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在使用分度头加工圆周等分工件时,常常由于规定的等分数不能用简单分度法均分,同时分度头又因工件需偏转一个角度,不能配换齿轮,故需采用差动分度,这时,一般都采用近似分度法。各有关手册和书刊都载有近似分度表以供查用。为了提高近似分度的精度,人们作了大量的研究工作。(参看“提高近似分度精度的计算方法”载《机械工人》1980年第
In the use of dividing the first round of the workpiece processing equal parts, often due to the provisions of the equal parts can not be a simple division of law, at the same time the indexing head and the workpiece due to deflection of an angle, can not match the gear, it is necessary to use differential points Degree, at this time, generally adopt approximate indexing method. The relevant manuals and books and periodicals contain an approximate index for inspection. In order to improve the accuracy of approximate indexing, a great deal of research work has been done. (See “To improve the accuracy of approximate indexing method” contained “mechanical workers” in 1980 the first