A simple forming method of armature coil with different slots in dc traction motor

Abstract

The invention discloses a simple molding method of armature coils with different slots of a DC traction motor, comprising the following steps: (1) two groups of armature coils are closely attached toeach other to perform angle stripping treatment and form a nose part, and then the nose part of the armature coil is clamped on a knocking mold; (2), knocking the non-metal cushion block on the plateof the armature coil by a metal hammer, so that the low layer edge is completely in contact with the knocking mold; (3) forming the inner side group coil of the upper layer side by the method of step2, wedging the middle section of the inner side group coil of the upper layer side with a stopper, and then forming the outer side group coil of the upper layer side by the method of step 2. The different slot armature coil are formed on the same set of knock mould, the double clamping in the grouping molding process is avoided, the molding efficiency is high, the adherence degree of the lower layer edge after molding is high, and the integrality is good. In addition, a stopper is skillfully used to simulate the state of the different slot armature coil when the wire is embedded, so that the different slot spacing on the upper side is accurate.

Description

technical field [0001] The invention relates to an armature coil of a DC motor, in particular to a simple forming method for an armature coil of a DC traction motor with different slots. Background technique [0002] The traditional forming method of different-slot armature coils for DC traction motors is as follows: figure 2 and image 3 The shown armature coils are regarded as two groups, namely winding 1 and winding 2. Two sets of knocking molds are used to shape winding 1 and winding 2 respectively, and then the lower layers of winding 1 and winding 2 are combined together. Since the two sets of armature coils have three corners at the nose and the lower side, and the inner winding and outer winding of the lower side of the combined armature coil are formed in two sets of moulds, the corners will inevitably appear disobedient, so after the combination The lower side of the armature coil is less compliant, resulting in a thicker overall section of the lower side, and it...

AI Technical Summary

Problems solved by technology

Since the two sets of armature coils have three corners at the nose and the lower side, and the inner and outer windings of the lower side of the combined armature coils are formed in two sets of moulds, the corners will inevitably appear incongruous, so after the combination The lower side of the armature coil is not well-fitted, resulting in a thicker overall section of the lower side, and it is also difficult for the upper side to accurately correspond to the adjacent two slots.

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