Machining process for straight groove

The invention provides a machining process for a straight groove. The machining process comprises the following steps that S1, rough machining is carried out, specifically, a fly cutter with the diameter larger than a R angle of the straight groove is used for primary rough machining, and then a fly cutter with the diameter smaller than or equal to the R angle of the straight groove is used for secondary rough machining; S2, semi-finish milling is carried out; S3, finish milling is carried out; S4, semi-finish milling of the bottom surface is carried out; S5, the back surface or the side surface of the straight groove is machined; S6, the R angle is machined; S7, finish milling of the plane is carried out; S8, side wall finish milling is carried out; and S9, bottom surface smoothening is carried out. The machining process for the straight groove is high in machining precision and high in yield. 本发明提供了一种直身槽的加工工艺，S1：开粗：用直径大于直身槽R角的飞刀一次开粗，再用一把直径小于或等于直身槽R角的飞刀中粗；S2：中光；S3：光刀；S4：光底面；S5：背面或侧面的直身槽加工；S6：加工R角；S7：光平面；S8：光