A kind of manufacturing method of tension screw type laminated iron core

A technology of tightening screw and manufacturing method, which is applied in the manufacturing field of laminated iron cores, can solve problems such as easy reduction of compression degree, failure to eliminate stress, and damage to coil insulation, so as to avoid local heating, reduce production costs, and improve electrical performance. performance effect

Active Publication Date: 2020-03-27
湖南湘电动力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] During the operation of the motor, the compression degree of the conventional tightened screw type external press-fit stator core is easy to decrease, and even loosens, which increases the vibration of the conventional tension screw type external press-fit stator core. , and correspondingly increase the noise of the motor
Long-term operation of the motor will cause fatigue damage to the fasteners of the conventional tension screw type external press-fit stator core, and local heating of the conventional tension screw type external press-fit stator core will damage the conventional tension screw type. Insulation of the coils embedded in the outer press-fit stator core, thereby compromising the electrical performance of the motor
[0014] On the other hand, when the conventional tightened screw type outer press-fit stator core is laminated and formed according to the conventional tension screw type outer press-fit stator core manufacturing process, the tightened screw outer The stress generated by the stamping of the press-fit stator core during the stacking assembly process is not eliminated; at the same time, the stamping of the stamping of the screw-type outer press-fit stator core is produced during the stamping process in the previous process. Stress is not relieved
Therefore, when the conventional tension screw type external press-fit stator core is laminated and formed according to the conventional tension screw type external press-fit stator core, the conventional tension screw type external press-fit stator iron core The core is prone to distortion, deformation and other problems
As a result, it is difficult to embed the wire of the screw-type external press-fit stator core in the next process, and even damage the insulation of the embedded coil, and eventually damage the electrical performance of the motor
In addition, when tightening the screw-type external press-fit stator core sleeve stator frame in the next process, it is difficult to assemble, or even scrapped, which increases production costs

Method used

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  • A kind of manufacturing method of tension screw type laminated iron core
  • A kind of manufacturing method of tension screw type laminated iron core
  • A kind of manufacturing method of tension screw type laminated iron core

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Effect test

Embodiment 1

[0039] Embodiment one, see appendix figure 1 , the present invention tension screw type outer pressure-mounted stator iron core 1 uses a kind of manufacture method of iron core of the present invention, and it comprises the following steps:

[0040] Step 1. Stretch the screw-type external press-fit stator core 1 and stack the iron core punching pieces I2, install the tensioning screw I3, apply axial segmental pressure to the stator core 1, and stack the iron core punching pieces I2 And after the pressure is applied, in the compressed state, preliminarily tighten the fastening element of the tension screw I3 of the tension screw type outer press-fit stator core 1: nut I4;

[0041] Step 2, compaction treatment, that is, perform compaction treatment on the preliminarily tightened tension screw type external press-fit stator core 1;

[0042] Step 3. When the iron core is at normal temperature, re-tighten the tension screw Ⅰ3 of the tension screw type external press-fit stator cor...

Embodiment 2

[0048] Embodiment two, see appendix figure 1 , the present invention tension screw type outer pressure-mounted stator iron core 1 uses a kind of manufacture method of iron core of the present invention, and it comprises the following steps:

[0049] Step 1. Stretch the screw-type external press-fit stator core 1 and stack the iron core punching pieces I2, install the tensioning screw I3, apply axial segmental pressure to the stator core 1, and stack the iron core punching pieces I2 And after the pressure is applied, in the compressed state, preliminarily tighten the fastening element of the tension screw I3 of the tension screw type outer press-fit stator core 1: nut I4;

[0050] Step 2, compaction treatment, that is, perform compaction treatment on the preliminarily tightened tension screw type external press-fit stator core 1;

[0051] Step 3. When the iron core is at normal temperature, re-tighten the tension screw Ⅰ3 of the tension screw type external press-fit stator cor...

Embodiment 3

[0057] Embodiment three, referring to the attached figure 2 , embodiment 2 tightening screw rod type internal press-fit stator iron core 6 uses a kind of manufacturing method of iron core of the present invention, and it comprises the following steps:

[0058] Step 1. In the machine base 7, stack the iron core punching sheet II 8 of the tension screw type internal press-fit stator core 6, install the tension screw II 9, and apply axial segmental pressure to the stator iron core 6, After the iron core punching sheet Ⅱ8 is stacked and pressed, in the compacted state, preliminarily tighten the tightening element of the tension screw Ⅱ9 of the tension screw type inner press-fit stator core 6: nut Ⅱ10;

[0059] Step 2, compaction treatment, that is, perform compaction treatment on the preliminarily tightened tension screw type internal press-fit stator core 6;

[0060] Step 3. When the iron core is at room temperature, re-tighten the tightening screw II 9 of the tightened screw-t...

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Abstract

The invention relates to a method for manufacturing a tension screw type laminated iron core, which comprises the following steps: step 1, stacking of punching sheets of the iron core and installationof tension screws: axially applying pressure on the punching sheets of the iron core by sections, and after the punching sheets of the iron core are stacked and pressed, preliminarily tightening fastening elements of the tension screws of the iron core in the compressed state; step 2, compaction processing: performing compaction processing on the iron core that is preliminarily tightened; step 3,when the iron core is at room temperature, tightening the tightening screws of the iron core subjected to compaction processing again; and step 4, spot welding for fixation: performing spot welding on the tension screws and the fastening elements thereof, so that the iron is fixed as one piece. Through the newly-added compaction processing, and re-tightening and then spot welding after the compaction processing, the iron core is formed as one piece to avoid the loosing of the laminated iron core loose, the laminated iron core is not easy to produce distortion and deformation, and ultimately the electrical performance of the motor is ensured and the working efficiency is improved.

Description

technical field [0001] The invention relates to a method for manufacturing a laminated iron core, in particular to a method for manufacturing a tension screw type laminated iron core. Background technique [0002] The types of laminated cores include: stator cores, rotor cores, pole cores, etc. Structurally, the laminated iron core includes at least one stack of iron core punching pieces, a set of axial fastening elements, and corresponding fasteners, locking devices and or spot welding fixing structures. [0003] The iron core is one of laminated iron cores. The iron core includes at least one set of laminations of iron core punching sheets, and a set of axial fastening elements, and the axial fastening elements are tension screws, and the fastening elements, locking devices and Or spot welding fixed structure. [0004] Corresponding to the type of laminated iron core, the corresponding iron core type includes: tensioned screw type stator core, tensioned screw type rotor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/02
CPCH02K15/02
Inventor 王菁雷雄郑毅锋贺开华赵一香
Owner 湖南湘电动力有限公司
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