Paper Title:
Thread Forming of a Micro Screw for Storage Devices Using Finite Element Analysis
  Abstract

High precision micro screws have been widely required for the fastening parts of electronic storage devices. Teeth’s forming of the micro screw is generally utilized by a cold thread rolling process with a flat die. This process for micro sized parts has some difficulties such as the design of die shape, alignment between dies, and process managements. In this paper, it is focused on the effect of the alignment between dies and material, and process parameters in simulation. The investigated parameters are the friction coefficient and the relative position between stationary and moving dies using a numerical simulation. The simulations provide that the shear friction factor of 0.9 is proper for preventing slip between dies and raw material and the relative position of two dies has to be set to the half length of the pitch for maintaining the continuous thread profiles. The deformed shapes of the pitch part and the top part of threads can be demonstrated the feature of experimental result. The folding phenomenon appeared at the top part of threads, which seemed to be induced by a lack of the metal flow under micro sized deformation.

  Info
Periodical
Advanced Materials Research (Volumes 264-265)
Edited by
M.S.J. Hashmi, S. Mridha and S. Naher
Pages
1613-1618
DOI
10.4028/www.scientific.net/AMR.264-265.1613
Citation
H.W. Lee, J.H. Song, G. A. Lee, H. J. Lee, K.D. Park, "Thread Forming of a Micro Screw for Storage Devices Using Finite Element Analysis", Advanced Materials Research, Vols. 264-265, pp. 1613-1618, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wei Wei Wang, Fei Han, Shou Jing Luo
Abstract:In the present paper, the precision forging of an impeller was studied by means of numerical simulation and test forming. Based on the...
593
Authors: Nobuyuki Kamei, Hisaki Watari
Chapter 7: Machining
Abstract:A growing demand for lightweight products has been brought about by the rapid development of new automobiles in order to reduce fuel...
1753
Authors: Fu Qiang Ying, Jia Dong Shen, Ling Dong Wu
Abstract:Problems with gear shaft formed by cross wedge rolling (CWR), such as slip, disorder of tooth, material deficiency at two sides of the gear,...
56
Authors: Jian Jun Wang, Su Lan Hao, Lu Pan, Yan Ming Zhang
Chapter 5: Technologies and Organization of Production in Mechanical Engineering
Abstract:In view of large load, the shape of large crank forgings and forging process are designed reasonably. Large crank forging process is...
561
Authors: Cong Miao, Hai Bo Yang
Chapter 16: Forming Technologies
Abstract:In this paper, the process of two-hole dies extrusion oval aluminium tube simulation analysis is carried out by the Deform-3D software .The...
1854