JPS57195543A - Press forming method for valve cover of compressor - Google Patents
Press forming method for valve cover of compressorInfo
- Publication number
- JPS57195543A JPS57195543A JP8011281A JP8011281A JPS57195543A JP S57195543 A JPS57195543 A JP S57195543A JP 8011281 A JP8011281 A JP 8011281A JP 8011281 A JP8011281 A JP 8011281A JP S57195543 A JPS57195543 A JP S57195543A
- Authority
- JP
- Japan
- Prior art keywords
- area
- valve cover
- lower die
- upper die
- steel material
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
PURPOSE:To obtain a valve cover of a compressor improved in airtightness by press forming in making the area of pressure contact of an upper die with a plate 14 greater than the gap of a lower die and thereby improving flatness of the contact face. CONSTITUTION:The sectional form is so set that an area E of pressure contact of an upper die 16 of a press with a plate 14 is greater than a gap 18 in which a lower die 13 does not support the plate 14. Because of this setting, when the upper die 16 is lowered, force operates to pull and let flow down the steel material of the area A outside of the upper die 16. On the other hand, as the area B occupied by the lower die 13 is formed greater than the area A, force is caused by the lower die 13 to let flow the steel material into the area A from outer periphery of the area B. Since these keep balance, the steel material in the area A between upper dies 16, 16 does not flow, and the contact face 14a of the valve cover 20 is made approximately flat. By this way, a highly airtight valve cover can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8011281A JPS57195543A (en) | 1981-05-28 | 1981-05-28 | Press forming method for valve cover of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8011281A JPS57195543A (en) | 1981-05-28 | 1981-05-28 | Press forming method for valve cover of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57195543A true JPS57195543A (en) | 1982-12-01 |
Family
ID=13709096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8011281A Pending JPS57195543A (en) | 1981-05-28 | 1981-05-28 | Press forming method for valve cover of compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57195543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107537951A (en) * | 2017-10-27 | 2018-01-05 | 湖南南方通用航空发动机有限公司 | One kind is calmed the anger hood horn mouth part forming methods |
-
1981
- 1981-05-28 JP JP8011281A patent/JPS57195543A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107537951A (en) * | 2017-10-27 | 2018-01-05 | 湖南南方通用航空发动机有限公司 | One kind is calmed the anger hood horn mouth part forming methods |
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