| URN | etd-0630113-124536 | Statistics | This thesis had been viewed 693 times. Download 4 times. |
| Author | Zhi-Wei Du | ||
| Author's Email Address | No Public. | ||
| Department | Institute Of Mechanical Engineering | ||
| Year | 2012 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 122 |
| Title | The study on the large-area flat plane by using electro- rheological fluid polishing |
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| Abstract | In order to make the workpiece has a smooth and specular plane, the grinding or polishing is one of the techniques in the manufacturing process. Flat large-area plane is an important foundation of the precision machinery. Therefore, a large-area flat polishing technology is important and worthwhile to develop. By the strong electric field, dielectric particles can be polarized and formed aggregates in the Electro-rheological (ER)fluid, so that the adhesion of the ER fluid stagnation increased to reach the semi-solid fluid characteristics. In this paper, by the characteristics of the ER fluid, and propose an innovative polishing technology for large-area flat plane; ER fluid polishing technology. In this paper, the CNC machining center is used to a platform to construct a CNC ER fluid polishing system. Its characteristics do not need very high-precision plane datum and the two planes can be processed at the same time. Firstly, the abrasive grains were added to the ER fluid, and then uniformly mixed into the ER polishing slurry. The spindle and bed in the machining center were set each holding a large area flat conductive workpiece, and placed the ER polishing slurry between the up and down plane of workpiece and controlled the gape between of the upper and lower plane of workpiece to maintain a proper spacing. A high-voltage generator was used to supply the appropriate voltage, the workpiece on spindle was set an anode and the workpiece on the bed was set a cathode. Let the spindle rotational motion and the planetary motion, so that both the upper and lower plane can be grinding and polishing under the environment of the ER polishing slurry, and gradually form planes. After experiments, it can be found that this construct CNC ER polishing system is quite successful. And found that the voltage, the space between the upper and lower planes, grinding slurry concentration, the spindle revolutions and planetary motion have a significant impact on the processing capacity of the large-area flat plane. Keywords: Electro-rheological Fluid, Grinding,Polishing, High-voltage, Large-area plane. |
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| Files | indicate accessible at a year | ||
| Date of Defense | 2013-06-21 | Date of Submission | 2013-07-05 |