JPS6411038A - Production of precise metal disk - Google Patents
Production of precise metal diskInfo
- Publication number
- JPS6411038A JPS6411038A JP16696887A JP16696887A JPS6411038A JP S6411038 A JPS6411038 A JP S6411038A JP 16696887 A JP16696887 A JP 16696887A JP 16696887 A JP16696887 A JP 16696887A JP S6411038 A JPS6411038 A JP S6411038A
- Authority
- JP
- Japan
- Prior art keywords
- reducing
- mandrel
- expanding
- blank
- diameter
- 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
- Forging (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
PURPOSE:To prevent the defect generation of a product by elastically reducing the diameter of a die ring, elastically expanding the diameter of a mandrel, if necessary, as well and releasing the reducing and expanding states after coining. CONSTITUTION:The die ring 4 regulating the spreading of a blank 3 to the outer peripheral side is provided and a reducing ring 6 is arranged as well. In the case of the blank 3 having a center hole an expanding rod 7 is set up for a mandrel 5. The blank 3 is mounted on a lower die 1, the reducing ring 6 and mandrel 5 are descended and the diameter of the die ring 4 is reduced. The mandrel 5 is then expanded by pushing the expanding rod 7 into the tapered hole of the mandrel 5 and coining is executed in that state. In succession the diameter reducing and expanding states are released to obtain a product disk. Due to the blank 3 being worked in reducing and extending states the defect generation of a roll over, seizure, etc., is prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16696887A JPS6411038A (en) | 1987-07-06 | 1987-07-06 | Production of precise metal disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16696887A JPS6411038A (en) | 1987-07-06 | 1987-07-06 | Production of precise metal disk |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6411038A true JPS6411038A (en) | 1989-01-13 |
Family
ID=15840958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16696887A Pending JPS6411038A (en) | 1987-07-06 | 1987-07-06 | Production of precise metal disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6411038A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002077985A1 (en) * | 2001-03-21 | 2002-10-03 | Steag Hamatech Ag | Device for joining substrates |
-
1987
- 1987-07-06 JP JP16696887A patent/JPS6411038A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002077985A1 (en) * | 2001-03-21 | 2002-10-03 | Steag Hamatech Ag | Device for joining substrates |
US7182116B2 (en) * | 2001-03-21 | 2007-02-27 | Steag Hamatech Ag | Device for joining substrates |
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