JPS5714423A - Drawing method for vibration diaphragm - Google Patents
Drawing method for vibration diaphragmInfo
- Publication number
- JPS5714423A JPS5714423A JP8836180A JP8836180A JPS5714423A JP S5714423 A JPS5714423 A JP S5714423A JP 8836180 A JP8836180 A JP 8836180A JP 8836180 A JP8836180 A JP 8836180A JP S5714423 A JPS5714423 A JP S5714423A
- Authority
- JP
- Japan
- Prior art keywords
- die
- radiation part
- dies
- lowered
- young
- 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
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
PURPOSE: To form a radiation part of Young's modulus larger than that of an edge part by work hardening only the radiation part in the final stage of drawing.
CONSTITUTION: Respective heaters 14, 15, 21, 31 are electrically conducted to heat dies 1, 2, 3, to about 300W400°C, and the die 1 is lowered to draw an edge part. When the die 1 is lowered further, a metallic foil 7 and the die 3 abut, and the foil 7 is successively drawn along the shape of a radiation part. At the point of the time when the drawing of the radiation part is completed about 80W90%, that is, at the point when the stroke of the die 3 attains 80W90% of the entire stroke of the dies, the descending of the die 1 is stopped. Here, the temps. of the dies 11 and 3 are kept at about 170W220°C by limiting the currents of the heaters 14 and 31. Thence, the die 1 is lowered to draw the radiation part at remaining 20W10%, and this completes pressing as well. In the drawing of the last 20W10%, it is cold-worked, and the Young's modulus increases considerably in accordance with work hardening.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8836180A JPS5714423A (en) | 1980-06-27 | 1980-06-27 | Drawing method for vibration diaphragm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8836180A JPS5714423A (en) | 1980-06-27 | 1980-06-27 | Drawing method for vibration diaphragm |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5714423A true JPS5714423A (en) | 1982-01-25 |
JPS6352972B2 JPS6352972B2 (en) | 1988-10-20 |
Family
ID=13940664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8836180A Granted JPS5714423A (en) | 1980-06-27 | 1980-06-27 | Drawing method for vibration diaphragm |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5714423A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6083818A (en) * | 1983-10-15 | 1985-05-13 | Asahi Chem Ind Co Ltd | Structure of injection mold |
JPS62270225A (en) * | 1986-05-19 | 1987-11-24 | Toshiba Corp | Warm press forming device |
JPH02187298A (en) * | 1989-01-13 | 1990-07-23 | Hitachi Ltd | Pressurizing apparatus |
WO2005039727A1 (en) * | 2003-10-24 | 2005-05-06 | Native Fire Actives Pty Ltd | Extraction process |
JP2005333321A (en) * | 2004-05-19 | 2005-12-02 | Pioneer Electronic Corp | Speaker device and method for manufacturing magnesium edge therefor |
JP2008542031A (en) | 2005-05-30 | 2008-11-27 | ティッセンクルップ スチール アクチェンゲゼルシャフト | Method of manufacturing a metal component including adjacent portions having various material properties |
JP2012016721A (en) * | 2010-07-07 | 2012-01-26 | Kobe Steel Ltd | Warm-forming die |
JP2013052418A (en) * | 2011-09-05 | 2013-03-21 | Foster Electric Co Ltd | Apparatus for thermally molding component for electroacoustic transducer |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50137861A (en) * | 1974-04-24 | 1975-11-01 | ||
JPS531166A (en) * | 1976-06-25 | 1978-01-07 | Hitachi Ltd | Method of pressing steel plate |
-
1980
- 1980-06-27 JP JP8836180A patent/JPS5714423A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50137861A (en) * | 1974-04-24 | 1975-11-01 | ||
JPS531166A (en) * | 1976-06-25 | 1978-01-07 | Hitachi Ltd | Method of pressing steel plate |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6083818A (en) * | 1983-10-15 | 1985-05-13 | Asahi Chem Ind Co Ltd | Structure of injection mold |
JPH0124053B2 (en) * | 1983-10-15 | 1989-05-10 | Asahi Chemical Ind | |
JPS62270225A (en) * | 1986-05-19 | 1987-11-24 | Toshiba Corp | Warm press forming device |
JPH02187298A (en) * | 1989-01-13 | 1990-07-23 | Hitachi Ltd | Pressurizing apparatus |
WO2005039727A1 (en) * | 2003-10-24 | 2005-05-06 | Native Fire Actives Pty Ltd | Extraction process |
JP2005333321A (en) * | 2004-05-19 | 2005-12-02 | Pioneer Electronic Corp | Speaker device and method for manufacturing magnesium edge therefor |
JP2008542031A (en) | 2005-05-30 | 2008-11-27 | ティッセンクルップ スチール アクチェンゲゼルシャフト | Method of manufacturing a metal component including adjacent portions having various material properties |
JP2012016721A (en) * | 2010-07-07 | 2012-01-26 | Kobe Steel Ltd | Warm-forming die |
JP2013052418A (en) * | 2011-09-05 | 2013-03-21 | Foster Electric Co Ltd | Apparatus for thermally molding component for electroacoustic transducer |
Also Published As
Publication number | Publication date |
---|---|
JPS6352972B2 (en) | 1988-10-20 |
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