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Differences in cutting levels between cnc machining centers at home and abroad
The difference in cutting level between cnc machining centers at home and abroad: At present, the cutting speed of turning and milling in advanced countries has reached 5000-8000m/min or more; the spindle rotation speed of machine tools is above 30000r/min (some up to 100,000r/min). For example, when milling a plane, the cutting speed in foreign countries is generally greater than 1000-2000m/min, while the domestic is only equivalent to 1/12~1/15 of foreign countries, that is, the domestic dry 12~15 hours is equivalent to 1 foreign dry. hour. According to the survey, the actual cutting time of many machining centers is less than 55% of working time. Therefore, how to improve the processing efficiency and reduce the scrap rate has become a common problem discussed by many companies. A survey of the cutting efficiency of CNC machining centers in China found that there are many problems such as low tool precision, large blade runout, low processing finish, and unsuitable process equipment.