| With Digitizing become the focus and the: important feature of manufacturing technology, high efficiency, high quality and high precision become the development direction of product manufacturing technology. Accordingly, the research for finishing technology with abrasive finishing and polishing has became more and more important. Polishing is the last procedure of the mold manufacturing and its surface finishing quality affects directly the quality, life-span, cost and price. In China, finishing for surface still must be done by hand work, so it restricts severely the production development of precision manufacturing. Magnetic Abrasive Finishing (MAF) is a new polishing technology that use magnetic field into traditional polishing technology. The technology is researched and applied in China just in recent years and it has good effect at the complex surface product manufacturing due to its flexibility and self-adaptability. Based on summarizing of advanced technologies about Magnetic Abrasive Finishing (MAF), CNC and Measuring technology, this dissertation made a systematic study on the techniques of MAF and automatic finishing device of surface with free-form curvature by using of the Magnetic abrasive finishing process.The main contribution of this dissertation are briefly presented as follow:In chapter 1, the dissertation introduces the background of the research, domestic and international research status and the meaning of the research.In chapter 2, the dissertation introduces the theory and characteristics contrasting with other polishing methods. It emphasize on research about the law of finishing, Magnetic abrasive and Influence factor.In chapter 3, the method of digitizing MAF for free-form surface is studied. At first, the technology of measuring for free-form surface and making of measuring data are introduced. Aiming at the characteristics of MAF, the chapter research the method of processing route based on digitizing measuring data.In chapter 4, the research and manufacturing of free-form surface digitizing MAF prototype is studied. It involve the design of electromagnetic inductor and magnetic pole, preparation of magnetic abrasive.In chapter 5, using a entity as the research object, the free-form surface digitizing and magnetic abrasive finishing are experimented. It proved the validity of the theory and the prototype.In chapter 6, main results and conclusions of this dissertation have been summarized; the prospects and study emphases of the future research work have been discussed and forcast. |
