Adjustable stator bar molding press device and machining method thereof

Abstract

The invention relates to an adjustable stator bar molding press device and a machining method thereof, and belongs to the technical field of hydraulic generators. The adjustable stator bar molding press device is characterized by comprising a straight weight, a straight upper weight, a countersunk screw and an adjustable spacer, wherein the central position of the straight weight is provided with a notch in which the straight upper weight is embedded; the notch is clamped and fastened with the countersunk screw; and the adjustable spacer is arranged between the straight weight and the straight upper weight. The machining method for the adjustable stator bar molding press device is characterized by comprising the following steps of: stacking upper and lower layers of stator bars on a bracket, disassembling a cloth tape, adhering resin-rich mica plates on the two sides and wrapping the stator bars with a polytetrafluoroethylene tape; adjusting the position of a colloidizing mold between the upper and lower layers of stator bar strands on a multi-head oil press; performing molding press between the strands and placing the stator bars in a cooling shaping mold for shaping; and cleaning off chamfers after the cooling. The device and the method have the advantages of simple process, convenient adjustment, high universality, high production efficiency, high product quality and the like.

Description

technical field [0001] The invention belongs to the technical field of hydroelectric generators, and in particular relates to an adjustable stator bar profiling device and a processing method thereof. Background technique [0002] At present, the generator stator bar is the key component of the hydroelectric generator. Its quality directly affects the service life of the hydro-generator. In the prior art, the tooling design of the height direction dimension of the stator bar pressing die adopts the integral processing of the linear weight and the linear upper weight, especially the linear upper weight. The processing precision and cross-sectional size are high, and the processing is very difficult. The stator wire rod is placed in the forming die, and the hydraulic forming process is carried out in the multi-head hydraulic press. Affected by various factors in the hydraulic system, it is easy to appear in the forming process. In the middle, it is not easy to control the hei...

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Problems solved by technology

Its quality directly affects the service life of the hydro-generator. In the prior art, the tooling design of the height direction dimension of the stator bar pressing die adopts the integral processing of the linear weight and the linear upper weight, especially the linear upper weight. The processing precision and cross-sectional size are high, and the processing is very difficult. The stator wire rod is placed in the forming die, and the hydraulic forming process is carried out in the multi-head hydraulic press. Affected by various factors in the hydraulic system, it is easy to appear in the forming process. In the middle, it is not easy to control the height dimension out of tolerance, and it is necessary to re-machine the linear weight and the linear upper weight

This processing operation is time-consuming and laborious. It is necessary to re-align the linear weight and the linear upper weight on the milling machine. The work efficiency is low, which increases the labor intensity of the operator and the production cost of the motor. In addition, the increase in working hours affects the product. production cycle

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