Title:
METHOD AND APPARATUS FOR MANUFACTURING DRUM
Document Type and Number:
Japanese Patent JP3822206
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent the generation of noise and vibration.
SOLUTION: For providing a drum preventing the generation of vibration and noise, this method for manufacturing the drum comprises a first process of forming a cylindrical drum, a second process of shrinking the diameters of both end parts of the above drum, respectively, a third process of forming beads at the central part of the drum and a fourth process of performing a hemming-work for bending so that both end edge parts of the drum are piled up, respectively.
Inventors:
Lee Jun
Application Number:
JP2004007975A
Publication Date:
September 13, 2006
Filing Date:
January 15, 2004
Export Citation:
Assignee:
LG Electronics Inc.
International Classes:
B21D53/26; D06F37/04; B21D22/16; B21D41/04; B21D51/18; B21D53/34; D06F37/02; D06F39/12; D06F58/04; D06F58/20; (IPC1-7): B21D53/26; B21D22/16; B21D41/04; B21D51/18; D06F37/04; D06F39/12; D06F58/04
Domestic Patent References:
| JP10249459A | ||||
| JP2002038936A | ||||
| JP2001259769A | ||||
| JP7155869A |
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
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