JPS5443514A - Preparating rotor magnet for electronic wristwatch - Google Patents
Preparating rotor magnet for electronic wristwatchInfo
- Publication number
- JPS5443514A JPS5443514A JP11075177A JP11075177A JPS5443514A JP S5443514 A JPS5443514 A JP S5443514A JP 11075177 A JP11075177 A JP 11075177A JP 11075177 A JP11075177 A JP 11075177A JP S5443514 A JPS5443514 A JP S5443514A
- Authority
- JP
- Japan
- Prior art keywords
- punching
- permanent magnet
- magnet plate
- mold
- shape
- 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.)
- Pending
Links
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
PURPOSE: To promote a reduction of labor required for processing and an improvement of working precision, by means of operating a work of press punching and driving of the rotor magnet at the same time, with an intermediate material of bush- shape untilized partially for a work of mold punching.
CONSTITUTION: A rare earth bonding magnet, with a compound powder of samarium and cobalt made binding by a resin of epoxy system, is applied heat to be made into a plate-shape obtaining a permanent magnet plate 5. Using an intermediate material 3 of bush-shape, installed to a mold punch 4 and constructed by a brass with Pb included for the punching tool, said permanent magnet plate 5 is processed punching after with the intermedate material 3 remained placing as it is in the permanent magnet plate 5, said permanent magnet plate 5 is processed in its outside diameter by using a punching mold of outside diameter, and then applied heat with the binding material made into a state of perfect polymerization simultaneously with a security firmly made to the intermediate material 3. In this way, a working man-hour will be halved with a dimensional precision heightened as well compared with that in a case of press punching.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11075177A JPS5443514A (en) | 1977-09-13 | 1977-09-13 | Preparating rotor magnet for electronic wristwatch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11075177A JPS5443514A (en) | 1977-09-13 | 1977-09-13 | Preparating rotor magnet for electronic wristwatch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5443514A true JPS5443514A (en) | 1979-04-06 |
Family
ID=14543624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11075177A Pending JPS5443514A (en) | 1977-09-13 | 1977-09-13 | Preparating rotor magnet for electronic wristwatch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5443514A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2497021A1 (en) * | 1980-12-22 | 1982-06-25 | Vdo Schindling | Electro-motor for timepiece - has punched rotor comprising magnetic material with plastic binder |
| US10236742B2 (en) | 2014-11-25 | 2019-03-19 | Black & Decker Inc. | Brushless motor for a power tool |
| US10328566B2 (en) | 2015-10-14 | 2019-06-25 | Black & Decker Inc. | Brushless motor system for power tools |
-
1977
- 1977-09-13 JP JP11075177A patent/JPS5443514A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2497021A1 (en) * | 1980-12-22 | 1982-06-25 | Vdo Schindling | Electro-motor for timepiece - has punched rotor comprising magnetic material with plastic binder |
| US10236742B2 (en) | 2014-11-25 | 2019-03-19 | Black & Decker Inc. | Brushless motor for a power tool |
| US10523081B2 (en) | 2014-11-25 | 2019-12-31 | Black & Decker Inc. | Brushless motor for a power tool |
| US10328566B2 (en) | 2015-10-14 | 2019-06-25 | Black & Decker Inc. | Brushless motor system for power tools |
| US10328567B2 (en) | 2015-10-14 | 2019-06-25 | Black & Decker Inc. | Brushless motor system for power tools |
| US10500708B2 (en) | 2015-10-14 | 2019-12-10 | Black & Decker Inc. | Power tool |
| US10786894B2 (en) | 2015-10-14 | 2020-09-29 | Black & Decker Inc. | Brushless motor system for power tools |
| US11951603B2 (en) | 2015-10-14 | 2024-04-09 | Black & Decker Inc. | Brushless motor system for power tools |
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