JPS55165220A - Extruding method using round bar as material - Google Patents
Extruding method using round bar as materialInfo
- Publication number
- JPS55165220A JPS55165220A JP7225679A JP7225679A JPS55165220A JP S55165220 A JPS55165220 A JP S55165220A JP 7225679 A JP7225679 A JP 7225679A JP 7225679 A JP7225679 A JP 7225679A JP S55165220 A JPS55165220 A JP S55165220A
- Authority
- JP
- Japan
- Prior art keywords
- punch
- die
- diameter
- selfishly
- round bar
- 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
- Extrusion Of Metal (AREA)
Abstract
PURPOSE: To carry out multistage extrusion without carrying out the cutting work, for manufacturing the mechanical parts of considerable precision and strength, by feeding the punch into the material while shearing the material with the outer diameter of the punch, and at the same time, by compressing the outer circumference of the material with the selfishly generated die, in order to perform the extrusion work.
CONSTITUTION: The material 8 comprising the metallic round bar is placed in the die 9 possessing the large diameter part to restrict the outgoing flow of the material 8 and the small diameter part to form the protruding part. Next, under this condition, the small diameter protruding part C is formed, while forming the cavity from one end of the round bar 8 by the punch 10 possessing diameter larger than the protruding part. When thinking of this material 8 undergoing above works to be divided into three parts, A, B, C, the "selfishly generated die" as shown by the dotted line 11 is formed at the boundary between A and B by the action of the punch 10. Then, this selfishly generated die 11 extrudes the material 8, being sheared and deformed by the punch 10, in the arrowed direction toward the center of the die 9, and the diameter of the material 8 is contracted, and the multistep product is formed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7225679A JPS55165220A (en) | 1979-06-11 | 1979-06-11 | Extruding method using round bar as material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7225679A JPS55165220A (en) | 1979-06-11 | 1979-06-11 | Extruding method using round bar as material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55165220A true JPS55165220A (en) | 1980-12-23 |
Family
ID=13484024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7225679A Pending JPS55165220A (en) | 1979-06-11 | 1979-06-11 | Extruding method using round bar as material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55165220A (en) |
-
1979
- 1979-06-11 JP JP7225679A patent/JPS55165220A/en active Pending
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