| Super precision cutting is a important field of super precision machining, and it is a broad new technic. The super slippy surface can be got after colored metal and non-metal is c ut by single crystal diamond cutter. In this way it can take the place of super precision grinding, the efficiency can be increased , and the precision can be guaranteed, In these years, single crystal diamond cutter have been broadly used in the mechanics machining field, and hold a very important position. So studying manufacturing, grinding methods, grinding mechanism of single crystal diamond cutter has arose the attention of people.Single crystal diamond is very hard, and it is a good material of cutter. But at the same time, grinding diamond is a difficult work. On the course of grinding single crystal diamond cutter, the grinding efficiency should be increased and the blade quality ought to be guaranteed. To solve this problem, this paper start with grinding efficiency, and the diamond grinding machine is reconstructed, the grinding mechanism is studied in-depth. And by analyzing experimentations and using for reference to bypast experience, the systemic methods of grinding single crystal diamond cutter is got.In this paper the development status of single crystal diamond cutters is introduced. The manufacture procedure and methods of single crystal diamond cutters, the design of single crystal diamond cutters are presented.The grinding machine tool is reconstructed. After the machine is reconstructed, the grinding efficiency is enhanced, the handling of grinding machine became more agile. After the grinding machine is used on the course of rough grinding of single crystal diamond cutter, the machining cost of single crystal diamond cutter will be reduced. So reconstructing the machine has very practical value.Grinding efficiency is a important problem in machining diamond cutters. In this paper by analyzing experimentation results, primary factors which affect the grinding efficiency are got, these factors are speed of grinding wheel, swing frequency of grinding wheel and feed of shaft direction. Increasing these parameters can improve grinding efficiency. But these parameters should be matched logically in work.By the comparative experiment of wheel bonded by ceramic and wheel bonded by metal, it can be found that wheel bonded by ceramic can get higher grinding efficiency and wheel bonded by metal can get better blade.In order to increase the level of blade grinding, the grinding mechanism should be studied in-depth, In this paper experimentations are analyzed by scanning electron microscope, it is found that the themiochemical removal was dominating, the fatigue removal and brittle removal was secondary on the course of grinding single crystal diamond. Because grinding wheel is different, proportion of every removal mode is different.In the end by analyzing experimentation results, using for reference to bypast experience, the systemic blade grinding method is got. The main purpose is wiping off unwanted material on the course of rough grinding, the bigger grain wheel should be used. The grinding wheelwith ceramic bond will get higher grinding efficiency if it is used. Firstly, the grinding direction in which the grinding is higher should be found. The less grain wheel should be used in the course of half precise grinding, and the blade quality should be considered in order to prepare for precise grinding. On the course of precision grinding, the grain of wheel is less, the quality of blade is better, and the primary factors which affect blade quality should be considered. In order to get the best blade, the reverse grinding should be adopted, and the grinding time should be increased appropriately on the course of precision grinding. |
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