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在制造铣刀的时候,常常用双角铣刀来给工件开齿。计算偏移量S和铣切深度H的公式,一般是按双角铣刀绝对尖的条件推导出来的。一些书籍中已有简便的计算公式介绍,但有误差,对于刀尖r小于1.5毫米双角铣刀,造成工件前角的误差,可在允许范围内;当工件齿槽r大于1.5毫米时,则要用专用的双角铣刀来加工,此时计算公式误差不可忽视。下面介绍一种考虑刀尖r的计算公式。
In the manufacture of milling cutter, often with double corner cutter to open the workpiece. The formula for calculating the offset S and the milling depth H is generally derived from the absolute tip condition of the double corner milling cutter. Some books have a simple calculation formula introduced, but there are errors, for the tip r less than 1.5 mm double corner cutter, resulting in the workpiece rake angle error can be within the allowable range; when the workpiece cogging r greater than 1.5 mm, You have to use a dedicated double-angle milling cutter to process, then the formula error can not be ignored. Here’s a calculation considering the tool nose r.