Fast servo ultraprecise fly cutting machining method for brittleness material complex curved surface
A technology for complex curved surfaces and brittle materials, applied in the field of machining, it can solve the problems of easy cutting damage of brittle materials, and achieve the effect of avoiding brittle cracking, fast and stable cutting, and ensuring surface quality and optical performance.
Active Publication Date: 2017-08-18
TIANJIN UNIV
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The invention relates to a fast servo ultraprecise fly cutting machining method for a brittleness material complex curved surface. The method includes the following steps that a machining system with a fast servo mechanism and fly cutting being combined is established; when a machined device is subjected to fly-cutter machining, a cutter is provided with an area nearest to the machined device every time a spindle is rotated once; at the area, due to the fact that the rotating speed of the fly-cutter spindle is unchanged, when the cutter makes contact with the surface of a workpiece, the fast servo mechanism can be used for driving the workpiece to make single-degree-of-freedom high-frequency motion in the cutting-in direction or make multi-degree-of-freedom high-frequency motion in the cutting-in direction and transverse feeding direction so as to be matched with fly-cutter rotation, and an array structure and complex surface can be machined; the proper cutting parameters and cutter geometrical parameters are designed; motion synchronization is achieved by controlling the servo motion and fly-cutter rotation angle, and thus the back cutting depth can be controlled when materials are cut; and finally cutter motion trajectories make fast and smooth traverse motion on the surface of the machined device.
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