In addition to the necessary constant pressure grinding, non repeated grinding and other processes, the final process also needs to ensure the consistency of all movements and grinding stiffness during the tool grinding process. The final process of ultra precision tool manufacturing should be precision polishing and repeated inspection. Without changing the shape of the cutting edge and ensuring the sharpness index, it is necessary to add various polishing steps to reduce the amorphous layer and eliminate the microcracks of the insert.
The function of building material diamond tool will be helpful to study the grinding process of the tool. For the variable pressure sharpening process with different crystal orientations, the machine tool will add corresponding functions to realize the above process research and improve the grinding accuracy. A high-precision non optical in-situ measurement system will also be introduced to achieve accurate measurement of edge profile and sharpness. In the 2011 special project of high-end CNC machine tools and basic manufacturing equipment "development of CNC grinding machine tools for benchmark high-precision diamond tools and Research on grinding technology", relevant sharpening and detection functions were designed and developed. This will provide a basic means for manufacturing high-precision natural diamond tools.
In addition to detecting and evaluating three commonly used standard parameters (edge sharpness, edge profile accuracy and front and back surface roughness) of natural diamond tools. In the initial stage of design and manufacturing, the quality of diamond blank will be optimized and the orientation of diamond crystal will be accurately determined. In the sharpening stage, the accuracy of the grinding machine tool and the grinding state of the tool can be detected, and the shape of the edge and the sharpened sound spectrum can be detected by in-situ optics. After manufacturing natural diamond tools, it will also detect micro mechanical parameters, such as the size and number of micro defects or micro crack edges of the cutting edge, the micro cracks of the cutting edge and the micro hardness of the cutting edge surface. In the future, China needs to establish a natural diamond tool evaluation system, including diamond crystal quality and diamond tool specifications.
Natural diamond tools are not only used for cutting non-ferrous metals and some crystals, but also for cutting low-temperature ferrous metals and protecting gas environment. Ultrasonic vibration cutting can also process more materials and precision parts.
In the research of cutting processing, the geometric design parameters such as the angle and shape of natural diamond tools will be fully emphasized. When using diamond tools, we should not only stress the sharpening accuracy of the tools, but also stress the micromechanical strength of the cutting edges and the tools. Wear resistance. With the progress of China's manufacturing technology, the ultra precision diamond turning technology will be developed faster, the natural diamond manufacturing technology will be improved rapidly, and the application field of diamond tools will be more extensive.
