JPS5562172A - Working method for metal sheet - Google Patents

Working method for metal sheet

Info

Publication number
JPS5562172A
JPS5562172A JP13327278A JP13327278A JPS5562172A JP S5562172 A JPS5562172 A JP S5562172A JP 13327278 A JP13327278 A JP 13327278A JP 13327278 A JP13327278 A JP 13327278A JP S5562172 A JPS5562172 A JP S5562172A
Authority
JP
Japan
Prior art keywords
hole
metal sheet
sheet
burrs
diameter
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
JP13327278A
Other languages
Japanese (ja)
Inventor
Hiroyuki Mabuchi
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP13327278A priority Critical patent/JPS5562172A/en
Publication of JPS5562172A publication Critical patent/JPS5562172A/en
Pending legal-status Critical Current

Links

Landscapes

  • Punching Or Piercing (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

PURPOSE: To work metal sheet at a high preciseness without causing deformation such as warp of the metal sheet, by the combination of etching and stamping in making a hole in the metal sheet.
CONSTITUTION: A hole 7 is made in a metal sheet 6 by half-etching. The edge 7a of the hole 7 is a circle of a diameter a little larger than that necessary for fitting. Then the sheet is stamped from the side of the sheet opposite to the hole 7 to form a hole 8 necessary for fitting. The hole 8 is located coaxially on the hole 7 and the diameter of the hole 8 is smaller than that of the circle of the edge 7a, so that the burrs 8a formed in stamping are kept in the sheet thickness of the metal sheet 6. In other case, a metal sheet 9 is etched on both sides with different diameters, then a hole 12 is formed by shaving. The diameter of the hole 12 is larger than that of the hole 10 and is smaller than that of the hole 11, so that the burrs 12a formed by shaving are kept in the sheet thickness of the metal sheet 9. Hereby an etched part, which has a hole and no warp, and causing no burrs forced out on the surface, is manufactured.
COPYRIGHT: (C)1980,JPO&Japio
JP13327278A 1978-10-31 1978-10-31 Working method for metal sheet Pending JPS5562172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13327278A JPS5562172A (en) 1978-10-31 1978-10-31 Working method for metal sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13327278A JPS5562172A (en) 1978-10-31 1978-10-31 Working method for metal sheet

Publications (1)

Publication Number Publication Date
JPS5562172A true JPS5562172A (en) 1980-05-10

Family

ID=15100739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13327278A Pending JPS5562172A (en) 1978-10-31 1978-10-31 Working method for metal sheet

Country Status (1)

Country Link
JP (1) JPS5562172A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05285559A (en) * 1992-04-08 1993-11-02 Amada Metrecs Co Ltd Louver die

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05285559A (en) * 1992-04-08 1993-11-02 Amada Metrecs Co Ltd Louver die

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