JPS57112930A - Portable watch case by thin plate bulge forming - Google Patents

Portable watch case by thin plate bulge forming

Info

Publication number
JPS57112930A
JPS57112930A JP55188102A JP18810280A JPS57112930A JP S57112930 A JPS57112930 A JP S57112930A JP 55188102 A JP55188102 A JP 55188102A JP 18810280 A JP18810280 A JP 18810280A JP S57112930 A JPS57112930 A JP S57112930A
Authority
JP
Japan
Prior art keywords
watch case
stiffener
outer shell
shell material
workability
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
Application number
JP55188102A
Other languages
Japanese (ja)
Inventor
Yuichi Ohigata
Nobumasa Abe
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP55188102A priority Critical patent/JPS57112930A/en
Publication of JPS57112930A publication Critical patent/JPS57112930A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enable simple manufacture at low cost in manufacturing of a portable watch case by bulge forming an outer shell material of the case making a stiffener made of soft metal excellent in workability a working pressure medium.
CONSTITUTION: A metallic material 3 as an outer shell material such as gold, silver, stainless steel, brass, nickel silver etc. and a stiffener 4 excellent in workability such as lead, tin, aluminum, zinc alloy etc. are set in a forming mold made up of a female die 5, a male die 6, a knock out 7 and a punch 8. Soft stiffener 4 is pressed by the punch 8 at normal temperature and the outer shell material 3 is bulge formed to the form of a watch case by the pressure simultaneously and to one body. After removing excess metal, the formed product is polished and made to a watch case adding secondary parts.
COPYRIGHT: (C)1982,JPO&Japio
JP55188102A 1980-12-29 1980-12-29 Portable watch case by thin plate bulge forming Pending JPS57112930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55188102A JPS57112930A (en) 1980-12-29 1980-12-29 Portable watch case by thin plate bulge forming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55188102A JPS57112930A (en) 1980-12-29 1980-12-29 Portable watch case by thin plate bulge forming

Publications (1)

Publication Number Publication Date
JPS57112930A true JPS57112930A (en) 1982-07-14

Family

ID=16217730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55188102A Pending JPS57112930A (en) 1980-12-29 1980-12-29 Portable watch case by thin plate bulge forming

Country Status (1)

Country Link
JP (1) JPS57112930A (en)

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