JPS57156842A - Method and device for piercing of pipe - Google Patents
Method and device for piercing of pipeInfo
- Publication number
- JPS57156842A JPS57156842A JP4191481A JP4191481A JPS57156842A JP S57156842 A JPS57156842 A JP S57156842A JP 4191481 A JP4191481 A JP 4191481A JP 4191481 A JP4191481 A JP 4191481A JP S57156842 A JPS57156842 A JP S57156842A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- pieces
- holes
- hole
- reduce
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
Abstract
PURPOSE:To reduce the bends of the circumferential edges of holes approximately equally over the entire circumference and to reduce the dents at the circumferential edges of the holes in the stage of piercing holes in a pipe with punches by putting two pieces of specific scores beforehand on the outside circumference of the pipe. CONSTITUTION:Two pieces of scores 19 of the depth 1/4-3/4 the wall thickness of a pipe 11 are beforehand put on the outside circumferential surface of the pipe with a side cutter 18 provided with two pieces of scoring blades 17 of the spacing of the same size as the diameter of the hole to be punched from the direction at a right angle to the pipe 11 axis. Thence, a hole 21 is pierced between the cores 19 and 19 with a punch 14 descending in a punch guide hole 20 pierced vertically to the cutter 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4191481A JPS57156842A (en) | 1981-03-23 | 1981-03-23 | Method and device for piercing of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4191481A JPS57156842A (en) | 1981-03-23 | 1981-03-23 | Method and device for piercing of pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57156842A true JPS57156842A (en) | 1982-09-28 |
Family
ID=12621520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4191481A Pending JPS57156842A (en) | 1981-03-23 | 1981-03-23 | Method and device for piercing of pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57156842A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1188498A2 (en) * | 2000-09-12 | 2002-03-20 | Denso Corporation | Method and apparatus for making holes in a pipe |
| CN100446886C (en) * | 2007-01-31 | 2008-12-31 | 庄添财 | Fully-automatic bent-pipe punching machine |
| CN109773020A (en) * | 2018-12-25 | 2019-05-21 | 宁波思明汽车科技股份有限公司 | The preparation method of car thin-wall structural member |
-
1981
- 1981-03-23 JP JP4191481A patent/JPS57156842A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1188498A2 (en) * | 2000-09-12 | 2002-03-20 | Denso Corporation | Method and apparatus for making holes in a pipe |
| EP1188498A3 (en) * | 2000-09-12 | 2002-10-02 | Denso Corporation | Method and apparatus for making holes in a pipe |
| CN100446886C (en) * | 2007-01-31 | 2008-12-31 | 庄添财 | Fully-automatic bent-pipe punching machine |
| CN109773020A (en) * | 2018-12-25 | 2019-05-21 | 宁波思明汽车科技股份有限公司 | The preparation method of car thin-wall structural member |
| CN109773020B (en) * | 2018-12-25 | 2019-11-19 | 宁波思明汽车科技股份有限公司 | The preparation method of car thin-wall structural member |
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