3234 KB25 KB199920252016Ji, ShijunLiu, XiaolongYu, HuijuanZhao, JiZhao, Mingxuletnik:62številka:nr. 4str. 213-219ISSN:0039-2480COBISSID_HOST:14594587URN:URN:NBN:SI:doc-CNG8W2VAenZveza strojnih inženirjev in tehnikov Slovenije etc.Strojniški vestnikkinematične lastnostisinusoidna površina obročaultranatančna obdelavaUltra-precision machining of a large amplitude sinusoidal ring surface based on a slow tool servo|A sinusoidal ring surface with a large size, amplitudes in the macro-level, sub-micrometre form accuracy and nanometre surface roughness plays an important role in modern optical systems and precision calibration, but it is difficult to fabricate with traditional cutting methods. A sinusoidal ring surface with a submillimetre amplitude, machined using a slow tool servo (STS) assisted by single-point diamond turning (SPDT) is presented in this paper. The kinematic characteristic of machine axes is analysed to assess the feasibility of the turning process. The tool path generation, tool geometry optimization, and tool radius compensation are investigated for fabrication of the desired surface. A fabricating experiment of a 0.4 mm amplitude sinusoidal ring surface is performed, and the surface profile is measured with a Talysurf PGI 1240, a measurement system for the small to medium sized aspheric optics. After dealing with original measured curves, a form accuracy 0.274 microm in peak-to-valley error (PV) and surface roughness 7.5 nm in Ra are obtained for the machined surface, and it can be seen that STS can be used for machining of a large amplitude sinusoidal ring surfaceObdelava prostih površin zahteva napredno tehnologijo. Značilen primer površin prostih oblik so sinusoidni obroči. Sinusoidni obroči velikih dimenzij z amplitudo sinusa makro velikostnega reda, podmikrometrsko natančnostjo oblike in nanometrsko površinsko hrapavostjo imajo pomembno vlogo pri sodobnih optičnih sistemih in natančnih kalibratorjih, njihova izdelava pa bi bila s tradicionalnimi postopki odrezavanja le zelo težavna. Članek predstavlja izdelavo sinusoidne površine obroča s podmilimetrsko amplitudo po postopku enotočkovnega diamantnega struženja (SPDT) s podporo tehnologije STS (Slow Tool Servo)TEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo