Forming die and method of direct-current traction motor armature coil

Abstract

The invention provides a forming die of a direct-current traction motor armature coil and belongs to the technical field of forming of armature coils. The forming die comprises a forming die body, a coil clamping unit and a forming baffle; the coil clamping unit comprises a grooved slide rail arranged on the forming die body, a nose clamp located on the grooved slide rail, a screw pushing the noseclamp to slide and a screw mounting seat, and a clamping groove is arranged in one end of the nose clamp; clamping rollers and clamping jigs are arranged on the outer side of the forming baffle, andthe clamping rollers have the armature coil pressed fixedly on the outer periphery of the forming baffle through the clamping jigs. The invention further provides a forming method of the armature coil. The forming baffle can be adjusted according to the shape of the armature coil, forming of a straight grooved armature coil and an oblique grooved armature coil can be realized, and wide applicationis achieved; when to be formed, the armature coil is fixed on the outer periphery of the forming baffle, and the armature coil is fixedly clamped for a period of time and is tapped slightly with a tapping plate along the outer periphery of the forming baffle to be formed.

Description

technical field [0001] The invention belongs to the technical field of armature coil forming, in particular to a forming die and method for an armature coil of a DC traction motor. Background technique [0002] The working part of the armature coil embedded in the inclined slot of the DC traction motor forms an angle with the axis of the armature, and fits the bottom of the iron core slot into a helical shape. The spatial position of the two ring edges where the coil is embedded in the iron core slot is complicated, and it is difficult to form it accurately. The shape and size of the DC motor armature coil directly affects the wire embedding process and is related to the reliability of the armature application. [0003] The arc shape of each circle of the chute coil is carefully analyzed. It is a part of an ellipse at an angle to the axis of the armature. It is calculated and processed into its shape to form a circle of the chute coil. However, considering that the two arc...

AI Technical Summary

Problems solved by technology

However, considering that the two arc-shaped ring edges and the termination parts at both ends of the coil must be completed on one forming tool, it is complicated and difficult to ensure the accuracy of the entire coil shape.

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