Technology for gluing stator punching sheet by adopting KH-225 glue, gluing technology and tool for gluing technology

A KH-225, stator punching technology, applied in the manufacture of stator/rotor body, etc., can solve the problems of dynamic pressure motor stator core glue, black lines, etc.

Pending Publication Date: 2021-10-08
SHAANXI AEROSPACE TIMES NAVIGATION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the qualified rate of production was only 20% to 30%, mainly showing that the stator core of the dynamic pressure motor was glued and the black line

Method used

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  • Technology for gluing stator punching sheet by adopting KH-225 glue, gluing technology and tool for gluing technology
  • Technology for gluing stator punching sheet by adopting KH-225 glue, gluing technology and tool for gluing technology
  • Technology for gluing stator punching sheet by adopting KH-225 glue, gluing technology and tool for gluing technology

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Experimental program
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Effect test

Embodiment Construction

[0035] The present invention provides a glue coating process for stator punching. The glue used in this process is KH-225 glue. The process will be further described in detail below. The specific steps are as follows:

[0036] S1. Cleaning: cleaning the film to remove surface oil;

[0037] In order to prevent corrosion, a layer of grease will be coated on the surface of the punching sheet, but the grease will have an isolation effect between the metal and the adhesive, thus affecting the adhesion between the metal and the adhesive. Therefore, degreasing treatment must be carried out first during the metal surface treatment process. In the performance test, we used gasoline and acetone to clean the surface of the test piece, and used the water film continuous method to check. We found that the grease on the surface of the punched piece can be cleaned by wiping with acetone. Therefore, we prefer acetone to clean the punched sheets. Because acetone has a pungent smell, this proce...

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PUM

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Abstract

The invention discloses a technology for gluing a stator punching sheet by adopting KH-225 glue. The technology comprises the following steps of S1, cleaning: cleaning the punching sheet to remove oil stains on the surface of the punching sheet, S2, gluing: gluing each punching sheet by adopting a heating gluing process, wherein the gluing temperature is kept at 65+/-5 DEG C, S3, clamping: gluing the punching sheets, stacking the punching sheets on a tool, and ensuring that the thickness of a glue layer between the punching sheets is greater than or equal to 5 microns after mounting, S4, curing: preserving heat at 80+/-5 DEG C for 6+/-0.1 h or preserving heat at 120+/-5 DEG C for 3+/-0.1 h, and S5, cooling: cooling along with the furnace for 12+/-2 hours, and then dismounting the tool and taking out a pressed finished product; on the basis of the gluing technology, gluing parameters and a clamping tool have originality, by adopting the technology, the gluing temperature is strictly controlled to enable the punching sheet to have better fluidity, gluing on the surface of the punching sheet is facilitated, the thickness of a glue layer is limited between 5 mum and 15 mum through the tool, what can be ensured is that the shearing strength is larger than or equal to 15 MPa, and cohesive stress and black lines caused by the too thick glue layer can be avoided.

Description

technical field [0001] The invention relates to a gluing process, in particular to a gluing process using KH-225 glue for stator punching, and a gluing process and a tooling for clamping in the process. Background technique [0002] The dynamic pressure motor, the core part of the aerospace inertial device, has the characteristics of special structure, high manufacturing precision requirements, and the working clearance of the bearing is micron level (the minimum is about 1 micron). Any excess may cause the minimum rotation voltage of the motor to rise. If it is too high, it will lead to out-of-tolerance. If it is serious, it may cause problems such as failure to start, and cause the gyro to lose its function. From the perspective of the shear strength and volatile substances of the glue, KH-225 glue with high shear strength and low volatility is selected as the adhesive. Make sure that no excess is produced, and that the bonding between the punches is required to be firm w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/02
CPCH02K15/02
Inventor 李东君叱干津王昊李文卓陈江马会强
Owner SHAANXI AEROSPACE TIMES NAVIGATION EQUIP CO LTD
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