在生产中常遇到一些细长孔(槽)的加工,由于结构上原因和条件的限制成了目前难加工的问题之一。本文涉及的细长孔系指直径(宽)在4～12mm,长(深)径(宽)比大于5的深孔(槽),并就此范围内的细长通孔加工用刀具结构的设计和使用加以讨论。通常使用的加长刃立铣刀(切削刃长度不超过其直径的4倍),一般说来使用效果不佳,很容易折断,加工的精度和表面粗糙度均难于达到要求。这种 In the production often encountered some elongated hole (groove) processing, due to structural reasons and conditions have become one of the problems difficult to process. Slender holes referred to herein are deep holes (slots) with a diameter (width) of 4 to 12 mm and a long (deep) diameter (width) ratio of more than 5, and the design of the tool structure for the slender through hole machining in this range And use to be discussed. The commonly used long edge cutter (cutting edge length no more than 4 times its diameter), in general, the use of poor results, it is easy to break, processing accuracy and surface roughness are difficult to meet the requirements. This