JPS5575834A - Production of metal-made racket frame - Google Patents

Production of metal-made racket frame

Info

Publication number
JPS5575834A
JPS5575834A JP14931078A JP14931078A JPS5575834A JP S5575834 A JPS5575834 A JP S5575834A JP 14931078 A JP14931078 A JP 14931078A JP 14931078 A JP14931078 A JP 14931078A JP S5575834 A JPS5575834 A JP S5575834A
Authority
JP
Japan
Prior art keywords
metal
metal pipe
racket
dies
fluid
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.)
Granted
Application number
JP14931078A
Other languages
Japanese (ja)
Other versions
JPS5627335B2 (en
Inventor
Sosuke Maeda
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP14931078A priority Critical patent/JPS5575834A/en
Publication of JPS5575834A publication Critical patent/JPS5575834A/en
Publication of JPS5627335B2 publication Critical patent/JPS5627335B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: To form a metal pipe to the racket frame of the sectional shape which is optimum in terms of dynamics and design by bending the metal pipe to racket- frame form thereby acting high pressure fluid to the metal pipe from its inside in metal dies.
CONSTITUTION: One metal pipe 1 is bent to form a ball hitting part 2, throat part 3 and stem part 4. Next, the metal pipe 1 is loaded in metal dies 5 and after the metal dies 5 are closed, two conical nozzles 13a, 13b are firmly pressure contacted to ends 12a, 12b. Thence, fluid of high pressure is fed through the nozzles 13a, 13b to let the high fluid pressure act upon the inside surface of the metal pipe 1. Then, the metal pipe 1 is expanded within the cavity 9 formed in the metal dies 5. After this, the fluid pressure is released and the molded racket is taken out. When the end parts 4a, 4b of the stem part 4 are cut off, the desired racket frame is obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP14931078A 1978-12-02 1978-12-02 Production of metal-made racket frame Granted JPS5575834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14931078A JPS5575834A (en) 1978-12-02 1978-12-02 Production of metal-made racket frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14931078A JPS5575834A (en) 1978-12-02 1978-12-02 Production of metal-made racket frame

Publications (2)

Publication Number Publication Date
JPS5575834A true JPS5575834A (en) 1980-06-07
JPS5627335B2 JPS5627335B2 (en) 1981-06-24

Family

ID=15472323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14931078A Granted JPS5575834A (en) 1978-12-02 1978-12-02 Production of metal-made racket frame

Country Status (1)

Country Link
JP (1) JPS5575834A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05504725A (en) * 1991-02-01 1993-07-22 ハーデーエー　メタルヴエルク　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Method and apparatus for hydrostatically deforming a hollow body made of cold deformable metal
JPH0623441A (en) * 1992-02-19 1994-02-01 Sango Co Ltd Method for sealing end part in hydraulic bulging work
CN111151610A (en) * 2020-03-13 2020-05-15 杭州诚兴体育用品有限公司 Frame forming machine of quick badminton racket

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05504725A (en) * 1991-02-01 1993-07-22 ハーデーエー　メタルヴエルク　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Method and apparatus for hydrostatically deforming a hollow body made of cold deformable metal
JPH0623441A (en) * 1992-02-19 1994-02-01 Sango Co Ltd Method for sealing end part in hydraulic bulging work
CN111151610A (en) * 2020-03-13 2020-05-15 杭州诚兴体育用品有限公司 Frame forming machine of quick badminton racket

Also Published As

Publication number Publication date
JPS5627335B2 (en) 1981-06-24

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