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具有复杂瞳线表面的大多数零件都是用曲线刃立铣刀一行行地进行铣削加工的,其加工生产率取决于铣刀沿行移动的速度,亦即取决于每分钟的进给量 SM=SzZn (1) 式中:S_z—进给量,mm/齿;Z—铣刀齿数;n—铣刀转数,r/min。从式(1)可知,只要增大上述三个参数中的任一参数,便能提高铣削效率。但是应当考虑的是,随着每齿进给量Sz和转数n的增大,铣刀切削刃的磨损加剧;在铣刀直径不变的情况下,随着齿数的增加,容屑槽的尺寸亦成正比例减小,从而导致容屑条件的变坏。
Most parts with a complex pupil surface are machined in line with a curved edge cutter whose machining productivity depends on the speed at which the mill moves along the row, ie on the feed per minute SM = SzZn (1) Where: S_z- feed rate, mm / tooth; Z-milling cutter teeth; n- milling cutter rpm, r / min. From (1) shows, as long as the increase of any one of the above three parameters, can improve the milling efficiency. However, it should be considered that as the feed rate Sz per tooth and the number of revolutions n increase, the abrasion of the cutting edge of the milling cutter becomes more serious. With the constant milling diameter, as the number of teeth increases, The size is also proportionately reduced, resulting in deterioration of chip conditions.