Measurement and assembly method of combined gear

The invention discloses a method for measuring and assembling a combination gear, and relates to the technical field of measurement and assembly of the combination gear, and the method comprises the following steps: S1, grouping and measuring hole shafts in the combination gear; the step S1 comprises the steps of S1.1, size grouping of hole shafts, S1.2, measurement of holes and S1.3, measurement of shafts; in the step S2, the polishing quality of a hole, connected with a bolt, in a bolt shaft is checked at first, the surface of the bolt shaft is coated with lubricating oil, the bolt shaft is frozen for 1.5 h under the condition that the room temperature and the freezing temperature are guaranteed after coating is completed, then the bolt is pressed into the hole in the combined gear, then a small aluminum bar is used for gently knocking and installing the bolt, and then a nut is screwed to make contact with and be tightly attached to the hole; a cross method is adopted, and the eight nuts are tightened throu