In processing surface surface roughness is not the same appearance, the appearance of small surface roughness with small super speed, the appearance of large surface roughness with large knife rate, plasticity is very good, this point in the ordinary lathe can not be guaranteed. Wheel gallery attitude miscellaneous parts.
Random plane curve can be used parallel line or arc to close, cnc fine machining with arc tool radius compensation effect, can process a variety of miscellaneous wheel gallery parts. The use of cnc fine machining is necessary for operators to use carefully.
The key machining processes of CNC machining fine parts include fine turning, fine boring, fine milling, fine polishing and grinding.
1, Fine car and fine boring: four-axis aircraft most of the high fine light aluminum alloy (aluminum or magnesium, etc.) parts choose this method of processing. Generally natural polysilicon diamond stone, blade arc half warp less than 0.1μm. The precision of 1μm and the surface unevenness with the mean height-width ratio difference less than 0.2μm can be obtained on the high precision lathe, and the coordinates accuracy can reach +2μm.
2, Finishing milling: used to process the attitude of miscellaneous aluminum or beryllium aluminum alloy parts. By means of the precision of the slide rail and the spindle bearing of the CNC lathe, the high accuracy of the mutual position is obtained. Precision mirror glass is produced by high speed milling with a carefully milled steel cutter.
3, Fine polishing: used for processing shaft or hole parts. Most of these parts are made of hardened steel and have very high strength. Most high precision grinding machine spindles use negative pressure or dynamic pressure liquid rolling bearings to ensure high stability. The ultimate precision of cutting is not only affected by the bending stiffness of the lathe spindle and the bed body, but also related to the selection and balance of the sand wheel and the machining precision of the center hole of the steel parts. The standard precision of 1μm and the unroundness of 0.5μm are obtained by fine polishing.
4, Grinding: using the basic principle of mutual grinding of each other to be processed on the surface of the arc protrusion position selection processing. Abrasive straightness, cutting speed and drilling heat can be precisely manipulated, so it is a machining method with Z multi-precision in fine machining technology. In order to achieve the accuracy of 0. 1 to 001um and the external economic unflatness of 0.005μm, the hydraulic or pneumatic mating parts of the high precision servo motor components of the four-axis aircraft and the rolling bearing parts of the dynamic pressure yo-yo motor are processed by this method.
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