Stator bolt for eliminating stator deformation of exciter and method of using the same

Abstract

The invention relates to stator bolts for eliminating exciter stator deformation and an application method of stator bolts, which relate to the technology of exciter stator manufacturing, and solve the problem that the existing stator is easy to deform. The stator bolts are reamed hole bolts, wherein a screw rod reamed shaft is formed by a plurality of subsections; the sections have the same structure and respectively comprise a reamed shaft section and a chamfering-shaped shaft section; each reamed shaft section is the shaft section matched with the dimension of an iron core bolt hole and makes contact with the stator iron core bolt hole; the diameter of the top part of each chamfering-shaped shaft section is matched with the diameter of the reamed shaft section, and each chamfering-shaped shaft section is inclined downwards according to a chamfer alpha so as to be in a turbination shape from the top part, is not in contact with the stator iron core bolt hole, and has the length smaller than the length of the reamed shaft section. According to the stator bolt for eliminating exciter stator deformation and the application method of the stator bolts, the traditional manufacturing manner of the exciter stator is improved, the four reamed hole bolts on four corners of the iron core of the stator adopt the structure with same opposite angles and different adjacent angles, the occurrence of the phenomenon of large deformation due to large clearance between the stator iron core and the bolt holes is reduced, the precision error after the stator iron core is finished is reduced, and the product quality is improved.

Description

technical field [0001] The invention relates to the manufacturing technology of the stator of the exciter, in particular to a stator bolt for eliminating the deformation of the stator of the exciter in the manufacture of the exciter and its use method in the manufacture of the stator of the exciter. Background technique [0002] The existing conventional exciter stator manufacturing process is as follows: [0003] Stack the stator punches together according to the inner diameter of the stator punches through the column tooling; [0004] After adjusting the shape and position tolerance of the stacked stack of stator punches through the slot-like rod, perform spot welding on the stacked stator punches in multiple places to roughly fix them to avoid deformation of the connected welding iron core due to high welding heat; After it is basically fixed, it is welded by argon arc welding in multiple strips to make the stator core; [0005] Transport the stator core to the processi...

AI Technical Summary

Problems solved by technology

[0010] 1. During the stacking and welding of the stator punching sheets, although it has been welded and fixed, the strength of the welded part is lower than that of the whole iron core, and the welding place will be deformed, so the stator punching sheets will be deformed. produce a relative offset;

[0011] 2. During the transportation process of each process, due to the direction of placement and bumps, there will be relative offset between the welded stator punches, which will deform the manufactured iron core;

[0012] 3. In the process of varnish dipping and baking, due to the difference in the amount of varnish dipping in each part, there will be a deviation force, which will affect the accuracy of the iron core, especially the deformation of the iron core caused by heating during the baking process

[0013] 4. The fixing bolts used for the four corners of the traditional iron core are ordinary bolts. The gap between the bolts and the bolt holes is relatively large, generally about two millimeters. About one millimeter, the iron core is deformed, and the end surface of the bolt head of the ordinary bolt is not guaranteed to be perpendicular to the screw part. In the process of tightening the ordinary bolt, the iron core will be deformed due to the deflection force generated by the bolt head on the iron core.

[0014] Due to the above reasons, the iron core will have a large deformation during the manufacturing process, which will bring inconvenience to the subsequent assembly process and the generation of waste and defective products.

[0015] In summary, the existing exciter positioning methods cannot meet the requirements for manufacturing high-quality stator products

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