碩士 / 高苑科技大學 / 機械與自動化工程研究所 / 105 / Thread Rolling Process had proceeded for many years, but the forming technology for the screw thread rolling is still a bottleneck in fasteners. The thread rolling forming must be completely finished in the mold at once. In screw factory, it usually relies on the professional rolling maters experienced more than 10 years. They modify mold and mold tryout based on years of experience in machining and trial-and-error way.
Nowadays, the tooth-molding change belongs to a new discussion area already,
no longer rely on site technicians to slowly use trial and error method and produce the screws, so the quality of threading mold design will not only affect product quality and the stability of mass production, but also be the key technologies of the production.
With the computer software leap forward, Computer Aided Design and Analysis
(CAD/CAE) has been widely used in the design and development work. This study
attempts to have deck screw process as an example, to construct the mold and die geometry design through the parametric 3D graphics software SolidWorks, and use DEFORM-3D, elemental analysis software, to simulate the flat-faced rubbing. It is expected to shorten the actual time of producing mold through the application of the forming software, so as to quickly and correctly grasp the conditions and directions required for forming.
The results show that the selected seven control factors of the optimization
design and the smallest forging loads on moving flat die as small the target value will cause less deformation and distortion of the billet. However, if the major diameter is considered as the optimization target value, the total forging load can be reduced by 9.492%, comparing with the original design. At the same times, the standard deviation of the major diameter in different position is also smaller than that of the original designed.
This study can provide engineers with more precise design methods and reduce
the time caused by the formers need to collect the various threading formulas, or add human formation and developing costs caused by wrong calculation. The simulation parameters of the analysis results help manufacturers with the experience of transmission, and also offer a better quality to satisfy customer’s satisfaction.
Keywords: computer aided design, DEFORM-3D forming software, method deck
screw threading rolling, Taguchi method
| Identifer | oai:union.ndltd.org:TW/105KYIT0689008 |
| Date | January 2017 |
| Creators | LU,GUAN-FAN, 呂冠範 |
| Contributors | Hsia,Shao-Yi, 夏紹毅 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 228 |
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