JPS5731421A - Blanking method of iron core - Google Patents
Blanking method of iron coreInfo
- Publication number
- JPS5731421A JPS5731421A JP10577680A JP10577680A JPS5731421A JP S5731421 A JPS5731421 A JP S5731421A JP 10577680 A JP10577680 A JP 10577680A JP 10577680 A JP10577680 A JP 10577680A JP S5731421 A JPS5731421 A JP S5731421A
- Authority
- JP
- Japan
- Prior art keywords
- stage
- blanked
- holes
- core
- blanking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Punching Or Piercing (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
PURPOSE: To eliminate the repairing after lamination while diminishing the defective products and to improve tool life, in case when blanking the outer shape of the iron core of the roter from the intermittently moving steel band, and then blanking accurately the inner shape of the iron core of the armature, by simultaneously blanking its slots openings.
CONSTITUTION: The band of electric steel plate S is intermittently fed by the pitch of pilot holes 1 toward (m) direction. At a stage I, the holes 1 a part 2a of the slot holes of an armature core are blanked out while leaving openings 9a of slots. At a stage II, slot holes 3 and a shaft holes 4, at a stage III, the outer shape 5 of a roter core are blanked. At a stage IV the inner shape 6b of the armature core, the residual part 9a of the stage I, and at a stage V the outer shape 7 of the armature core are blanked. Here the openings 9a which project in the inner diameter of dies at right angles and opens radially, and the inner shape 6b are blanked simultaneously, so as to make the opening 9b bite the inside of die and to make the opening 9b prevent a scrap 6c from shrinking by the side pressure of dies thus producing no problem of buoyancy and stabilizing its precise dimensions.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10577680A JPS5731421A (en) | 1980-07-31 | 1980-07-31 | Blanking method of iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10577680A JPS5731421A (en) | 1980-07-31 | 1980-07-31 | Blanking method of iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5731421A true JPS5731421A (en) | 1982-02-19 |
| JPS6139132B2 JPS6139132B2 (en) | 1986-09-02 |
Family
ID=14416552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10577680A Granted JPS5731421A (en) | 1980-07-31 | 1980-07-31 | Blanking method of iron core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5731421A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61150636A (en) * | 1984-12-24 | 1986-07-09 | Kuroda Precision Ind Ltd | Punching and forming method of fixed iron core for electric motors, etc. |
| JPH07177709A (en) * | 1993-12-20 | 1995-07-14 | Oriental Motor Co Ltd | Method for manufacturing iron plate for laminated iron core |
| JP2005176596A (en) * | 2003-12-10 | 2005-06-30 | Lg Electron Inc | Manufacturing method of stator core and back yoke of outer rotor type motor for washing machine |
| JP2011182619A (en) * | 2010-03-04 | 2011-09-15 | Kuroda Precision Ind Ltd | Method and device for manufacturing stacked iron core |
| JP2022508153A (en) * | 2018-11-20 | 2022-01-19 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Multilayer punching methods and equipment for manufacturing metal parts such as rotor laminate sheets and stator laminate sheets for electric motors. |
-
1980
- 1980-07-31 JP JP10577680A patent/JPS5731421A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61150636A (en) * | 1984-12-24 | 1986-07-09 | Kuroda Precision Ind Ltd | Punching and forming method of fixed iron core for electric motors, etc. |
| JPH07177709A (en) * | 1993-12-20 | 1995-07-14 | Oriental Motor Co Ltd | Method for manufacturing iron plate for laminated iron core |
| JP2005176596A (en) * | 2003-12-10 | 2005-06-30 | Lg Electron Inc | Manufacturing method of stator core and back yoke of outer rotor type motor for washing machine |
| JP2011182619A (en) * | 2010-03-04 | 2011-09-15 | Kuroda Precision Ind Ltd | Method and device for manufacturing stacked iron core |
| JP2022508153A (en) * | 2018-11-20 | 2022-01-19 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Multilayer punching methods and equipment for manufacturing metal parts such as rotor laminate sheets and stator laminate sheets for electric motors. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6139132B2 (en) | 1986-09-02 |
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