JPS6349573B2 - - Google Patents

Info

Publication number
JPS6349573B2
JPS6349573B2 JP8955181A JP8955181A JPS6349573B2 JP S6349573 B2 JPS6349573 B2 JP S6349573B2 JP 8955181 A JP8955181 A JP 8955181A JP 8955181 A JP8955181 A JP 8955181A JP S6349573 B2 JPS6349573 B2 JP S6349573B2
Authority
JP
Japan
Prior art keywords
spiral fin
cutting
fin
lever
cutting blade
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.)
Expired
Application number
JP8955181A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57206519A (en
Inventor
Mitsuhiro Takasaki
Hiroya Murakami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8955181A priority Critical patent/JPS57206519A/ja
Publication of JPS57206519A publication Critical patent/JPS57206519A/ja
Publication of JPS6349573B2 publication Critical patent/JPS6349573B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
JP8955181A 1981-06-12 1981-06-12 Fixing device of spiral fin Granted JPS57206519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8955181A JPS57206519A (en) 1981-06-12 1981-06-12 Fixing device of spiral fin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8955181A JPS57206519A (en) 1981-06-12 1981-06-12 Fixing device of spiral fin

Publications (2)

Publication Number Publication Date
JPS57206519A JPS57206519A (en) 1982-12-17
JPS6349573B2 true JPS6349573B2 (enrdf_load_stackoverflow) 1988-10-05

Family

ID=13973952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8955181A Granted JPS57206519A (en) 1981-06-12 1981-06-12 Fixing device of spiral fin

Country Status (1)

Country Link
JP (1) JPS57206519A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106693U (enrdf_load_stackoverflow) * 1990-02-20 1991-11-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106693U (enrdf_load_stackoverflow) * 1990-02-20 1991-11-05

Also Published As

Publication number Publication date
JPS57206519A (en) 1982-12-17

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