYS软件中的单元表(elementtable)来计算出各单元的疲劳安全系数,据此得出整个连杆的疲劳安全系数,并以云图的方式显示在构件上,以便于查询。 相似文献
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可锻铸铁连杆技术国外只有日本、美国等国家能生产应用 ,而国内目前仅处于试制开发阶段。以 Chero-kee发动机可锻铸铁连杆的研制开发为例 ,论述了可锻铸铁连杆技术在国内发动机行业的应用前景 相似文献
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高压输电线路长时间暴露在外,会产生输电线路故障,需及时发现并维修。为此,设计了高压输电线路维修机械手,并对其运动学进行了分析。设计的机械手自由度为6个,且6个关节均为旋转关节。首先确定机械手的连杆坐标,连杆的D-H参数,使用Matlab来绘制机械手三维模型。运用Robotics Toolbox中的FKINE和IKINE两个函数来求解机械手的运动学的正解问题和逆解问题。 相似文献