JPS551904A - Forming method for plus-driver - Google Patents
Forming method for plus-driverInfo
- Publication number
- JPS551904A JPS551904A JP7330078A JP7330078A JPS551904A JP S551904 A JPS551904 A JP S551904A JP 7330078 A JP7330078 A JP 7330078A JP 7330078 A JP7330078 A JP 7330078A JP S551904 A JPS551904 A JP S551904A
- Authority
- JP
- Japan
- Prior art keywords
- plus
- burr
- tips
- blank
- cavities
- 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 efficiently manufacture the plus-driver at low cost, by pressing the middle part of the round bar type blank of suitable length, so as to simultaneously form tips of two plus-drivers, and then, by trimming the burr and cutting off two tips.
CONSTITUTION: The round bar type blank of desired length is heated when the warm or hot forming work is to be executed, or is annealed using the treating agent at the cold forming work; and then, the blank is laid so as to locate its middle at the middle between cavities 4a of the lower die 4. Under this condition, the upper die 7 is brought down by the slide 5, and the middle of the blank is press formed between the dies 4, 7; hereby, the tips of two plus-drivers' heads 8 are simultaneously formed by the cavities 4a, 7a. These tips are mutually connected by the burr 1a generated at the forming work. Next, the upper die 7 is lifted, and the burr 1a is jutted out of the cavities 4a, 7a, by the knockout pin 9, and the burr 1a is cut off by the trimming press, etc.; hereby, two driver heads 8 are simultaneously formed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7330078A JPS551904A (en) | 1978-06-19 | 1978-06-19 | Forming method for plus-driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7330078A JPS551904A (en) | 1978-06-19 | 1978-06-19 | Forming method for plus-driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS551904A true JPS551904A (en) | 1980-01-09 |
Family
ID=13514166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7330078A Pending JPS551904A (en) | 1978-06-19 | 1978-06-19 | Forming method for plus-driver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS551904A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056438A (en) * | 1983-09-06 | 1985-04-02 | Howa:Kk | Manufacture of minus type screw driver |
| CN109551055A (en) * | 2019-01-10 | 2019-04-02 | 宁波必沃纺织机械有限公司 | A kind of inserted sheet automatic chamfering mechanism |
-
1978
- 1978-06-19 JP JP7330078A patent/JPS551904A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056438A (en) * | 1983-09-06 | 1985-04-02 | Howa:Kk | Manufacture of minus type screw driver |
| CN109551055A (en) * | 2019-01-10 | 2019-04-02 | 宁波必沃纺织机械有限公司 | A kind of inserted sheet automatic chamfering mechanism |
| CN109551055B (en) * | 2019-01-10 | 2023-09-29 | 宁波必沃纺织机械有限公司 | Automatic chamfering mechanism for inserting sheets |
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