JPS5766507A - Manufacture of turntable - Google Patents
Manufacture of turntableInfo
- Publication number
- JPS5766507A JPS5766507A JP14318180A JP14318180A JPS5766507A JP S5766507 A JPS5766507 A JP S5766507A JP 14318180 A JP14318180 A JP 14318180A JP 14318180 A JP14318180 A JP 14318180A JP S5766507 A JPS5766507 A JP S5766507A
- Authority
- JP
- Japan
- Prior art keywords
- turntable
- forging
- aluminum alloy
- internal structure
- billet
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
Abstract
PURPOSE:To obtain a highly precise turntable having close composition and even internal structure without requiring secondary mechanical work, by making a hot forging material of aluminum alloy plastic by a 450-550 deg.C heat treatment and performing press-forging. CONSTITUTION:As a hot forging material of aluminum alloy, a billet bar having a diameter about a half that of a turntable and prescribed weight is used and heated at about 450-550 deg.C in a hot blast circulation furnace to obtain plasticity. Then, the billet is applied with 1-5t/cm<2> by a press forging machine to be formed into an extremely strong turntable by elongating a forging flow line radially and uniformly, and it is cooled naturally or heat-treated by quenching, etc. Thus, the highly precise turntable having close composition and uniform internal structure is obtained without secondary mechanical work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14318180A JPS5766507A (en) | 1980-10-14 | 1980-10-14 | Manufacture of turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14318180A JPS5766507A (en) | 1980-10-14 | 1980-10-14 | Manufacture of turntable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5766507A true JPS5766507A (en) | 1982-04-22 |
Family
ID=15332766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14318180A Pending JPS5766507A (en) | 1980-10-14 | 1980-10-14 | Manufacture of turntable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5766507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4782005B2 (en) * | 2003-07-17 | 2011-09-28 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | Levitation type magnetic actuator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148701A (en) * | 1980-04-21 | 1981-11-18 | Tamagawa Kikai Kinzoku Kk | Acoustic apparatus |
-
1980
- 1980-10-14 JP JP14318180A patent/JPS5766507A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148701A (en) * | 1980-04-21 | 1981-11-18 | Tamagawa Kikai Kinzoku Kk | Acoustic apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4782005B2 (en) * | 2003-07-17 | 2011-09-28 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | Levitation type magnetic actuator |
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