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A processing method for high-speed generator rotor core assembly

A technology of rotor iron core and processing method, which is applied in the direction of electric components, manufacture of motor generators, electrical components, etc., can solve problems such as affecting the normal operation of high-speed generators, punching of rotor iron core components, and breakage of damping copper bars, etc. Achieve the effect of reducing eddy current loss and improving insulation performance

Active Publication Date: 2016-08-10
SHAANXI AVIATION ELECTRICAL
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  • Claims
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AI Technical Summary

Problems solved by technology

And because when the iron core punching piece is welded by electron beam at the pole piece of the iron core, a weld seam of about 2mm is formed on the side of the iron core pole shoe punching piece. Although the iron core punching piece is formed into an integral core assembly, the weld Existence and welding stress make the iron core punching sheet form a weak link at the welding place. When the strength of the weak point is lower than the external force formed by high-speed rotation, when the rotor assembly rotates at high speed, the rotor iron core assembly punching sheet and damping copper strip will be damaged. Fracture and damage, affecting the normal operation of the high-speed generator

Method used

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  • A processing method for high-speed generator rotor core assembly
  • A processing method for high-speed generator rotor core assembly

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specific Embodiment

[0035] Step 1: Before lamination of the rotor lamination 2, use CBP-I adhesive to spray one side of the iron core lamination, and preheat at 65±2°C for 15 minutes to form a layer of solid adhesive film on the surface of the 2 before lamination ;

[0036] Step 2: Retain 15-20 pieces of rotor punches with a thickness of 0.35mm on both sides of the rotor core. Glue-coating process is adopted: that is, no adhesive is applied to the pole body and pole shoe parts, and glue is applied to the rest of the parts. Preheat at 65±2°C for 15 minutes to form a solid film on the surface of 2 before lamination;

[0037] Step 3: On the rotor core assembly stacking jig, stack in the order of rotor copper end plate 3→glue-coated punch 6→glue-spray punch 5→glue-coated punch 6→rotor copper end plate 3, and press on-board pressurization;

[0038] Step 4: Take out the rotor core assembly, install the damping copper strip and weld it;

[0039] Step 5: After the welding is completed, bake and cure a...

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Abstract

The invention relates to a processing method for a rotor core assembly of a high-speed generator, which uses a liquid adhesive that can form a solid adhesive film before curing. The copper damping strip will not be polluted in the middle; the method of local glue coating on the iron core punching sheet in the range of 6±1mm from the copper end plate will not affect the link between the copper damping strip and the copper end plate, and can ensure the gap between the iron core punching sheet. bonding between. The present invention has the following advantages: the overall strength of the rotor iron core assembly can be improved by adhesive bonding, and the damage caused by welding to the iron core punching is overcome; the local glue coating method of the end punching sheet does not affect the damping strip and the copper end Welding of plates; using adhesive to bond core punches can improve the insulation performance between rotor core punches and reduce eddy current loss of rotor core components.

Description

technical field [0001] The invention belongs to a processing method of a motor rotor iron core assembly, and relates to a processing method of a high-speed generator rotor iron core assembly. Background technique [0002] With the development of aviation power system technology, the capacity demand of aviation generators will become larger and larger. Due to the particularity of the application field of aero-motor products, the aero-generator is required to have lighter weight and high power density. Therefore, the requirements for the speed of aero-generators are getting higher and higher, and the speed of some generators exceeds 24000r / min. As for the rotor core with salient pole structure in the generator main rotor, when the main rotor is working, the main rotor core, field winding and slot wedges will generate huge centrifugal force on the slot wedges and the main rotor pole shoes. , the pole shoes of the main generator rotor will generate a lot of internal stress loc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/02H02K15/12
Inventor 淡宏斌李昂武雪宁程伟王润辰
Owner SHAANXI AVIATION ELECTRICAL
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