Journal
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume 44, Issue 3-4, Pages 238-243Publisher
SPRINGER LONDON LTD
DOI: 10.1007/s00170-008-1829-2
Keywords
Hybrid forging process; Micro-forming; FE simulation; Micro-double gear; Piercing
Funding
- High Technology Research and Development Program of China [2006AA04Z331]
- Young Scholars of Heilongjiang Province [JC-05-11, JC-06-07]
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Micro-gear is an important actuating component used widely in micro-electromechanical systems (MEMS) devices. Forming and assembly technology of micro-parts are urgently needed to be developed. In this paper, novel hybrid processes combining isothermal enclosed forging process with two kinds of piercing methods have been presented to manufacture the micro-double gear. The metal flow and filling quality were studied with finite element (FE) simulation. The results show that the hybrid forging process with central piercing method can improve the defects (underfill and declining shaft) generated by double-ended piercing method. Based on FE analysis, the experiments of hybrid forging process was investigated with central piercing method and the micro-double gear was manufactured with good quality. The results show that central piercing method can solve the shortcoming of inclining shaft with double-ended piercing method. The hybrid forging process is an appropriate technology for manufacturing the micro-double gear.
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