JPS55165248A - Knockout method of closed forged product - Google Patents
Knockout method of closed forged productInfo
- Publication number
- JPS55165248A JPS55165248A JP7196979A JP7196979A JPS55165248A JP S55165248 A JPS55165248 A JP S55165248A JP 7196979 A JP7196979 A JP 7196979A JP 7196979 A JP7196979 A JP 7196979A JP S55165248 A JPS55165248 A JP S55165248A
- Authority
- JP
- Japan
- Prior art keywords
- movable parts
- die cavity
- die
- dies
- punches
- 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)
Abstract
PURPOSE: To move the movable parts after opening of upper and lower dies and make the knockout of the product from the lower die easy by letting the portions adjoining the through-hole for pounch be the movable parts in the die cavity part of the closed forging dies.
CONSTITUTION: Outer presses 9, 9 cause an upper die 2 to descend and make close contact with a lower die 3, thereby closing the die cavity. Further, punches 5, 5..., 5', 5'... enter the inside of the die cavity to forge the rough material. At this time, the top surface of the through parts 4a of the movable parts 4 adjoining the through- holes of the punches 5, 5 function as the partial faces constituting the die cavity. Next, if the oil pressure of oil paths 13, 14, 15 are cut off, the oil pressure of an accumulator 16 acts upon the presses 9, 10, 11 to pull back the respective presses, causing the upper and lower dies 2, 3 to space. Thence, the oil pressure from the oil path 22 separate from the moving means of the upper dies 2, 3 and punches 5, 5, 5', 5' causes cylinders 21, 21 to expell the plunger 4b, thereby moving the product upwards together with the movable parts 4.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7196979A JPS55165248A (en) | 1979-06-07 | 1979-06-07 | Knockout method of closed forged product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7196979A JPS55165248A (en) | 1979-06-07 | 1979-06-07 | Knockout method of closed forged product |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55165248A true JPS55165248A (en) | 1980-12-23 |
Family
ID=13475801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7196979A Pending JPS55165248A (en) | 1979-06-07 | 1979-06-07 | Knockout method of closed forged product |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55165248A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49119849A (en) * | 1973-03-06 | 1974-11-15 |
-
1979
- 1979-06-07 JP JP7196979A patent/JPS55165248A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49119849A (en) * | 1973-03-06 | 1974-11-15 |
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