Precision Analysis of Part Manufacturing Using SLM Method
Precision Analysis of Part Manufacturing Using SLM Method
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DOI：
10.4028/www.scientific.net/amm.693.183
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发表时间：
2014-12
期刊：
影响因子：
--
通讯作者：
R. Mendřický;Petr Keller
中科院分区：
文献类型：
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作者：
R. Mendřický;Petr Keller
基于3D打印的零件制造技术是目前快速生产原型的重要工具，在缩短产品开发和创新时间方面发挥着重要作用。在通过3D打印机以及任何其他制造技术进行制造时，最终产品的精度受到各种因素和影响，为了提供高尺寸和形状精度，必须熟悉这些因素和影响。本文的研究重点是采用选择性激光熔化法（SLM）制造零件的尺寸和形状精度分析。该技术通过激光有选择地逐层熔化金属粉末来制造原型。为了分析的目的，设计了一个特定形状的CAD模型。该零件的方向是通过SLM 280HL工作空间设计的，考虑到内应力的最小化。零件本身由AlSi12材料制成，并在这台机器上打印。该零件随后通过Atos II三维光学扫描仪进行数字化。将数字化得到的数据与标称CAD模型进行了比较。这种比较是评价用这种技术制造的原型的尺寸和形状精度的基础。
The technology of part manufacturing by means of 3D printing is currently the essential tool in fast production of prototypes and significantly participates in shortening the development an innovation time of the product. In manufacturing by means of a 3D printer as well as in any other manufacturing technology, the precision of the end product is affected by a variety of factors and effects that shall be familiarised with in order to provide high dimensional and shape precision.The research specified in this post is focused on dimensional and shape precision analysis of part manufacturing using the Selective Laser Melting method (SLM). This technology manufactures a prototype by selectively melting metallic powder layer by layer by means of a laser. A CAD model of a specific shape was designed for the purpose of the analysis. An orientation of this part was designed by means of SLM 280HL workspace with regard to minimisation of the internal stress. The part itself was made of AlSi12 material and printed on this machine. The part was afterwards digitised by means of Atos II 3D optical scanner. The data obtained by digitising were compared to the nominal CAD model. The comparison was a basis for the evaluation of the resulting dimensional and shape precision of a prototype manufactured by means of this technology.