JPS5540043A - Inside surface grooving method of heat exchange pipe - Google Patents
Inside surface grooving method of heat exchange pipeInfo
- Publication number
- JPS5540043A JPS5540043A JP11221678A JP11221678A JPS5540043A JP S5540043 A JPS5540043 A JP S5540043A JP 11221678 A JP11221678 A JP 11221678A JP 11221678 A JP11221678 A JP 11221678A JP S5540043 A JPS5540043 A JP S5540043A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- rolling
- grooves
- tool
- collars
- 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
Abstract
PURPOSE: To perform the captioned fabrication surely with good productivity by restraining the outside circumferential protions of a pipe except its specified portions with cylindrical collars of the inside diameter approximately the same size as the outside diameter of the pipe and force inserting a thread-rolling tool having the rolling rings which have the tread surface of the same shape as groove shape into the pipe.
CONSTITUTION: The outside circumference of a pipe 9 is restrained by cylindrical collars 5 of an inside diameter slightly larger than the outside diameter of the pipe 9. The cylindrical holder 2 of the thread-rolling tool 1 is integrally coupled with a rod 4 and rolling rings 3 are mounted at the same number as that of grooves and at helix angles of around 10° with respect to the cylinder axis direction to the holder 2 and therefore when the tool 1 is force inserted into the pipe 9, fine grooves are fabricated by rolling of the rolling rings 3. Even if the forcing depth of the rolling rings 3 become more than 20% of the thickness of the pipe 9, the deformation of the pipe 9 is prevented by the collars 5 and therefore the fine grooves are surely formed. Since the bend portions and brazing portions 8 of the pipe 9 have no restraining, they deform during grooving and grooves are hardly formed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11221678A JPS5540043A (en) | 1978-09-14 | 1978-09-14 | Inside surface grooving method of heat exchange pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11221678A JPS5540043A (en) | 1978-09-14 | 1978-09-14 | Inside surface grooving method of heat exchange pipe |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18131382A Division JPS58116936A (en) | 1982-10-18 | 1982-10-18 | Working method for internal groove of heat exchanging pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5540043A true JPS5540043A (en) | 1980-03-21 |
Family
ID=14581154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11221678A Pending JPS5540043A (en) | 1978-09-14 | 1978-09-14 | Inside surface grooving method of heat exchange pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5540043A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6239817U (en) * | 1985-08-30 | 1987-03-10 | ||
JPH03124087U (en) * | 1990-03-30 | 1991-12-17 | ||
JPH0639224A (en) * | 1992-05-12 | 1994-02-15 | Kawata Mfg Co Ltd | Dust collector |
JPH0751524A (en) * | 1993-08-10 | 1995-02-28 | Nippon Spindle Mfg Co Ltd | Bag filter centering device of bag filter type dust collector |
-
1978
- 1978-09-14 JP JP11221678A patent/JPS5540043A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6239817U (en) * | 1985-08-30 | 1987-03-10 | ||
JPH0451845Y2 (en) * | 1985-08-30 | 1992-12-07 | ||
JPH03124087U (en) * | 1990-03-30 | 1991-12-17 | ||
JPH0639224A (en) * | 1992-05-12 | 1994-02-15 | Kawata Mfg Co Ltd | Dust collector |
JPH0751524A (en) * | 1993-08-10 | 1995-02-28 | Nippon Spindle Mfg Co Ltd | Bag filter centering device of bag filter type dust collector |
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