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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Problems solved by technology

The present invention aims at the technical requirements of microstructure curved surface processing and the cutting performance of brittle materials, can solve the difficulty of complex curved surface fo

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  • Fast servo ultraprecise fly cutting machining method for brittleness material complex curved surface
  • Fast servo ultraprecise fly cutting machining method for brittleness material complex curved surface
  • Fast servo ultraprecise fly cutting machining method for brittleness material complex curved surface

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Example Embodiment

[0020] Aiming at the difficulty of processing and forming of brittle materials with complex curved surfaces and poor surface quality, the present invention proposes a processing method combining fast servo and flying knife, that is, the diamond turning tool is vertically installed on the ultra-precision flying knife spindle, and the fast servo motion is coupled in linkage. Realize high-speed cutting of complex curved surfaces. This method can realize rapid and high-quality generation of brittle material microstructure arrays and other complex curved surfaces, and avoid impurities and defects that may be introduced in traditional grinding. During processing, the high speed of the fly cutter spindle can be ensured, and the machined surface can be cut with frequency conversion and amplitude through fast servo motion, and the single removal of material during the cutting process can be controlled to achieve high-efficiency and low-damage processing of brittle materials.

[0021] The ...

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Abstract

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.

Description

technical field [0001] The invention relates to a cutting processing method. Background technique [0002] Optical complex surfaces are non-rotationally symmetric optical surfaces whose surfaces vary freely. The application fields of optical complex surfaces are extremely wide, covering multiple interdisciplinary fields such as new energy, aerospace, lighting imaging, and bioengineering. Compared with traditional optical surfaces, optically complex curved surfaces have superior performance, and its large degree of freedom can effectively control the propagation of light, which can help expand the field of view and reduce distortion. At the same time, for multi-optical device systems, adding complex curved surfaces Reduce system volume and weight while improving system imaging quality. [0003] Brittle materials (such as semiconductor materials, optical crystal materials, etc.) have excellent ultraviolet or infrared transmittance, high damage threshold, high refractive inde...

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Application Information

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IPC IPC(8): B23D79/00
CPCB23D79/00
Inventor 张效栋房丰洲李泽骁朱琳琳
Owner TIANJIN UNIV
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