Free-form surface machining method and device based on two-step online detection and compensation technology
A curved surface processing and free technology, applied in the direction of auxiliary devices, metal processing equipment, manufacturing tools, etc., can solve the problems of long time consumption and fluctuation of online detection, and achieve the effect of ensuring online detection, high detection accuracy and improving processing accuracy
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[0060] In this embodiment, an off-axis parabolic mirror with a diameter of 100 mm is taken as an example to further illustrate the above solution. This embodiment adopts the structure of the device such as figure 1 As shown, the tool platform 1 moves along the Z axis, the processing tool 2 is a single-point diamond tool, the spindle platform 3 moves along the X axis, and the lathe spindle 4 is the air bearing spindle of the precision turning lathe. The material of the off-axis parabolic mirror to be processed is 6061 aluminum alloy, the radius of curvature of the apex is 256.174mm, the off-axis distance is 147.902mm, the machining aperture is 100mm, and the inclination angle is 30°. The measuring ranges of the first optical probe 7 and the second optical probe 9 used in this embodiment are both 300 μm. By adopting the above method, the non-rotationally symmetrical free-form surface with large diameter is machined by slow tool servo, and the surface shape error of the processe...
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