MY106013A - An apparatus for, and a method of, cutting a blank. - Google Patents
An apparatus for, and a method of, cutting a blank.Info
- Publication number
- MY106013A MY106013A MYPI90001093A MYPI19901093A MY106013A MY 106013 A MY106013 A MY 106013A MY PI90001093 A MYPI90001093 A MY PI90001093A MY PI19901093 A MYPI19901093 A MY PI19901093A MY 106013 A MY106013 A MY 106013A
- Authority
- MY
- Malaysia
- Prior art keywords
- blank
- forming
- punch
- lobe
- section
- Prior art date
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
WHEN A BLANK IS CUT FROM METAL SHEET WHICH SUFFERS FROM CRYSTALLOGRAPHIC ANISOTROPY, THERE IS A TENDENCY FOR EARS TO BE FORMED DURING SUBSEQUENT FORMING OPERATIONS, SUCH AS DRAWING OR PRESSING. IN ORDER TO COMPENSATE FOR THIS TENDENCY, THERE MAY BE USED A METAL BLANK WHICH IS NOT COMPLETELY ROUND BUT HAS LOBES AT POSITIONS TO CANCEL AT LEAST SOME OF THE VALLEYS BETWEEN THE EARS. THESE IS DESCRIBED A PUNCH (110) AND DIE (111) WHICH MAY BE USED TO FORM SUCH A LOBED BLANK (112). THE PUNCH (110) HAS FOUR CIRCUMFERENTIALLY EXTENDING LOBE- FORMING SECTIONS (124). EACH LOBE- FORMING SECTION IS CONSTRUCTED BY FORMING A STEPPED RECESS IN THE CUTTING EDGE OF THE PUNCH (110). IN EACH LOBE- FORMING SECTION, THE DEPTH OF THE RECESS VARIES FROM A MAXIMUM AT THE MIDDLE OF THE SECTION TO ZERO AT THE ENDS. THE DIE (111) IS CONVENTIONAL.(FIG 9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MYPI90001093A MY106013A (en) | 1990-06-28 | 1990-06-28 | An apparatus for, and a method of, cutting a blank. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MYPI90001093A MY106013A (en) | 1990-06-28 | 1990-06-28 | An apparatus for, and a method of, cutting a blank. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MY106013A true MY106013A (en) | 1995-02-28 |
Family
ID=79554109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI90001093A MY106013A (en) | 1990-06-28 | 1990-06-28 | An apparatus for, and a method of, cutting a blank. |
Country Status (1)
| Country | Link |
|---|---|
| MY (1) | MY106013A (en) |
-
1990
- 1990-06-28 MY MYPI90001093A patent/MY106013A/en unknown
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