Method for processing chute on armature spider of DC motor rotor

Abstract

The invention discloses a method for processing a chute on an armature spider of a DC motor rotor, which comprises the following steps of: 1, vertically fixing the armature spider on a rotary table of a boring miller; 2, based on a designed included angle alpha between the chute on the armature spider and an axis of the armature spider, padding a seat pad of which the upper and lower end faces form an angle of alpha under the rotary table; 3, taking the axial middle position of the armature spider as an adjusting datum position of a milling cutter; 4, respectively upwards and downwards movingthe milling cutter from the adjusting datum position to the upper and lower ends of the chute needing to be processed, vertically upwards or downwards moving the chute needing to be processed with the milling cutter when the milling cutter cuts, and determining a cut depth of layered cutting of the milling cutter according to the milling rigidity of the milling cutter and the depth of the chute; and 5, rotating the rotary table at a certain angle theta and then sequentially repeating the step 3 to the step 4.

Description

Technical field [0001] The invention relates to a processing method, in particular to a processing method of an oblique slot on an armature support of a DC motor rotor. Background technique [0002] In order to improve the running performance of the large-scale DC motor, the slot of the armature embedded coil is generally designed as a linear chute. The chute 21 on the outer circle of the armature core 2 is positioned by driving the oblique key in the key groove 20 distributed on the inner circle of the armature core 2 and the chute 10 distributed on the armature support 1 (see figure 1 ), the oblique key includes a circumferential positioning oblique key 31 and a radial positioning oblique key 32, which are driven into the key grooves 20 distributed on the inner circle of the armature core 2 and the oblique grooves 10 distributed on the armature support 1 in the form of intervals In other words, the chute 21 on the outer circle of the armature core 2 is determined by the chute 1...

AI Technical Summary

Problems solved by technology

Since the thickness of the oblique key is consistent from the beginning to the end, and the depth of the key groove on the inner circle of the iron core is also consistent, after the oblique key is driven into the key groove of the inner circle of the armature core and the inclined groove on the armature bracket, the One end is loose and the other end is tight, which makes the motor prone to failure during operation

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