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- Title
光学自由曲面铣床静动态特性研究.
- Authors
李奇; 于天彪; 王宛山
- Abstract
An optical free-form milling machine is designed according to the technological characteristics of optical component manufacturing and the finite element (FE) modeling and static and dynamic characteristics analysis of the optical free-form surface milling machine are carried out. The results show that, at the original position under gravity load, when the gravity balance device is not working, the straightness of guide rail is 0.7μm, and when the gravity balance device is working, the straightness of guide rail is 0.035μm, when the gravity balance device is not working, the straightness of lead screw is 2.3μm, and when the gravity balance device is working, the straightness of lead screw is 0.2μm. The natural frequencies of the optical free-form surface milling machine with different structural schemes and material schemes are extracted, and the vibration mode shows that the first vibration mode of the milling machine that affects the machining precision is the third order, the optimal design scheme of dynamic characteristics is that the Z-axis motor of the milling machine is installed on the roof and the milling machine structure material uses natural granite, and the milling machine structure material using natural granite compared with cast iron can significantly improve the dynamic characteristics of the milling machine.
- Subjects
GRAVIMETERS (Geophysical instruments); CAST-iron; MACHINING; IRON founding; CONSTRUCTION materials; MILLING-machines
- Publication
Journal of Northeastern University (Natural Science), 2022, Vol 43, Issue 5, p674
- ISSN
1005-3026
- Publication type
Article
- DOI
10.12068/j.issn.1005-3026.2022.05.010