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首页> 外文期刊>Journal of The institution of engineers (India), Series C >Development of Experimental Setup of Metal Rapid Prototyping Machine using Selective Laser Sintering Technique
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Development of Experimental Setup of Metal Rapid Prototyping Machine using Selective Laser Sintering Technique

机译：用选择性激光烧结技术开发金属快速原型机的实验设置

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Abstract Unlike in the traditional manufacturing processes, additive manufacturing as rapid prototyping, allows designers to produce parts that were previously considered too complex to make economically. The shift is taking place from plastic prototype to fully functional metallic parts by direct deposition of metallic powders as produced parts can be directly used for desired purpose. This work is directed towards the development of experimental setup of metal rapid prototyping machine using selective laser sintering and studies the various parameters, which plays important role in the metal rapid prototyping using SLS technique. The machine structure in mainly divided into three main categories namely, (1) Z-movement of bed and table, (2) X–Y movement arrangement for LASER movements and (3) feeder mechanism. Z-movement of bed is controlled by using lead screw, bevel gear pair and stepper motor, which will maintain the accuracy of layer thickness. X–Y movements are controlled using timing belt and stepper motors for precise movements of LASER source. Feeder mechanism is then developed to control uniformity of layer thickness metal powder. Simultaneously, the study is carried out for selection of material. Various types of metal powders can be used for metal RP as Single metal powder, mixture of two metals powder, and combination of metal and polymer powder. Conclusion leads to use of mixture of two metals powder to minimize the problems such as, balling effect and porosity. Developed System can be validated by conducting various experiments on manufactured part to check mechanical and metallurgical properties. After studying the results of these experiments, various process parameters as LASER properties (as power, speed etc.), and material properties (as grain size and structure etc.) will be optimized. This work is mainly focused on the design and development of cost effective experimental setup of metal rapid prototyping using SLS technique which will gives the feel of metal rapid prototyping process and its important parameters.
机译：摘要与传统的制造过程中，添加剂制造业作为快速原型设计，允许设计人员生产以前认为过于复杂的部件，以经济地制作。通过直接沉积金属粉末，从塑料原型到全功能金属零件，因为所生产的部件可直接用于所需目的。这项工作旨在使用选择性激光烧结进行金属快速原型机的实验设置，并研究各种参数，这些参数在使用SLS技术的金属快速原型中起着重要作用。机器结构主要分为三个主要类别，即（1）床和台式Z移动，（2）激光运动的X-Y运动装置和（3）馈线机构。通过使用铅螺杆，锥齿轮对和步进电机来控制床的Z移动，这将保持层厚度的精度。使用正时带和步进电机控制X-Y运动，以精确运动的激光源。然后开发出进料机构以控制层厚度金属粉末的均匀性。同时，该研究进行了选择材料。各种类型的金属粉末可用于金属Rp作为单金属粉末，两种金属粉末的混合物，以及金属和聚合物粉末的组合。结论导致两种金属粉末的混合物最小化诸如球形效果和孔隙率的问题。通过在制造部件进行各种实验以检查机械和冶金性能，可以验证开发系统。在研究这些实验的结果之后，将优化各种工艺参数作为激光性能（作为电源，速度等）和材料性质（作为晶粒尺寸和结构等）。这项工作主要集中在使用SLS技术的金属快速原型设计的成本有效实验设置的设计和开发，这将提供金属快速原型工艺的感觉及其重要参数。

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