JPS57108203A - Method for straightening of flanged cylindrical sintered parts - Google Patents
Method for straightening of flanged cylindrical sintered partsInfo
- Publication number
- JPS57108203A JPS57108203A JP18493180A JP18493180A JPS57108203A JP S57108203 A JPS57108203 A JP S57108203A JP 18493180 A JP18493180 A JP 18493180A JP 18493180 A JP18493180 A JP 18493180A JP S57108203 A JPS57108203 A JP S57108203A
- Authority
- JP
- Japan
- Prior art keywords
- rod
- dies
- straightening
- parts
- flanged cylindrical
- 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
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To straighten the sizes of flanged cylindrical sintered parts with good accuracy without producing gallings and flaws by setting said parts in dies, and passing guide rods from the lower side and core rods for straightening from the upper side into the through-holes of the parts.
CONSTITUTION: A sintered part 1 is set in a die 2 for flange, and a guide rod 5 is passed into the through-hole 1b of the part 1 from the lower side of the dies 2, 3, whereby the part 1 is positioned. In this case, the rod 5 is forced upward by means of the spring 7 in a cylinder 6. A core rod 9 for straightening is then inserted into the hole 1b from the upper side of the dies 2, 3, and an upper punch 8 is lowered. Then, the bottom face of the part 1 contacts with a lower punch 10, and the part 1 is straightened under pressure by the dies 2, 3 and the rod 9 so as to conform to their shapes. At this time, the part 1 is aligned of center with the rod 5 and therefore, the production of gallings and flaws is obviated.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18493180A JPS57108203A (en) | 1980-12-25 | 1980-12-25 | Method for straightening of flanged cylindrical sintered parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18493180A JPS57108203A (en) | 1980-12-25 | 1980-12-25 | Method for straightening of flanged cylindrical sintered parts |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57108203A true JPS57108203A (en) | 1982-07-06 |
JPS6128722B2 JPS6128722B2 (en) | 1986-07-02 |
Family
ID=16161844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18493180A Granted JPS57108203A (en) | 1980-12-25 | 1980-12-25 | Method for straightening of flanged cylindrical sintered parts |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57108203A (en) |
-
1980
- 1980-12-25 JP JP18493180A patent/JPS57108203A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6128722B2 (en) | 1986-07-02 |
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