Abstract:
Based on the development of rapid prototyping (RP) technology, a new
extruding deposition head fed with bulk material in granulated form is
presented through analyzing the characteristics of existent head systems
in the fused deposition modeling(FDM) process. The difficulties of the
head realization are the miniaturization of extruding screw and the
steady feeding of the granules. Therefore, a feasible design method of
small extruding screw is founded, and a novel feeding set is adopted.
Through a series of experiments, the new extrusion head technology is
proven feasible. With further improvement, the deposition head can be
used to fabricate prototypes with thermoplastic elastomer or biomaterial
material.
Key words:
Rapid prototyping Fused deposition modeling Extrusion screw
Bulk material in granulated form Extruding deposition head
CLC No: TH123+.1
TP391.7
国家自然科学基金(50575139)和上海汽车工业科技发展基金(0330)资助项目.
Received
20051130, received in revised form 20060329
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