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由于汽轮机在高温高压下工作,对汽缸中分面的平面精度和表面粗糙度要求较高,原来都是在铣后再磨,然后还需钳工修刮才能达到要求,是费工又费力的工序。我厂引进英格索尔平面精铣刀,直接用精铣,一次达到要求,平面度为0.03mm,表面粗糙度为R_α0.8～3.2,提高生产率七倍以上。现已消化吸收国产化,用于生产,刀具消耗费用为原来的1/4。一、铁刀结构(图1)精铣刀具有精铣与精刮双重作用,实质上就是把刮刀装在铣刀盘上;φ350mm铣刀盘
As the steam turbine work under high temperature and pressure, the cylinder surface accuracy and surface roughness of the higher division, the original are milling and then grinding, and then need to repair fitter to meet the requirements, it is laborious and laborious process . Our factory introduced Ingersoll Plane milling cutter, direct use of precision milling, a meet the requirements, flatness of 0.03mm, surface roughness of R_α0.8 ~ 3.2, improve productivity more than seven times. Now digestion and absorption of domestic, for production, cutting tool costs for the original 1/4. First, the structure of the iron knife (Figure 1) The fine milling cutter has the dual role of precision milling and precision scraping, in essence, the scraper is mounted on the cutter disk; φ350mm cutter disk