Machining method of shaft part key grooves with multiple specifications and multiple angles

The invention discloses a machining method of shaft part key grooves with multiple specifications and multiple angles. The machining method comprises the steps that tools are installed, and the tools are installed on a workpiece and adjusted; upper roll shafts are erected through V-shaped iron at the two ends, and a dial indicator is pulled by 90 degrees in the two directions for calibration; a stator disk I is installed, a 36P9 key groove is machined on the center line, the upper roll shafts are rotated, and a 36P9 key groove with the included angle of 120 degrees in the other direction is machined; a stator disk II is adjusted and installed accurately, 56P9 key grooves on other two center lines are machined according to the previous steps. According to the machining method of the shaft part key grooves with the multiple specifications and the multiple angles, positioning is accurate, machining precision is high, the production efficiency is improved, the machining cost is reduced, the interchangeability of machined products is good, and the difficulty and cost of maintenance service are greatly reduced.