Non-standard equipment precision parts processing process will present tool wear accelerated, poor processing appearance integrity, chip removal difficulties and other common problems, seriously affecting the quality of such material precision parts processing, production cycle and processing costs.
Non-standard equipment parts processing needs to get super-lubricated processing appearance and high processing accuracy, which requires a high standard life of the knife, the tool is not worn, will be based on the quality of the processed appearance is not reduced super poor. Diamond tool standard life is very high, high-speed cutting tool wear is also very slow. Therefore, ultra-precision cutting, cutting speed is not subject to the constraints of tool life, which is different from the general cutting rules.
Non-standard equipment parts processing practice selected cutting speed, often based on the use of ultra-precision machine tool dynamic characteristics and cutting system dynamic characteristics of the selection, that is, the selection of the minimum vibration speed. Because at this speed the appearance of the smallest roughness, the highest quality machining. Obtaining a high quality non-standard machined appearance is the primary concern in the machining of non-standard equipment parts. The use of good quality, especially the dynamic characteristics of good, small vibration of the ultra-precision machine tools can use high cutting speed, can improve the power of processing.
The selection of non-standard equipment parts processing parameters include the selection of the cutting tool point of view, the selection of cutting speed and depth of cut and feed rate selection. From the past experience we know that in the processing of plastic materials, if you select a larger front angle of the tool can be useful to press down the composition of the chip tumor, which is the front angle of the tool increases, the cutting force is reduced, cutting deformation is small, the tool and chip contact length becomes shorter, reducing the basis for the composition of the chip tumor.