Commutator press-fitting device and press-fitting method for skewed iron core rotor

Abstract

The invention discloses a commutator pressing assembling device of a skewed slot iron core rotor and a pressing assembling method thereof. The pressing assembling device comprises a pressing assembling base, a positioning column, a guide column, a positioning ring, a spring and a pressing head. The pressing head is positioned above the positioning column. The positioning column and the guide column are arranged on the pressing assembling base respectively. The guide column is provided with a positioning sleeve which is provided with a cylindrical pin for fixing a skewed slot iron core rotor. The positioning ring is fixed on the pressing assembling base through a positioning button B. The spring is sleeved on the guide column and is placed between the positioning sleeve and the pressing assembling base. The pressing assembling method comprises the steps of the combination of the pressing assembling device and a pressing assembling operation, and the commutator pressing assembling operation is carried out combined with the pressing assembling device and a pneumatic press with adjustable pressure. According to the device and the method, through adopting a high precision mechanical conversion link, the accurate alignment of a commutator lower notch groove center with a skewed slot iron core groove center or tooth center is realized, and the production efficiency and product qualification rate are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of commutator press-fitting for rotors, and relates to a commutator press-fit device for a skewed iron core rotor and a press-fit method thereof. Background technique [0002] The press-fitting of the commutator of the traditional inclined-slot iron core rotor mostly uses the method of aligning the sleeve to ensure that the center of the lower groove of the commutator is aligned with the center of the notch on the end face of the iron core or the center of the teeth on the end face of the iron core through visual inspection, and then use The indenter is pressed in place, and the axial position is determined by the shoulder on the shaft or the length of the indenter. The press-fitting is performed in a single piece on a lever press. [0003] Such as figure 1 As shown, the traditional commutator pressing tooling is mainly composed of a pressure head 1 , an alignment sleeve 3 and a base 5 . During the press-f...

AI Technical Summary

Problems solved by technology

[0004] like figure 1 , figure 2 As shown, the traditional commutator press-fitting tool is used. Since the press-fitting is done by aligning the opening edge line 6 of the sleeve 3, the center of the lower groove of the commutator 2 and the center of the groove on the end face of the iron core or the center of the iron core can be ensured by visual inspection. The centers of the teeth on the end faces are aligned, so the accuracy is poor. A considerable part of the motors fail to pass the left and right slip during the whole machine test, which will cause the reworked end cover to move the brush slot or the armature to be scrapped, affecting the pass rate of the whole machine.

At the same time, due to manual visual alignment and single-piece operation on a lever press, the efficiency is low, which has a negative impact on the production efficiency of this type of motor and the quality assurance of the whole machine in the later stage.

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