JPS5788921A - Manufacture of dial plate for timepiece - Google Patents
Manufacture of dial plate for timepieceInfo
- Publication number
- JPS5788921A JPS5788921A JP16613580A JP16613580A JPS5788921A JP S5788921 A JPS5788921 A JP S5788921A JP 16613580 A JP16613580 A JP 16613580A JP 16613580 A JP16613580 A JP 16613580A JP S5788921 A JPS5788921 A JP S5788921A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- outer shape
- small hole
- lowered
- hole piercing
- 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
Abstract
PURPOSE: To adopt many-kind and small-quantity productions by reducing number of metallic molds and shortening the working hour, by forming dial plates for timepieces with one metallic mold and one process.
CONSTITUTION: When a raw material for dial substrate 1a is fed into a metallic mold and held between a stripper 100 and a knockout 105, an outer shape forming pushing punch 102 is compressed and a small hole piercing die 103 is set to a closed condition. When the raw material for dial substrate 1a is deeply lowered, it is half punched to an outer shape with the outer shape forming and pushing punch 102 under a condition near the shearing resistance of the raw material 1a. When the stroke is further lowered, the raw material 1a is pierced with stationary small hole piercing punches 106, 107, and 108. Moreover, the blanking is performed with an outer shape forming die 104. When the upper subside is raised, the pressure of the small hole piercing die 103 is released and lowered and the 1st process is completed. This process is continuously done.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16613580A JPS5788921A (en) | 1980-11-26 | 1980-11-26 | Manufacture of dial plate for timepiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16613580A JPS5788921A (en) | 1980-11-26 | 1980-11-26 | Manufacture of dial plate for timepiece |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5788921A true JPS5788921A (en) | 1982-06-03 |
JPS6351767B2 JPS6351767B2 (en) | 1988-10-17 |
Family
ID=15825675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16613580A Granted JPS5788921A (en) | 1980-11-26 | 1980-11-26 | Manufacture of dial plate for timepiece |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5788921A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017192963A (en) * | 2016-04-20 | 2017-10-26 | 株式会社小松精機工作所 | Method for manufacturing press metal mold, press working method and press metal mold mechanism |
-
1980
- 1980-11-26 JP JP16613580A patent/JPS5788921A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017192963A (en) * | 2016-04-20 | 2017-10-26 | 株式会社小松精機工作所 | Method for manufacturing press metal mold, press working method and press metal mold mechanism |
Also Published As
Publication number | Publication date |
---|---|
JPS6351767B2 (en) | 1988-10-17 |
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